1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.403 2009/05/02 22:16:58 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: $currentstring =
542: &Apache::loncommon::start_page($Apache::londefdef::title,
543: $Apache::londefdef::head
544: .$extra_head,
545: {'add_entries' => $token->[2],
546: 'no_title' => 1,
547: 'force_register' => 1});
548:
549: if ($env{'request.state'} ne 'published') {
550: $currentstring.=&Apache::lonmenu::constspaceform();
551: $currentstring.=&Apache::londefdef::edit_controls();
552: }
553: $currentstring.=&Apache::lonxml::message_location();
554: } elsif ($target eq 'tex') {
555: $currentstring = ''; # '\begin{document}' is in header.
556: }
557: return $currentstring;
558: }
559:
560: sub edit_controls {
561: my ($nochgview) = @_;
562: my $result .= '
563: <form method="post">
564: <div class="LC_edit_problem_header">';
565: unless ($nochgview) {
566: $result .= '
567: <div class="LC_edit_problem_header_row1">'.
568: &Apache::lonxml::renderingoptions().'
569: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
570: </div>';
571: }
572: $result .= '
573: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
574: </form>
575: <br />';
576: return $result;
577: }
578:
579: sub end_body {
580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
581: my $currentstring = &end_p(); # Close off unclosed <p>
582: if ($target eq 'web' || $target eq 'webgrade') {
583: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
584: } elsif ($target eq 'tex') {
585: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
586: }
587: return $currentstring;
588: }
589:
590: # \begin{center} causes a new paragprah spacing that looks odd inside
591: # of a table cell. Same at the end of a \center but with a slightly
592: # larger space .. hence center_correction and center_end_correction.
593: #
594: sub center_correction { return '\vspace*{-6 mm}'; }
595: sub center_end_correction { return '\vspace*{-7 mm}'; }
596:
597: #-- <center> tag (end tag required)
598: sub start_center {
599: my ($target,$token,$tagstack) = @_;
600: my $currentstring = &end_p(); # Close off any prior para.
601: if ($target eq 'web' || $target eq 'webgrade') {
602: $currentstring .= $token->[4];
603: } elsif ($target eq 'tex') {
604: if (&is_inside_of($tagstack, "table")) {
605: $currentstring .= ¢er_correction();
606: }
607: $currentstring .= '\begin{center}';
608: }
609: return $currentstring;
610: }
611:
612: sub end_center {
613: my ($target,$token,$tagstack) = @_;
614: my $currentstring = '';
615: if ($target eq 'web' || $target eq 'webgrade') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: $currentstring = '\end{center}';
619: if (&is_inside_of($tagstack, "table")) {
620: $currentstring .= ¢er_end_correction();
621: }
622: }
623: return $currentstring;
624: }
625:
626: #-- <b> tag (end tag required)
627: # NOTE: In TeX mode disables internal <p>
628: sub start_b {
629: my ($target,$token) = @_;
630: my $currentstring = '';
631: if ($target eq 'web' || $target eq 'webgrade') {
632: $currentstring = $token->[4];
633: } elsif ($target eq 'tex') {
634: &disable_para();
635: $currentstring .= '\textbf{';
636: }
637: return $currentstring;
638: }
639:
640: sub end_b {
641: my ($target,$token) = @_;
642: my $currentstring = '';
643: if ($target eq 'web' || $target eq 'webgrade') {
644: $currentstring = $token->[2];
645: } elsif ($target eq 'tex') {
646: &enable_para();
647: $currentstring = '}';
648: }
649: return $currentstring;
650: }
651:
652: #-- <strong> tag (end tag required)
653: # NOTE: in TeX mode disables internal <p>
654: sub start_strong {
655: my ($target,$token) = @_;
656: my $currentstring = '';
657: if ($target eq 'web' || $target eq 'webgrade') {
658: $currentstring = $token->[4];
659: } elsif ($target eq 'tex') {
660: &disable_para();
661: $currentstring = '\textbf{';
662: }
663: return $currentstring;
664: }
665:
666: sub end_strong {
667: my ($target,$token) = @_;
668: my $currentstring = '';
669: if ($target eq 'web' || $target eq 'webgrade') {
670: $currentstring = $token->[2];
671: } elsif ($target eq 'tex') {
672: &enable_para();
673: $currentstring = '}';
674: }
675: return $currentstring;
676: }
677:
678: #-- <h1> tag (end tag required)
679: sub start_h1 {
680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
681: my $currentstring = &end_p(); # Close off any prior para.
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring .= $token->[4];
684: } elsif ($target eq 'tex') {
685: my $pre;
686: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
687: if ($align eq 'center') {
688: $pre='\begin{center}';
689: } elsif ($align eq 'left') {
690: $pre='\rlap{';
691: } elsif ($align eq 'right') {
692: $pre=' \hfill \llap{';
693: }
694: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
695: if (not defined $TeXsize) {$TeXsize="large";}
696: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
697: } elsif ($target eq 'meta') {
698: $currentstring.='<subject>';
699: &start_output($target);
700: }
701: return $currentstring;
702: }
703:
704: sub end_h1 {
705: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
706: my $currentstring = '';
707: if ($target eq 'web' || $target eq 'webgrade') {
708: $currentstring .= $token->[2];
709: } elsif ($target eq 'tex') {
710: my $post='\vskip 0 mm ';
711: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
712: if ($align eq 'center') {
713: $post='\end{center}';
714: } elsif ($align eq 'left') {
715: $post='} \hfill'.'\vskip 0 mm ';
716: } elsif ($align eq 'right') {
717: $post='}'.'\vskip 0 mm ';
718: }
719: $currentstring .= '}}'.$post;
720: } elsif ($target eq 'meta') {
721: &end_output($target);
722: $currentstring='</subject>';
723: }
724: return $currentstring;
725: }
726:
727: #-- <h2> tag
728: sub start_h2 {
729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
730: my $currentstring = &end_p(); # Close off any prior para.
731: if ($target eq 'web' || $target eq 'webgrade') {
732: $currentstring .= $token->[4];
733: } elsif ($target eq 'tex') {
734: my $pre;
735: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
736: if ($align eq 'center') {
737: $pre='\begin{center}';
738: } elsif ($align eq 'left') {
739: $pre='\rlap{';
740: } elsif ($align eq 'right') {
741: $pre=' \hfill \llap{';
742: }
743: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
744: if (not defined $TeXsize) {$TeXsize="large";}
745: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
746: }
747: return $currentstring;
748: }
749:
750: sub end_h2 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = '';
753: if ($target eq 'web' || $target eq 'webgrade') {
754: $currentstring .= $token->[2];
755: } elsif ($target eq 'tex') {
756: my $post='\vskip 0 mm ';
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $post='\end{center}';
760: } elsif ($align eq 'left') {
761: $post='} \hfill'.'\vskip 0 mm ';
762: } elsif ($align eq 'right') {
763: $post='}'.'\vskip 0 mm ';
764: }
765: $currentstring .= '}}'.$post;
766: }
767: return $currentstring;
768: }
769:
770: #-- <h3> tag
771: sub start_h3 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = &end_p(); # Close off any prior para.
774: if ($target eq 'web' || $target eq 'webgrade') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h3 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h4> tag
814: sub start_h4 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = &end_p(); # Close off any prior para.
817: if ($target eq 'web' || $target eq 'webgrade') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h4 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h5> tag
857: sub start_h5 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = &end_p(); # Close off any prior paras.
860: if ($target eq 'web' || $target eq 'webgrade') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h5 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #-- <h6> tag
900: sub start_h6 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior paras.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h6 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = '';
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: my $post='\vskip 0 mm ';
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $post='\end{center}';
932: } elsif ($align eq 'left') {
933: $post='} \hfill'.'\vskip 0 mm ';
934: } elsif ($align eq 'right') {
935: $post='}'.'\vskip 0 mm ';
936: }
937: $currentstring .= '}}'.$post;
938: }
939: return $currentstring;
940: }
941:
942: #--- <cite> tag (end tag required)
943: sub start_cite {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '\textit{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_cite {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web' || $target eq 'webgrade') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '}';
961: }
962: return $currentstring;
963: }
964:
965: #-- <i> tag (end tag required)
966: sub start_i {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[4];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '\textit{';
973: }
974: return $currentstring;
975: }
976:
977: sub end_i {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[2];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '}';
984: }
985: return $currentstring;
986: }
987:
988: #-- <address> tag (end tag required)
989: sub start_address {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web' || $target eq 'webgrade') {
993: $currentstring .= $token->[4];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '\textit{';
996: }
997: return $currentstring;
998: }
999:
1000: sub end_address {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[2];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '}';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <dfn> tag (end tag required)
1012: sub start_dfn {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '\textit{';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: sub end_dfn {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[2];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '}';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: #-- <tt> tag (end tag required)
1035: sub start_tt {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web' || $target eq 'webgrade') {
1039: $currentstring .= $token->[4];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '\texttt{';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: sub end_tt {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[2];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '}';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: #-- <kbd> tag (end tag required)
1058: sub start_kbd {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[4];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '\texttt{';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: sub end_kbd {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[2];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '}';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: #-- <code> tag (end tag required)
1081: sub start_code {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[4];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '\texttt{';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: sub end_code {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[2];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '}';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: #-- <em> tag (end tag required)
1104: sub start_em {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '\emph{';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_em {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[2];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '}';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: #-- <q> tag (end tag required)
1127: sub start_q {
1128: my ($target,$token) = @_;
1129: my $currentstring = '';
1130: if ($target eq 'web' || $target eq 'webgrade') {
1131: $currentstring .= $token->[4];
1132: } elsif ($target eq 'tex') {
1133: $currentstring .= '\emph{';
1134: }
1135: return $currentstring;
1136: }
1137:
1138: sub end_q {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web' || $target eq 'webgrade') {
1142: $currentstring .= $token->[2];
1143: } elsif ($target eq 'tex') {
1144: $currentstring .= '}';
1145: }
1146: return $currentstring;
1147: }
1148:
1149: # <p> is a bit strange since it does not require a closing </p>
1150: # However in latex, we must often output closing stuff to end
1151: # environments and {}'s etc. Therefore we do all the work
1152: # of figuring out the ending strings in the start tag processing,
1153: # and provide a mechanism to output the stop text external
1154: # to tag processing.
1155: #
1156: {
1157:
1158: my $closing_string = ''; # String required to close <p>
1159:
1160: # Some tags are <p> fragile meaning that <p> inside of them
1161: # does not work within TeX mode. This is managed via the
1162: # counter below:
1163: #
1164:
1165: my $para_disabled = 0;
1166:
1167: sub disable_para {
1168: $para_disabled++;
1169: }
1170: sub enable_para {
1171: $para_disabled--;
1172: }
1173:
1174:
1175: #-- <p> tag (end tag optional)
1176: #optional attribute - align="center|left|right"
1177: sub start_p {
1178: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= &end_p(); # close off prior para if in progress.
1182: $currentstring .= $token->[4];
1183: if (! ($currentstring =~ /\//)) {
1184: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1185: }
1186: } elsif ($target eq 'tex' && !$para_disabled) {
1187:
1188: $currentstring .= &end_p(); # close off prior para if in progress.
1189: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1190: if ($align eq 'center') {
1191: $currentstring .='\begin{center}\par ';
1192: $closing_string = '\end{center}';
1193: if (&is_inside_of($tagstack, "table")) {
1194: $currentstring = ¢er_correction().$currentstring;
1195: }
1196: } elsif ($align eq 'right') {
1197: $currentstring.="\n".'{\flushright ';
1198: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1199: $closing_string= "}\n";
1200: } elsif ($align eq 'left') {
1201: $currentstring.= "\n".'{\flushleft ';
1202: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1203: $closing_string = "}\n";
1204: } else {
1205: $currentstring.='\par ';
1206: if (&is_inside_of($tagstack, 'table')) {
1207: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1208: } else {
1209: $closing_string = '\strut\\\\\strut ';
1210: }
1211: }
1212:
1213: }
1214: return $currentstring;
1215: }
1216: #
1217: # End paragraph processing just requires that we output the
1218: # closing string that was saved and blank it.
1219: sub end_p {
1220: # Note only 'tex' mode uses disable_para and enable_para
1221: # so we don't need to know the target in the check below:
1222:
1223: if (!$para_disabled) {
1224: my $current_string = $closing_string;
1225: $closing_string = ''; # Not in a para anymore.
1226: return $current_string;
1227: } else {
1228: return '';
1229: }
1230:
1231: }
1232: }
1233: #-- <br> tag (end tag forbidden)
1234: sub start_br {
1235: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1236: my $currentstring = '';
1237: if ($target eq 'web' || $target eq 'webgrade') {
1238: $currentstring .= $token->[4];
1239: } elsif ($target eq 'tex') {
1240: my @tempo=@$tagstack;
1241: my $signal=0;
1242: # Not going to factor this to is_inside_of since that would require
1243: # multiple stack traversals.
1244: #
1245: for (my $i=$#tempo;$i>=0;$i--) {
1246: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1247: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1248: $signal=1;
1249: }
1250: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1251: $signal = 1;
1252: }
1253: }
1254: if ($signal != 1) {
1255: $currentstring .= '\strut \\\\ \strut ';
1256: }
1257:
1258: }
1259: return $currentstring;
1260: }
1261:
1262: sub end_br {
1263: my ($target,$token) = @_;
1264: my $currentstring = '';
1265: if ($target eq 'web' || $target eq 'webgrade') {
1266: $currentstring .= $token->[2];
1267: }
1268: return $currentstring;
1269: }
1270:
1271: #-- <big> tag (end tag required)
1272: sub start_big {
1273: my ($target,$token) = @_;
1274: my $currentstring = '';
1275: if ($target eq 'web' || $target eq 'webgrade') {
1276: $currentstring .= $token->[4];
1277: } elsif ($target eq 'tex') {
1278: $currentstring .= '{\large ';
1279: }
1280: return $currentstring;
1281: }
1282:
1283: sub end_big {
1284: my ($target,$token) = @_;
1285: my $currentstring = '';
1286: if ($target eq 'web' || $target eq 'webgrade') {
1287: $currentstring .= $token->[2];
1288: } elsif ($target eq 'tex') {
1289: $currentstring .= '}';
1290: }
1291: return $currentstring;
1292: }
1293:
1294: #-- <small> tag (end tag required)
1295: sub start_small {
1296: my ($target,$token) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web' || $target eq 'webgrade') {
1299: $currentstring .= $token->[4];
1300: } elsif ($target eq 'tex') {
1301: $currentstring .= '{\footnotesize ';
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_small {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring .= $token->[2];
1311: } elsif ($target eq 'tex') {
1312: $currentstring .= '}';
1313: }
1314: return $currentstring;
1315: }
1316:
1317: #-- <basefont> tag (end tag forbidden)
1318: sub start_basefont {
1319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1320: my $currentstring = '';
1321: if ($target eq 'web' || $target eq 'webgrade') {
1322: $currentstring = $token->[4];
1323: } elsif ($target eq 'tex') {
1324: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1325: if (defined $basesize) {
1326: $currentstring = '{\\'.$basesize.' ';
1327: }
1328: }
1329: return $currentstring;
1330: }
1331:
1332: sub end_basefont {
1333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1334: my $currentstring = '';
1335: if ($target eq 'web' || $target eq 'webgrade') {
1336: $currentstring = $token->[4];
1337: } elsif ($target eq 'tex') {
1338: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1339: if (defined $basesize) {
1340: $currentstring = '}';
1341: }
1342: }
1343: return $currentstring;
1344: }
1345:
1346: #-- <font> tag (end tag required)
1347: sub start_font {
1348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1349: my $currentstring = '';
1350: if ($target eq 'web' || $target eq 'webgrade') {
1351: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1352: if ($face!~/symbol/i) {
1353: if (($env{'browser.fontenhance'} eq 'on') ||
1354: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1355: }
1356: $currentstring = $token->[4];
1357: } elsif ($target eq 'tex') {
1358: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1359: if (defined $fontsize) {
1360: $currentstring = '{\\'.$fontsize.' ';
1361: }
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_font {
1367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring = $token->[2];
1371: } elsif ($target eq 'tex') {
1372: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1373: if (defined $fontsize) {
1374: $currentstring = '}';
1375: }
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <strike> tag (end tag required)
1381: sub start_strike {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: &Apache::lonxml::startredirection();
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_strike {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: } elsif ($target eq 'tex') {
1398: $currentstring=&Apache::lonxml::endredirection();
1399: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1400: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1401: $currentstring=~s/(\S)\s*$/$1\}/;
1402: }
1403: return $currentstring;
1404: }
1405:
1406: #-- <s> tag (end tag required)
1407: sub start_s {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[4];
1412: } elsif ($target eq 'tex') {
1413: &Apache::lonxml::startredirection();
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_s {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[2];
1423: } elsif ($target eq 'tex') {
1424: $currentstring=&Apache::lonxml::endredirection();
1425: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1426: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1427: $currentstring=~s/(\S)\s*$/$1\}/;
1428: }
1429: return $currentstring;
1430: }
1431:
1432: #-- <sub> tag (end tag required)
1433: sub start_sub {
1434: my ($target,$token) = @_;
1435: my $currentstring = '';
1436: if ($target eq 'web' || $target eq 'webgrade') {
1437: $currentstring .= $token->[4];
1438: } elsif ($target eq 'tex') {
1439: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1440: }
1441: return $currentstring;
1442: }
1443:
1444: sub end_sub {
1445: my ($target,$token) = @_;
1446: my $currentstring = '';
1447: if ($target eq 'web' || $target eq 'webgrade') {
1448: $currentstring .= $token->[2];
1449: } elsif ($target eq 'tex') {
1450: $currentstring .= '}}';
1451: }
1452: return $currentstring;
1453: }
1454:
1455: #-- <sup> tag (end tag required)
1456: sub start_sup {
1457: my ($target,$token) = @_;
1458: my $currentstring = '';
1459: if ($target eq 'web' || $target eq 'webgrade') {
1460: $currentstring .= $token->[4];
1461: } elsif ($target eq 'tex') {
1462: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1463: }
1464: return $currentstring;
1465: }
1466:
1467: sub end_sup {
1468: my ($target,$token) = @_;
1469: my $currentstring = '';
1470: if ($target eq 'web' || $target eq 'webgrade') {
1471: $currentstring .= $token->[2];
1472: } elsif ($target eq 'tex') {
1473: $currentstring .= '}}';
1474: }
1475: return $currentstring;
1476: }
1477:
1478: #-- <hr> tag (end tag forbidden)
1479: sub start_hr {
1480: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1481: my $currentstring = &end_p(); # End enclosing para.
1482: if ($target eq 'web' || $target eq 'webgrade') {
1483: $currentstring .= $token->[4];
1484: } elsif ($target eq 'tex') {
1485:
1486: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1487: #
1488: my $restart_sub = 0;
1489: my $restart_sup = 0;
1490:
1491: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1492: # using the start_ stop_ functions.. those tags only care about
1493: # $target.
1494:
1495: if (&is_inside_of($tagstack, "sub")) {
1496: $restart_sub = 1;
1497: $currentstring .= &end_sub($target, $token, $tagstack,
1498: $parstack, $parser, $safeeval);
1499: }
1500: if (&is_inside_of($tagstack, "sup")) {
1501: $restart_sup = 1;
1502: $currentstring .= &end_sup($target, $token, $tagstack,
1503: $parstack, $parser, $safeeval);
1504: }
1505:
1506: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1507: if (defined $LaTeXwidth) {
1508: if ($LaTeXwidth=~/^%/) {
1509: substr($LaTeXwidth,0,1)='';
1510: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1511: }
1512: } else {
1513: $LaTeXwidth ='0.9\textwidth';
1514: }
1515: my ($pre,$post);
1516: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1517: if (($align eq 'center') || (not defined $align)) {
1518: $pre=''; $post='';
1519: } elsif ($align eq 'left') {
1520: $pre='\rlap{'; $post='} \hfill';
1521: } elsif ($align eq 'right') {
1522: $pre=' \hfill \llap{'; $post='}';
1523: }
1524: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1525: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1526: # Turn stuff back on that we can't be inside of.
1527:
1528: if ($restart_sub) {
1529: $currentstring .= &start_sub($target, $token, $tagstack,
1530: $parstack, $parser, $safeeval);
1531: }
1532: if ($restart_sup) {
1533: $currentstring .= &start_sup($target, $token, $tagstack,
1534: $parstack, $parser, $safeeval);
1535: }
1536: }
1537: return $currentstring;
1538: }
1539:
1540: sub end_hr {
1541: my ($target,$token) = @_;
1542: my $currentstring = '';
1543: if ($target eq 'web' || $target eq 'webgrade') {
1544: $currentstring .= $token->[2];
1545: }
1546: return $currentstring;
1547: }
1548:
1549: #-- <div> tag (end tag required)
1550: {
1551:
1552: # Since div can be nested, the stack below is used
1553: # in 'tex' mode to store the ending strings
1554: # for the div stack.
1555:
1556: my @div_end_stack;
1557:
1558: sub start_div {
1559: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1560: my $currentstring = &end_p(); # Close enclosing para.
1561: if ($target eq 'web' || $target eq 'webgrade') {
1562: $currentstring .= $token->[4];
1563: }
1564: if ($target eq 'tex') {
1565: # 4 possible alignments: left, right, center, and -missing-.
1566: # If inside a table row, we must let the table logic
1567: # do the alignment, however.
1568: #
1569:
1570: my $endstring = '';
1571:
1572: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1573: $safeeval, undef, 1));
1574: if ($align eq 'center') {
1575: $currentstring .= '\begin{center}';
1576: $endstring = '\end{center}';
1577: if (&is_inside_of($tagstack, "table")) {
1578: $currentstring = ¢er_correction().$currentstring;
1579: $endstring .= ¢er_end_correction();
1580: }
1581: }
1582: elsif ($align eq 'right') {
1583: $currentstring .= '\begin{flushright}';
1584: $endstring .= '\end{flushright}';
1585: } elsif ($align eq 'left') {
1586: $currentstring .= '\begin{flushleft}';
1587: $endstring = '\end{flushleft}';
1588: } else {
1589:
1590: }
1591: $currentstring .= "\n"; # For human readability.
1592: $endstring = "\n$endstring\n"; # For human readability
1593: push(@div_end_stack, $endstring);
1594: }
1595: return $currentstring;
1596: }
1597:
1598: sub end_div {
1599: my ($target,$token) = @_;
1600: my $currentstring = '';
1601: if ($target eq 'web' || $target eq 'webgrade') {
1602: $currentstring .= $token->[2];
1603: }
1604: if ($target eq 'tex') {
1605: my $endstring = pop @div_end_stack;
1606: $currentstring .= $endstring;
1607: }
1608: return $currentstring;
1609: }
1610: }
1611:
1612: #-- <a> tag (end tag required)
1613: sub start_a {
1614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1615: my $currentstring = '';
1616: if ($target eq 'web' || $target eq 'webgrade') {
1617: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1618: undef,1);
1619: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1620: if ($href =~ /\S/) {
1621: if ($href !~ m{^https?://}) {
1622: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1623: my $linkurl;
1624: if ($href =~ m{^/uploaded/}) {
1625: $linkurl = $href;
1626: } elsif ($href =~ m{^[^/]}) {
1627: my $path = $url;
1628: $path =~ s{[^/]*$}{};
1629: $linkurl = $path.$href;
1630: }
1631: if ($linkurl =~ m{^/uploaded/}) {
1632: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1633: if (&Apache::lonnet::is_on_map($url)) {
1634: &Apache::lonxml::extlink($linkurl);
1635: }
1636: }
1637: }
1638: }
1639: }
1640: }
1641: return $currentstring;
1642: }
1643:
1644: sub end_a {
1645: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1646: my $currentstring = '';
1647: if ($target eq 'web' || $target eq 'webgrade') {
1648: $currentstring .= $token->[2];
1649: }
1650: if ($target eq 'tex') {
1651: my $href =
1652: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1653: my $name =
1654: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1655: my $uriprint =
1656: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1657: my $anchorprint =
1658: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1659: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1660: $href =~ s/([^\\])%/$1\\\%/g;
1661: # Substitute special symbols... and allow line breaks at each /
1662: #
1663: $href = &Apache::lonxml::latex_special_symbols($href);
1664: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1665: $currentstring .= ' ({\tt URI:'.$href.'})';
1666: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1667: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1668: } else {
1669: $currentstring.='';
1670: }
1671: }
1672: return $currentstring;
1673: }
1674:
1675: #-- <li> tag (end tag optional)
1676: sub start_li {
1677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1678: my $currentstring = '';
1679: if ($target eq 'web' || $target eq 'webgrade') {
1680: $currentstring = $token->[4];
1681: } elsif ($target eq 'tex') {
1682: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1683: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1684: #FIXME need to support types i and I
1685: if ($type=~/disc/) {
1686: $currentstring .= ' \item[$\bullet$] ';
1687: } elsif ($type=~/circle/) {
1688: $currentstring .= ' \item[$\circ$] ';
1689: } elsif ($type=~/square/) {
1690: $currentstring .= ' \item[$\diamond$] ';
1691: } elsif ($type eq '1') {
1692: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1693: } elsif ($type eq 'A') {
1694: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1695: } elsif ($type eq 'a') {
1696: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1697: } elsif ($value ne '') {
1698: $currentstring .= ' \item['.$value.'] ';
1699: } else {
1700: $currentstring .= ' \item ';
1701: }
1702: $Apache::londefdef::list_index++;
1703: }
1704: return $currentstring;
1705: }
1706:
1707: sub end_li {
1708: my ($target,$token) = @_;
1709: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1710: if ($target eq 'web' || $target eq 'webgrade') {
1711: $currentstring .= $token->[2];
1712: }
1713: return $currentstring;
1714: }
1715:
1716: #-- <u> tag (end tag required)
1717: sub start_u {
1718: my ($target,$token) = @_;
1719: my $currentstring = '';
1720: if ($target eq 'web' || $target eq 'webgrade') {
1721: $currentstring .= $token->[4];
1722: } elsif ($target eq 'tex') {
1723: &Apache::lonxml::startredirection();
1724: }
1725: return $currentstring;
1726: }
1727:
1728: sub end_u {
1729: my ($target,$token) = @_;
1730: my $currentstring = '';
1731: if ($target eq 'web' || $target eq 'webgrade') {
1732: $currentstring .= $token->[2];
1733: } elsif ($target eq 'tex') {
1734: $currentstring=&Apache::lonxml::endredirection();
1735: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1736: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1737: $currentstring=~s/(\S)\s*$/$1\}/;
1738: }
1739: return $currentstring;
1740: }
1741:
1742: #-- <ul> tag (end tag required)
1743: sub start_ul {
1744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1745: my $currentstring = &end_p(); # Close off enclosing list.
1746: if ($target eq 'web' || $target eq 'webgrade') {
1747: $currentstring .= $token->[4];
1748: } elsif ($target eq 'tex') {
1749: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1750: $Apache::londefdef::list_index=0;
1751: if ($TeXtype eq 'disc') {
1752: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1753: '\renewcommand{\labelitemii}{$\bullet$}'.
1754: '\renewcommand{\labelitemiii}{$\bullet$}'.
1755: '\renewcommand{\labelitemiv}{$\bullet$}';
1756: } elsif ($TeXtype eq 'circle') {
1757: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1758: '\renewcommand{\labelitemii}{$\circ$}'.
1759: '\renewcommand{\labelitemiii}{$\circ$}'.
1760: '\renewcommand{\labelitemiv}{$\circ$}';
1761: } elsif ($TeXtype eq 'square') {
1762: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1763: '\renewcommand{\labelitemii}{$\diamond$}'.
1764: '\renewcommand{\labelitemiii}{$\diamond$}'.
1765: '\renewcommand{\labelitemiv}{$\diamond$}';
1766: }
1767: $currentstring .= '\strut \begin{itemize}';
1768: }
1769: return $currentstring;
1770: }
1771:
1772: sub end_ul {
1773: my ($target,$token) = @_;
1774: my $currentstring = '';
1775: if ($target eq 'web' || $target eq 'webgrade') {
1776: $currentstring = $token->[2];
1777: } elsif ($target eq 'tex') {
1778: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1779: '\renewcommand{\labelitemii}{$\bullet$}'.
1780: '\renewcommand{\labelitemiii}{$\bullet$}'.
1781: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1782: }
1783: return $currentstring;
1784: }
1785:
1786: #-- <menu> tag (end tag required)
1787: sub start_menu {
1788: my ($target,$token) = @_;
1789: my $currentstring = '';
1790: if ($target eq 'web' || $target eq 'webgrade') {
1791: $currentstring = $token->[4];
1792: } elsif ($target eq 'tex') {
1793: $currentstring = " \\begin{itemize} ";
1794: }
1795: return $currentstring;
1796: }
1797:
1798: sub end_menu {
1799: my ($target,$token) = @_;
1800: my $currentstring = '';
1801: if ($target eq 'web' || $target eq 'webgrade') {
1802: $currentstring = $token->[2];
1803: } elsif ($target eq 'tex') {
1804: $currentstring = " \\end{itemize}";
1805: }
1806: return $currentstring;
1807: }
1808:
1809: #-- <dir> tag (end tag required)
1810: sub start_dir {
1811: my ($target,$token) = @_;
1812: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1813: if ($target eq 'web' || $target eq 'webgrade') {
1814: $currentstring .= $token->[4];
1815: } elsif ($target eq 'tex') {
1816: $currentstring .= " \\begin{itemize} ";
1817: }
1818: return $currentstring;
1819: }
1820:
1821: sub end_dir {
1822: my ($target,$token) = @_;
1823: my $currentstring = '';
1824: if ($target eq 'web' || $target eq 'webgrade') {
1825: $currentstring = $token->[2];
1826: } elsif ($target eq 'tex') {
1827: $currentstring = " \\end{itemize}";
1828: }
1829: return $currentstring;
1830: }
1831:
1832: #-- <ol> tag (end tag required)
1833: sub start_ol {
1834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1835: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring .= $token->[4];
1838: } elsif ($target eq 'tex') {
1839: $Apache::londefdef::list_index=0;
1840: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1841: if ($type eq '1') {
1842: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1843: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1844: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1845: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1846: } elsif ($type eq 'A') {
1847: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1848: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1849: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1850: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1851: } elsif ($type eq 'a') {
1852: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1853: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1854: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1855: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1856: } elsif ($type eq 'i') {
1857: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1858: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1859: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1860: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1861: } elsif ($type eq 'I') {
1862: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1863: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1864: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1865: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1866: }
1867: $currentstring .= '\strut \begin{enumerate}';
1868: }
1869: return $currentstring;
1870: }
1871:
1872: sub end_ol {
1873: my ($target,$token) = @_;
1874: my $currentstring = '';
1875: if ($target eq 'web' || $target eq 'webgrade') {
1876: $currentstring = $token->[2];
1877: } elsif ($target eq 'tex') {
1878: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1879: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1880: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1881: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1882: }
1883: return $currentstring;
1884: }
1885:
1886: #-- <dl> tag (end tag required)
1887: sub start_dl {
1888: my ($target,$token) = @_;
1889: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1890: if ($target eq 'web' || $target eq 'webgrade') {
1891: $currentstring .= $token->[4];
1892: } elsif ($target eq 'tex') {
1893: $currentstring .= '\begin{description}';
1894: $Apache::londefdef::DL++;
1895: push(@Apache::londefdef::description,[]);
1896: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1897: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1898: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1899: }
1900: return $currentstring;
1901: }
1902:
1903: sub end_dl {
1904: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1905: my $currentstring = '';
1906: if ($target eq 'web' || $target eq 'webgrade') {
1907: $currentstring = $token->[2];
1908: } elsif ($target eq 'tex') {
1909: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1910: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1911: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1912: $currentstring.=' '.$element.' ';
1913: }
1914: pop(@Apache::londefdef::description);
1915: $currentstring.='\end{description}';
1916: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1917: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1918: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1919: $Apache::londefdef::DL--;
1920: }
1921: return $currentstring;
1922: }
1923:
1924: #-- <dt> tag (end tag optional)
1925: sub start_dt {
1926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1927: my $currentstring='';
1928: if ($target eq 'web' || $target eq 'webgrade') {
1929: $currentstring = $token->[4];
1930: } elsif ($target eq 'tex') {
1931: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1932: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1933: &Apache::lonxml::startredirection();
1934: $Apache::londefdef::DT[-1]++;
1935: $Apache::londefdef::seenDT[-1]=1;
1936: }
1937: return $currentstring;
1938: }
1939:
1940: sub end_dt {
1941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1942: my $currentstring = '';
1943: if ($target eq 'web' || $target eq 'webgrade') {
1944: $currentstring = $token->[2];
1945: } elsif ($target eq 'tex') {
1946: if ($Apache::londefdef::DT[-1]) {
1947: my $data=&item_cleanup();
1948: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1949: $Apache::londefdef::DT[-1]--;
1950: }
1951: }
1952: return $currentstring;
1953: }
1954:
1955: sub item_cleanup {
1956: my $item=&Apache::lonxml::endredirection();
1957: $item=~s/\\begin{center}//g;
1958: $item=~s/\\end{center}//g;
1959: return $item;
1960: }
1961:
1962: #-- <dd> tag (end tag optional)
1963: sub start_dd {
1964: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1965: my $currentstring = '';
1966: if ($target eq 'web' || $target eq 'webgrade') {
1967: $currentstring = $token->[4];
1968: } elsif ($target eq 'tex') {
1969: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1970: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1971: if (!$Apache::londefdef::seenDT[-1]) {
1972: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1973: }
1974: push(@{$Apache::londefdef::description[-1]},'');
1975: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1976: $Apache::londefdef::DD[-1]++;
1977: &Apache::lonxml::startredirection();
1978: }
1979: return $currentstring;
1980: }
1981:
1982: sub end_dd {
1983: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1984: my $currentstring = '';
1985: if ($target eq 'web' || $target eq 'webgrade') {
1986: $currentstring = $token->[2];
1987: } elsif ($target eq 'tex') {
1988: $Apache::londefdef::description[-1]->[-1].=
1989: &Apache::lonxml::endredirection().' \vskip 0mm ';
1990: $Apache::londefdef::DD[-1]--;
1991: }
1992: return $currentstring;
1993: }
1994:
1995: #-- <table> tag (end tag required)
1996: # <table> also ends any prior <p> that is not closed.
1997: # but, unless I allow <p>'s to nest, that's the
1998: # only way I could think of to allow <p> in
1999: # <tr> <th> bodies
2000: #
2001: #list of supported attributes: border,width,TeXwidth,TeXtheme
2002: # align
2003: sub start_table {
2004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2005: my $textwidth = '';
2006: my $currentstring = &end_p();
2007: if ($target eq 'web' || $target eq 'webgrade') {
2008: $currentstring .= $token->[4];
2009: } elsif ($target eq 'tex') {
2010: &disable_para(); # Can't have paras in a table.
2011:
2012:
2013: # New table code:
2014:
2015: # Get the parameters that we can do something about:
2016:
2017: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2018: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2019: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2020: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2021:
2022: # The only thing that needs any figuring out is the width.. and then only if it is
2023: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2024: #
2025:
2026: my $table = new Apache::lontable();
2027: if ($border ne '') {
2028: $table->table_border(1);
2029: $table->cell_border(1);
2030: }
2031: if ($theme ne '') {
2032: $table->theme($theme);
2033: }
2034: if ($align ne '') {
2035: $table->alignment($align);
2036: }
2037:
2038: # Missing width is most of page width
2039:
2040: if ($width eq "") {
2041: $width = '70%';
2042: }
2043:
2044: # If a percentage, need to calculate what this means in terms of
2045: # page width:
2046:
2047: if ($width =~ /%$/) {
2048: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2049: $width =~ s/%//;
2050: $width = $width * $textwidth / 100.0;
2051: $width .= " mm";
2052: $table->width($width);
2053: }
2054:
2055: push(@Apache::londefdef::table, $table);
2056: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2057:
2058: #--------------------------------------------------------
2059: # Old table code here.
2060: #--------------------------------------------------------
2061:
2062:
2063: if (0) {
2064: push(@Apache::londefdef::table, {});
2065: $Apache::londefdef::table[-1]{'row_number'} = -1;
2066: #maximum table's width (default coincides with text line length)
2067: if ($#Apache::londefdef::table==0) {
2068: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2069: $textwidth=~/(\d+\.?\d*)/;
2070: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2071: } else {
2072: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2073: #the maximum width of nested table is determined by LATeX width of parent cell
2074: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2075: } else {
2076: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2077: $textwidth=$Apache::londefdef::table[-2]{'width'};
2078: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2079: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2080: }
2081: }
2082: }
2083:
2084: # width either comes forced from the TeXwidth or the width parameters.
2085: # in either case it can be a percentage or absolute width.
2086: # in the width case we ignore absolute width
2087: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2088: if (!defined($TeXwidth)) {
2089: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2090: $safeeval,undef,1);
2091: if ($htmlwidth =~ /%/) {
2092: $TeXwidth = $htmlwidth;
2093: } else {
2094: $TeXwidth = $textwidth;
2095: }
2096: }
2097: # if the width is specified as a % it is converted to an absolute width.
2098: # otherwise.. just plugged right in the hash
2099:
2100: if ($TeXwidth=~/%/) {
2101: $TeXwidth=~/(\d+)/;
2102: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2103: } else {
2104: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2105: }
2106: # In the end, however the table width cannot be wider than $textwidth...
2107:
2108: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2109: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2110: }
2111: #table's border
2112: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2113: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2114: unless (defined $border) { $border = 0; }
2115: if ($border) {
2116: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2117: $Apache::londefdef::table[-1]{'vinc'} = '&';
2118: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2119: } else {
2120: $Apache::londefdef::table[-1]{'hinc'} = '';
2121: $Apache::londefdef::table[-1]{'vinc'} = '&';
2122: $Apache::londefdef::table[-1]{'vvinc'} = '';
2123: }
2124: if ($#Apache::londefdef::table==0) {
2125: # Note that \newline seems to destroy the alignment envs.
2126: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2127: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2128: }
2129: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2130: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2131: $Apache::londefdef::table[-1]{'objectlen'}=[];
2132: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2133: $Apache::londefdef::table[-1]{'maxlen'}=[];
2134: $Apache::londefdef::table[-1]{'minlen'}=[];
2135: $Apache::londefdef::table[-1]{'content'}=[];
2136: $Apache::londefdef::table[-1]{'align'}=[];
2137: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2138: }
2139:
2140: }
2141: return $currentstring;
2142: }
2143:
2144: sub end_table {
2145: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2146: my $currentstring = '';
2147: if ($target eq 'web' || $target eq 'webgrade') {
2148: $currentstring = $token->[2];
2149: } elsif ($target eq 'tex') {
2150:
2151:
2152: # New table code:
2153:
2154: my $table = pop(@Apache::londefdef::table);
2155: my $t = $table->generate();
2156: $currentstring = $t->generate_string();
2157: &enable_para();
2158: #--------------------------------------------------------------
2159: # Old table code:
2160: #--------------------------------------------------------------
2161:
2162: if (0) {
2163:
2164: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2165: my $inmemory = '';
2166: my $output = '';
2167: my $WARNING='';
2168: #width of columns from TeXwidth attributes
2169:
2170: # Protect against unbalanced </table> tag.
2171:
2172: if (scalar(@Apache::londefdef::table) > 0) {
2173:
2174: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2175: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2176: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2177: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2178: }
2179: }
2180: }
2181: #free space and number of empty columns
2182: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2183: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2184: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2185: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2186: $empty_columns++;
2187: } else {
2188: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2189: }
2190: }
2191:
2192: #boundaries for contents columns
2193: my @min_len=();#columns can not be narrower
2194: my @max_len=();#maximum length of column
2195: my $avg_max;
2196: my $avg_min;
2197: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2198: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2199: my ($localmin,$localmax)=(0,0);
2200: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2201: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2202: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2203: }
2204: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2205: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2206: }
2207: }
2208: push @min_len, $localmin;
2209: push @max_len, $localmax;
2210: $avg_max = $localmax + $avg_max;
2211: $avg_min = $localmin + $avg_min;
2212: }
2213: # Does not really matter what the average max/min are if there are no cols.
2214: # and this prevents div 0 in that case.
2215:
2216: if ($counter_cols != 0) {
2217: $avg_max = $avg_max/$counter_cols;
2218: $avg_min = $avg_min/$counter_cols;
2219: }
2220:
2221:
2222: # I don't think the below is needed.. but just in case:
2223:
2224: if ($avg_min > $avg_max) {
2225: my $temp = $avg_min;
2226: $avg_min = $avg_max;
2227: $avg_max = $temp;
2228: }
2229:
2230:
2231: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2232: my $localmin=0,;
2233: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2234: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2235: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2236: }
2237: }
2238: if ($max_len[$jn]<$localmin) {
2239: $max_len[$jn]=$localmin;
2240: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2241: }#object size is bigger
2242: if ($min_len[$jn]<$localmin) {
2243: $min_len[$jn]=$localmin;
2244: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2245: }#object size is bigger
2246: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2247: $min_len[$jn]=0;
2248: $max_len[$jn]=0;
2249: }
2250: # Spans seem to be really bothered by max/min = 0. So if we have one
2251: # make it an average joe max/min.
2252:
2253: if ($max_len[$jn] == 0) {
2254: $max_len[$jn] = $avg_max;
2255: }
2256: if ($min_len[$jn] == 0) {
2257: $min_len[$jn] = $avg_min;
2258: }
2259:
2260: }
2261: #final adjustment of column width
2262: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2263: my @adjust=();
2264: #step 1. adjustment by maximum value
2265: my $space_needed=0;
2266: for (my $jn=0;$jn<=$#max_len;$jn++) {
2267: $space_needed=$space_needed+$max_len[$jn];
2268: }
2269: if ($space_needed<=$available_space) {
2270:
2271: for (my $jn=0;$jn<=$#max_len;$jn++) {
2272: if ($fwidth[$jn]==0) {
2273: $fwidth[$jn]=$max_len[$jn];
2274: }
2275: }
2276: } else {
2277: #step 2. adjustment by minimum value (estimation)
2278: $space_needed=0;
2279: for (my $jn=0;$jn<=$#min_len;$jn++) {
2280: $space_needed+=$min_len[$jn];
2281: }
2282: if ($space_needed>$available_space) {
2283: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2284: for (my $jn=0;$jn<=$#max_len;$jn++) {
2285: if ($fwidth[$jn]==0) {
2286: $fwidth[$jn]=$min_len[$jn];
2287: }
2288: }
2289: #check if we have objects which can be scaled
2290: my $how_many_to_scale=0;
2291: my @to_scale=();
2292: for (my $jn=0;$jn<=$#max_len;$jn++) {
2293: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2294: $how_many_to_scale++;
2295: push @to_scale, $jn;
2296: }
2297: }
2298: if ($how_many_to_scale>0) {
2299: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2300: foreach my $jn (@to_scale) {
2301: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2302: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2303: if ($1 ne '') {
2304: my $current_length=&recalc($1);
2305: $current_length=~/(\d+\.?\d*)/;
2306: $current_length=$current_length-$space_to_adjust;
2307: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2308: }
2309: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2310: if ($1 ne '') {
2311: my $current_length=$1;
2312: $current_length=$current_length-$space_to_adjust;
2313: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2314: }
2315: }
2316: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2317: }
2318: }
2319: } else {
2320: #step 3. adjustment over minimal + corrections
2321: my $enlarge_coef=$available_space/$space_needed;
2322: my $acsessive=0;
2323: for (my $jn=0;$jn<=$#min_len;$jn++) {
2324: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2325: if ($adjust[$jn]>$max_len[$jn]) {
2326: $fwidth[$jn]=$max_len[$jn];
2327: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2328: $adjust[$jn]=0;
2329:
2330: }
2331: }
2332: if ($acsessive>0) {
2333: #we have an excess of space and can redistribute it
2334: my $notempty_columns=0;
2335: for (my $jn=0;$jn<=$#min_len;$jn++) {
2336: if ($adjust[$jn]!=0) {
2337: $notempty_columns++;
2338: }
2339: }
2340: my $per_column=$acsessive/$notempty_columns;
2341: for (my $jn=0;$jn<=$#min_len;$jn++) {
2342: if ($adjust[$jn]!=0) {
2343: $adjust[$jn]+=$per_column;
2344: $fwidth[$jn]=$adjust[$jn];
2345: }
2346: }
2347: } else {
2348: for (my $jn=0;$jn<=$#min_len;$jn++) {
2349: $fwidth[$jn]=$adjust[$jn];
2350: }
2351: }
2352: }
2353: }
2354: # use all available width or specified width as if not specified,
2355: # the specified width gets defaulted to the available width.
2356:
2357: my $current=0;
2358: for (my $i=0;$i<=$#fwidth;$i++) {
2359: $current+=$fwidth[$i];
2360: }
2361: if ($current == 0) {
2362: $current = $Apache::londefdef::table[-1]{'width'};
2363: }
2364: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2365: for (my $i=0;$i<=$#fwidth;$i++) {
2366: $fwidth[$i]*=$coef;
2367: }
2368: #removing of empty columns if allowed
2369: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2370: if ($permission eq 'yes') {
2371: my @cleaned_table=();
2372: my @cleaned_header=();
2373: my $colind=0;
2374: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2375: if ($fwidth[$jn]!=0) {
2376: #we need to copy column
2377: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2378: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2379: $cleaned_header[$colind]=$fwidth[$jn];
2380: }
2381: $colind++;
2382: }
2383: }
2384: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2385: @fwidth=@cleaned_header;
2386: }
2387:
2388:
2389: #construct header of the table
2390: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2391: for (my $in=0;$in<=$#fwidth;$in++) {
2392: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2393: }
2394: $header_of_table .= '}';
2395:
2396: #fill the table
2397: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2398: my $have_rowspan = 0;
2399: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2400:
2401: #-----------------------------------------------------------
2402: # I think this order of doing things will ensure that
2403: # single rowspan, columspan and combined row/colspans will
2404: # work correctly. LaTeX is delicate here.
2405: # RF.
2406:
2407: # Start a rowspan if necessary:
2408:
2409: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2410: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2411: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2412: #
2413: # Do the appropriate magic if this has a colspan
2414: #
2415:
2416: my $border_char = "";
2417: if ($border) {
2418: $border_char = "|";
2419: }
2420: my $spanwidth = 0;
2421: if ($colspan > 1) {
2422: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2423: $spanwidth += $fwidth[$spancol];
2424: }
2425: $output .= '\multicolumn{'.
2426: $colspan
2427: ."}";
2428: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2429: $output .= '{'.$border_char.'c'.$border_char.'}{';
2430: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2431: $output .= '{'.$border_char.'r'.$border_char.'}{';
2432: }
2433: else {
2434: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2435: }
2436:
2437: } else {
2438: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2439: }
2440:
2441: # Rowspan... if colspan is 1, and there's an alignment we'll need
2442: # to kick in a multicolumn in order to get the alignment spec.
2443: # this must precede the multirow or LaTex gets quite upset.
2444: # Naturally if colspan > 1 we've already done that above ^
2445: #
2446: my $multirow_aligned = 0;
2447: if ($rowspan > 1) {
2448: if ($colspan == 1) {
2449: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2450: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2451: $multirow_aligned = 1;
2452: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2453: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2454: $multirow_aligned = 1;
2455: }
2456: }
2457: $have_rowspan++;
2458: if ($multirow_aligned) {
2459: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2460: } else {
2461: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2462: }
2463:
2464: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2465: s{^\s*\\par\s*}{};
2466: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2467: s{\s*\\vskip\s*0pt\s*$}{};
2468:
2469: #
2470: # If we did not throw in a multicolumn to align, then add
2471: # an extra {
2472: # so we close correctly without having to keep additional state
2473: # around
2474: #
2475: if (!$multirow_aligned) {
2476: $output .= '{';
2477: }
2478: }
2479: if (($rowspan eq '^') || ($rowspan eq '_')) {
2480: $have_rowspan++;
2481: }
2482: #--------------------------------------------------------------
2483:
2484:
2485: # For right and center alignment of single cells.
2486: # we are going to use a multicolumn with a span of 1 to specify alignment.
2487: #
2488: if ($colspan == 1 && $rowspan == 1) {
2489: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2490: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2491: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2492: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2493: }
2494: }
2495:
2496: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2497:
2498: if (($colspan == 1 && $rowspan == 1) &&
2499: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2500: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2501: $output .= '}';
2502: }
2503:
2504: # Close off any open multirow:
2505:
2506: if ($rowspan > 1) {
2507: $output .= '}}';
2508: }
2509: # Close off the colspan...
2510: #
2511: if ($colspan > 1) {
2512: $output .= '}';
2513: $jn += $colspan-1; # Adjust for number of rows really left.
2514: }
2515: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2516: }
2517: # If have_rowspan > 0, and borders are on, then
2518: # we need to do more than put an \hline at the bottom of row.
2519: # we need to do the appropriate \cline to ensure that
2520: # the spanned rows don't have \hlines through them.
2521:
2522: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2523: $output .= ' \\\\ ';
2524: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2525: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2526: if ($rowspan ne "^") {
2527: if (($rowspan <= 1) || ($rowspan eq '_')) {
2528: my $column = $jn+1;
2529: $output .= '\cline{'.$column.'-'.$column.'} ';
2530: }
2531: }
2532: }
2533:
2534: } else {
2535: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2536: }
2537: }
2538: # Note that \newline destroys alignment env's produced by e.g. <div>
2539: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2540: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2541: if ($#Apache::londefdef::table > 0) {
2542: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2543: # Figure out max/and min width by summing us and then
2544: # apply that to the current column of the table we nest in
2545: # if it's larger than the current width or the current width
2546: # is undefined.
2547: #
2548: my $min_nested_width = 0;
2549: my $max_nested_width = 0;
2550: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2551: $min_nested_width += $min_len[$col];
2552: $max_nested_width += $max_len[$col];
2553:
2554: }
2555: # Fudge in an extra 5 mm for borders etc:
2556:
2557: $min_nested_width += 5;
2558: $max_nested_width += 5;
2559:
2560: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2561: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2562: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2563: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2564: }
2565: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2566: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2567: }
2568:
2569: pop @Apache::londefdef::table;
2570: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2571: } else {
2572: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2573: pop @Apache::londefdef::table;
2574: undef @Apache::londefdef::table;
2575: }
2576: }
2577: &enable_para();
2578: }
2579: }
2580: return $currentstring;
2581: }
2582:
2583: #-- <tr> tag (end tag optional)
2584: sub start_tr {
2585: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2586: my $currentstring = '';
2587: if ($target eq 'web' || $target eq 'webgrade') {
2588: $currentstring = $token->[4];
2589: } elsif ($target eq 'tex') {
2590:
2591: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2592: $Apache::londefdef::table[-1]->start_row();
2593:
2594: if ($align ne '') {
2595: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2596: }
2597:
2598: #---------------------------------------------------------------
2599: # Old table code.
2600: #---------------------------------------------------------------
2601:
2602: if (0) {
2603: $Apache::londefdef::table[-1]{'row_number'}++;
2604: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2605: if ($alignchar ne '') {
2606: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2607: } else {
2608: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2609: }
2610: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2611: #
2612: # Need to save the number of table columns to preserve the max # columns.
2613: #
2614: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2615: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2616: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2617: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2618: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2619: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2620: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2621: }
2622: }
2623: return $currentstring;
2624: }
2625:
2626: sub end_tr {
2627: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2628: my $currentstring = &end_p(); # Close any pending <p> in the row.
2629: if ($target eq 'web' || $target eq 'webgrade') {
2630: $currentstring .= $token->[2];
2631: } elsif ($target eq 'tex') {
2632:
2633: # In case the user is missing a </td> or </th> tag:
2634:
2635: if ($Apache::londefdef::TD_redirection) {
2636: &end_td_tex($parstack,$parser,$safeeval);
2637: }
2638: $Apache::londefdef::table[-1]->end_row();
2639:
2640: #-----------------------------------------------
2641: # Old table code
2642: #-----------------------------------------------
2643:
2644: if (0) {
2645: if ($Apache::londefdef::TD_redirection) {
2646: &end_td_tex($parstack,$parser,$safeeval);
2647: }
2648: # Counter columns must be the maximum number of columns seen
2649: # in the table so far so:
2650: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2651: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2652: }
2653: }
2654:
2655:
2656: }
2657: return $currentstring;
2658: }
2659:
2660: #-- <td> tag (end tag optional)
2661: sub start_td {
2662: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2663: my $currentstring = '';
2664: if ($target eq 'web' || $target eq 'webgrade') {
2665: $currentstring = $token->[4];
2666: } elsif ($target eq 'tex') {
2667: $Apache::londefdef::TD_redirection = 1;
2668: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2669: }
2670: return $currentstring;
2671: }
2672:
2673: sub tag_check {
2674: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2675: my @ar=@$parstack;
2676: for (my $i=$#ar-1;$i>=0;$i--) {
2677: if (lc($$tagstack[$i]) eq $good_tag) {
2678: &start_td_tex($parstack,$parser,$safeeval);
2679: last;
2680: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2681: splice @ar, $i+1;
2682: &end_td_tex(\@ar,$parser,$safeeval);
2683: &start_td_tex($parstack,$parser,$safeeval);
2684: last;
2685: }
2686: }
2687: return '';
2688: }
2689:
2690: #
2691: # Factor out cell configuration hash generation:
2692: #
2693:
2694: sub cell_config_hash {
2695: my ($align, $rowspan, $colspan) = @_;
2696: my %config;
2697: if ($align ne '') {
2698: $config{'halign'} = $align;
2699: }
2700: if ($colspan ne "") {
2701: $config{'colspan'} = $colspan;
2702: }
2703: if ($rowspan ne '') {
2704: $config{'rowspan'} = $rowspan;
2705: }
2706: return \%config;
2707: }
2708:
2709: sub start_td_tex {
2710: my ($parstack,$parser,$safeeval) = @_;
2711:
2712: # At this stage, an empty cell is created with the
2713: # appropriate rowspan/colspan and alignment
2714: # attributes, but empty of text. end_td_tex will
2715: # fetch the contents from the recursive parse and
2716: # fill the cell with them:
2717: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2718: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2719: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2720:
2721: my $config = &cell_config_hash($align, $rowspan, $colspan);
2722:
2723: my $table = $Apache::londefdef::table[-1];
2724: $table->add_cell('', $config);
2725:
2726:
2727: #------------------------------------------------
2728: # Old table code.
2729: #------------------------------------------------
2730:
2731: if (0) {
2732:
2733: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2734: if ($alignchar eq '') {
2735: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2736: }
2737: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2738: $Apache::londefdef::table[-1]{'counter_columns'}++;
2739: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2740: if (defined $TeXwidth) {
2741: my $current_length=&recalc($TeXwidth);
2742: $current_length=~/(\d+\.?\d*)/;
2743: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2744: }
2745: }
2746: &Apache::lonxml::startredirection();
2747: return '';
2748: }
2749:
2750: sub end_td_tex {
2751:
2752: my $text = &Apache::lonxml::endredirection();
2753: my $table = $Apache::londefdef::table[-1];
2754: $table->append_cell_text($text);
2755:
2756: #-------------------------------------------------
2757: # Old table code
2758: #-------------------------------------------------
2759:
2760: if (0) {
2761: my ($parstack,$parser,$safeeval) = @_;
2762: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2763: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2764: my $data = &Apache::lonxml::endredirection();
2765:
2766: # The rowspan array of the table indicates which cells are part of a span.
2767: # n indicates the start of a span set of n rows.
2768: # ^ indicates a cell that continues a span set.
2769: # _ indicates the cell is at the bottom of a span set.
2770: # If this and subsequent cells are part of a rowspan, we must
2771: # push along the row until we find one that is not.
2772:
2773: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2774: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2775: # Part of a span.
2776: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2777: $current_column++;
2778: }
2779: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2780:
2781:
2782: # Get the column and row spans.
2783: # Colspan can be done via \multicolumn if I can figure out the data structs.
2784:
2785: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2786: if (!$colspan) {
2787: $colspan = 1;
2788: }
2789:
2790: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2791: if (!$rowspan) {
2792: $rowspan = 1;
2793: }
2794:
2795:
2796:
2797: for (my $c = 0; $c < $colspan; $c++) {
2798: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2799: for (my $i = 1; $i < $rowspan; $i++) {
2800: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2801: if ($i == ($rowspan-1)) {
2802: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2803: }
2804: }
2805: }
2806:
2807: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2808: if (defined $TeXwidth) {
2809: for (my $c = 0; $c < $colspan; $c++) {
2810: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2811: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2812: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2813: }
2814: } else {
2815: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2816: my $garbage_data=$data;
2817: my $fwidth=0;
2818: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2819: my $current_length=&recalc($1);
2820: $current_length=~/(\d+\.?\d*)/;
2821: if ($fwidth<$1) {$fwidth=$1;}
2822: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2823: }
2824: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2825: my $current_length=$1;
2826: if ($fwidth<$current_length) {$fwidth=$current_length;}
2827: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2828: }
2829: for (my $c = 0; $c < $colspan; $c++) {
2830: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2831: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2832: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2833: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2834: }
2835: } 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)*/) {
2836: my $garbage_data=$data;
2837: my $fwidth=0;
2838: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2839: my $current_length=&recalc($1);
2840: $current_length=~/(\d+\.?\d*)/;
2841: if ($fwidth<$1) {$fwidth=$1;}
2842: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2843: }
2844: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2845: my $current_length=&recalc($1);
2846: $current_length=~/(\d+\.?\d*)/;
2847: if ($fwidth<$1) {$fwidth=$1;}
2848: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2849: }
2850: for (my $c = 0; $c < $colspan; $c++) {
2851: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2852: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2853: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2854: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2855: }
2856: $data=~s/\\\\\s*$//;
2857: } else {
2858: $data=~s/^\s+(\S.*)/$1/;
2859: $data=~s/(.*\S)\s+$/$1/;
2860: $data=~s/(\s)+/$1/;
2861: my ($current_length,$min_length)=(0,0);
2862: if ($data=~/\\vskip/) {
2863: my $newdata=$data;
2864: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2865: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2866: foreach my $elementdata (@newdata) {
2867: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2868: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2869: my @words=split(/ /,$elementdata);
2870: foreach my $word (@words) {
2871: my $lengthword=2.5*&LATEX_length($word);
2872: if ($min_length<$lengthword) {$min_length=$lengthword;}
2873: }
2874: }
2875: } else {
2876: $current_length=2.5*&LATEX_length($data);
2877: my @words=split(/ /,$data);
2878: foreach my $word (@words) {
2879: my $lengthword=2*&LATEX_length($word);
2880: if ($min_length<$lengthword) {$min_length=$lengthword;}
2881: }
2882: }
2883: for (my $c = 0; $c < $colspan; $c++) {
2884: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2885: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2886: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2887: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2888: }
2889: }
2890: }
2891: # Substitute all of the tables nested in this cell in their appropriate places.
2892:
2893:
2894: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2895: for (my $in=0; $in<=$nested_count; $in++) {
2896: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2897: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2898: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2899: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2900:
2901: }
2902: # Should be be killing off the 'include' elements as they're used up?
2903:
2904: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2905:
2906:
2907:
2908:
2909: # the colspan array will indicate how many columns will be spanned by this
2910: # cell..this requires that counter_columns also be adjusted accordingly
2911: # so that the next bunch of text goes in the right cell. Note that since
2912: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2913: #
2914:
2915: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2916: for (my $i = 0; $i < ($colspan -1); $i++) {
2917: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2918: }
2919: for (my $r = 0; $r < $rowspan; $r++) {
2920: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2921: # Put empty text in spanned cols.
2922:
2923: }
2924:
2925: }
2926:
2927: return '';
2928: }
2929:
2930: sub end_td {
2931: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2932: my $currentstring = '';
2933: if ($target eq 'web' || $target eq 'webgrade') {
2934: $currentstring = $token->[2];
2935: } elsif ($target eq 'tex') {
2936: $Apache::londefdef::TD_redirection =0;
2937: &end_td_tex($parstack,$parser,$safeeval);
2938: }
2939: return $currentstring;
2940: }
2941:
2942: #-- <th> tag (end tag optional)
2943: sub start_th {
2944: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2945: my $currentstring = '';
2946: if ($target eq 'web' || $target eq 'webgrade') {
2947: $currentstring = $token->[4];
2948: } elsif ($target eq 'tex') {
2949: $Apache::londefdef::TD_redirection = 1;
2950: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2951: }
2952: return $currentstring;
2953: }
2954:
2955: sub tagg_check {
2956: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2957: my @ar=@$parstack;
2958: for (my $i=$#ar-1;$i>=0;$i--) {
2959: if (lc($$tagstack[$i]) eq $good_tag) {
2960: &start_th_tex($parstack,$parser,$safeeval);
2961: last;
2962: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2963: splice @ar, $i+1;
2964: &end_th_tex(\@ar,$parser,$safeeval);
2965: &start_th_tex($parstack,$parser,$safeeval);
2966: last;
2967: }
2968: }
2969: return '';
2970: }
2971:
2972: sub start_th_tex {
2973: my ($parstack,$parser,$safeeval) = @_;
2974:
2975: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2976: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2977: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2978:
2979: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2980: my $table = $Apache::londefdef::table[-1];
2981: $table->add_cell('\textbf{', $config);
2982:
2983: #-------------------------------------------------------------------------------------
2984: #
2985: # Old table code.
2986: #
2987: #--------------------------------------------------------------------------------------
2988:
2989: if (0) {
2990:
2991:
2992: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2993: if ($alignchar eq '') {
2994: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2995: }
2996: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2997: $Apache::londefdef::table[-1]{'counter_columns'}++;
2998: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2999: if (defined $TeXwidth) {
3000: my $current_length=&recalc($TeXwidth);
3001: $current_length=~/(\d+\.?\d*)/;
3002: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3003: }
3004: }
3005:
3006: # Accept xml until the </th> tag.
3007:
3008: &Apache::lonxml::startredirection();
3009: return '';
3010: }
3011:
3012: sub end_th_tex {
3013: my ($parstack,$parser,$safeeval) = @_;
3014:
3015: my $table = $Apache::londefdef::table[-1];
3016: my $text = &Apache::lonxml::endredirection();
3017: $table->append_cell_text($text.'}');
3018:
3019: #-----------------------------------------------------------------------------
3020: # Old table code:
3021: #-----------------------------------------------------------------------------
3022:
3023: if (0) {
3024: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3025: my $data=&Apache::lonxml::endredirection();
3026: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3027: if (defined $TeXwidth) {
3028: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3029: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3030: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3031: } else {
3032: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3033: my $garbage_data=$data;
3034: my $fwidth=0;
3035: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3036: my $current_length=&recalc($1);
3037: $current_length=~/(\d+\.?\d*)/;
3038: if ($fwidth<$1) {$fwidth=$1;}
3039: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3040: }
3041: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3042: my $current_length=$1;
3043: if ($fwidth<$current_length) {$fwidth=$current_length;}
3044: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3045: }
3046: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3047: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3048: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3049: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3050: } else {
3051: $data=~s/^\s+(\S.*)/$1/;
3052: $data=~s/(.*\S)\s+$/$1/;
3053: $data=~s/(\s)+/$1/;
3054: my ($current_length,$min_length)=(0,0);
3055: if ($data=~/\\vskip/) {
3056: my $newdata=$data;
3057: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3058: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3059: foreach my $elementdata (@newdata) {
3060: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3061: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3062: my @words=split(/ /,$elementdata);
3063: foreach my $word (@words) {
3064: my $lengthword=2.5*&LATEX_length($word);
3065: if ($min_length<$lengthword) {$min_length=$lengthword;}
3066: }
3067: }
3068: } else {
3069: $current_length=2.5*&LATEX_length($data);
3070: my @words=split(/ /,$data);
3071: foreach my $word (@words) {
3072: my $lengthword=2*&LATEX_length($word);
3073: if ($min_length<$lengthword) {$min_length=$lengthword;}
3074: }
3075: }
3076: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3077: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3078: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3079: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3080: }
3081: }
3082: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3083: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3084: }
3085: #make data bold
3086: $data='\textbf{'.$data.'}';
3087: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3088: }
3089: return'';
3090: }
3091:
3092: sub end_th {
3093: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3094: my $currentstring = &end_p(); # Close any open <p> in the row.
3095: if ($target eq 'web' || $target eq 'webgrade') {
3096: $currentstring .= $token->[2];
3097: } elsif ($target eq 'tex') {
3098: $Apache::londefdef::TD_redirection =0;
3099: &end_th_tex($parstack,$parser,$safeeval);
3100: }
3101: return $currentstring;
3102: }
3103:
3104: #-- <img> tag (end tag forbidden)
3105: #
3106: # Render the <IMG> tag.
3107: # <IMG> has the following attributes (in addition to the
3108: # standard HTML ones:
3109: # TeXwrap - Governs how the tex target will try to wrap text around
3110: # horizontally aligned images.
3111: # TeXwidth - The width of the image when rendered for print (mm).
3112: # TeXheight - The height of the image when rendered for print (mm)
3113: # (Note there seems to also be support for this as a % of page size)
3114: #
3115: sub start_img {
3116: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3117: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3118: undef,1);
3119: if (! $src &&
3120: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3121: ) {
3122: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3123: return '';
3124: }
3125: &Apache::lonxml::extlink($src);
3126: my $currentstring = '';
3127: my $scaling = .3;
3128:
3129: # Render unto browsers that which are the browser's...
3130:
3131: if ($target eq 'web' || $target eq 'webgrade') {
3132: if ($env{'browser.imagesuppress'} ne 'on') {
3133: my $enc = ('yes' eq
3134: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3135: $safeeval)));
3136: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3137: $enc);
3138: } else {
3139: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3140: undef,1);
3141: if (!$alttag) {
3142: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3143: $src);
3144: }
3145: $currentstring.='[IMAGE: '.$alttag.']';
3146: }
3147:
3148: # and render unto TeX that which is LaTeX
3149:
3150: } elsif ($target eq 'tex') {
3151: #
3152: # The alignment will require some superstructure to be put around
3153: # the \includegraphics stuff. At present we can only partially
3154: # simulate the alignments offered by html.
3155: #
3156: #
3157: my $align = lc(&Apache::lonxml::get_param('align',
3158: $parstack,
3159: $safeeval,
3160: undef,1));
3161: if(!$align) {
3162: $align = "bottom"; # This is html's default so it's ours too.
3163: }
3164: #
3165: &Apache::lonxml::debug("Alignemnt = $align");
3166: # LaTeX's image/text wrapping is really bad since it wants to
3167: # make figures float.
3168: # The user has the optional parameter (applicable only to l/r
3169: # alignment to use the picins/parpic directive to get wrapped text
3170: # this is also imperfect.. that's why we give them a choice...
3171: # so they can't yell at us for our choice.
3172: #
3173: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3174: $parstack,
3175: $safeeval,
3176: undef,0);
3177: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3178: if(!$latex_rendering) {
3179: $latex_rendering = "texwrap";
3180: }
3181: # using texwrap inside a table does not work. So, if after all of this,
3182: # texwrap is on, we turn it off if we detect we're in a table:
3183: #
3184: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3185: $latex_rendering = 'parpic';
3186: }
3187:
3188: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3189:
3190: #if original bmp/gif/jpg/png file exist do following:
3191: my $origsrc=$src;
3192: my ($path,$file) = &get_eps_image($src);
3193: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3194: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3195: &Apache::lonxml::debug("path = $path file = $file src = $src");
3196: if (-e $src) {
3197: &Apache::lonxml::debug("$src exists");
3198: my ($height_param,$width_param)=
3199: &image_size($origsrc,0.3,$parstack,$safeeval);
3200: my $size;
3201: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3202: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3203: # Default size if not able to extract that (e.g. eps image).
3204:
3205: # &Apache::lonnet::logthis("Size = $size");
3206:
3207: $size='['.$size;
3208: $size=~s/,$/]/;
3209: $currentstring .= '\graphicspath{{'.$path.'}}'
3210: .'\includegraphics'.$size.'{'.$file.'} ';
3211: my $closure;
3212: ($currentstring, $closure) = &align_latex_image($align,
3213: $latex_rendering,
3214: $currentstring,
3215: $width_param,
3216: $height_param);
3217: $currentstring .= $closure;
3218:
3219: } else {
3220: &Apache::lonxml::debug("$src does not exist");
3221: #original image file doesn't exist so check the alt attribute
3222: my $alt =
3223: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3224: unless ($alt) {
3225: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3226: }
3227:
3228: if ($alt) { $currentstring .= ' '.$alt.' '; }
3229: }
3230:
3231: # And here's where the semi-quote breaks down: allow the user
3232: # to edit the beast as well by rendering the problem for edit:
3233: } elsif ($target eq 'edit') {
3234: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3235: $currentstring .=&Apache::edit::tag_start($target,$token);
3236: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3237: &Apache::edit::browse('src',undef,'alt',$only).' '.
3238: &Apache::edit::search('src',undef,'alt').'<br />';
3239: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3240: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3241: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3242: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3243: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3244: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3245: ['','bottom','middle','top','left','right'],$token,5);
3246: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3247: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3248: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3249: ['no','yes'], $token, 2);
3250: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3251: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3252: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3253: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3254: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3255:
3256: if ($token->[2]{'src'}=~/\$/) {
3257: $currentstring.='Variable image source';
3258: } else {
3259: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3260: if ($width) { $currentstring.=' width="'.$width.'" '; }
3261: if ($height) { $currentstring.=' height="'.$height.'" '; }
3262: $currentstring .= ' />';
3263: }
3264: } elsif ($target eq 'modified') {
3265: my ($osrc,$owidth,$oheight)=
3266: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3267: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3268: $safeeval,'src','alt','align',
3269: 'TeXwidth','TeXheight', 'TeXwrap',
3270: 'width','height','encrypturl');
3271: my ($nsrc,$nwidth,$nheight)=
3272: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3273: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3274: &image_replication($loc);
3275: my ($iwidth,$iheight);
3276: if (-e $loc) {
3277: my $image = Image::Magick->new;
3278: $image->Read($loc);
3279: ($iwidth, $iheight) = ($image->Get('width'),
3280: $image->Get('height'));
3281: }
3282: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3283: # changed image or no size specified,
3284: # if they didn't explicitly change the
3285: # width or height use the ones from the image
3286: if ($iwidth && $iheight) {
3287: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3288: $token->[2]{'width'} = $iwidth;$ctag=1;
3289: }
3290: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3291: $token->[2]{'height'}=$iheight;$ctag=1;
3292: }
3293: }
3294: }
3295: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3296: # if we don't have a width or height
3297: if ($iwidth && $cwidth && !$cheight) {
3298: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3299: }
3300: if ($iheight && $cheight && !$cwidth) {
3301: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3302: }
3303: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3304: }
3305:
3306: return $currentstring;
3307: }
3308:
3309: sub end_img {
3310: my ($target,$token) = @_;
3311: my $currentstring = '';
3312: if ($target eq 'web' || $target eq 'webgrade') {
3313: $currentstring = $token->[2];
3314: } elsif ($target eq 'tex') {
3315: $currentstring = '';
3316: }
3317: return $currentstring;
3318: }
3319:
3320: #-- <applet> tag (end tag required)
3321: sub start_applet {
3322: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3323:
3324: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3325: &Apache::lonxml::extlink($code);
3326: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3327: undef,1);
3328: &Apache::lonxml::extlink($archive);
3329: my $currentstring = '';
3330: if ($target eq 'web' || $target eq 'webgrade') {
3331: if ($env{'browser.appletsuppress'} ne 'on') {
3332: $currentstring = &Apache::lonenc::encrypt_ref($token,
3333: {'code'=>$code,
3334: 'archive'=>$archive}
3335: );
3336: } else {
3337: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3338: $safeeval,undef,1);
3339: unless ($alttag) {
3340: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3341: $code);
3342: }
3343: $currentstring='[APPLET: '.$alttag.']';
3344: }
3345: } elsif ($target eq 'tex') {
3346: # Turn off some stuff we can't be inside thank you LaTeX
3347:
3348:
3349: my $restart_sub = 0;
3350: my $restart_sup = 0;
3351:
3352: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3353: # using the start_ stop_ functions.. those tags only care about
3354: # $target.
3355:
3356: if (&is_inside_of($tagstack, "sub")) {
3357: $restart_sub = 1;
3358: $currentstring .= &end_sub($target, $token, $tagstack,
3359: $parstack, $parser, $safeeval);
3360: }
3361: if (&is_inside_of($tagstack, "sup")) {
3362: $restart_sup = 1;
3363: $currentstring .= &end_sup($target, $token, $tagstack,
3364: $parstack, $parser, $safeeval);
3365: }
3366:
3367: # Now process the applet; just replace it with its alt attribute.
3368:
3369: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3370: $safeeval,undef,1);
3371: unless ($alttag) {
3372: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3373: undef,1);
3374: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3375: $code);
3376: }
3377: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3378: '.}\end{center}';
3379:
3380: # Turn stuff back on that we can't be inside of.
3381:
3382: if ($restart_sub) {
3383: $currentstring .= &start_sub($target, $token, $tagstack,
3384: $parstack, $parser, $safeeval);
3385: }
3386: if ($restart_sup) {
3387: $currentstring .= &start_sup($target, $token, $tagstack,
3388: $parstack, $parser, $safeeval);
3389: }
3390: }
3391: return $currentstring;
3392: }
3393:
3394: sub end_applet {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web' || $target eq 'webgrade') {
3398: $currentstring = $token->[2];
3399: } elsif ($target eq 'tex') {
3400: }
3401: return $currentstring;
3402: }
3403:
3404: #-- <embed> tag (end tag optional/required)
3405: sub start_embed {
3406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3407: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3408: &Apache::lonxml::extlink($src);
3409: my $currentstring = '';
3410: if ($target eq 'web' || $target eq 'webgrade') {
3411: if ($env{'browser.embedsuppress'} ne 'on') {
3412: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3413: } else {
3414: my $alttag=&Apache::lonxml::get_param
3415: ('alt',$parstack,$safeeval,undef,1);
3416: unless ($alttag) {
3417: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3418: }
3419: $currentstring='[EMBED: '.$alttag.']';
3420: }
3421: } elsif ($target eq 'tex') {
3422: }
3423: return $currentstring;
3424: }
3425:
3426: sub end_embed {
3427: my ($target,$token) = @_;
3428: my $currentstring = '';
3429: if ($target eq 'web' || $target eq 'webgrade') {
3430: $currentstring = $token->[2];
3431: } elsif ($target eq 'tex') {
3432: }
3433: return $currentstring;
3434: }
3435:
3436: #-- <param> tag (end tag forbidden)
3437: sub start_param {
3438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3439: if (&Apache::lonxml::get_param('name',$parstack,
3440: $safeeval,undef,1)=~/^cabbase$/i) {
3441: my $value=&Apache::lonxml::get_param('value',$parstack,
3442: $safeeval,undef,1);
3443: &Apache::lonxml::extlink($value);
3444: }
3445:
3446: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3447: &Apache::lonxml::extlink($src);
3448: my $currentstring = '';
3449: if ($target eq 'web' || $target eq 'webgrade') {
3450: my %toconvert;
3451: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3452: if ($src) { $toconvert{'src'}= $src; }
3453: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3454: undef,1);
3455: if ($name=~/^cabbase$/i) {
3456: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3457: $safeeval,undef,1);
3458: }
3459: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3460: } elsif ($target eq 'tex') {
3461: }
3462: return $currentstring;
3463: }
3464:
3465: sub end_param {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web' || $target eq 'webgrade') {
3469: $currentstring = $token->[2];
3470: } elsif ($target eq 'tex') {
3471: }
3472: return $currentstring;
3473: }
3474:
3475: #-- <allow> tag
3476: sub start_allow {
3477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3478: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3479: &Apache::lonxml::extlink($src);
3480:
3481: if ($target eq 'tex') { &image_replication($src); }
3482: my $result;
3483: if ($target eq 'edit') {
3484: $result .=&Apache::edit::tag_start($target,$token);
3485: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3486: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3487: } elsif ($target eq 'modified') {
3488: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3489: $safeeval,'src');
3490: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3491: }
3492: return $result;
3493: }
3494:
3495: sub end_allow {
3496: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3497: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3498: return '';
3499: }
3500:
3501: #-- Frames (end tag required)
3502: #-- <frameset>
3503: sub start_frameset {
3504: my ($target,$token) = @_;
3505: my $currentstring = ''; # Close any pending para.
3506: if ($target eq 'web' || $target eq 'webgrade') {
3507: $currentstring =
3508: &Apache::loncommon::start_page($Apache::londefdef::title,
3509: $Apache::londefdef::head,
3510: {'add_entries' => $token->[2],
3511: 'no_title' => 1,
3512: 'force_register' => 1,
3513: 'frameset' => 1,});
3514:
3515: }
3516: return $currentstring;
3517: }
3518:
3519: sub end_frameset {
3520: my ($target,$token) = @_;
3521: my $currentstring = '';
3522: if ($target eq 'web' || $target eq 'webgrade') {
3523: $currentstring = $token->[2];
3524: }
3525: return $currentstring;
3526: }
3527:
3528: #-- <xmp> (end tag required)
3529: sub start_xmp {
3530: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3531: my $currentstring = '';
3532: if ($target eq 'web' || $target eq 'webgrade') {
3533: $currentstring .= $token->[4];
3534: } elsif ($target eq 'tex') {
3535: $currentstring .= '\begin{verbatim}';
3536: }
3537: return $currentstring;
3538: }
3539:
3540: sub end_xmp {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web' || $target eq 'webgrade') {
3544: $currentstring .= $token->[2];
3545: } elsif ($target eq 'tex') {
3546: $currentstring .= '\end{verbatim}';
3547: }
3548: return $currentstring;
3549: }
3550:
3551: #-- <pre> (end tag required)
3552: sub start_pre {
3553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3554: my $currentstring = &end_p(); # close off pending <p>
3555: if ($target eq 'web' || $target eq 'webgrade') {
3556: $currentstring .= $token->[4];
3557: } elsif ($target eq 'tex') {
3558: $currentstring .= '\begin{verbatim}';
3559: &Apache::lonxml::disable_LaTeX_substitutions();
3560: }
3561: return $currentstring;
3562: }
3563:
3564: sub end_pre {
3565: my ($target,$token) = @_;
3566: my $currentstring = '';
3567: if ($target eq 'web' || $target eq 'webgrade') {
3568: $currentstring .= $token->[2];
3569: } elsif ($target eq 'tex') {
3570: $currentstring .= '\end{verbatim}';
3571: &Apache::lonxml::enable_LaTeX_substitutions();
3572: }
3573: return $currentstring;
3574: }
3575:
3576: #-- <insert>
3577: sub start_insert {
3578: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3582: $currentstring .= '<b>'.$display.'</b>';;
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_insert {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring .= '';
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <externallink>
3597: sub start_externallink {
3598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web' || $target eq 'webgrade') {
3601: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3602: $currentstring .= '<b>'.$display.'</b>';;
3603: }
3604: return $currentstring;
3605: }
3606:
3607: sub end_externallink {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'web' || $target eq 'webgrade') {
3611: $currentstring .= '';
3612: }
3613: return $currentstring;
3614: }
3615:
3616: #-- <blankspace heigth="">
3617: sub start_blankspace {
3618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3619: my $currentstring = &end_p(); # closes off any unclosed <p>
3620: if ($target eq 'tex') {
3621: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3622: $currentstring .= '\vskip '.$howmuch.' ';
3623: }
3624: return $currentstring;
3625: }
3626:
3627: sub end_blankspace {
3628: my ($target,$token) = @_;
3629: my $currentstring = '';
3630: if ($target eq 'tex') {
3631: $currentstring .= '';
3632: }
3633: return $currentstring;
3634: }
3635:
3636: #-- <abbr> tag (end tag required)
3637: sub start_abbr {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web' || $target eq 'webgrade') {
3641: $currentstring = $token->[4];
3642: }
3643: return $currentstring;
3644: }
3645:
3646: sub end_abbr {
3647: my ($target,$token) = @_;
3648: my $currentstring = '';
3649: if ($target eq 'web' || $target eq 'webgrade') {
3650: $currentstring = $token->[2];
3651: }
3652: return $currentstring;
3653: }
3654:
3655: #-- <acronym> tag (end tag required)
3656: sub start_acronym {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web' || $target eq 'webgrade') {
3660: $currentstring = $token->[4];
3661: }
3662: return $currentstring;
3663: }
3664:
3665: sub end_acronym {
3666: my ($target,$token) = @_;
3667: my $currentstring = '';
3668: if ($target eq 'web' || $target eq 'webgrade') {
3669: $currentstring = $token->[2];
3670: }
3671: return $currentstring;
3672: }
3673:
3674: #-- <area> tag (end tag forbidden)
3675: sub start_area {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[4];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: sub end_area {
3685: my ($target,$token) = @_;
3686: my $currentstring = '';
3687: if ($target eq 'web' || $target eq 'webgrade') {
3688: $currentstring = $token->[2];
3689: }
3690: return $currentstring;
3691: }
3692:
3693: #-- <base> tag (end tag forbidden)
3694: sub start_base {
3695: my ($target,$token) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web' || $target eq 'webgrade') {
3698: $currentstring = $token->[4];
3699: }
3700: return $currentstring;
3701: }
3702:
3703: sub end_base {
3704: my ($target,$token) = @_;
3705: my $currentstring = '';
3706: if ($target eq 'web' || $target eq 'webgrade') {
3707: $currentstring = $token->[2];
3708: }
3709: return $currentstring;
3710: }
3711:
3712: #-- <bdo> tag (end tag required)
3713: sub start_bdo {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web' || $target eq 'webgrade') {
3717: $currentstring = $token->[4];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: sub end_bdo {
3723: my ($target,$token) = @_;
3724: my $currentstring = '';
3725: if ($target eq 'web' || $target eq 'webgrade') {
3726: $currentstring = $token->[2];
3727: }
3728: return $currentstring;
3729: }
3730:
3731: #-- <bgsound> tag (end tag optional)
3732: sub start_bgsound {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[4];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: sub end_bgsound {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web' || $target eq 'webgrade') {
3745: $currentstring = $token->[2];
3746: }
3747: return $currentstring;
3748: }
3749:
3750: #-- <blink> tag (end tag required)
3751: sub start_blink {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[4];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: sub end_blink {
3761: my ($target,$token) = @_;
3762: my $currentstring = '';
3763: if ($target eq 'web' || $target eq 'webgrade') {
3764: $currentstring = $token->[2];
3765: }
3766: return $currentstring;
3767: }
3768:
3769: #-- <blockquote> tag (end tag required)
3770: sub start_blockquote {
3771: my ($target,$token) = @_;
3772: my $currentstring = &end_p(); # Close any unclosed <p>
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring .= $token->[4];
3775: }
3776: if ($target eq 'tex') {
3777: $currentstring .= '\begin{quote}';
3778: }
3779: return $currentstring;
3780: }
3781:
3782: sub end_blockquote {
3783: my ($target,$token) = @_;
3784: my $currentstring = '';
3785: if ($target eq 'web' || $target eq 'webgrade') {
3786: $currentstring = $token->[2];
3787: }
3788: if ($target eq 'tex') {
3789: $currentstring = '\end{quote}';
3790: }
3791: return $currentstring;
3792: }
3793:
3794: #-- <button> tag (end tag required)
3795: sub start_button {
3796: my ($target,$token) = @_;
3797: my $currentstring = '';
3798: if ($target eq 'web' || $target eq 'webgrade') {
3799: $currentstring = $token->[4];
3800: }
3801: return $currentstring;
3802: }
3803:
3804: sub end_button {
3805: my ($target,$token) = @_;
3806: my $currentstring = '';
3807: if ($target eq 'web' || $target eq 'webgrade') {
3808: $currentstring = $token->[2];
3809: }
3810: return $currentstring;
3811: }
3812:
3813: #-- <caption> tag (end tag required)
3814: sub start_caption {
3815: my ($target,$token) = @_;
3816: my $currentstring = '';
3817: if ($target eq 'web' || $target eq 'webgrade') {
3818: $currentstring = $token->[4];
3819: }
3820: return $currentstring;
3821: }
3822:
3823: sub end_caption {
3824: my ($target,$token) = @_;
3825: my $currentstring = '';
3826: if ($target eq 'web' || $target eq 'webgrade') {
3827: $currentstring = $token->[2];
3828: }
3829: return $currentstring;
3830: }
3831:
3832: #-- <col> tag (end tag forbdden)
3833: sub start_col {
3834: my ($target,$token) = @_;
3835: my $currentstring = '';
3836: if ($target eq 'web' || $target eq 'webgrade') {
3837: $currentstring = $token->[4];
3838: }
3839: return $currentstring;
3840: }
3841:
3842: sub end_col {
3843: my ($target,$token) = @_;
3844: my $currentstring = '';
3845: if ($target eq 'web' || $target eq 'webgrade') {
3846: $currentstring = $token->[2];
3847: }
3848: return $currentstring;
3849: }
3850:
3851: #-- <colgroup> tag (end tag optional)
3852: sub start_colgroup {
3853: my ($target,$token) = @_;
3854: my $currentstring = '';
3855: if ($target eq 'web' || $target eq 'webgrade') {
3856: $currentstring = $token->[4];
3857: }
3858: return $currentstring;
3859: }
3860:
3861: sub end_colgroup {
3862: my ($target,$token) = @_;
3863: my $currentstring = '';
3864: if ($target eq 'web' || $target eq 'webgrade') {
3865: $currentstring = $token->[2];
3866: }
3867: return $currentstring;
3868: }
3869:
3870: #-- <del> tag (end tag required)
3871: sub start_del {
3872: my ($target,$token) = @_;
3873: my $currentstring = '';
3874: if ($target eq 'web' || $target eq 'webgrade') {
3875: $currentstring = $token->[4];
3876: }
3877: return $currentstring;
3878: }
3879:
3880: sub end_del {
3881: my ($target,$token) = @_;
3882: my $currentstring = '';
3883: if ($target eq 'web' || $target eq 'webgrade') {
3884: $currentstring = $token->[2];
3885: }
3886: return $currentstring;
3887: }
3888:
3889: #-- <fieldset> tag (end tag required)
3890: sub start_fieldset {
3891: my ($target,$token) = @_;
3892: my $currentstring = '';
3893: if ($target eq 'web' || $target eq 'webgrade') {
3894: $currentstring = $token->[4];
3895: }
3896: return $currentstring;
3897: }
3898:
3899: sub end_fieldset {
3900: my ($target,$token) = @_;
3901: my $currentstring = '';
3902: if ($target eq 'web' || $target eq 'webgrade') {
3903: $currentstring = $token->[2];
3904: }
3905: return $currentstring;
3906: }
3907:
3908: #-- <frame> tag (end tag forbidden)
3909: sub start_frame {
3910: my ($target,$token) = @_;
3911: my $currentstring = '';
3912: if ($target eq 'web' || $target eq 'webgrade') {
3913: $currentstring = $token->[4];
3914: }
3915: return $currentstring;
3916: }
3917:
3918: sub end_frame {
3919: my ($target,$token) = @_;
3920: my $currentstring = '';
3921: if ($target eq 'web' || $target eq 'webgrade') {
3922: $currentstring = $token->[2];
3923: }
3924: return $currentstring;
3925: }
3926:
3927: #-- <iframe> tag (end tag required)
3928: sub start_iframe {
3929: my ($target,$token) = @_;
3930: my $currentstring = '';
3931: if ($target eq 'web' || $target eq 'webgrade') {
3932: $currentstring = $token->[4];
3933: }
3934: return $currentstring;
3935: }
3936:
3937: sub end_iframe {
3938: my ($target,$token) = @_;
3939: my $currentstring = '';
3940: if ($target eq 'web' || $target eq 'webgrade') {
3941: $currentstring = $token->[2];
3942: }
3943: return $currentstring;
3944: }
3945:
3946: #-- <ins> tag (end tag required)
3947: sub start_ins {
3948: my ($target,$token) = @_;
3949: my $currentstring = '';
3950: if ($target eq 'web' || $target eq 'webgrade') {
3951: $currentstring = $token->[4];
3952: }
3953: return $currentstring;
3954: }
3955:
3956: sub end_ins {
3957: my ($target,$token) = @_;
3958: my $currentstring = '';
3959: if ($target eq 'web' || $target eq 'webgrade') {
3960: $currentstring = $token->[2];
3961: }
3962: return $currentstring;
3963: }
3964:
3965: #-- <isindex> tag (end tag forbidden)
3966: sub start_isindex {
3967: my ($target,$token) = @_;
3968: my $currentstring = '';
3969: if ($target eq 'web' || $target eq 'webgrade') {
3970: $currentstring = $token->[4];
3971: }
3972: return $currentstring;
3973: }
3974:
3975: sub end_isindex {
3976: my ($target,$token) = @_;
3977: my $currentstring = '';
3978: if ($target eq 'web' || $target eq 'webgrade') {
3979: $currentstring = $token->[2];
3980: }
3981: return $currentstring;
3982: }
3983:
3984: #-- <keygen> tag (end tag forbidden)
3985: sub start_keygen {
3986: my ($target,$token) = @_;
3987: my $currentstring = '';
3988: if ($target eq 'web' || $target eq 'webgrade') {
3989: $currentstring = $token->[4];
3990: }
3991: return $currentstring;
3992: }
3993:
3994: sub end_keygen {
3995: my ($target,$token) = @_;
3996: my $currentstring = '';
3997: if ($target eq 'web' || $target eq 'webgrade') {
3998: $currentstring = $token->[2];
3999: }
4000: return $currentstring;
4001: }
4002:
4003: #-- <label> tag
4004: sub start_label {
4005: my ($target,$token) = @_;
4006: my $currentstring = '';
4007: if ($target eq 'web' || $target eq 'webgrade') {
4008: $currentstring = $token->[4];
4009: }
4010: return $currentstring;
4011: }
4012:
4013: sub end_label {
4014: my ($target,$token) = @_;
4015: my $currentstring = '';
4016: if ($target eq 'web' || $target eq 'webgrade') {
4017: $currentstring = $token->[2];
4018: }
4019: return $currentstring;
4020: }
4021:
4022: #-- <layer> tag (end tag required)
4023: sub start_layer {
4024: my ($target,$token) = @_;
4025: my $currentstring = '';
4026: if ($target eq 'web' || $target eq 'webgrade') {
4027: $currentstring = $token->[4];
4028: }
4029: return $currentstring;
4030: }
4031:
4032: sub end_layer {
4033: my ($target,$token) = @_;
4034: my $currentstring = '';
4035: if ($target eq 'web' || $target eq 'webgrade') {
4036: $currentstring = $token->[2];
4037: }
4038: return $currentstring;
4039: }
4040:
4041: #-- <legend> tag (end tag required)
4042: sub start_legend {
4043: my ($target,$token) = @_;
4044: my $currentstring = '';
4045: if ($target eq 'web' || $target eq 'webgrade') {
4046: $currentstring = $token->[4];
4047: }
4048: return $currentstring;
4049: }
4050:
4051: sub end_legend {
4052: my ($target,$token) = @_;
4053: my $currentstring = '';
4054: if ($target eq 'web' || $target eq 'webgrade') {
4055: $currentstring = $token->[2];
4056: }
4057: return $currentstring;
4058: }
4059:
4060: #-- <link> tag (end tag forbidden)
4061: sub start_link {
4062: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4063: my $currentstring = '';
4064: if ($target eq 'web' || $target eq 'webgrade') {
4065: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4066: undef,1);
4067: &Apache::lonxml::extlink($href);
4068: $currentstring = $token->[4];
4069: }
4070: return $currentstring;
4071: }
4072:
4073: sub end_link {
4074: my ($target,$token) = @_;
4075: my $currentstring = '';
4076: if ($target eq 'web' || $target eq 'webgrade') {
4077: $currentstring = $token->[2];
4078: }
4079: return $currentstring;
4080: }
4081:
4082: #-- <marquee> tag (end tag optional)
4083: sub start_marquee {
4084: my ($target,$token) = @_;
4085: my $currentstring = '';
4086: if ($target eq 'web' || $target eq 'webgrade') {
4087: $currentstring = $token->[4];
4088: }
4089: return $currentstring;
4090: }
4091:
4092: sub end_marquee {
4093: my ($target,$token) = @_;
4094: my $currentstring = '';
4095: if ($target eq 'web' || $target eq 'webgrade') {
4096: $currentstring = $token->[2];
4097: }
4098: return $currentstring;
4099: }
4100:
4101: #-- <multicol> tag (end tag required)
4102: sub start_multicol {
4103: my ($target,$token) = @_;
4104: my $currentstring = &end_p(); # Close any pending <p>
4105: if ($target eq 'web' || $target eq 'webgrade') {
4106: $currentstring .= $token->[4];
4107: }
4108: return $currentstring;
4109: }
4110:
4111: sub end_multicol {
4112: my ($target,$token) = @_;
4113: my $currentstring = '';
4114: if ($target eq 'web' || $target eq 'webgrade') {
4115: $currentstring = $token->[2];
4116: }
4117: return $currentstring;
4118: }
4119:
4120: #-- <nobr> tag (end tag required)
4121: sub start_nobr {
4122: my ($target,$token) = @_;
4123: my $currentstring = '';
4124: if ($target eq 'web' || $target eq 'webgrade') {
4125: $currentstring = $token->[4];
4126: } elsif ($target eq 'tex') {
4127: $currentstring='\mbox{';
4128: }
4129: return $currentstring;
4130: }
4131:
4132: sub end_nobr {
4133: my ($target,$token) = @_;
4134: my $currentstring = '';
4135: if ($target eq 'web' || $target eq 'webgrade') {
4136: $currentstring = $token->[2];
4137: } elsif ($target eq 'tex') {
4138: $currentstring='}';
4139: }
4140: return $currentstring;
4141: }
4142:
4143: #-- <noembed> tag (end tag required)
4144: sub start_noembed {
4145: my ($target,$token) = @_;
4146: my $currentstring = '';
4147: if ($target eq 'web' || $target eq 'webgrade') {
4148: $currentstring = $token->[4];
4149: }
4150: return $currentstring;
4151: }
4152:
4153: sub end_noembed {
4154: my ($target,$token) = @_;
4155: my $currentstring = '';
4156: if ($target eq 'web' || $target eq 'webgrade') {
4157: $currentstring = $token->[2];
4158: }
4159: return $currentstring;
4160: }
4161:
4162: #-- <noframes> tag (end tag required)
4163: sub start_noframes {
4164: my ($target,$token) = @_;
4165: my $currentstring = '';
4166: if ($target eq 'web' || $target eq 'webgrade') {
4167: $currentstring = $token->[4];
4168: }
4169: return $currentstring;
4170: }
4171:
4172: sub end_noframes {
4173: my ($target,$token) = @_;
4174: my $currentstring = '';
4175: if ($target eq 'web' || $target eq 'webgrade') {
4176: $currentstring = $token->[2];
4177: }
4178: return $currentstring;
4179: }
4180:
4181: #-- <nolayer> tag (end tag required)
4182: sub start_nolayer {
4183: my ($target,$token) = @_;
4184: my $currentstring = '';
4185: if ($target eq 'web' || $target eq 'webgrade') {
4186: $currentstring = $token->[4];
4187: }
4188: return $currentstring;
4189: }
4190:
4191: sub end_nolayer {
4192: my ($target,$token) = @_;
4193: my $currentstring = '';
4194: if ($target eq 'web' || $target eq 'webgrade') {
4195: $currentstring = $token->[2];
4196: }
4197: return $currentstring;
4198: }
4199:
4200: #-- <noscript> tag (end tag required)
4201: sub start_noscript {
4202: my ($target,$token) = @_;
4203: my $currentstring = '';
4204: if ($target eq 'web' || $target eq 'webgrade') {
4205: $currentstring = $token->[4];
4206: }
4207: return $currentstring;
4208: }
4209:
4210: sub end_noscript {
4211: my ($target,$token) = @_;
4212: my $currentstring = '';
4213: if ($target eq 'web' || $target eq 'webgrade') {
4214: $currentstring = $token->[2];
4215: }
4216: return $currentstring;
4217: }
4218:
4219: #-- <object> tag (end tag required)
4220: sub start_object {
4221: my ($target,$token) = @_;
4222: my $currentstring = '';
4223: if ($target eq 'web' || $target eq 'webgrade') {
4224: $currentstring = $token->[4];
4225: }
4226: return $currentstring;
4227: }
4228:
4229: sub end_object {
4230: my ($target,$token) = @_;
4231: my $currentstring = '';
4232: if ($target eq 'web' || $target eq 'webgrade') {
4233: $currentstring = $token->[2];
4234: }
4235: return $currentstring;
4236: }
4237:
4238: #-- <optgroup> tag (end tag required)
4239: sub start_optgroup {
4240: my ($target,$token) = @_;
4241: my $currentstring = '';
4242: if ($target eq 'web' || $target eq 'webgrade') {
4243: $currentstring = $token->[4];
4244: }
4245: return $currentstring;
4246: }
4247:
4248: sub end_optgroup {
4249: my ($target,$token) = @_;
4250: my $currentstring = '';
4251: if ($target eq 'web' || $target eq 'webgrade') {
4252: $currentstring = $token->[2];
4253: }
4254: return $currentstring;
4255: }
4256:
4257: #-- <samp> tag (end tag required)
4258: sub start_samp {
4259: my ($target,$token) = @_;
4260: my $currentstring = '';
4261: if ($target eq 'web' || $target eq 'webgrade') {
4262: $currentstring = $token->[4];
4263: } elsif ($target eq 'tex') {
4264: $currentstring='\texttt{';
4265: }
4266: return $currentstring;
4267: }
4268:
4269: sub end_samp {
4270: my ($target,$token) = @_;
4271: my $currentstring = '';
4272: if ($target eq 'web' || $target eq 'webgrade') {
4273: $currentstring = $token->[2];
4274: } elsif ($target eq 'tex') {
4275: $currentstring='}';
4276: }
4277: return $currentstring;
4278: }
4279:
4280: #-- <server> tag
4281: sub start_server {
4282: my ($target,$token) = @_;
4283: my $currentstring = '';
4284: if ($target eq 'web' || $target eq 'webgrade') {
4285: $currentstring = $token->[4];
4286: }
4287: return $currentstring;
4288: }
4289:
4290: sub end_server {
4291: my ($target,$token) = @_;
4292: my $currentstring = '';
4293: if ($target eq 'web' || $target eq 'webgrade') {
4294: $currentstring = $token->[2];
4295: }
4296: return $currentstring;
4297: }
4298:
4299: #-- <spacer> tag (end tag forbidden)
4300: sub start_spacer {
4301: my ($target,$token) = @_;
4302: my $currentstring = &end_p(); # Close off any open <p> tag.
4303: if ($target eq 'web' || $target eq 'webgrade') {
4304: $currentstring .= $token->[4];
4305: }
4306: return $currentstring;
4307: }
4308:
4309: sub end_spacer {
4310: my ($target,$token) = @_;
4311: my $currentstring = '';
4312: if ($target eq 'web' || $target eq 'webgrade') {
4313: $currentstring = $token->[2];
4314: }
4315: return $currentstring;
4316: }
4317:
4318: #-- <span> tag (end tag required)
4319: sub start_span {
4320: my ($target,$token) = @_;
4321: my $currentstring = '';
4322: if ($target eq 'web' || $target eq 'webgrade') {
4323: $currentstring = $token->[4];
4324: }
4325: return $currentstring;
4326: }
4327:
4328: sub end_span {
4329: my ($target,$token) = @_;
4330: my $currentstring = '';
4331: if ($target eq 'web' || $target eq 'webgrade') {
4332: $currentstring = $token->[2];
4333: }
4334: return $currentstring;
4335: }
4336:
4337: #-- <tbody> tag (end tag optional)
4338: sub start_tbody {
4339: my ($target,$token) = @_;
4340: my $currentstring = '';
4341: if ($target eq 'web' || $target eq 'webgrade') {
4342: $currentstring = $token->[4];
4343: }
4344: return $currentstring;
4345: }
4346:
4347: sub end_tbody {
4348: my ($target,$token) = @_;
4349: my $currentstring = '';
4350: if ($target eq 'web' || $target eq 'webgrade') {
4351: $currentstring = $token->[2];
4352: }
4353: return $currentstring;
4354: }
4355:
4356: #-- <tfoot> tag (end tag optional)
4357: sub start_tfoot {
4358: my ($target,$token) = @_;
4359: my $currentstring = '';
4360: if ($target eq 'web' || $target eq 'webgrade') {
4361: $currentstring = $token->[4];
4362: }
4363: return $currentstring;
4364: }
4365:
4366: sub end_tfoot {
4367: my ($target,$token) = @_;
4368: my $currentstring = '';
4369: if ($target eq 'web' || $target eq 'webgrade') {
4370: $currentstring = $token->[2];
4371: }
4372: return $currentstring;
4373: }
4374:
4375: #-- <thead> tag (end tag optional)
4376: sub start_thead {
4377: my ($target,$token) = @_;
4378: my $currentstring = '';
4379: if ($target eq 'web' || $target eq 'webgrade') {
4380: $currentstring = $token->[4];
4381: }
4382: return $currentstring;
4383: }
4384:
4385: sub end_thead {
4386: my ($target,$token) = @_;
4387: my $currentstring = '';
4388: if ($target eq 'web' || $target eq 'webgrade') {
4389: $currentstring = $token->[2];
4390: }
4391: return $currentstring;
4392: }
4393:
4394: #-- <var> tag
4395: sub start_var {
4396: my ($target,$token) = @_;
4397: my $currentstring = '';
4398: if ($target eq 'web' || $target eq 'webgrade') {
4399: $currentstring = $token->[4];
4400: } elsif ($target eq 'tex') {
4401: $currentstring = '\textit{';
4402: }
4403: return $currentstring;
4404: }
4405:
4406: sub end_var {
4407: my ($target,$token) = @_;
4408: my $currentstring = '';
4409: if ($target eq 'web' || $target eq 'webgrade') {
4410: $currentstring = $token->[2];
4411: } elsif ($target eq 'tex') {
4412: $currentstring = '}';
4413: }
4414: return $currentstring;
4415: }
4416:
4417: #-- <wbr> tag (end tag forbidden)
4418: sub start_wbr {
4419: my ($target,$token) = @_;
4420: my $currentstring = '';
4421: if ($target eq 'web' || $target eq 'webgrade') {
4422: $currentstring = $token->[4];
4423: }
4424: return $currentstring;
4425: }
4426:
4427: sub end_wbr {
4428: my ($target,$token) = @_;
4429: my $currentstring = '';
4430: if ($target eq 'web' || $target eq 'webgrade') {
4431: $currentstring = $token->[2];
4432: }
4433: return $currentstring;
4434: }
4435:
4436: #-- <hideweboutput> tag
4437: sub start_hideweboutput {
4438: my ($target,$token) = @_;
4439: if ($target eq 'web' || $target eq 'webgrade') {
4440: &Apache::lonxml::startredirection();
4441: }
4442: return '';
4443: }
4444:
4445: sub end_hideweboutput {
4446: my ($target,$token) = @_;
4447: my $currentstring = '';
4448: if ($target eq 'web' || $target eq 'webgrade') {
4449: $currentstring = &Apache::lonxml::endredirection();
4450: }
4451: return '';
4452: }
4453:
4454:
4455: sub image_replication {
4456: my $src = shift;
4457: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4458: #replicates eps or ps
4459: my $epssrc = my $pssrc = $src;
4460: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4461: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4462: if (not -e $epssrc && not -e $pssrc) {
4463: my $result=&Apache::lonnet::repcopy($epssrc);
4464: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4465: }
4466: return '';
4467: }
4468:
4469:
4470:
4471: sub resize_image {
4472: my ($height_param, $width_param, $scaling,
4473: $parstack, $safeeval, $depth, $cis) = @_;
4474:
4475: # First apply the scaling...
4476:
4477: $height_param = $height_param * $scaling;
4478: $width_param = $width_param * $scaling;
4479:
4480: #do we have any specified LaTeX size of the picture?
4481: my $toget='TeXwidth';
4482: if ($cis) {
4483: $toget=lc($toget);
4484: }
4485: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4486: $safeeval,$depth,$cis);
4487: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4488: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4489: $safeeval,$depth,$cis);
4490: #do we have any specified web size of the picture?
4491: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4492: $depth,1);
4493: if ($TeXwidth) {
4494: my $old_width_param=$width_param;
4495: if ($TeXwidth=~/(\d+)\s*\%/) {
4496: $width_param = $1*$env{'form.textwidth'}/100;
4497: } else {
4498: $width_param = $TeXwidth;
4499: }
4500: if ($TeXheight) {
4501: $height_param = $TeXheight;
4502: } elsif ($old_width_param) {
4503: $height_param=$TeXwidth/$old_width_param*$height_param;
4504: }
4505: } elsif ($TeXheight) {
4506: $height_param = $TeXheight;
4507: if ($height_param) {
4508: $width_param = $TeXheight/$height_param*$width_param;
4509: }
4510: } elsif ($width) {
4511: my $old_width_param=$width_param;
4512: $width_param = $width*$scaling;
4513: if ($old_width_param) {
4514: $height_param=$width_param/$old_width_param*$height_param;
4515: }
4516: }
4517: if ($width_param > $env{'form.textwidth'}) {
4518: my $old_width_param=$width_param;
4519: $width_param =0.95*$env{'form.textwidth'};
4520: if ($old_width_param) {
4521: $height_param=$width_param/$old_width_param*$height_param;
4522: }
4523: }
4524:
4525: return ($height_param, $width_param);
4526: }
4527:
4528: sub image_size {
4529: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4530:
4531: #size of image from gif/jpg/jpeg/png
4532: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4533: if (-e $ressrc) {
4534: $src = $ressrc;
4535: }
4536: my $image = Image::Magick->new;
4537: my $current_figure = $image->Read($src);
4538: my $width_param = $image->Get('width');
4539: my $height_param = $image->Get('height');
4540: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4541: undef($image);
4542:
4543: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4544: $scaling, $parstack, $safeeval,
4545: $depth, $cis);
4546:
4547: return ($height_param, $width_param);
4548: }
4549:
4550: sub image_width {
4551: my ($height, $width) = &image_size(@_);
4552: return $width;
4553: }
4554: # Not yet 100% sure this is correct in all circumstances..
4555: # due to my uncertainty about mods to image_size.
4556: #
4557: sub image_height {
4558: my ($height, $width) = &image_size(@_);
4559: return $height;
4560: }
4561:
4562: sub get_eps_image {
4563: my ($src)=@_;
4564: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4565:
4566: # In order to prevent the substitution of the alt text, we need to
4567: # be sure the orig_src file is on system now so:
4568:
4569: if (! -e $orig_src) {
4570: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4571: }
4572: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4573: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4574: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4575: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4576: &Apache::lonxml::debug("Filelocation gives: $src");
4577: if (! -e $src) {
4578: &Apache::lonxml::debug("$src does not exist");
4579: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4580: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4581: #if replication failed try to find ps file
4582: $src=~s/\.eps$/\.ps/;
4583: &Apache::lonxml::debug("Now looking for $src");
4584: #if no ps file try to replicate it.
4585: my $didrepcopy = &Apache::lonnet::repcopy($src);
4586: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4587: if ( (not -e $src) ||
4588: ($didrepcopy ne 'ok')) {
4589: &Apache::lonxml::debug("Failed to find or replicate $src");
4590:
4591: #if replication failed try to produce eps file dynamically
4592: $src=~s/\.ps$/\.eps/;
4593: my $temp_file;
4594: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4595: my $newsrc=$orig_src;
4596: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4597: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4598: print FILE ("$newsrc\n");
4599: close(FILE);
4600: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4601: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4602: if ($sext ne "") { # Put the ext. back in to uniquify.
4603: $src =~ s/\.eps$/$sext.eps/;
4604: }
4605:
4606: }
4607:
4608: }
4609: } else {
4610: # If the postscript file has spaces in its name,
4611: # LaTeX will gratuitiously vomit. Therefore
4612: # queue such files for copy with " " replaced by "_".
4613: # printout.pm will know them by their .ps or .eps extensions.
4614: my $newsrc = $orig_src;
4615: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4616: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4617: print FILE "$src\n";
4618: close FILE;
4619: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4620: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4621: }
4622: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4623: $path =~ s/ /\_/g;
4624: $file =~ s/ /\_/g;
4625: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4626: return ($path.'/',$file);
4627: }
4628:
4629: sub eps_generation {
4630: my ($src,$file,$width_param) = @_;
4631: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4632: my $temp_file = Apache::File->new('>>'.$filename);
4633: print $temp_file "$src\n";
4634: my $newsrc = $src;
4635: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4636: $newsrc=~s{/home/httpd/html/res}{};
4637: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4638: $newsrc=~s{/\./}{/};
4639: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4640: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4641: $newsrc=~s{/home/httpd/lonUsers}{};
4642: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4643: }
4644: if ($newsrc=~m{/userfiles/}) {
4645: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4646: } else {
4647: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4648: }
4649: }
4650:
4651: sub file_path {
4652: my $src=shift;
4653: my ($file,$path);
4654: if ($src =~ m!(.*)/([^/]*)$!) {
4655: $file = $2;
4656: $path = $1.'/';
4657: }
4658: return $file,$path;
4659: }
4660:
4661:
4662: sub recalc {
4663: my $argument = shift;
4664: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4665: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4666: my $value=$1;
4667: my $units=$2;
4668: if ($units eq 'cm') {
4669: $value*=10;
4670: } elsif ($units eq 'in') {
4671: $value*=25.4;
4672: } elsif ($units eq 'pc') {
4673: $value*=(25.4*12/72.27);
4674: } elsif ($units eq 'pt') {
4675: $value*=(25.4/72.27);
4676: }
4677: return $value.' mm';
4678: }
4679:
4680: sub LATEX_length {
4681: my $garbage=shift;
4682: $garbage=~s/^\s+$//;
4683: $garbage=~s/^\s+(\S.*)/$1/;#space before
4684: $garbage=~s/(.*\S)\s+$/$1/;#space after
4685: $garbage=~s/(\s)+/$1/;#only one space
4686: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4687: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4688: $garbage=~s/([^\\])\$/$1/g;#$
4689: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4690: $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;
4691: $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;
4692: $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;
4693: $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;
4694: $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;
4695: $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;
4696: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4697: #remove some other LaTeX command
4698: $garbage=~s|\\(\w+)\\|\\|g;
4699: $garbage=~s|\\(\w+)(\s*)|$2|g;
4700: $garbage=~s|\+|11|g;
4701: my $value=length($garbage);
4702: return $value;
4703: }
4704:
4705:
4706: sub align_latex_image {
4707: my ($align, $latex_rendering, $image, $width, $height) = @_;
4708: my $currentstring; # The 1/2 wrapped image.
4709: my $closure; # The closure of the wrappage.
4710:
4711: # if it's none just return it back
4712: if ($latex_rendering eq 'none') {
4713: return ($image,'');
4714: }
4715:
4716: # If there's an alignment specification we need to honor it here.
4717: # For the horizontal alignments, we will also honor the
4718: # value of the latex specfication. The default is parbox,
4719: # and that's used for illegal values too.
4720: #
4721: # Even though we set a default alignment value, the user
4722: # could have given us an illegal value. In that case we
4723: # just use the default alignment of bottom..
4724: $currentstring = "\n% figurewrapping \n";
4725: if ($align eq "top") {
4726: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4727: $closure = '}';
4728: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4729: my $offset = $height/2;
4730: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4731: $closure = '}';
4732: } elsif ($align eq "left") {
4733: if ($latex_rendering eq "parpic") {
4734: $currentstring .= '\parpic[l]{'.$image;
4735: $closure = '}';
4736: } elsif ($latex_rendering eq "parbox") {
4737: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4738: .$image;
4739: $closure = '\end{minipage}';
4740: } elsif ($latex_rendering eq "wrapfigure"
4741: || $latex_rendering ne 'none') { # wrapfig render
4742: $currentstring .=
4743: '\begin{wrapfigure}{l}{'.$width.'mm}'
4744: .'\scalebox{1.0}{'.$image;
4745: $closure = '}\end{wrapfigure}';
4746: }
4747: } elsif ($align eq "right") {
4748: if ($latex_rendering eq "parpic") {
4749: $currentstring .= '\parpic[r]{'.$image;
4750: $closure = '}';
4751: } elsif ($latex_rendering eq "parbox") {
4752: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4753: .$image;
4754: $closure = '\end{minipage}';
4755: } elsif ($latex_rendering eq "wrapfigure"
4756: || $latex_rendering ne 'none') { # wrapfig render
4757: $currentstring .=
4758: '\begin{wrapfigure}{r}{'.$width.'mm}'
4759: .'\scalebox{1.0}{'.$image;
4760: $closure = '}\end{wrapfigure}';
4761: }
4762: } else { # Bottom is also default.
4763: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4764: $currentstring .= "{$image";
4765: $closure = '}';
4766: }
4767: $currentstring .= "\n% end wrappage\n";
4768: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4769: return ($currentstring, $closure);
4770: }
4771:
4772:
4773: sub is_inside_of {
4774: my ($tagstack, $tag) = @_;
4775: my @stack = @$tagstack;
4776: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4777: if ($stack[$i] eq $tag) {
4778: return 1;
4779: }
4780: }
4781: return 0;
4782: }
4783:
4784:
4785: #
4786: # This sub provides the typical LaTeX prefix matter for tex output:
4787: #
4788: sub latex_header
4789: {
4790: my ($mode) = @_;
4791: my $currentstring = '';
4792:
4793: $currentstring .=
4794: "\n% &Apache::lonxml::londefdef \n" .
4795: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4796: if (($env{'form.latex_type'}=~'batchmode') ||
4797: (!$env{'request.role.adv'}) ||
4798: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4799: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4800: '\renewcommand{\deg}{$^{\circ}$}'.
4801: '\usepackage{multirow}'.
4802: '\usepackage{longtable}'.
4803: '\usepackage{textcomp}'.
4804: '\usepackage{makeidx}'.
4805: '\usepackage[dvips]{graphicx}'.
4806: '\usepackage{wrapfig}'.
4807: '\usepackage{picins}'.
4808: '\usepackage[T1]{fontenc}'."\n".
4809: '\usepackage{lmodern}'."\n".
4810: '\usepackage[postscript]{ucs}'."\n".
4811: '\usepackage[utf8x]{inputenc}'."\n".
4812: '\usepackage{pifont}' ."\n".
4813: '\usepackage{latexsym}'."\n".
4814: '\usepackage{epsfig}'.
4815: "\\usepackage{xtab}\n".
4816: "\\usepackage{tabularx}\n".
4817: "\\usepackage{booktabs}\n".
4818: "\\usepackage{array}\n".
4819: "\\usepackage{colortbl}\n".
4820: "\\usepackage{xcolor}\n".
4821: '\usepackage{calc}'.
4822: '\usepackage{amsmath}'.
4823: '\usepackage{amssymb}'.
4824: '\usepackage{amsfonts}'.
4825: '\usepackage{amsthm}'.
4826: '\usepackage{amscd}'
4827: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4828: '\usepackage[T1]{fontenc}'."\n".
4829: '\usepackage{lmodern}'."\n".
4830: '\usepackage[postscript]{ucs}'."\n".
4831: '\usepackage[utf8x]{inputenc}'."\n".
4832: '\usepackage{pifont}' . "\n";
4833:
4834: if($env{'form.pdfFormFields'} eq 'yes') {
4835: $currentstring .= '\usepackage{hyperref}'.
4836: '\usepackage{eforms}'.
4837: '\usepackage{tabularx}';
4838: }
4839:
4840: $currentstring .= '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
4841: '\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}}';
4842: $currentstring .= '\begin{document}';
4843:
4844: return $currentstring;
4845:
4846: }
4847:
4848: =pod
4849:
4850: =head1 NAME
4851:
4852: Apache::londefdef.pm
4853:
4854: =head1 SYNOPSIS
4855:
4856: Tags Default Definition Module
4857:
4858: This is part of the LearningOnline Network with CAPA project
4859: described at http://www.lon-capa.org.
4860:
4861:
4862: =head1 NOTABLE SUBROUTINES
4863:
4864: =over
4865:
4866: =item start_hideweboutput()
4867:
4868: =item end_hideweboutput()
4869:
4870: =item image_replication()
4871:
4872: =item resize_image()
4873:
4874: Get correct sizing parameter for an image given
4875: it's initial ht. and wid. This allows sizing of
4876: images that are generated on-the-fly (e.g. gnuplot)
4877: as well as serving as a utility for image_size.
4878:
4879: Parameter:
4880: height_param
4881: width_param - Initial picture dimensions.
4882: scaling - A scale factor.
4883: parstack, - the current stack of tag attributes
4884: from the xml parser
4885: safeeval, - pointer to the safespace
4886: depth, - from what level in the stack to look for attributes
4887: (assumes -1 if unspecified)
4888: cis - look for attrubutes case insensitively
4889: (assumes false)
4890:
4891: Returns:
4892: height, width - new dimensions.
4893:
4894: =item image_size()
4895:
4896: =item image_width()
4897:
4898: =item image_height()
4899:
4900: =item get_eps_image()
4901:
4902: =item eps_generation()
4903:
4904: =item file_path()
4905:
4906: =item recalc()
4907:
4908: Converts a measurement in to mm from any of
4909: the other valid LaTeX units of measure.
4910: If the units of measure are missing from the
4911: parameter, it is assumed to be in and returned
4912: with mm units of measure
4913:
4914: =item LATEX_length()
4915:
4916: =item align_latex_image()
4917:
4918: Wrap image 'stuff' inside of the LaTeX required to implement
4919: alignment:
4920: align_tex_image(align, latex_rendering, image)
4921: Where:
4922: align - The HTML alignment specification.
4923: latex_rendering - rendering hint for latex.
4924: image - The LaTeX needed to insert the image itsef.
4925: width,height - dimensions of the image.
4926: Returns:
4927: The 1/2 wrapped image and the stuff required to close the
4928: wrappage. This allows e.g. randomlabel to insert more stuff
4929: into the closure.
4930:
4931:
4932: =item is_inside_of($tagstack, $tag)
4933: This sub returns true if the current state of Xml processing is inside of the tag.
4934: Parameters:
4935: tagstack - The tagstack from the parser.
4936: tag - The tag (without the <>'s.).
4937: Sample usage:
4938: if (is_inside_of($tagstack "table")) {
4939: I'm in a table....
4940: }
4941:
4942:
4943:
4944: =back
4945:
4946: =cut
4947:
4948:
4949: 1;
4950: __END__
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