File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.440:
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Fri Jul 6 22:46:12 2012 UTC (11 years, 10 months ago) by
raeburn
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CVS tags:
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- Managing dependencies and uploading archive files to a course.
- Support decompression of archive files(e.g., zip files) uploaded to
Supplemental Content.
- Support upload of multiple (linked) web pages to a course, where only
one (containing links to others) is included in a folder (i.e., sequence
file) -- access allowed to others in course context based on httpref.
- When listing unused files in a directory in /docs/ or /supplemental/
exclude files included in httprefs.
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.440 2012/07/06 22:46:12 raeburn 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 Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::loncommon();
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','style','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: if ($env{'form.grade_imsexport'}) {
387: $currentstring = '';
388: }
389: } elsif ($target eq 'meta') {
390: unless (&Apache::lonxml::get_param
391: ('http-equiv',$parstack,$safeeval,undef,1)) {
392: my $name=$token->[2]->{'name'};
393: $name=~tr/A-Z/a-z/;
394: $name=~s/\s/\_/gs;
395: $name=~s/\W//gs;
396: if ($name) {
397: $currentstring='<'.$name;
398: my $display=&Apache::lonxml::get_param
399: ('display',$parstack,$safeeval,undef,1);
400: if ($display) {
401: $display=~s/\"/\'/g;
402: $currentstring.=' display="'.$display.'"';
403: }
404: $currentstring.='>'.
405: &Apache::lonxml::get_param
406: ('content',$parstack,$safeeval,undef,1).
407: '</'.$name.'>';
408: }
409: my $display=&Apache::lonxml::get_param
410: ('display',$parstack,$safeeval,undef,1);
411: if ($display) {
412: $display=&HTML::Entities::encode($display,'<>&"');
413: $currentstring.='<'.$name.'.display>'.$display.
414: '</'.$name.'.display>';
415: }
416: }
417: } elsif ($target eq 'tex') {
418: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
419: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
420: if ((not defined $content) && (not defined $name)) {
421: &Apache::lonxml::startredirection();
422: }
423: } elsif ($target eq 'edit') {
424: $currentstring .= &Apache::edit::tag_start($target,$token);
425: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
426: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
427: $currentstring .= &Apache::edit::end_row();
428: } elsif ($target eq 'modified') {
429: my $constructtag =
430: &Apache::edit::get_new_args($token,$parstack,$safeeval,
431: 'name','content');
432: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
433: }
434: return $currentstring;
435: }
436:
437: sub end_meta {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
439: my $currentstring = '';
440: if ($target eq 'web' || $target eq 'webgrade') {
441: my $args='';
442: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
443: if ($args ne '') {
444: $currentstring = $token->[4];
445: }
446: } elsif ($target eq 'tex') {
447: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
448: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
449: if ((not defined $content) && (not defined $name)) {
450: &Apache::lonxml::endredirection();
451: }
452: }
453: return $currentstring;
454: }
455:
456: sub insert_meta {
457: return '
458: <meta />';
459: }
460:
461: #-- <start> tag
462: sub start_style {
463: my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
464: my $currentstring = '';
465:
466: if ($target eq 'tex') {
467: Apache::lonxml::startredirection();
468: } else {
469: $currentstring = $token->[4];
470: }
471:
472: return $currentstring;
473: }
474:
475: sub end_style {
476: my ($target, $token, $tagstack, $parstack, $parser, $safeeval) = @_;
477: my $currentstring = '';
478:
479: if ($target eq 'tex') {
480: Apache::lonxml::endredirection();
481: } else {
482: $currentstring = $token->[2];
483: }
484: return $currentstring;
485: }
486:
487: # accessrule
488: sub start_accessrule {
489: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
490: my $currentstring = '';
491: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
492: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
493: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
494: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
495:
496: my ($dom,$crs,$sec,$separator);
497: if ($type eq 'user') {
498: ($dom,$crs,$sec)=split(m{/},$realm);
499: $crs = &LONCAPA::clean_username($crs);
500: $separator = '/';
501: } else {
502: ($dom,$crs,$sec)=split(/\_/,$realm);
503: $crs = &LONCAPA::clean_courseid($crs);
504: $separator = '_';
505: }
506: $dom = &LONCAPA::clean_domain($dom);
507:
508: $sec =~s/\W//;
509: $realm = $dom;
510: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
511: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
512: $role=~s/\W//g;
513:
514: if ($target eq 'web') {
515: my $args='';
516: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
517: if ($args eq '') {
518: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
519: } else {
520: $currentstring = $token->[4];
521: }
522: }
523: if ($target eq 'meta') {
524: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
525: }
526: return $currentstring;
527: }
528:
529: sub end_accessrule {
530: my ($target,$token,$tagstack,$parstack,$parser) = @_;
531: my $currentstring = '';
532: if ($target eq 'web') {
533: my $args='';
534: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
535: if ($args ne '') {
536: $currentstring = $token->[4];
537: }
538: }
539: return $currentstring;
540: }
541:
542: sub generate_css_links {
543: my $links;
544: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
545: if ($css_href =~ /\S/) {
546: &Apache::lonxml::extlink($css_href);
547: $links .=
548: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
549: }
550: return $links;
551: }
552:
553: #-- <body> tag (end tag required)
554: sub start_body {
555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
556: my $currentstring = '';
557:
558: if ($target eq 'web' || $target eq 'webgrade') {
559: if ($Apache::lonhomework::parsing_a_problem) {
560: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
561: return '';
562: }
563:
564: if (&is_inside_of($tagstack, "head")) {
565: &end_head(@_);
566: }
567:
568: my $extra_head = &generate_css_links();
569:
570: # Breadcrumbs
571: &Apache::lonhtmlcommon::clear_breadcrumbs();
572: if ($env{'request.state'} eq 'construct') {
573: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
574: &Apache::lonhtmlcommon::add_breadcrumb({
575: 'text' => 'Construction Space',
576: 'href' => &Apache::loncommon::authorspace($url),
577: });
578: &Apache::lonhtmlcommon::add_breadcrumb({
579: 'text' => 'HTML Editor',
580: 'href' => '',
581: });
582: # breadcrumbs (and tools) will be created
583: # in start_page->bodytag->innerregister
584: } else {
585: # FIXME Where are we?
586: }
587:
588: $currentstring =
589: &Apache::loncommon::start_page($Apache::londefdef::title,
590: $Apache::londefdef::head
591: .$extra_head,
592: {'add_entries' => $token->[2],
593: # 'no_title' => 1,
594: 'force_register' => 1});
595:
596: my $header = '';
597: if ($env{'request.state'} ne 'published' &&
598: $env{'request.state'} ne 'construct') {
599: $header=&Apache::lonmenu::constspaceform();
600: }
601: if ($env{'request.state'} ne 'published') {
602: $header.=&Apache::londefdef::edit_controls();
603: }
604: if ($env{'request.state'} eq 'construct') {
605: $currentstring.=&Apache::loncommon::head_subbox(
606: &Apache::loncommon::CSTR_pageheader()
607: .$header);
608: } elsif ($env{'request.state'} eq 'edit') {
609: $currentstring.=&Apache::loncommon::head_subbox($header);
610: }
611: $currentstring.=&Apache::lonxml::message_location();
612: } elsif ($target eq 'tex') {
613: $currentstring = ''; # '\begin{document}' is in header.
614: }
615:
616: return $currentstring;
617: }
618:
619: sub edit_controls {
620: my ($nochgview) = @_;
621: my $result .= '
622: <form method="post" action="">
623: <div class="LC_edit_problem_header">';
624: unless ($nochgview) {
625: $result .= '
626: <div class="LC_edit_problem_header_row1">'.
627: &Apache::lonxml::renderingoptions().'
628: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
629: </div>';
630: }
631: $result .= '
632: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
633: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
634: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
635: if ($url =~ /\.html?$/i) {
636: my ($symb,$itemtitle,$displayfile) =
637: &Apache::lonxml::get_courseupload_hierarchy($url);
638: if (($symb ne '') || ($env{'httpref.'.$url} ne '')) {
639: $result .= (' ' x 3).
640: &Apache::lonhtmlcommon::dependencies_button()."\n".
641: &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,$url)."\n";
642: }
643: }
644: my $viewtext = &mt('Course View');
645: if (&Apache::loncommon::course_type() eq 'Community') {
646: $viewtext = &mt('Community View');
647: }
648: $result .= (' ' x 3).'<input type="button" value="'.
649: $viewtext.'" onclick="javascript:location.href=currentURL" />';
650: }
651: $result .= '</div>
652: </div>
653: </form>
654: ';
655: return $result;
656: }
657:
658: sub end_body {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
660: my $currentstring = &end_p(); # Close off unclosed <p>
661: if ($target eq 'web' || $target eq 'webgrade') {
662: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
663: } elsif ($target eq 'tex') {
664: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
665: }
666: return $currentstring;
667: }
668:
669: # \begin{center} causes a new paragprah spacing that looks odd inside
670: # of a table cell. Same at the end of a \center but with a slightly
671: # larger space .. hence center_correction and center_end_correction.
672: #
673: sub center_correction { return '\vspace*{-6 mm}'; }
674: sub center_end_correction { return '\vspace*{-7 mm}'; }
675:
676: #-- <center> tag (end tag required)
677: sub start_center {
678: my ($target,$token,$tagstack) = @_;
679: my $currentstring = &end_p(); # Close off any prior para.
680: if ($target eq 'web' || $target eq 'webgrade') {
681: $currentstring .= $token->[4];
682: } elsif ($target eq 'tex') {
683: if (&is_inside_of($tagstack, "table")) {
684: $currentstring .= ¢er_correction();
685: }
686: $currentstring .= '\begin{center}';
687: }
688: return $currentstring;
689: }
690:
691: sub end_center {
692: my ($target,$token,$tagstack) = @_;
693: my $currentstring = '';
694: if ($target eq 'web' || $target eq 'webgrade') {
695: $currentstring = $token->[2];
696: } elsif ($target eq 'tex') {
697: $currentstring = '\end{center}';
698: if (&is_inside_of($tagstack, "table")) {
699: $currentstring .= ¢er_end_correction();
700: }
701: }
702: return $currentstring;
703: }
704:
705: #-- <b> tag (end tag required)
706: # NOTE: In TeX mode disables internal <p>
707: sub start_b {
708: my ($target,$token) = @_;
709: my $currentstring = '';
710: if ($target eq 'web' || $target eq 'webgrade') {
711: $currentstring = $token->[4];
712: } elsif ($target eq 'tex') {
713: &disable_para();
714: $currentstring .= '\textbf{';
715: }
716: return $currentstring;
717: }
718:
719: sub end_b {
720: my ($target,$token) = @_;
721: my $currentstring = '';
722: if ($target eq 'web' || $target eq 'webgrade') {
723: $currentstring = $token->[2];
724: } elsif ($target eq 'tex') {
725: &enable_para();
726: $currentstring = '}';
727: }
728: return $currentstring;
729: }
730:
731: #-- <strong> tag (end tag required)
732: # NOTE: in TeX mode disables internal <p>
733: sub start_strong {
734: my ($target,$token) = @_;
735: my $currentstring = '';
736: if ($target eq 'web' || $target eq 'webgrade') {
737: $currentstring = $token->[4];
738: } elsif ($target eq 'tex') {
739: &disable_para();
740: $currentstring = '\textbf{';
741: }
742: return $currentstring;
743: }
744:
745: sub end_strong {
746: my ($target,$token) = @_;
747: my $currentstring = '';
748: if ($target eq 'web' || $target eq 'webgrade') {
749: $currentstring = $token->[2];
750: } elsif ($target eq 'tex') {
751: &enable_para();
752: $currentstring = '}';
753: }
754: return $currentstring;
755: }
756:
757: #-- <h1> tag (end tag required)
758: sub start_h1 {
759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
760: my $currentstring = &end_p(); # Close off any prior para.
761: if ($target eq 'web' || $target eq 'webgrade') {
762: $currentstring .= $token->[4];
763: } elsif ($target eq 'tex') {
764: my $pre;
765: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
766: if ($align eq 'center') {
767: $pre='\begin{center}';
768: } elsif ($align eq 'left') {
769: $pre='\rlap{';
770: } elsif ($align eq 'right') {
771: $pre=' \hfill \llap{';
772: }
773: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
774: if (not defined $TeXsize) {$TeXsize="large";}
775: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
776: } elsif ($target eq 'meta') {
777: $currentstring.='<subject>';
778: &start_output($target);
779: }
780: return $currentstring;
781: }
782:
783: sub end_h1 {
784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
785: my $currentstring = '';
786: if ($target eq 'web' || $target eq 'webgrade') {
787: $currentstring .= $token->[2];
788: } elsif ($target eq 'tex') {
789: my $post='\vskip 0 mm ';
790: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
791: if ($align eq 'center') {
792: $post='\end{center}';
793: } elsif ($align eq 'left') {
794: $post='} \hfill'.'\vskip 0 mm ';
795: } elsif ($align eq 'right') {
796: $post='}'.'\vskip 0 mm ';
797: }
798: $currentstring .= '}}'.$post;
799: } elsif ($target eq 'meta') {
800: &end_output($target);
801: $currentstring='</subject>';
802: }
803: return $currentstring;
804: }
805:
806: #-- <h2> tag
807: sub start_h2 {
808: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
809: my $currentstring = &end_p(); # Close off any prior para.
810: if ($target eq 'web' || $target eq 'webgrade') {
811: $currentstring .= $token->[4];
812: } elsif ($target eq 'tex') {
813: my $pre;
814: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
815: if ($align eq 'center') {
816: $pre='\begin{center}';
817: } elsif ($align eq 'left') {
818: $pre='\rlap{';
819: } elsif ($align eq 'right') {
820: $pre=' \hfill \llap{';
821: }
822: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
823: if (not defined $TeXsize) {$TeXsize="large";}
824: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
825: }
826: return $currentstring;
827: }
828:
829: sub end_h2 {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
831: my $currentstring = '';
832: if ($target eq 'web' || $target eq 'webgrade') {
833: $currentstring .= $token->[2];
834: } elsif ($target eq 'tex') {
835: my $post='\vskip 0 mm ';
836: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
837: if ($align eq 'center') {
838: $post='\end{center}';
839: } elsif ($align eq 'left') {
840: $post='} \hfill'.'\vskip 0 mm ';
841: } elsif ($align eq 'right') {
842: $post='}'.'\vskip 0 mm ';
843: }
844: $currentstring .= '}}'.$post;
845: }
846: return $currentstring;
847: }
848:
849: #-- <h3> tag
850: sub start_h3 {
851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
852: my $currentstring = &end_p(); # Close off any prior para.
853: if ($target eq 'web' || $target eq 'webgrade') {
854: $currentstring .= $token->[4];
855: } elsif ($target eq 'tex') {
856: my $pre;
857: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
858: if ($align eq 'center') {
859: $pre='\begin{center}';
860: } elsif ($align eq 'left') {
861: $pre='\rlap{';
862: } elsif ($align eq 'right') {
863: $pre=' \hfill \llap{';
864: }
865: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
866: if (not defined $TeXsize) {$TeXsize="large";}
867: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
868: }
869: return $currentstring;
870: }
871:
872: sub end_h3 {
873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
874: my $currentstring = '';
875: if ($target eq 'web' || $target eq 'webgrade') {
876: $currentstring .= $token->[2];
877: } elsif ($target eq 'tex') {
878: my $post='\vskip 0 mm ';
879: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
880: if ($align eq 'center') {
881: $post='\end{center}';
882: } elsif ($align eq 'left') {
883: $post='} \hfill'.'\vskip 0 mm ';
884: } elsif ($align eq 'right') {
885: $post='}'.'\vskip 0 mm ';
886: }
887: $currentstring .= '}}'.$post;
888: }
889: return $currentstring;
890: }
891:
892: #-- <h4> tag
893: sub start_h4 {
894: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
895: my $currentstring = &end_p(); # Close off any prior para.
896: if ($target eq 'web' || $target eq 'webgrade') {
897: $currentstring .= $token->[4];
898: } elsif ($target eq 'tex') {
899: my $pre;
900: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
901: if ($align eq 'center') {
902: $pre='\begin{center}';
903: } elsif ($align eq 'left') {
904: $pre='\rlap{';
905: } elsif ($align eq 'right') {
906: $pre=' \hfill \llap{';
907: }
908: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
909: if (not defined $TeXsize) {$TeXsize="large";}
910: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
911: }
912: return $currentstring;
913: }
914:
915: sub end_h4 {
916: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
917: my $currentstring = '';
918: if ($target eq 'web' || $target eq 'webgrade') {
919: $currentstring .= $token->[2];
920: } elsif ($target eq 'tex') {
921: my $post='\vskip 0 mm ';
922: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
923: if ($align eq 'center') {
924: $post='\end{center}';
925: } elsif ($align eq 'left') {
926: $post='} \hfill'.'\vskip 0 mm ';
927: } elsif ($align eq 'right') {
928: $post='}'.'\vskip 0 mm ';
929: }
930: $currentstring .= '}}'.$post;
931: }
932: return $currentstring;
933: }
934:
935: #-- <h5> tag
936: sub start_h5 {
937: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
938: my $currentstring = &end_p(); # Close off any prior paras.
939: if ($target eq 'web' || $target eq 'webgrade') {
940: $currentstring .= $token->[4];
941: } elsif ($target eq 'tex') {
942: my $pre;
943: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
944: if ($align eq 'center') {
945: $pre='\begin{center}';
946: } elsif ($align eq 'left') {
947: $pre='\rlap{';
948: } elsif ($align eq 'right') {
949: $pre=' \hfill \llap{';
950: }
951: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
952: if (not defined $TeXsize) {$TeXsize="large";}
953: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
954: }
955: return $currentstring;
956: }
957:
958: sub end_h5 {
959: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
960: my $currentstring = '';
961: if ($target eq 'web' || $target eq 'webgrade') {
962: $currentstring .= $token->[2];
963: } elsif ($target eq 'tex') {
964: my $post='\vskip 0 mm ';
965: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
966: if ($align eq 'center') {
967: $post='\end{center}';
968: } elsif ($align eq 'left') {
969: $post='} \hfill'.'\vskip 0 mm ';
970: } elsif ($align eq 'right') {
971: $post='}'.'\vskip 0 mm ';
972: }
973: $currentstring .= '}}'.$post;
974: }
975: return $currentstring;
976: }
977:
978: #-- <h6> tag
979: sub start_h6 {
980: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
981: my $currentstring = &end_p(); # Close off any prior paras.
982: if ($target eq 'web' || $target eq 'webgrade') {
983: $currentstring .= $token->[4];
984: } elsif ($target eq 'tex') {
985: my $pre;
986: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
987: if ($align eq 'center') {
988: $pre='\begin{center}';
989: } elsif ($align eq 'left') {
990: $pre='\rlap{';
991: } elsif ($align eq 'right') {
992: $pre=' \hfill \llap{';
993: }
994: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
995: if (not defined $TeXsize) {$TeXsize="large";}
996: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
997: }
998: return $currentstring;
999: }
1000:
1001: sub end_h6 {
1002: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web' || $target eq 'webgrade') {
1005: $currentstring .= $token->[2];
1006: } elsif ($target eq 'tex') {
1007: my $post='\vskip 0 mm ';
1008: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1009: if ($align eq 'center') {
1010: $post='\end{center}';
1011: } elsif ($align eq 'left') {
1012: $post='} \hfill'.'\vskip 0 mm ';
1013: } elsif ($align eq 'right') {
1014: $post='}'.'\vskip 0 mm ';
1015: }
1016: $currentstring .= '}}'.$post;
1017: }
1018: return $currentstring;
1019: }
1020:
1021: #--- <cite> tag (end tag required)
1022: sub start_cite {
1023: my ($target,$token) = @_;
1024: my $currentstring = '';
1025: if ($target eq 'web' || $target eq 'webgrade') {
1026: $currentstring .= $token->[4];
1027: } elsif ($target eq 'tex') {
1028: $currentstring .= '\textit{';
1029: }
1030: return $currentstring;
1031: }
1032:
1033: sub end_cite {
1034: my ($target,$token) = @_;
1035: my $currentstring = '';
1036: if ($target eq 'web' || $target eq 'webgrade') {
1037: $currentstring .= $token->[2];
1038: } elsif ($target eq 'tex') {
1039: $currentstring .= '}';
1040: }
1041: return $currentstring;
1042: }
1043:
1044: #-- <i> tag (end tag required)
1045: sub start_i {
1046: my ($target,$token) = @_;
1047: my $currentstring = '';
1048: if ($target eq 'web' || $target eq 'webgrade') {
1049: $currentstring .= $token->[4];
1050: } elsif ($target eq 'tex') {
1051: $currentstring .= '\textit{';
1052: }
1053: return $currentstring;
1054: }
1055:
1056: sub end_i {
1057: my ($target,$token) = @_;
1058: my $currentstring = '';
1059: if ($target eq 'web' || $target eq 'webgrade') {
1060: $currentstring .= $token->[2];
1061: } elsif ($target eq 'tex') {
1062: $currentstring .= '}';
1063: }
1064: return $currentstring;
1065: }
1066:
1067: #-- <address> tag (end tag required)
1068: sub start_address {
1069: my ($target,$token) = @_;
1070: my $currentstring = '';
1071: if ($target eq 'web' || $target eq 'webgrade') {
1072: $currentstring .= $token->[4];
1073: } elsif ($target eq 'tex') {
1074: $currentstring .= '\textit{';
1075: }
1076: return $currentstring;
1077: }
1078:
1079: sub end_address {
1080: my ($target,$token) = @_;
1081: my $currentstring = '';
1082: if ($target eq 'web' || $target eq 'webgrade') {
1083: $currentstring .= $token->[2];
1084: } elsif ($target eq 'tex') {
1085: $currentstring .= '}';
1086: }
1087: return $currentstring;
1088: }
1089:
1090: #-- <dfn> tag (end tag required)
1091: sub start_dfn {
1092: my ($target,$token) = @_;
1093: my $currentstring = '';
1094: if ($target eq 'web' || $target eq 'webgrade') {
1095: $currentstring .= $token->[4];
1096: } elsif ($target eq 'tex') {
1097: $currentstring .= '\textit{';
1098: }
1099: return $currentstring;
1100: }
1101:
1102: sub end_dfn {
1103: my ($target,$token) = @_;
1104: my $currentstring = '';
1105: if ($target eq 'web' || $target eq 'webgrade') {
1106: $currentstring .= $token->[2];
1107: } elsif ($target eq 'tex') {
1108: $currentstring .= '}';
1109: }
1110: return $currentstring;
1111: }
1112:
1113: #-- <tt> tag (end tag required)
1114: sub start_tt {
1115: my ($target,$token) = @_;
1116: my $currentstring = '';
1117: if ($target eq 'web' || $target eq 'webgrade') {
1118: $currentstring .= $token->[4];
1119: } elsif ($target eq 'tex') {
1120: $currentstring .= '\texttt{';
1121: }
1122: return $currentstring;
1123: }
1124:
1125: sub end_tt {
1126: my ($target,$token) = @_;
1127: my $currentstring = '';
1128: if ($target eq 'web' || $target eq 'webgrade') {
1129: $currentstring .= $token->[2];
1130: } elsif ($target eq 'tex') {
1131: $currentstring .= '}';
1132: }
1133: return $currentstring;
1134: }
1135:
1136: #-- <kbd> tag (end tag required)
1137: sub start_kbd {
1138: my ($target,$token) = @_;
1139: my $currentstring = '';
1140: if ($target eq 'web' || $target eq 'webgrade') {
1141: $currentstring .= $token->[4];
1142: } elsif ($target eq 'tex') {
1143: $currentstring .= '\texttt{';
1144: }
1145: return $currentstring;
1146: }
1147:
1148: sub end_kbd {
1149: my ($target,$token) = @_;
1150: my $currentstring = '';
1151: if ($target eq 'web' || $target eq 'webgrade') {
1152: $currentstring .= $token->[2];
1153: } elsif ($target eq 'tex') {
1154: $currentstring .= '}';
1155: }
1156: return $currentstring;
1157: }
1158:
1159: #-- <code> tag (end tag required)
1160: sub start_code {
1161: my ($target,$token) = @_;
1162: my $currentstring = '';
1163: if ($target eq 'web' || $target eq 'webgrade') {
1164: $currentstring .= $token->[4];
1165: } elsif ($target eq 'tex') {
1166: $currentstring .= '\texttt{';
1167: }
1168: return $currentstring;
1169: }
1170:
1171: sub end_code {
1172: my ($target,$token) = @_;
1173: my $currentstring = '';
1174: if ($target eq 'web' || $target eq 'webgrade') {
1175: $currentstring .= $token->[2];
1176: } elsif ($target eq 'tex') {
1177: $currentstring .= '}';
1178: }
1179: return $currentstring;
1180: }
1181:
1182: #-- <em> tag (end tag required)
1183: sub start_em {
1184: my ($target,$token) = @_;
1185: my $currentstring = '';
1186: if ($target eq 'web' || $target eq 'webgrade') {
1187: $currentstring .= $token->[4];
1188: } elsif ($target eq 'tex') {
1189: $currentstring .= '\emph{';
1190: }
1191: return $currentstring;
1192: }
1193:
1194: sub end_em {
1195: my ($target,$token) = @_;
1196: my $currentstring = '';
1197: if ($target eq 'web' || $target eq 'webgrade') {
1198: $currentstring .= $token->[2];
1199: } elsif ($target eq 'tex') {
1200: $currentstring .= '}';
1201: }
1202: return $currentstring;
1203: }
1204:
1205: #-- <q> tag (end tag required)
1206: sub start_q {
1207: my ($target,$token) = @_;
1208: my $currentstring = '';
1209: if ($target eq 'web' || $target eq 'webgrade') {
1210: $currentstring .= $token->[4];
1211: } elsif ($target eq 'tex') {
1212: $currentstring .= '\emph{';
1213: }
1214: return $currentstring;
1215: }
1216:
1217: sub end_q {
1218: my ($target,$token) = @_;
1219: my $currentstring = '';
1220: if ($target eq 'web' || $target eq 'webgrade') {
1221: $currentstring .= $token->[2];
1222: } elsif ($target eq 'tex') {
1223: $currentstring .= '}';
1224: }
1225: return $currentstring;
1226: }
1227:
1228: # <p> is a bit strange since it does not require a closing </p>
1229: # However in latex, we must often output closing stuff to end
1230: # environments and {}'s etc. Therefore we do all the work
1231: # of figuring out the ending strings in the start tag processing,
1232: # and provide a mechanism to output the stop text external
1233: # to tag processing.
1234: #
1235: {
1236:
1237: my $closing_string = ''; # String required to close <p>
1238:
1239: # Some tags are <p> fragile meaning that <p> inside of them
1240: # does not work within TeX mode. This is managed via the
1241: # counter below:
1242: #
1243:
1244: my $para_disabled = 0;
1245:
1246: sub disable_para {
1247: $para_disabled++;
1248: }
1249: sub enable_para {
1250: $para_disabled--;
1251: }
1252:
1253:
1254: #-- <p> tag (end tag optional)
1255: #optional attribute - align="center|left|right"
1256: sub start_p {
1257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1258: my $currentstring = '';
1259: if ($target eq 'web' || $target eq 'webgrade') {
1260: $currentstring .= &end_p(); # close off prior para if in progress.
1261: $currentstring .= $token->[4];
1262: if (! ($currentstring =~ /\//)) {
1263: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1264: }
1265: } elsif ($target eq 'tex' && !$para_disabled) {
1266:
1267: $currentstring .= &end_p(); # close off prior para if in progress.
1268: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1269: if ($align eq 'center') {
1270: $currentstring .='\begin{center}\par ';
1271: $closing_string = '\end{center}';
1272: if (&is_inside_of($tagstack, "table")) {
1273: $currentstring = ¢er_correction().$currentstring;
1274: }
1275: } elsif ($align eq 'right') {
1276: $currentstring.="\n".'{\flushright ';
1277: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1278: $closing_string= "}\n";
1279: } elsif ($align eq 'left') {
1280: $currentstring.= "\n".'{\flushleft ';
1281: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1282: $closing_string = "}\n";
1283: } else {
1284: $currentstring.='\par ';
1285: if (&is_inside_of($tagstack, 'table')) {
1286: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1287: } else {
1288: $closing_string = '\strut\\\\\strut ';
1289: }
1290: }
1291:
1292: }
1293: return $currentstring;
1294: }
1295: #
1296: # End paragraph processing just requires that we output the
1297: # closing string that was saved and blank it.
1298: sub end_p {
1299: # Note only 'tex' mode uses disable_para and enable_para
1300: # so we don't need to know the target in the check below:
1301:
1302: if (!$para_disabled) {
1303: my $current_string = $closing_string;
1304: $closing_string = ''; # Not in a para anymore.
1305: return $current_string;
1306: } else {
1307: return '';
1308: }
1309:
1310: }
1311: }
1312: #-- <br> tag (end tag forbidden)
1313: sub start_br {
1314: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1315: my $currentstring = '';
1316: if ($target eq 'web' || $target eq 'webgrade') {
1317: $currentstring .= $token->[4];
1318: } elsif ($target eq 'tex') {
1319: my @tempo=@$tagstack;
1320: my $signal=0;
1321: # Not going to factor this to is_inside_of since that would require
1322: # multiple stack traversals.
1323: #
1324: for (my $i=$#tempo;$i>=0;$i--) {
1325: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1326: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1327: $signal=1;
1328: }
1329: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1330: $signal = 1;
1331: }
1332: }
1333: if ($signal != 1) {
1334: $currentstring .= '\strut \\\\ \strut ';
1335: }
1336:
1337: }
1338: return $currentstring;
1339: }
1340:
1341: sub end_br {
1342: my ($target,$token) = @_;
1343: my $currentstring = '';
1344: if ($target eq 'web' || $target eq 'webgrade') {
1345: $currentstring .= $token->[2];
1346: }
1347: return $currentstring;
1348: }
1349:
1350: #-- <big> tag (end tag required)
1351: sub start_big {
1352: my ($target,$token) = @_;
1353: my $currentstring = '';
1354: if ($target eq 'web' || $target eq 'webgrade') {
1355: $currentstring .= $token->[4];
1356: } elsif ($target eq 'tex') {
1357: $currentstring .= '{\large ';
1358: }
1359: return $currentstring;
1360: }
1361:
1362: sub end_big {
1363: my ($target,$token) = @_;
1364: my $currentstring = '';
1365: if ($target eq 'web' || $target eq 'webgrade') {
1366: $currentstring .= $token->[2];
1367: } elsif ($target eq 'tex') {
1368: $currentstring .= '}';
1369: }
1370: return $currentstring;
1371: }
1372:
1373: #-- <small> tag (end tag required)
1374: sub start_small {
1375: my ($target,$token) = @_;
1376: my $currentstring = '';
1377: if ($target eq 'web' || $target eq 'webgrade') {
1378: $currentstring .= $token->[4];
1379: } elsif ($target eq 'tex') {
1380: $currentstring .= '{\footnotesize ';
1381: }
1382: return $currentstring;
1383: }
1384:
1385: sub end_small {
1386: my ($target,$token) = @_;
1387: my $currentstring = '';
1388: if ($target eq 'web' || $target eq 'webgrade') {
1389: $currentstring .= $token->[2];
1390: } elsif ($target eq 'tex') {
1391: $currentstring .= '}';
1392: }
1393: return $currentstring;
1394: }
1395:
1396: #-- <basefont> tag (end tag forbidden)
1397: sub start_basefont {
1398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1399: my $currentstring = '';
1400: if ($target eq 'web' || $target eq 'webgrade') {
1401: $currentstring = $token->[4];
1402: } elsif ($target eq 'tex') {
1403: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1404: if (defined $basesize) {
1405: $currentstring = '{\\'.$basesize.' ';
1406: }
1407: }
1408: return $currentstring;
1409: }
1410:
1411: sub end_basefont {
1412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1413: my $currentstring = '';
1414: if ($target eq 'web' || $target eq 'webgrade') {
1415: $currentstring = $token->[4];
1416: } elsif ($target eq 'tex') {
1417: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1418: if (defined $basesize) {
1419: $currentstring = '}';
1420: }
1421: }
1422: return $currentstring;
1423: }
1424:
1425: #-- <font> tag (end tag required)
1426: sub start_font {
1427: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1428: my $currentstring = '';
1429: if ($target eq 'web' || $target eq 'webgrade') {
1430: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1431: $currentstring = $token->[4];
1432: } elsif ($target eq 'tex') {
1433: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1434: if (defined $fontsize) {
1435: $currentstring = '{\\'.$fontsize.' ';
1436: }
1437: }
1438: return $currentstring;
1439: }
1440:
1441: sub end_font {
1442: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1443: my $currentstring = '';
1444: if ($target eq 'web' || $target eq 'webgrade') {
1445: $currentstring = $token->[2];
1446: } elsif ($target eq 'tex') {
1447: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1448: if (defined $fontsize) {
1449: $currentstring = '}';
1450: }
1451: }
1452: return $currentstring;
1453: }
1454:
1455: #-- <strike> tag (end tag required)
1456: sub start_strike {
1457: my ($target,$token) = @_;
1458: my $currentstring = '';
1459: if ($target eq 'web' || $target eq 'webgrade') {
1460: $currentstring .= $token->[4];
1461: } elsif ($target eq 'tex') {
1462: &Apache::lonxml::startredirection();
1463: }
1464: return $currentstring;
1465: }
1466:
1467: sub end_strike {
1468: my ($target,$token) = @_;
1469: my $currentstring = '';
1470: if ($target eq 'web' || $target eq 'webgrade') {
1471: $currentstring .= $token->[2];
1472: } elsif ($target eq 'tex') {
1473: $currentstring=&Apache::lonxml::endredirection();
1474: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1475: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1476: $currentstring=~s/(\S)\s*$/$1\}/;
1477: }
1478: return $currentstring;
1479: }
1480:
1481: #-- <s> tag (end tag required)
1482: sub start_s {
1483: my ($target,$token) = @_;
1484: my $currentstring = '';
1485: if ($target eq 'web' || $target eq 'webgrade') {
1486: $currentstring .= $token->[4];
1487: } elsif ($target eq 'tex') {
1488: &Apache::lonxml::startredirection();
1489: }
1490: return $currentstring;
1491: }
1492:
1493: sub end_s {
1494: my ($target,$token) = @_;
1495: my $currentstring = '';
1496: if ($target eq 'web' || $target eq 'webgrade') {
1497: $currentstring .= $token->[2];
1498: } elsif ($target eq 'tex') {
1499: $currentstring=&Apache::lonxml::endredirection();
1500: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1501: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1502: $currentstring=~s/(\S)\s*$/$1\}/;
1503: }
1504: return $currentstring;
1505: }
1506:
1507: #-- <sub> tag (end tag required)
1508: sub start_sub {
1509: my ($target,$token) = @_;
1510: my $currentstring = '';
1511: if ($target eq 'web' || $target eq 'webgrade') {
1512: $currentstring .= $token->[4];
1513: } elsif ($target eq 'tex') {
1514: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1515: }
1516: return $currentstring;
1517: }
1518:
1519: sub end_sub {
1520: my ($target,$token) = @_;
1521: my $currentstring = '';
1522: if ($target eq 'web' || $target eq 'webgrade') {
1523: $currentstring .= $token->[2];
1524: } elsif ($target eq 'tex') {
1525: $currentstring .= '}}';
1526: }
1527: return $currentstring;
1528: }
1529:
1530: #-- <sup> tag (end tag required)
1531: sub start_sup {
1532: my ($target,$token) = @_;
1533: my $currentstring = '';
1534: if ($target eq 'web' || $target eq 'webgrade') {
1535: $currentstring .= $token->[4];
1536: } elsif ($target eq 'tex') {
1537: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1538: }
1539: return $currentstring;
1540: }
1541:
1542: sub end_sup {
1543: my ($target,$token) = @_;
1544: my $currentstring = '';
1545: if ($target eq 'web' || $target eq 'webgrade') {
1546: $currentstring .= $token->[2];
1547: } elsif ($target eq 'tex') {
1548: $currentstring .= '}}';
1549: }
1550: return $currentstring;
1551: }
1552:
1553: #-- <hr> tag (end tag forbidden)
1554: sub start_hr {
1555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1556: my $currentstring = &end_p(); # End enclosing para.
1557: if ($target eq 'web' || $target eq 'webgrade') {
1558: $currentstring .= $token->[4];
1559: } elsif ($target eq 'tex') {
1560:
1561: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1562: #
1563: my $restart_sub = 0;
1564: my $restart_sup = 0;
1565:
1566: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1567: # using the start_ stop_ functions.. those tags only care about
1568: # $target.
1569:
1570: if (&is_inside_of($tagstack, "sub")) {
1571: $restart_sub = 1;
1572: $currentstring .= &end_sub($target, $token, $tagstack,
1573: $parstack, $parser, $safeeval);
1574: }
1575: if (&is_inside_of($tagstack, "sup")) {
1576: $restart_sup = 1;
1577: $currentstring .= &end_sup($target, $token, $tagstack,
1578: $parstack, $parser, $safeeval);
1579: }
1580:
1581: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1582: if (defined $LaTeXwidth) {
1583: if ($LaTeXwidth=~/^%/) {
1584: substr($LaTeXwidth,0,1)='';
1585: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1586: }
1587: } else {
1588: $LaTeXwidth ='0.9\textwidth';
1589: }
1590: my ($pre,$post);
1591: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1592: if (($align eq 'center') || (not defined $align)) {
1593: $pre=''; $post='';
1594: } elsif ($align eq 'left') {
1595: $pre='\rlap{'; $post='} \hfill';
1596: } elsif ($align eq 'right') {
1597: $pre=' \hfill \llap{'; $post='}';
1598: }
1599: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1600: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1601: # Turn stuff back on that we can't be inside of.
1602:
1603: if ($restart_sub) {
1604: $currentstring .= &start_sub($target, $token, $tagstack,
1605: $parstack, $parser, $safeeval);
1606: }
1607: if ($restart_sup) {
1608: $currentstring .= &start_sup($target, $token, $tagstack,
1609: $parstack, $parser, $safeeval);
1610: }
1611: }
1612: return $currentstring;
1613: }
1614:
1615: sub end_hr {
1616: my ($target,$token) = @_;
1617: my $currentstring = '';
1618: if ($target eq 'web' || $target eq 'webgrade') {
1619: $currentstring .= $token->[2];
1620: }
1621: return $currentstring;
1622: }
1623:
1624: #-- <div> tag (end tag required)
1625: {
1626:
1627: # Since div can be nested, the stack below is used
1628: # in 'tex' mode to store the ending strings
1629: # for the div stack.
1630:
1631: my @div_end_stack;
1632:
1633: sub start_div {
1634: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1635: my $currentstring = &end_p(); # Close enclosing para.
1636: if ($target eq 'web' || $target eq 'webgrade') {
1637: $currentstring .= $token->[4];
1638: }
1639: if ($target eq 'tex') {
1640: # 4 possible alignments: left, right, center, and -missing-.
1641: # If inside a table row, we must let the table logic
1642: # do the alignment, however.
1643: #
1644:
1645: my $endstring = '';
1646:
1647: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1648: $safeeval, undef, 1));
1649: if ($align eq 'center') {
1650: $currentstring .= '\begin{center}';
1651: $endstring = '\end{center}';
1652: if (&is_inside_of($tagstack, "table")) {
1653: $currentstring = ¢er_correction().$currentstring;
1654: $endstring .= ¢er_end_correction();
1655: }
1656: }
1657: elsif ($align eq 'right') {
1658: $currentstring .= '\begin{flushright}';
1659: $endstring .= '\end{flushright}';
1660: } elsif ($align eq 'left') {
1661: $currentstring .= '\begin{flushleft}';
1662: $endstring = '\end{flushleft}';
1663: } else {
1664:
1665: }
1666: $currentstring .= "\n"; # For human readability.
1667: $endstring = "\n$endstring\n"; # For human readability
1668: push(@div_end_stack, $endstring);
1669: }
1670: return $currentstring;
1671: }
1672:
1673: sub end_div {
1674: my ($target,$token) = @_;
1675: my $currentstring = '';
1676: if ($target eq 'web' || $target eq 'webgrade') {
1677: $currentstring .= $token->[2];
1678: }
1679: if ($target eq 'tex') {
1680: my $endstring = pop @div_end_stack;
1681: $currentstring .= $endstring;
1682: }
1683: return $currentstring;
1684: }
1685: }
1686:
1687: #-- <a> tag (end tag required)
1688: sub start_a {
1689: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1690: my $currentstring = '';
1691: if ($target eq 'web' || $target eq 'webgrade') {
1692: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1693: undef,1);
1694: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1695: if ($href =~ /\S/) {
1696: if ($href !~ m{^https?://}) {
1697: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1698: my $linkurl;
1699: if ($href =~ m{^/uploaded/}) {
1700: $linkurl = $href;
1701: } elsif ($href =~ m{^[^/]}) {
1702: my $path = $url;
1703: $path =~ s{[^/]*$}{};
1704: $linkurl = $path.$href;
1705: }
1706: if ($linkurl =~ m{^/uploaded/}) {
1707: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1708: if (&Apache::lonnet::is_on_map($url)) {
1709: &Apache::lonxml::extlink($linkurl);
1710: }
1711: }
1712: }
1713: }
1714: }
1715: }
1716: return $currentstring;
1717: }
1718:
1719: sub end_a {
1720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web' || $target eq 'webgrade') {
1723: $currentstring .= $token->[2];
1724: }
1725: if ($target eq 'tex') {
1726: my $href =
1727: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1728: my $name =
1729: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1730: my $uriprint =
1731: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1732: my $anchorprint =
1733: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1734: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1735: $href =~ s/([^\\])%/$1\\\%/g;
1736: # Substitute special symbols... and allow line breaks at each /
1737: #
1738: $href = &Apache::lonxml::latex_special_symbols($href);
1739: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1740: $currentstring .= ' ({\tt URI:'.$href.'})';
1741: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1742: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1743: } else {
1744: $currentstring.='';
1745: }
1746: }
1747: return $currentstring;
1748: }
1749:
1750: #-- <li> tag (end tag optional)
1751: sub start_li {
1752: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1753: my $currentstring = '';
1754: if ($target eq 'web' || $target eq 'webgrade') {
1755: $currentstring = $token->[4];
1756: } elsif ($target eq 'tex') {
1757: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1758: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1759: #FIXME need to support types i and I
1760: if ($type=~/disc/) {
1761: $currentstring .= ' \item[$\bullet$] ';
1762: } elsif ($type=~/circle/) {
1763: $currentstring .= ' \item[$\circ$] ';
1764: } elsif ($type=~/square/) {
1765: $currentstring .= ' \item[$\diamond$] ';
1766: } elsif ($type eq '1') {
1767: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1768: } elsif ($type eq 'A') {
1769: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1770: } elsif ($type eq 'a') {
1771: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1772: } elsif ($value ne '') {
1773: $currentstring .= ' \item['.$value.'] ';
1774: } else {
1775: $currentstring .= ' \item ';
1776: }
1777: $Apache::londefdef::list_index++;
1778: }
1779: return $currentstring;
1780: }
1781:
1782: sub end_li {
1783: my ($target,$token) = @_;
1784: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1785: if ($target eq 'web' || $target eq 'webgrade') {
1786: $currentstring .= $token->[2];
1787: }
1788: return $currentstring;
1789: }
1790:
1791: #-- <u> tag (end tag required)
1792: sub start_u {
1793: my ($target,$token) = @_;
1794: my $currentstring = '';
1795: if ($target eq 'web' || $target eq 'webgrade') {
1796: $currentstring .= $token->[4];
1797: } elsif ($target eq 'tex') {
1798: &Apache::lonxml::startredirection();
1799: }
1800: return $currentstring;
1801: }
1802:
1803: sub end_u {
1804: my ($target,$token) = @_;
1805: my $currentstring = '';
1806: if ($target eq 'web' || $target eq 'webgrade') {
1807: $currentstring .= $token->[2];
1808: } elsif ($target eq 'tex') {
1809: $currentstring=&Apache::lonxml::endredirection();
1810: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1811: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1812: $currentstring=~s/(\S)\s*$/$1\}/;
1813: }
1814: return $currentstring;
1815: }
1816:
1817: #-- <ul> tag (end tag required)
1818: sub start_ul {
1819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1820: my $currentstring = &end_p(); # Close off enclosing list.
1821: if ($target eq 'web' || $target eq 'webgrade') {
1822: $currentstring .= $token->[4];
1823: } elsif ($target eq 'tex') {
1824: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1825: $Apache::londefdef::list_index=0;
1826: if ($TeXtype eq 'disc') {
1827: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1828: '\renewcommand{\labelitemii}{$\bullet$}'.
1829: '\renewcommand{\labelitemiii}{$\bullet$}'.
1830: '\renewcommand{\labelitemiv}{$\bullet$}';
1831: } elsif ($TeXtype eq 'circle') {
1832: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1833: '\renewcommand{\labelitemii}{$\circ$}'.
1834: '\renewcommand{\labelitemiii}{$\circ$}'.
1835: '\renewcommand{\labelitemiv}{$\circ$}';
1836: } elsif ($TeXtype eq 'square') {
1837: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1838: '\renewcommand{\labelitemii}{$\diamond$}'.
1839: '\renewcommand{\labelitemiii}{$\diamond$}'.
1840: '\renewcommand{\labelitemiv}{$\diamond$}';
1841: }
1842: $currentstring .= '\strut \begin{itemize}';
1843: }
1844: return $currentstring;
1845: }
1846:
1847: sub end_ul {
1848: my ($target,$token) = @_;
1849: my $currentstring = '';
1850: if ($target eq 'web' || $target eq 'webgrade') {
1851: $currentstring = $token->[2];
1852: } elsif ($target eq 'tex') {
1853: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1854: '\renewcommand{\labelitemii}{$\bullet$}'.
1855: '\renewcommand{\labelitemiii}{$\bullet$}'.
1856: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1857: }
1858: return $currentstring;
1859: }
1860:
1861: #-- <menu> tag (end tag required)
1862: sub start_menu {
1863: my ($target,$token) = @_;
1864: my $currentstring = '';
1865: if ($target eq 'web' || $target eq 'webgrade') {
1866: $currentstring = $token->[4];
1867: } elsif ($target eq 'tex') {
1868: $currentstring = " \\begin{itemize} ";
1869: }
1870: return $currentstring;
1871: }
1872:
1873: sub end_menu {
1874: my ($target,$token) = @_;
1875: my $currentstring = '';
1876: if ($target eq 'web' || $target eq 'webgrade') {
1877: $currentstring = $token->[2];
1878: } elsif ($target eq 'tex') {
1879: $currentstring = " \\end{itemize}";
1880: }
1881: return $currentstring;
1882: }
1883:
1884: #-- <dir> tag (end tag required)
1885: sub start_dir {
1886: my ($target,$token) = @_;
1887: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1888: if ($target eq 'web' || $target eq 'webgrade') {
1889: $currentstring .= $token->[4];
1890: } elsif ($target eq 'tex') {
1891: $currentstring .= " \\begin{itemize} ";
1892: }
1893: return $currentstring;
1894: }
1895:
1896: sub end_dir {
1897: my ($target,$token) = @_;
1898: my $currentstring = '';
1899: if ($target eq 'web' || $target eq 'webgrade') {
1900: $currentstring = $token->[2];
1901: } elsif ($target eq 'tex') {
1902: $currentstring = " \\end{itemize}";
1903: }
1904: return $currentstring;
1905: }
1906:
1907: #-- <ol> tag (end tag required)
1908: sub start_ol {
1909: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1910: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1911: if ($target eq 'web' || $target eq 'webgrade') {
1912: $currentstring .= $token->[4];
1913: } elsif ($target eq 'tex') {
1914: $Apache::londefdef::list_index=0;
1915: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1916: if ($type eq '1') {
1917: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1918: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1919: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1920: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1921: } elsif ($type eq 'A') {
1922: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1923: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1924: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1925: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1926: } elsif ($type eq 'a') {
1927: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1928: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1929: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1930: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1931: } elsif ($type eq 'i') {
1932: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1933: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1934: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1935: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1936: } elsif ($type eq 'I') {
1937: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1938: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1939: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1940: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1941: }
1942: $currentstring .= '\strut \begin{enumerate}';
1943: }
1944: return $currentstring;
1945: }
1946:
1947: sub end_ol {
1948: my ($target,$token) = @_;
1949: my $currentstring = '';
1950: if ($target eq 'web' || $target eq 'webgrade') {
1951: $currentstring = $token->[2];
1952: } elsif ($target eq 'tex') {
1953: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1954: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1955: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1956: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1957: }
1958: return $currentstring;
1959: }
1960:
1961: #-- <dl> tag (end tag required)
1962: sub start_dl {
1963: my ($target,$token) = @_;
1964: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1965: if ($target eq 'web' || $target eq 'webgrade') {
1966: $currentstring .= $token->[4];
1967: } elsif ($target eq 'tex') {
1968: $currentstring .= '\begin{description}';
1969: $Apache::londefdef::DL++;
1970: push(@Apache::londefdef::description,[]);
1971: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1972: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1973: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1974: }
1975: return $currentstring;
1976: }
1977:
1978: sub end_dl {
1979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1980: my $currentstring = '';
1981: if ($target eq 'web' || $target eq 'webgrade') {
1982: $currentstring = $token->[2];
1983: } elsif ($target eq 'tex') {
1984: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1985: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1986: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1987: $currentstring.=' '.$element.' ';
1988: }
1989: pop(@Apache::londefdef::description);
1990: $currentstring.='\end{description}';
1991: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1992: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1993: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1994: $Apache::londefdef::DL--;
1995: }
1996: return $currentstring;
1997: }
1998:
1999: #-- <dt> tag (end tag optional)
2000: sub start_dt {
2001: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2002: my $currentstring='';
2003: if ($target eq 'web' || $target eq 'webgrade') {
2004: $currentstring = $token->[4];
2005: } elsif ($target eq 'tex') {
2006: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2007: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2008: &Apache::lonxml::startredirection();
2009: $Apache::londefdef::DT[-1]++;
2010: $Apache::londefdef::seenDT[-1]=1;
2011: }
2012: return $currentstring;
2013: }
2014:
2015: sub end_dt {
2016: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2017: my $currentstring = '';
2018: if ($target eq 'web' || $target eq 'webgrade') {
2019: $currentstring = $token->[2];
2020: } elsif ($target eq 'tex') {
2021: if ($Apache::londefdef::DT[-1]) {
2022: my $data=&item_cleanup();
2023: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2024: $Apache::londefdef::DT[-1]--;
2025: }
2026: }
2027: return $currentstring;
2028: }
2029:
2030: sub item_cleanup {
2031: my $item=&Apache::lonxml::endredirection();
2032: $item=~s/\\begin{center}//g;
2033: $item=~s/\\end{center}//g;
2034: return $item;
2035: }
2036:
2037: #-- <dd> tag (end tag optional)
2038: sub start_dd {
2039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2040: my $currentstring = '';
2041: if ($target eq 'web' || $target eq 'webgrade') {
2042: $currentstring = $token->[4];
2043: } elsif ($target eq 'tex') {
2044: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2045: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2046: if (!$Apache::londefdef::seenDT[-1]) {
2047: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2048: }
2049: push(@{$Apache::londefdef::description[-1]},'');
2050: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2051: $Apache::londefdef::DD[-1]++;
2052: &Apache::lonxml::startredirection();
2053: }
2054: return $currentstring;
2055: }
2056:
2057: sub end_dd {
2058: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2059: my $currentstring = '';
2060: if ($target eq 'web' || $target eq 'webgrade') {
2061: $currentstring = $token->[2];
2062: } elsif ($target eq 'tex') {
2063: $Apache::londefdef::description[-1]->[-1].=
2064: &Apache::lonxml::endredirection().' \vskip 0mm ';
2065: $Apache::londefdef::DD[-1]--;
2066: }
2067: return $currentstring;
2068: }
2069:
2070: #-- <table> tag (end tag required)
2071: # <table> also ends any prior <p> that is not closed.
2072: # but, unless I allow <p>'s to nest, that's the
2073: # only way I could think of to allow <p> in
2074: # <tr> <th> bodies
2075: #
2076: #list of supported attributes: border,width,TeXwidth,TeXtheme
2077: # align
2078: sub start_table {
2079: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2080: my $textwidth = '';
2081: my $currentstring = &end_p();
2082: if ($target eq 'web' || $target eq 'webgrade') {
2083: $currentstring .= $token->[4];
2084: } elsif ($target eq 'tex') {
2085: &disable_para(); # Can't have paras in a table.
2086:
2087: # Get the parameters that we can do something about:
2088:
2089: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2090: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2091: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2092: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2093: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2094:
2095: # The only thing that needs any figuring out is the width.. and then only if it is
2096: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2097: #
2098:
2099: my $table = new Apache::lontable();
2100: if ((defined $border) && ($border > 0)) {
2101: # &Apache::lonnet::logthis("Turning on table borders: $border");
2102: $table->table_border(1);
2103: if (!defined $cell_border) {
2104: $table->cell_border(1); # Default for rules is all if rules not defined.
2105: }
2106: }
2107:
2108: if ((defined $cell_border)) {
2109: if ($cell_border eq 'all') {
2110: $table->cell_border(1);
2111: } elsif ($cell_border eq 'rows') {
2112: $table->cell_border(2);
2113: } elsif ($cell_border eq 'cols') {
2114: $table->cell_border(3);
2115: } elsif($cell_border eq 'groups') {
2116: $table->cell_border(4);
2117: } else {
2118: $table->cell_border(0);
2119: }
2120: }
2121: if (defined $theme) {
2122: $table->theme($theme);
2123: }
2124: if (defined $align) {
2125: $table->alignment($align);
2126: }
2127:
2128: # Missing width is most of page width
2129:
2130: if (!(defined $width)) {
2131: $width = '70%';
2132: }
2133:
2134: # If a percentage, need to calculate what this means in terms of
2135: # page width:
2136:
2137: if ($width =~ /%$/) {
2138: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2139: $width =~ s/%//;
2140: $width = $width * $textwidth / 100.0;
2141: $width .= " mm";
2142: $table->width($width);
2143: }
2144:
2145: push(@Apache::londefdef::table, $table);
2146: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2147:
2148: }
2149: return $currentstring;
2150: }
2151:
2152: sub end_table {
2153: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2154: my $currentstring = '';
2155: if ($target eq 'web' || $target eq 'webgrade') {
2156: $currentstring = $token->[2];
2157: } elsif ($target eq 'tex') {
2158:
2159:
2160: my $table = pop(@Apache::londefdef::table);
2161: my $t = $table->generate();
2162: # &Apache::lonnet::logthis("Generating string");
2163: $currentstring = $t->generate_string();
2164: # &Apache::lonnet::logthis("Generated: $currentstring");
2165: &enable_para();
2166:
2167: }
2168: return $currentstring;
2169: }
2170:
2171: #-- <tr> tag (end tag optional)
2172: sub start_tr {
2173: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2174: my $currentstring = '';
2175: if ($target eq 'web' || $target eq 'webgrade') {
2176: $currentstring = $token->[4];
2177: } elsif ($target eq 'tex') {
2178:
2179: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2180: $Apache::londefdef::table[-1]->start_row();
2181:
2182: if ($align ne '') {
2183: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2184: }
2185:
2186: #---------------------------------------------------------------
2187: # Old table code.
2188: #---------------------------------------------------------------
2189:
2190: if (0) {
2191: $Apache::londefdef::table[-1]{'row_number'}++;
2192: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2193: if ($alignchar ne '') {
2194: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2195: } else {
2196: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2197: }
2198: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2199: #
2200: # Need to save the number of table columns to preserve the max # columns.
2201: #
2202: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2203: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2204: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2205: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2206: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2207: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2208: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2209: }
2210: }
2211: return $currentstring;
2212: }
2213:
2214: sub end_tr {
2215: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2216: my $currentstring = &end_p(); # Close any pending <p> in the row.
2217: if ($target eq 'web' || $target eq 'webgrade') {
2218: $currentstring .= $token->[2];
2219: } elsif ($target eq 'tex') {
2220:
2221: # In case the user is missing a </td> or </th> tag:
2222:
2223: if ($Apache::londefdef::TD_redirection) {
2224: &end_td_tex($parstack,$parser,$safeeval);
2225: }
2226: $Apache::londefdef::table[-1]->end_row();
2227:
2228: #-----------------------------------------------
2229: # Old table code
2230: #-----------------------------------------------
2231:
2232: if (0) {
2233: if ($Apache::londefdef::TD_redirection) {
2234: &end_td_tex($parstack,$parser,$safeeval);
2235: }
2236: # Counter columns must be the maximum number of columns seen
2237: # in the table so far so:
2238: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2239: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2240: }
2241: }
2242:
2243:
2244: }
2245: return $currentstring;
2246: }
2247:
2248: #-- <td> tag (end tag optional)
2249: sub start_td {
2250: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2251: my $currentstring = '';
2252: if ($target eq 'web' || $target eq 'webgrade') {
2253: $currentstring = $token->[4];
2254: } elsif ($target eq 'tex') {
2255: $Apache::londefdef::TD_redirection = 1;
2256: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2257: }
2258: return $currentstring;
2259: }
2260:
2261: sub tag_check {
2262: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2263: my @ar=@$parstack;
2264: for (my $i=$#ar-1;$i>=0;$i--) {
2265: if (lc($$tagstack[$i]) eq $good_tag) {
2266: &start_td_tex($parstack,$parser,$safeeval);
2267: last;
2268: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2269: splice @ar, $i+1;
2270: &end_td_tex(\@ar,$parser,$safeeval);
2271: &start_td_tex($parstack,$parser,$safeeval);
2272: last;
2273: }
2274: }
2275: return '';
2276: }
2277:
2278: #
2279: # Factor out cell configuration hash generation:
2280: #
2281:
2282: sub cell_config_hash {
2283: my ($align, $rowspan, $colspan, $width) = @_;
2284: if ($rowspan ne '') {
2285: $rowspan =~ s/^\s+|\s+$//g;
2286: }
2287: if ($colspan ne '') {
2288: $colspan =~ s/^\s+|\s+$//g;
2289: }
2290: my %config;
2291: if ($align ne '') {
2292: $config{'halign'} = $align;
2293: }
2294: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2295: $config{'colspan'} = $colspan;
2296: }
2297: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2298: $config{'rowspan'} = $rowspan;
2299: }
2300: if ($width ne '') {
2301: $config{'width'} = $width;
2302: }
2303: return \%config;
2304: }
2305:
2306: sub start_td_tex {
2307: my ($parstack,$parser,$safeeval) = @_;
2308:
2309: # At this stage, an empty cell is created with the
2310: # appropriate rowspan/colspan and alignment
2311: # attributes, but empty of text. end_td_tex will
2312: # fetch the contents from the recursive parse and
2313: # fill the cell with them:
2314: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2315: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2316: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2317: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2318: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2319:
2320: my $table = $Apache::londefdef::table[-1];
2321: $table->add_cell('', $config);
2322:
2323:
2324: #------------------------------------------------
2325: # Old table code.
2326: #------------------------------------------------
2327:
2328: if (0) {
2329:
2330: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2331: if ($alignchar eq '') {
2332: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2333: }
2334: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2335: $Apache::londefdef::table[-1]{'counter_columns'}++;
2336: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2337: if (defined $TeXwidth) {
2338: my $current_length=&recalc($TeXwidth);
2339: $current_length=~/(\d+\.?\d*)/;
2340: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2341: }
2342: }
2343: &Apache::lonxml::startredirection();
2344: return '';
2345: }
2346:
2347: sub end_td_tex {
2348:
2349: my $text = &Apache::lonxml::endredirection();
2350: my $table = $Apache::londefdef::table[-1];
2351: $table->append_cell_text($text);
2352:
2353: #-------------------------------------------------
2354: # Old table code
2355: #-------------------------------------------------
2356:
2357: if (0) {
2358: my ($parstack,$parser,$safeeval) = @_;
2359: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2360: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2361: my $data = &Apache::lonxml::endredirection();
2362:
2363: # The rowspan array of the table indicates which cells are part of a span.
2364: # n indicates the start of a span set of n rows.
2365: # ^ indicates a cell that continues a span set.
2366: # _ indicates the cell is at the bottom of a span set.
2367: # If this and subsequent cells are part of a rowspan, we must
2368: # push along the row until we find one that is not.
2369:
2370: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2371: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2372: # Part of a span.
2373: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2374: $current_column++;
2375: }
2376: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2377:
2378:
2379: # Get the column and row spans.
2380: # Colspan can be done via \multicolumn if I can figure out the data structs.
2381:
2382: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2383: if (!$colspan) {
2384: $colspan = 1;
2385: }
2386:
2387: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2388: if (!$rowspan) {
2389: $rowspan = 1;
2390: }
2391:
2392:
2393:
2394: for (my $c = 0; $c < $colspan; $c++) {
2395: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2396: for (my $i = 1; $i < $rowspan; $i++) {
2397: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2398: if ($i == ($rowspan-1)) {
2399: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2400: }
2401: }
2402: }
2403:
2404: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2405: if (defined $TeXwidth) {
2406: for (my $c = 0; $c < $colspan; $c++) {
2407: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2408: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2409: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2410: }
2411: } else {
2412: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2413: my $garbage_data=$data;
2414: my $fwidth=0;
2415: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2416: my $current_length=&recalc($1);
2417: $current_length=~/(\d+\.?\d*)/;
2418: if ($fwidth<$1) {$fwidth=$1;}
2419: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2420: }
2421: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2422: my $current_length=$1;
2423: if ($fwidth<$current_length) {$fwidth=$current_length;}
2424: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2425: }
2426: for (my $c = 0; $c < $colspan; $c++) {
2427: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2428: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2429: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2430: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2431: }
2432: } 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)*/) {
2433: my $garbage_data=$data;
2434: my $fwidth=0;
2435: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2436: my $current_length=&recalc($1);
2437: $current_length=~/(\d+\.?\d*)/;
2438: if ($fwidth<$1) {$fwidth=$1;}
2439: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2440: }
2441: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2442: my $current_length=&recalc($1);
2443: $current_length=~/(\d+\.?\d*)/;
2444: if ($fwidth<$1) {$fwidth=$1;}
2445: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2446: }
2447: for (my $c = 0; $c < $colspan; $c++) {
2448: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2449: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2450: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2451: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2452: }
2453: $data=~s/\\\\\s*$//;
2454: } else {
2455: $data=~s/^\s+(\S.*)/$1/;
2456: $data=~s/(.*\S)\s+$/$1/;
2457: $data=~s/(\s)+/$1/;
2458: my ($current_length,$min_length)=(0,0);
2459: if ($data=~/\\vskip/) {
2460: my $newdata=$data;
2461: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2462: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2463: foreach my $elementdata (@newdata) {
2464: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2465: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2466: my @words=split(/ /,$elementdata);
2467: foreach my $word (@words) {
2468: my $lengthword=2.5*&LATEX_length($word);
2469: if ($min_length<$lengthword) {$min_length=$lengthword;}
2470: }
2471: }
2472: } else {
2473: $current_length=2.5*&LATEX_length($data);
2474: my @words=split(/ /,$data);
2475: foreach my $word (@words) {
2476: my $lengthword=2*&LATEX_length($word);
2477: if ($min_length<$lengthword) {$min_length=$lengthword;}
2478: }
2479: }
2480: for (my $c = 0; $c < $colspan; $c++) {
2481: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2482: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2483: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2484: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2485: }
2486: }
2487: }
2488: # Substitute all of the tables nested in this cell in their appropriate places.
2489:
2490:
2491: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2492: for (my $in=0; $in<=$nested_count; $in++) {
2493: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2494: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2495: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2496: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2497:
2498: }
2499: # Should be be killing off the 'include' elements as they're used up?
2500:
2501: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2502:
2503:
2504:
2505:
2506: # the colspan array will indicate how many columns will be spanned by this
2507: # cell..this requires that counter_columns also be adjusted accordingly
2508: # so that the next bunch of text goes in the right cell. Note that since
2509: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2510: #
2511:
2512: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2513: for (my $i = 0; $i < ($colspan -1); $i++) {
2514: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2515: }
2516: for (my $r = 0; $r < $rowspan; $r++) {
2517: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2518: # Put empty text in spanned cols.
2519:
2520: }
2521:
2522: }
2523:
2524: return '';
2525: }
2526:
2527: sub end_td {
2528: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2529: my $currentstring = '';
2530: if ($target eq 'web' || $target eq 'webgrade') {
2531: $currentstring = $token->[2];
2532: } elsif ($target eq 'tex') {
2533: $Apache::londefdef::TD_redirection =0;
2534: &end_td_tex($parstack,$parser,$safeeval);
2535: }
2536: return $currentstring;
2537: }
2538:
2539: #-- <th> tag (end tag optional)
2540: sub start_th {
2541: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2542: my $currentstring = '';
2543: if ($target eq 'web' || $target eq 'webgrade') {
2544: $currentstring = $token->[4];
2545: } elsif ($target eq 'tex') {
2546: $Apache::londefdef::TD_redirection = 1;
2547: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2548: }
2549: return $currentstring;
2550: }
2551:
2552: sub tagg_check {
2553: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2554: my @ar=@$parstack;
2555: for (my $i=$#ar-1;$i>=0;$i--) {
2556: if (lc($$tagstack[$i]) eq $good_tag) {
2557: &start_th_tex($parstack,$parser,$safeeval);
2558: last;
2559: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2560: splice @ar, $i+1;
2561: &end_th_tex(\@ar,$parser,$safeeval);
2562: &start_th_tex($parstack,$parser,$safeeval);
2563: last;
2564: }
2565: }
2566: return '';
2567: }
2568:
2569: sub start_th_tex {
2570: my ($parstack,$parser,$safeeval) = @_;
2571:
2572: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2573: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2574: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2575:
2576: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2577: my $table = $Apache::londefdef::table[-1];
2578: $table->add_cell('\textbf{', $config);
2579:
2580: #-------------------------------------------------------------------------------------
2581: #
2582: # Old table code.
2583: #
2584: #--------------------------------------------------------------------------------------
2585:
2586: if (0) {
2587:
2588:
2589: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2590: if ($alignchar eq '') {
2591: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2592: }
2593: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2594: $Apache::londefdef::table[-1]{'counter_columns'}++;
2595: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2596: if (defined $TeXwidth) {
2597: my $current_length=&recalc($TeXwidth);
2598: $current_length=~/(\d+\.?\d*)/;
2599: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2600: }
2601: }
2602:
2603: # Accept xml until the </th> tag.
2604:
2605: &Apache::lonxml::startredirection();
2606: return '';
2607: }
2608:
2609: sub end_th_tex {
2610: my ($parstack,$parser,$safeeval) = @_;
2611:
2612: my $table = $Apache::londefdef::table[-1];
2613: my $text = &Apache::lonxml::endredirection();
2614: $table->append_cell_text($text.'}');
2615:
2616: #-----------------------------------------------------------------------------
2617: # Old table code:
2618: #-----------------------------------------------------------------------------
2619:
2620: if (0) {
2621: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2622: my $data=&Apache::lonxml::endredirection();
2623: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2624: if (defined $TeXwidth) {
2625: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2626: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2627: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2628: } else {
2629: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2630: my $garbage_data=$data;
2631: my $fwidth=0;
2632: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2633: my $current_length=&recalc($1);
2634: $current_length=~/(\d+\.?\d*)/;
2635: if ($fwidth<$1) {$fwidth=$1;}
2636: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2637: }
2638: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2639: my $current_length=$1;
2640: if ($fwidth<$current_length) {$fwidth=$current_length;}
2641: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2642: }
2643: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2644: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2645: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2646: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2647: } else {
2648: $data=~s/^\s+(\S.*)/$1/;
2649: $data=~s/(.*\S)\s+$/$1/;
2650: $data=~s/(\s)+/$1/;
2651: my ($current_length,$min_length)=(0,0);
2652: if ($data=~/\\vskip/) {
2653: my $newdata=$data;
2654: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2655: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2656: foreach my $elementdata (@newdata) {
2657: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2658: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2659: my @words=split(/ /,$elementdata);
2660: foreach my $word (@words) {
2661: my $lengthword=2.5*&LATEX_length($word);
2662: if ($min_length<$lengthword) {$min_length=$lengthword;}
2663: }
2664: }
2665: } else {
2666: $current_length=2.5*&LATEX_length($data);
2667: my @words=split(/ /,$data);
2668: foreach my $word (@words) {
2669: my $lengthword=2*&LATEX_length($word);
2670: if ($min_length<$lengthword) {$min_length=$lengthword;}
2671: }
2672: }
2673: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2674: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2675: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2676: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2677: }
2678: }
2679: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2680: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2681: }
2682: #make data bold
2683: $data='\textbf{'.$data.'}';
2684: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2685: }
2686: return'';
2687: }
2688:
2689: sub end_th {
2690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2691: my $currentstring = &end_p(); # Close any open <p> in the row.
2692: if ($target eq 'web' || $target eq 'webgrade') {
2693: $currentstring .= $token->[2];
2694: } elsif ($target eq 'tex') {
2695: $Apache::londefdef::TD_redirection =0;
2696: &end_th_tex($parstack,$parser,$safeeval);
2697: }
2698: return $currentstring;
2699: }
2700:
2701: #-- <img> tag (end tag forbidden)
2702: #
2703: # Render the <IMG> tag.
2704: # <IMG> has the following attributes (in addition to the
2705: # standard HTML ones:
2706: # TeXwrap - Governs how the tex target will try to wrap text around
2707: # horizontally aligned images.
2708: # TeXwidth - The width of the image when rendered for print (mm).
2709: # TeXheight - The height of the image when rendered for print (mm)
2710: # (Note there seems to also be support for this as a % of page size)
2711: #
2712: sub start_img {
2713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2714: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2715: undef,1);
2716: if (! $src &&
2717: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2718: ) {
2719: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2720: return '';
2721: }
2722: &Apache::lonxml::extlink($src);
2723: my $currentstring = '';
2724: my $scaling = .3;
2725:
2726: # Render unto browsers that which are the browser's...
2727:
2728: if ($target eq 'web' || $target eq 'webgrade') {
2729: my $enc = ('yes' eq
2730: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2731: $safeeval)));
2732: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2733: $enc);
2734:
2735: # and render unto TeX that which is LaTeX
2736: } elsif ($target eq 'tex') {
2737: #
2738: # The alignment will require some superstructure to be put around
2739: # the \includegraphics stuff. At present we can only partially
2740: # simulate the alignments offered by html.
2741: #
2742: #
2743: my $align = lc(&Apache::lonxml::get_param('align',
2744: $parstack,
2745: $safeeval,
2746: undef,1));
2747: if(!$align) {
2748: $align = "bottom"; # This is html's default so it's ours too.
2749: }
2750: #
2751: &Apache::lonxml::debug("Alignemnt = $align");
2752: # LaTeX's image/text wrapping is really bad since it wants to
2753: # make figures float.
2754: # The user has the optional parameter (applicable only to l/r
2755: # alignment to use the picins/parpic directive to get wrapped text
2756: # this is also imperfect.. that's why we give them a choice...
2757: # so they can't yell at us for our choice.
2758: #
2759: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2760: $parstack,
2761: $safeeval,
2762: undef,0);
2763: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2764: if(!$latex_rendering) {
2765: $latex_rendering = "texwrap";
2766: }
2767: # using texwrap inside a table does not work. So, if after all of this,
2768: # texwrap is on, we turn it off if we detect we're in a table:
2769: #
2770: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2771: $latex_rendering = 'parpic';
2772: }
2773:
2774: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2775:
2776: #if original bmp/gif/jpg/png file exist do following:
2777: my $origsrc=$src;
2778: my ($path,$file) = &get_eps_image($src);
2779: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2780: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2781: &Apache::lonxml::debug("path = $path file = $file src = $src");
2782: if (-e $src) {
2783: &Apache::lonxml::debug("$src exists");
2784: my ($height_param,$width_param)=
2785: &image_size($origsrc,0.3,$parstack,$safeeval);
2786: my $size;
2787: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2788: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2789: # Default size if not able to extract that (e.g. eps image).
2790:
2791: # &Apache::lonnet::logthis("Size = $size");
2792:
2793: $size='['.$size;
2794: $size=~s/,$/]/;
2795: $currentstring .= '\graphicspath{{'.$path.'}}'
2796: .'\includegraphics'.$size.'{'.$file.'} ';
2797: my $closure;
2798: ($currentstring, $closure) = &align_latex_image($align,
2799: $latex_rendering,
2800: $currentstring,
2801: $width_param,
2802: $height_param);
2803: $currentstring .= $closure;
2804:
2805: } else {
2806: &Apache::lonxml::debug("$src does not exist");
2807: #original image file doesn't exist so check the alt attribute
2808: my $alt =
2809: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2810: unless ($alt) {
2811: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2812: }
2813:
2814: if ($alt) { $currentstring .= ' '.$alt.' '; }
2815: }
2816:
2817: # And here's where the semi-quote breaks down: allow the user
2818: # to edit the beast as well by rendering the problem for edit:
2819: } elsif ($target eq 'edit') {
2820: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2821: $currentstring .=&Apache::edit::tag_start($target,$token);
2822: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2823: &Apache::edit::browse('src',undef,'alt',$only).' '.
2824: &Apache::edit::search('src',undef,'alt').'<br />';
2825: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2826: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2827: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2828: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2829: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2830: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2831: ['','bottom','middle','top','left','right'],$token,5);
2832: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2833: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2834: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2835: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2836:
2837: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2838: ['no','yes'], $token, 2);
2839: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2840: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2841: }
2842: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2843: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2844: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2845: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2846:
2847: if ($token->[2]{'src'}=~/\$/) {
2848: $currentstring.=&mt('Variable image source');
2849: } elsif ($token->[2]{'src'}=~/\S/) {
2850: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2851: if ($width) { $currentstring.=' width="'.$width.'" '; }
2852: if ($height) { $currentstring.=' height="'.$height.'" '; }
2853: $currentstring .= ' />';
2854: } else {
2855: $currentstring.=&mt("No image source specified");
2856: }
2857: } elsif ($target eq 'modified') {
2858: my ($osrc,$owidth,$oheight)=
2859: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2860: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2861: $safeeval,'src','alt','align',
2862: 'TeXwidth','TeXheight', 'TeXwrap',
2863: 'width','height','encrypturl');
2864: my ($nsrc,$nwidth,$nheight)=
2865: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2866: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2867: &image_replication($loc);
2868: my ($iwidth,$iheight);
2869: if (-e $loc) {
2870: my $image = Image::Magick->new;
2871: $image->Read($loc);
2872: ($iwidth, $iheight) = ($image->Get('width'),
2873: $image->Get('height'));
2874: }
2875: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2876: # changed image or no size specified,
2877: # if they didn't explicitly change the
2878: # width or height use the ones from the image
2879: if ($iwidth && $iheight) {
2880: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2881: $token->[2]{'width'} = $iwidth;$ctag=1;
2882: }
2883: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2884: $token->[2]{'height'}=$iheight;$ctag=1;
2885: }
2886: }
2887: }
2888: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2889: # if we don't have a width or height
2890: if ($iwidth && $cwidth && !$cheight) {
2891: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2892: }
2893: if ($iheight && $cheight && !$cwidth) {
2894: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2895: }
2896: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2897: }
2898:
2899: return $currentstring;
2900: }
2901:
2902: sub end_img {
2903: my ($target,$token) = @_;
2904: my $currentstring = '';
2905: if ($target eq 'web' || $target eq 'webgrade') {
2906: $currentstring = $token->[2];
2907: } elsif ($target eq 'tex') {
2908: $currentstring = '';
2909: }
2910: return $currentstring;
2911: }
2912:
2913: #-- <applet> tag (end tag required)
2914: sub start_applet {
2915: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2916:
2917: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2918: &Apache::lonxml::extlink($code);
2919: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2920: undef,1);
2921: &Apache::lonxml::extlink($archive);
2922: my $currentstring = '';
2923: if ($target eq 'web' || $target eq 'webgrade') {
2924: $currentstring = $token->[4];
2925: } elsif ($target eq 'tex') {
2926: # Turn off some stuff we can't be inside thank you LaTeX
2927:
2928: my $restart_sub = 0;
2929: my $restart_sup = 0;
2930:
2931: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2932: # using the start_ stop_ functions.. those tags only care about
2933: # $target.
2934:
2935: if (&is_inside_of($tagstack, "sub")) {
2936: $restart_sub = 1;
2937: $currentstring .= &end_sub($target, $token, $tagstack,
2938: $parstack, $parser, $safeeval);
2939: }
2940: if (&is_inside_of($tagstack, "sup")) {
2941: $restart_sup = 1;
2942: $currentstring .= &end_sup($target, $token, $tagstack,
2943: $parstack, $parser, $safeeval);
2944: }
2945:
2946: # Now process the applet; just replace it with its alt attribute.
2947:
2948: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2949: $safeeval,undef,1);
2950: unless ($alttag) {
2951: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2952: undef,1);
2953: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2954: $code);
2955: }
2956: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2957: '.}\end{center}';
2958:
2959: # Turn stuff back on that we can't be inside of.
2960:
2961: if ($restart_sub) {
2962: $currentstring .= &start_sub($target, $token, $tagstack,
2963: $parstack, $parser, $safeeval);
2964: }
2965: if ($restart_sup) {
2966: $currentstring .= &start_sup($target, $token, $tagstack,
2967: $parstack, $parser, $safeeval);
2968: }
2969: }
2970: return $currentstring;
2971: }
2972:
2973: sub end_applet {
2974: my ($target,$token) = @_;
2975: my $currentstring = '';
2976: if ($target eq 'web' || $target eq 'webgrade') {
2977: $currentstring = $token->[2];
2978: } elsif ($target eq 'tex') {
2979: }
2980: return $currentstring;
2981: }
2982:
2983: #-- <embed> tag (end tag optional/required)
2984: sub start_embed {
2985: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2986: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2987: &Apache::lonxml::extlink($src);
2988: my $currentstring = '';
2989: if ($target eq 'web' || $target eq 'webgrade') {
2990: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2991: } elsif ($target eq 'tex') {
2992: }
2993: return $currentstring;
2994: }
2995:
2996: sub end_embed {
2997: my ($target,$token) = @_;
2998: my $currentstring = '';
2999: if ($target eq 'web' || $target eq 'webgrade') {
3000: $currentstring = $token->[2];
3001: } elsif ($target eq 'tex') {
3002: # ./.
3003: }
3004: return $currentstring;
3005: }
3006:
3007: #-- <param> tag (end tag forbidden)
3008: sub start_param {
3009: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3010: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3011: undef,1);
3012: if ($name =~/^cabbase$/i) {
3013: my $value=&Apache::lonxml::get_param('value',$parstack,
3014: $safeeval,undef,1);
3015: &Apache::lonxml::extlink($value);
3016: } elsif ($name eq 'flashvars') {
3017: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3018: eq 'application/x-shockwave-flash') {
3019: my $launcher =
3020: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3021: if ($launcher) {
3022: &Apache::lonxml::extlink($launcher);
3023: }
3024: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3025: $safeeval,undef,1);
3026: if ($flashvars ne '') {
3027: foreach my $item (split(/\&/,$flashvars)) {
3028: my ($key,$value)=split(/=/,$item,2);
3029: if ($key eq 'content') {
3030: if ($value ne '') {
3031: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3032: &Apache::lonxml::extlink($dir.$value);
3033: }
3034: } elsif ($key eq 'thumb') {
3035: if ($value ne '') {
3036: &Apache::lonxml::extlink($value);
3037: }
3038: }
3039: }
3040: }
3041: }
3042: }
3043: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3044: if ($src ne '') {
3045: &Apache::lonxml::extlink($src);
3046: }
3047: my $currentstring = '';
3048: if ($target eq 'web' || $target eq 'webgrade') {
3049: my %toconvert;
3050: if ($src) { $toconvert{'src'}= $src; }
3051: if ($name=~/^cabbase$/i) {
3052: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3053: $safeeval,undef,1);
3054: }
3055: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3056: } elsif ($target eq 'tex') {
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_param {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web' || $target eq 'webgrade') {
3065: $currentstring = $token->[2];
3066: } elsif ($target eq 'tex') {
3067: }
3068: return $currentstring;
3069: }
3070:
3071: #-- <allow> tag
3072: sub start_allow {
3073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3074: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3075: &Apache::lonxml::extlink($src);
3076:
3077: if ($target eq 'tex') { &image_replication($src); }
3078: my $result;
3079: if ($target eq 'edit') {
3080: $result .=&Apache::edit::tag_start($target,$token);
3081: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3082: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3083: } elsif ($target eq 'modified') {
3084: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3085: $safeeval,'src');
3086: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3087: }
3088: return $result;
3089: }
3090:
3091: sub end_allow {
3092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3093: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3094: return '';
3095: }
3096:
3097: #-- Frames (end tag required)
3098: #-- <frameset>
3099: sub start_frameset {
3100: my ($target,$token) = @_;
3101: my $currentstring = ''; # Close any pending para.
3102: if ($target eq 'web' || $target eq 'webgrade') {
3103: $currentstring =
3104: &Apache::loncommon::start_page($Apache::londefdef::title,
3105: $Apache::londefdef::head,
3106: {'add_entries' => $token->[2],
3107: # 'no_title' => 1,
3108: 'force_register' => 1,
3109: 'frameset' => 1,});
3110:
3111: }
3112: return $currentstring;
3113: }
3114:
3115: sub end_frameset {
3116: my ($target,$token) = @_;
3117: my $currentstring = '';
3118: if ($target eq 'web' || $target eq 'webgrade') {
3119: $currentstring = $token->[2];
3120: }
3121: return $currentstring;
3122: }
3123:
3124: #-- <xmp> (end tag required)
3125: sub start_xmp {
3126: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3127: my $currentstring = '';
3128: if ($target eq 'web' || $target eq 'webgrade') {
3129: $currentstring .= $token->[4];
3130: } elsif ($target eq 'tex') {
3131: $currentstring .= '\begin{verbatim}';
3132: }
3133: return $currentstring;
3134: }
3135:
3136: sub end_xmp {
3137: my ($target,$token) = @_;
3138: my $currentstring = '';
3139: if ($target eq 'web' || $target eq 'webgrade') {
3140: $currentstring .= $token->[2];
3141: } elsif ($target eq 'tex') {
3142: $currentstring .= '\end{verbatim}';
3143: }
3144: return $currentstring;
3145: }
3146:
3147: #-- <pre> (end tag required)
3148: sub start_pre {
3149: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3150: my $currentstring = &end_p(); # close off pending <p>
3151: if ($target eq 'web' || $target eq 'webgrade') {
3152: $currentstring .= $token->[4];
3153: } elsif ($target eq 'tex') {
3154: $currentstring .= '\begin{verbatim}';
3155: &Apache::lonxml::disable_LaTeX_substitutions();
3156: }
3157: return $currentstring;
3158: }
3159:
3160: sub end_pre {
3161: my ($target,$token) = @_;
3162: my $currentstring = '';
3163: if ($target eq 'web' || $target eq 'webgrade') {
3164: $currentstring .= $token->[2];
3165: } elsif ($target eq 'tex') {
3166: $currentstring .= '\end{verbatim}';
3167: &Apache::lonxml::enable_LaTeX_substitutions();
3168: }
3169: return $currentstring;
3170: }
3171:
3172: #-- <insert>
3173: sub start_insert {
3174: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3175: my $currentstring = '';
3176: if ($target eq 'web' || $target eq 'webgrade') {
3177: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3178: $currentstring .= '<b>'.$display.'</b>';;
3179: }
3180: return $currentstring;
3181: }
3182:
3183: sub end_insert {
3184: my ($target,$token) = @_;
3185: my $currentstring = '';
3186: if ($target eq 'web' || $target eq 'webgrade') {
3187: $currentstring .= '';
3188: }
3189: return $currentstring;
3190: }
3191:
3192: #-- <externallink>
3193: sub start_externallink {
3194: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3195: my $currentstring = '';
3196: if ($target eq 'web' || $target eq 'webgrade') {
3197: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3198: $currentstring .= '<b>'.$display.'</b>';;
3199: }
3200: return $currentstring;
3201: }
3202:
3203: sub end_externallink {
3204: my ($target,$token) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web' || $target eq 'webgrade') {
3207: $currentstring .= '';
3208: }
3209: return $currentstring;
3210: }
3211:
3212: #-- <blankspace heigth="">
3213: sub start_blankspace {
3214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3215: my $currentstring = &end_p(); # closes off any unclosed <p>
3216: if ($target eq 'tex') {
3217: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3218: $currentstring .= '\vskip '.$howmuch.' ';
3219: }
3220: return $currentstring;
3221: }
3222:
3223: sub end_blankspace {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'tex') {
3227: $currentstring .= '';
3228: }
3229: return $currentstring;
3230: }
3231:
3232: #-- <abbr> tag (end tag required)
3233: sub start_abbr {
3234: my ($target,$token) = @_;
3235: my $currentstring = '';
3236: if ($target eq 'web' || $target eq 'webgrade') {
3237: $currentstring = $token->[4];
3238: }
3239: return $currentstring;
3240: }
3241:
3242: sub end_abbr {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web' || $target eq 'webgrade') {
3246: $currentstring = $token->[2];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: #-- <acronym> tag (end tag required)
3252: sub start_acronym {
3253: my ($target,$token) = @_;
3254: my $currentstring = '';
3255: if ($target eq 'web' || $target eq 'webgrade') {
3256: $currentstring = $token->[4];
3257: }
3258: return $currentstring;
3259: }
3260:
3261: sub end_acronym {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web' || $target eq 'webgrade') {
3265: $currentstring = $token->[2];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: #-- <area> tag (end tag forbidden)
3271: sub start_area {
3272: my ($target,$token) = @_;
3273: my $currentstring = '';
3274: if ($target eq 'web' || $target eq 'webgrade') {
3275: $currentstring = $token->[4];
3276: }
3277: return $currentstring;
3278: }
3279:
3280: sub end_area {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web' || $target eq 'webgrade') {
3284: $currentstring = $token->[2];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: #-- <base> tag (end tag forbidden)
3290: sub start_base {
3291: my ($target,$token) = @_;
3292: my $currentstring = '';
3293: if ($target eq 'web' || $target eq 'webgrade') {
3294: $currentstring = $token->[4];
3295: }
3296: return $currentstring;
3297: }
3298:
3299: sub end_base {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web' || $target eq 'webgrade') {
3303: $currentstring = $token->[2];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: #-- <bdo> tag (end tag required)
3309: sub start_bdo {
3310: my ($target,$token) = @_;
3311: my $currentstring = '';
3312: if ($target eq 'web' || $target eq 'webgrade') {
3313: $currentstring = $token->[4];
3314: }
3315: return $currentstring;
3316: }
3317:
3318: sub end_bdo {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web' || $target eq 'webgrade') {
3322: $currentstring = $token->[2];
3323: }
3324: return $currentstring;
3325: }
3326:
3327: #-- <bgsound> tag (end tag optional)
3328: sub start_bgsound {
3329: my ($target,$token) = @_;
3330: my $currentstring = '';
3331: if ($target eq 'web' || $target eq 'webgrade') {
3332: $currentstring = $token->[4];
3333: }
3334: return $currentstring;
3335: }
3336:
3337: sub end_bgsound {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web' || $target eq 'webgrade') {
3341: $currentstring = $token->[2];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: #-- <blink> tag (end tag required)
3347: sub start_blink {
3348: my ($target,$token) = @_;
3349: my $currentstring = '';
3350: if ($target eq 'web' || $target eq 'webgrade') {
3351: $currentstring = $token->[4];
3352: }
3353: return $currentstring;
3354: }
3355:
3356: sub end_blink {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web' || $target eq 'webgrade') {
3360: $currentstring = $token->[2];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: #-- <blockquote> tag (end tag required)
3366: sub start_blockquote {
3367: my ($target,$token) = @_;
3368: my $currentstring = &end_p(); # Close any unclosed <p>
3369: if ($target eq 'web' || $target eq 'webgrade') {
3370: $currentstring .= $token->[4];
3371: }
3372: if ($target eq 'tex') {
3373: $currentstring .= '\begin{quote}';
3374: }
3375: return $currentstring;
3376: }
3377:
3378: sub end_blockquote {
3379: my ($target,$token) = @_;
3380: my $currentstring = '';
3381: if ($target eq 'web' || $target eq 'webgrade') {
3382: $currentstring = $token->[2];
3383: }
3384: if ($target eq 'tex') {
3385: $currentstring = '\end{quote}';
3386: }
3387: return $currentstring;
3388: }
3389:
3390: #-- <button> tag (end tag required)
3391: sub start_button {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: $currentstring = $token->[4];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: sub end_button {
3401: my ($target,$token) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web' || $target eq 'webgrade') {
3404: $currentstring = $token->[2];
3405: }
3406: return $currentstring;
3407: }
3408:
3409: #-- <caption> tag (end tag required)
3410: sub start_caption {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring = $token->[4];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: sub end_caption {
3420: my ($target,$token) = @_;
3421: my $currentstring = '';
3422: if ($target eq 'web' || $target eq 'webgrade') {
3423: $currentstring = $token->[2];
3424: }
3425: return $currentstring;
3426: }
3427:
3428: #-- <col> tag (end tag forbdden)
3429: sub start_col {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web' || $target eq 'webgrade') {
3433: $currentstring = $token->[4];
3434: }
3435: return $currentstring;
3436: }
3437:
3438: sub end_col {
3439: my ($target,$token) = @_;
3440: my $currentstring = '';
3441: if ($target eq 'web' || $target eq 'webgrade') {
3442: $currentstring = $token->[2];
3443: }
3444: return $currentstring;
3445: }
3446:
3447: #-- <colgroup tag (end tag optional)
3448: sub start_colgroup {
3449: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web' || $target eq 'webgrade') {
3452: $currentstring = $token->[4];
3453: }
3454: if ($target eq 'tex') {
3455: # TODO: Ensure this tag is in a table:
3456:
3457: # Fetch the attributes and build the hash for the
3458: # call to define_colgroup.
3459:
3460: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3461: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3462:
3463: my %colgroup_params;
3464: if ($span ne '') {
3465: $colgroup_params{'span'} = $span;
3466: }
3467: if ($halign ne '') {
3468: $colgroup_params{'halign'} = $halign;
3469: }
3470:
3471: my $table = $Apache::londefdef::table[-1];
3472: $table->define_colgroup(\%colgroup_params);
3473:
3474: }
3475: return $currentstring;
3476: }
3477:
3478: sub end_colgroup {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web' || $target eq 'webgrade') {
3482: $currentstring = $token->[2];
3483: }
3484: return $currentstring;
3485: }
3486:
3487:
3488: #-- <del> tag (end tag required)
3489: sub start_del {
3490: my ($target,$token) = @_;
3491: my $currentstring = '';
3492: if ($target eq 'web' || $target eq 'webgrade') {
3493: $currentstring = $token->[4];
3494: } elsif ($target eq 'tex') {
3495: &disable_para();
3496: $currentstring .= '\st{';
3497: }
3498: return $currentstring;
3499: }
3500:
3501: sub end_del {
3502: my ($target,$token) = @_;
3503: my $currentstring = '';
3504: if ($target eq 'web' || $target eq 'webgrade') {
3505: $currentstring = $token->[2];
3506: } elsif ($target eq 'tex') {
3507: &enable_para();
3508: $currentstring = '}';
3509: }
3510: return $currentstring;
3511: }
3512:
3513: #-- <fieldset> tag (end tag required)
3514: sub start_fieldset {
3515: my ($target,$token) = @_;
3516: my $currentstring = '';
3517: if ($target eq 'web' || $target eq 'webgrade') {
3518: $currentstring = $token->[4];
3519: }
3520: return $currentstring;
3521: }
3522:
3523: sub end_fieldset {
3524: my ($target,$token) = @_;
3525: my $currentstring = '';
3526: if ($target eq 'web' || $target eq 'webgrade') {
3527: $currentstring = $token->[2];
3528: }
3529: return $currentstring;
3530: }
3531:
3532: #-- <frame> tag (end tag forbidden)
3533: sub start_frame {
3534: my ($target,$token) = @_;
3535: my $currentstring = '';
3536: if ($target eq 'web' || $target eq 'webgrade') {
3537: $currentstring = $token->[4];
3538: }
3539: return $currentstring;
3540: }
3541:
3542: sub end_frame {
3543: my ($target,$token) = @_;
3544: my $currentstring = '';
3545: if ($target eq 'web' || $target eq 'webgrade') {
3546: $currentstring = $token->[2];
3547: }
3548: return $currentstring;
3549: }
3550:
3551: #-- <iframe> tag (end tag required)
3552: sub start_iframe {
3553: my ($target,$token) = @_;
3554: my $currentstring = '';
3555: if ($target eq 'web' || $target eq 'webgrade') {
3556: $currentstring = $token->[4];
3557: }
3558: return $currentstring;
3559: }
3560:
3561: sub end_iframe {
3562: my ($target,$token) = @_;
3563: my $currentstring = '';
3564: if ($target eq 'web' || $target eq 'webgrade') {
3565: $currentstring = $token->[2];
3566: }
3567: return $currentstring;
3568: }
3569:
3570: #-- <ins> tag (end tag required)
3571: sub start_ins {
3572: my ($target,$token) = @_;
3573: my $currentstring = '';
3574: if ($target eq 'web' || $target eq 'webgrade') {
3575: $currentstring = $token->[4];
3576: }
3577: return $currentstring;
3578: }
3579:
3580: sub end_ins {
3581: my ($target,$token) = @_;
3582: my $currentstring = '';
3583: if ($target eq 'web' || $target eq 'webgrade') {
3584: $currentstring = $token->[2];
3585: }
3586: return $currentstring;
3587: }
3588:
3589: #-- <isindex> tag (end tag forbidden)
3590: sub start_isindex {
3591: my ($target,$token) = @_;
3592: my $currentstring = '';
3593: if ($target eq 'web' || $target eq 'webgrade') {
3594: $currentstring = $token->[4];
3595: }
3596: return $currentstring;
3597: }
3598:
3599: sub end_isindex {
3600: my ($target,$token) = @_;
3601: my $currentstring = '';
3602: if ($target eq 'web' || $target eq 'webgrade') {
3603: $currentstring = $token->[2];
3604: }
3605: return $currentstring;
3606: }
3607:
3608: #-- <keygen> tag (end tag forbidden)
3609: sub start_keygen {
3610: my ($target,$token) = @_;
3611: my $currentstring = '';
3612: if ($target eq 'web' || $target eq 'webgrade') {
3613: $currentstring = $token->[4];
3614: }
3615: return $currentstring;
3616: }
3617:
3618: sub end_keygen {
3619: my ($target,$token) = @_;
3620: my $currentstring = '';
3621: if ($target eq 'web' || $target eq 'webgrade') {
3622: $currentstring = $token->[2];
3623: }
3624: return $currentstring;
3625: }
3626:
3627: #-- <label> tag
3628: sub start_label {
3629: my ($target,$token) = @_;
3630: my $currentstring = '';
3631: if ($target eq 'web' || $target eq 'webgrade') {
3632: $currentstring = $token->[4];
3633: }
3634: return $currentstring;
3635: }
3636:
3637: sub end_label {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web' || $target eq 'webgrade') {
3641: $currentstring = $token->[2];
3642: }
3643: return $currentstring;
3644: }
3645:
3646: #-- <layer> tag (end tag required)
3647: sub start_layer {
3648: my ($target,$token) = @_;
3649: my $currentstring = '';
3650: if ($target eq 'web' || $target eq 'webgrade') {
3651: $currentstring = $token->[4];
3652: }
3653: return $currentstring;
3654: }
3655:
3656: sub end_layer {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web' || $target eq 'webgrade') {
3660: $currentstring = $token->[2];
3661: }
3662: return $currentstring;
3663: }
3664:
3665: #-- <legend> tag (end tag required)
3666: sub start_legend {
3667: my ($target,$token) = @_;
3668: my $currentstring = '';
3669: if ($target eq 'web' || $target eq 'webgrade') {
3670: $currentstring = $token->[4];
3671: }
3672: return $currentstring;
3673: }
3674:
3675: sub end_legend {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[2];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: #-- <link> tag (end tag forbidden)
3685: sub start_link {
3686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3687: my $currentstring = '';
3688: if ($target eq 'web' || $target eq 'webgrade') {
3689: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3690: undef,1);
3691: &Apache::lonxml::extlink($href);
3692: $currentstring = $token->[4];
3693: }
3694: return $currentstring;
3695: }
3696:
3697: sub end_link {
3698: my ($target,$token) = @_;
3699: my $currentstring = '';
3700: if ($target eq 'web' || $target eq 'webgrade') {
3701: $currentstring = $token->[2];
3702: }
3703: return $currentstring;
3704: }
3705:
3706: #-- <marquee> tag (end tag optional)
3707: sub start_marquee {
3708: my ($target,$token) = @_;
3709: my $currentstring = '';
3710: if ($target eq 'web' || $target eq 'webgrade') {
3711: $currentstring = $token->[4];
3712: }
3713: return $currentstring;
3714: }
3715:
3716: sub end_marquee {
3717: my ($target,$token) = @_;
3718: my $currentstring = '';
3719: if ($target eq 'web' || $target eq 'webgrade') {
3720: $currentstring = $token->[2];
3721: }
3722: return $currentstring;
3723: }
3724:
3725: #-- <multicol> tag (end tag required)
3726: sub start_multicol {
3727: my ($target,$token) = @_;
3728: my $currentstring = &end_p(); # Close any pending <p>
3729: if ($target eq 'web' || $target eq 'webgrade') {
3730: $currentstring .= $token->[4];
3731: }
3732: return $currentstring;
3733: }
3734:
3735: sub end_multicol {
3736: my ($target,$token) = @_;
3737: my $currentstring = '';
3738: if ($target eq 'web' || $target eq 'webgrade') {
3739: $currentstring = $token->[2];
3740: }
3741: return $currentstring;
3742: }
3743:
3744: #-- <nobr> tag (end tag required)
3745: sub start_nobr {
3746: my ($target,$token) = @_;
3747: my $currentstring = '';
3748: if ($target eq 'web' || $target eq 'webgrade') {
3749: $currentstring = $token->[4];
3750: } elsif ($target eq 'tex') {
3751: $currentstring='\mbox{';
3752: }
3753: return $currentstring;
3754: }
3755:
3756: sub end_nobr {
3757: my ($target,$token) = @_;
3758: my $currentstring = '';
3759: if ($target eq 'web' || $target eq 'webgrade') {
3760: $currentstring = $token->[2];
3761: } elsif ($target eq 'tex') {
3762: $currentstring='}';
3763: }
3764: return $currentstring;
3765: }
3766:
3767: #-- <noembed> tag (end tag required)
3768: sub start_noembed {
3769: my ($target,$token) = @_;
3770: my $currentstring = '';
3771: if ($target eq 'web' || $target eq 'webgrade') {
3772: $currentstring = $token->[4];
3773: }
3774: return $currentstring;
3775: }
3776:
3777: sub end_noembed {
3778: my ($target,$token) = @_;
3779: my $currentstring = '';
3780: if ($target eq 'web' || $target eq 'webgrade') {
3781: $currentstring = $token->[2];
3782: }
3783: return $currentstring;
3784: }
3785:
3786: #-- <noframes> tag (end tag required)
3787: sub start_noframes {
3788: my ($target,$token) = @_;
3789: my $currentstring = '';
3790: if ($target eq 'web' || $target eq 'webgrade') {
3791: $currentstring = $token->[4];
3792: }
3793: return $currentstring;
3794: }
3795:
3796: sub end_noframes {
3797: my ($target,$token) = @_;
3798: my $currentstring = '';
3799: if ($target eq 'web' || $target eq 'webgrade') {
3800: $currentstring = $token->[2];
3801: }
3802: return $currentstring;
3803: }
3804:
3805: #-- <nolayer> tag (end tag required)
3806: sub start_nolayer {
3807: my ($target,$token) = @_;
3808: my $currentstring = '';
3809: if ($target eq 'web' || $target eq 'webgrade') {
3810: $currentstring = $token->[4];
3811: }
3812: return $currentstring;
3813: }
3814:
3815: sub end_nolayer {
3816: my ($target,$token) = @_;
3817: my $currentstring = '';
3818: if ($target eq 'web' || $target eq 'webgrade') {
3819: $currentstring = $token->[2];
3820: }
3821: return $currentstring;
3822: }
3823:
3824: #-- <noscript> tag (end tag required)
3825: sub start_noscript {
3826: my ($target,$token) = @_;
3827: my $currentstring = '';
3828: if ($target eq 'web' || $target eq 'webgrade') {
3829: $currentstring = $token->[4];
3830: }
3831: return $currentstring;
3832: }
3833:
3834: sub end_noscript {
3835: my ($target,$token) = @_;
3836: my $currentstring = '';
3837: if ($target eq 'web' || $target eq 'webgrade') {
3838: $currentstring = $token->[2];
3839: }
3840: return $currentstring;
3841: }
3842:
3843: #-- <object> tag (end tag required)
3844: sub start_object {
3845: my ($target,$token) = @_;
3846: my $currentstring = '';
3847: if ($target eq 'web' || $target eq 'webgrade') {
3848: $currentstring = $token->[4];
3849: }
3850: return $currentstring;
3851: }
3852:
3853: sub end_object {
3854: my ($target,$token) = @_;
3855: my $currentstring = '';
3856: if ($target eq 'web' || $target eq 'webgrade') {
3857: $currentstring = $token->[2];
3858: }
3859: return $currentstring;
3860: }
3861:
3862: #-- <optgroup> tag (end tag required)
3863: sub start_optgroup {
3864: my ($target,$token) = @_;
3865: my $currentstring = '';
3866: if ($target eq 'web' || $target eq 'webgrade') {
3867: $currentstring = $token->[4];
3868: }
3869: return $currentstring;
3870: }
3871:
3872: sub end_optgroup {
3873: my ($target,$token) = @_;
3874: my $currentstring = '';
3875: if ($target eq 'web' || $target eq 'webgrade') {
3876: $currentstring = $token->[2];
3877: }
3878: return $currentstring;
3879: }
3880:
3881: #-- <samp> tag (end tag required)
3882: sub start_samp {
3883: my ($target,$token) = @_;
3884: my $currentstring = '';
3885: if ($target eq 'web' || $target eq 'webgrade') {
3886: $currentstring = $token->[4];
3887: } elsif ($target eq 'tex') {
3888: $currentstring='\texttt{';
3889: }
3890: return $currentstring;
3891: }
3892:
3893: sub end_samp {
3894: my ($target,$token) = @_;
3895: my $currentstring = '';
3896: if ($target eq 'web' || $target eq 'webgrade') {
3897: $currentstring = $token->[2];
3898: } elsif ($target eq 'tex') {
3899: $currentstring='}';
3900: }
3901: return $currentstring;
3902: }
3903:
3904: #-- <server> tag
3905: sub start_server {
3906: my ($target,$token) = @_;
3907: my $currentstring = '';
3908: if ($target eq 'web' || $target eq 'webgrade') {
3909: $currentstring = $token->[4];
3910: }
3911: return $currentstring;
3912: }
3913:
3914: sub end_server {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[2];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: #-- <spacer> tag (end tag forbidden)
3924: sub start_spacer {
3925: my ($target,$token) = @_;
3926: my $currentstring = &end_p(); # Close off any open <p> tag.
3927: if ($target eq 'web' || $target eq 'webgrade') {
3928: $currentstring .= $token->[4];
3929: }
3930: return $currentstring;
3931: }
3932:
3933: sub end_spacer {
3934: my ($target,$token) = @_;
3935: my $currentstring = '';
3936: if ($target eq 'web' || $target eq 'webgrade') {
3937: $currentstring = $token->[2];
3938: }
3939: return $currentstring;
3940: }
3941:
3942: #-- <span> tag (end tag required)
3943: sub start_span {
3944: my ($target,$token) = @_;
3945: my $currentstring = '';
3946: if ($target eq 'web' || $target eq 'webgrade') {
3947: $currentstring = $token->[4];
3948: }
3949: return $currentstring;
3950: }
3951:
3952: sub end_span {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[2];
3957: }
3958: return $currentstring;
3959: }
3960:
3961: #-- <tbody> tag (end tag optional)
3962: sub start_tbody {
3963: my ($target,$token) = @_;
3964: my $currentstring = '';
3965: if ($target eq 'web' || $target eq 'webgrade') {
3966: $currentstring = $token->[4];
3967: }
3968: if ($target eq 'tex') {
3969: # TODO: Ensure this tag is within a table:
3970:
3971: my $table = $Apache::londefdef::table[-1];
3972: $table->start_body();
3973: }
3974: return $currentstring;
3975: }
3976:
3977: sub end_tbody {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[2];
3982: }
3983: if($target eq 'tex') {
3984: # TODO: Ensure this tag is within a table:
3985:
3986: my $table = $Apache::londefdef::table[-1];
3987: $table->end_body();
3988: }
3989: return $currentstring;
3990: }
3991:
3992: #-- <tfoot> tag (end tag optional)
3993: sub start_tfoot {
3994: my ($target,$token) = @_;
3995: my $currentstring = '';
3996: if ($target eq 'web' || $target eq 'webgrade') {
3997: $currentstring = $token->[4];
3998: }
3999: if ($target eq 'tex') {
4000: # TODO: ensure this is within a table tag.
4001: my $table = $Apache::londefdef::table[-1];
4002: $table->start_foot();
4003: }
4004: return $currentstring;
4005: }
4006:
4007: sub end_tfoot {
4008: my ($target,$token) = @_;
4009: my $currentstring = '';
4010: if ($target eq 'web' || $target eq 'webgrade') {
4011: $currentstring = $token->[2];
4012: }
4013: if ($target eq 'tex') {
4014: # TODO: Ensure this is in side a table
4015: my $table = $Apache::londefdef::table[-1];
4016: $table->end_foot();
4017: }
4018: return $currentstring;
4019: }
4020:
4021: #-- <thead> tag (end tag optional)
4022: sub start_thead {
4023: my ($target,$token) = @_;
4024: my $currentstring = '';
4025: if ($target eq 'web' || $target eq 'webgrade') {
4026: $currentstring = $token->[4];
4027: }
4028: if ($target eq 'tex') {
4029: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4030: my $table = $Apache::londefdef::table[-1];
4031: $table->start_head();
4032: }
4033: return $currentstring;
4034: }
4035:
4036: sub end_thead {
4037: my ($target,$token) = @_;
4038: my $currentstring = '';
4039: if ($target eq 'web' || $target eq 'webgrade') {
4040: $currentstring = $token->[2];
4041: }
4042: if ($target eq 'tex') {
4043: # TODO: Verify we are in a table and ignore tag if not.
4044:
4045: my $table = $Apache::londefdef::table[-1];
4046: $table->end_head();
4047: }
4048: return $currentstring;
4049: }
4050:
4051: #-- <var> tag
4052: sub start_var {
4053: my ($target,$token) = @_;
4054: my $currentstring = '';
4055: if ($target eq 'web' || $target eq 'webgrade') {
4056: $currentstring = $token->[4];
4057: } elsif ($target eq 'tex') {
4058: $currentstring = '\textit{';
4059: }
4060: return $currentstring;
4061: }
4062:
4063: sub end_var {
4064: my ($target,$token) = @_;
4065: my $currentstring = '';
4066: if ($target eq 'web' || $target eq 'webgrade') {
4067: $currentstring = $token->[2];
4068: } elsif ($target eq 'tex') {
4069: $currentstring = '}';
4070: }
4071: return $currentstring;
4072: }
4073:
4074: #-- <wbr> tag (end tag forbidden)
4075: sub start_wbr {
4076: my ($target,$token) = @_;
4077: my $currentstring = '';
4078: if ($target eq 'web' || $target eq 'webgrade') {
4079: $currentstring = $token->[4];
4080: }
4081: return $currentstring;
4082: }
4083:
4084: sub end_wbr {
4085: my ($target,$token) = @_;
4086: my $currentstring = '';
4087: if ($target eq 'web' || $target eq 'webgrade') {
4088: $currentstring = $token->[2];
4089: }
4090: return $currentstring;
4091: }
4092:
4093: #-- <hideweboutput> tag
4094: sub start_hideweboutput {
4095: my ($target,$token) = @_;
4096: if ($target eq 'web' || $target eq 'webgrade') {
4097: &Apache::lonxml::startredirection();
4098: }
4099: return '';
4100: }
4101:
4102: sub end_hideweboutput {
4103: my ($target,$token) = @_;
4104: my $currentstring = '';
4105: if ($target eq 'web' || $target eq 'webgrade') {
4106: $currentstring = &Apache::lonxml::endredirection();
4107: }
4108: return '';
4109: }
4110:
4111:
4112: sub image_replication {
4113: my $src = shift;
4114: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4115: #replicates eps or ps
4116: my $epssrc = my $pssrc = $src;
4117: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4118: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4119: if (not -e $epssrc && not -e $pssrc) {
4120: my $result=&Apache::lonnet::repcopy($epssrc);
4121: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4122: }
4123: return '';
4124: }
4125:
4126:
4127:
4128: sub resize_image {
4129: my ($height_param, $width_param, $scaling,
4130: $parstack, $safeeval, $depth, $cis) = @_;
4131:
4132: # First apply the scaling...
4133:
4134: $height_param = $height_param * $scaling;
4135: $width_param = $width_param * $scaling;
4136:
4137: #do we have any specified LaTeX size of the picture?
4138: my $toget='TeXwidth';
4139: if ($cis) {
4140: $toget=lc($toget);
4141: }
4142: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4143: $safeeval,$depth,$cis);
4144: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4145: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4146: $safeeval,$depth,$cis);
4147: #do we have any specified web size of the picture?
4148: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4149: $depth,1);
4150: if ($TeXwidth) {
4151: my $old_width_param=$width_param;
4152: if ($TeXwidth=~/(\d+)\s*\%/) {
4153: $width_param = $1*$env{'form.textwidth'}/100;
4154: } else {
4155: $width_param = $TeXwidth;
4156: }
4157: if ($TeXheight) {
4158: $height_param = $TeXheight;
4159: } elsif ($old_width_param) {
4160: $height_param=$TeXwidth/$old_width_param*$height_param;
4161: }
4162: } elsif ($TeXheight) {
4163: $height_param = $TeXheight;
4164: if ($height_param) {
4165: $width_param = $TeXheight/$height_param*$width_param;
4166: }
4167: } elsif ($width) {
4168: my $old_width_param=$width_param;
4169: $width_param = $width*$scaling;
4170: if ($old_width_param) {
4171: $height_param=$width_param/$old_width_param*$height_param;
4172: }
4173: }
4174: if ($width_param > $env{'form.textwidth'}) {
4175: my $old_width_param=$width_param;
4176: $width_param =0.95*$env{'form.textwidth'};
4177: if ($old_width_param) {
4178: $height_param=$width_param/$old_width_param*$height_param;
4179: }
4180: }
4181:
4182: return ($height_param, $width_param);
4183: }
4184:
4185: sub image_size {
4186: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4187:
4188: #size of image from gif/jpg/jpeg/png
4189: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4190: if (-e $ressrc) {
4191: $src = $ressrc;
4192: }
4193: my $image = Image::Magick->new;
4194: my $current_figure = $image->Read($src);
4195: my $width_param = $image->Get('width');
4196: my $height_param = $image->Get('height');
4197: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4198: undef($image);
4199:
4200: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4201: $scaling, $parstack, $safeeval,
4202: $depth, $cis);
4203:
4204: return ($height_param, $width_param);
4205: }
4206:
4207: sub image_width {
4208: my ($height, $width) = &image_size(@_);
4209: return $width;
4210: }
4211: # Not yet 100% sure this is correct in all circumstances..
4212: # due to my uncertainty about mods to image_size.
4213: #
4214: sub image_height {
4215: my ($height, $width) = &image_size(@_);
4216: return $height;
4217: }
4218:
4219: sub get_eps_image {
4220: my ($src)=@_;
4221: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4222:
4223: # In order to prevent the substitution of the alt text, we need to
4224: # be sure the orig_src file is on system now so:
4225:
4226: if (! -e $orig_src) {
4227: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4228: }
4229: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4230: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4231: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4232: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4233: &Apache::lonxml::debug("Filelocation gives: $src");
4234: if (! -e $src) {
4235: &Apache::lonxml::debug("$src does not exist");
4236: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4237: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4238: #if replication failed try to find ps file
4239: $src=~s/\.eps$/\.ps/;
4240: &Apache::lonxml::debug("Now looking for $src");
4241: #if no ps file try to replicate it.
4242: my $didrepcopy = &Apache::lonnet::repcopy($src);
4243: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4244: if ( (not -e $src) ||
4245: ($didrepcopy ne 'ok')) {
4246: &Apache::lonxml::debug("Failed to find or replicate $src");
4247:
4248: #if replication failed try to produce eps file dynamically
4249: $src=~s/\.ps$/\.eps/;
4250: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4251: my $newsrc=$orig_src;
4252: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4253: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4254: print FILE ("$newsrc\n");
4255: close(FILE);
4256: }
4257: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4258: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4259: if ($sext ne "") { # Put the ext. back in to uniquify.
4260: $src =~ s/\.eps$/$sext.eps/;
4261: }
4262:
4263: }
4264:
4265: }
4266: } else {
4267: # If the postscript file has spaces in its name,
4268: # LaTeX will gratuitiously vomit. Therefore
4269: # queue such files for copy with " " replaced by "_".
4270: # printout.pm will know them by their .ps or .eps extensions.
4271: my $newsrc = $orig_src;
4272: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4273: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4274: print FILE "$src\n";
4275: close FILE;
4276: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4277: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4278: }
4279: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4280: $path =~ s/ /\_/g;
4281: $file =~ s/ /\_/g;
4282: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4283: return ($path.'/',$file);
4284: }
4285:
4286: sub eps_generation {
4287: my ($src,$file,$width_param) = @_;
4288: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4289: if (open(my $tmpfile,">>$filename")) {
4290: print $tmpfile "$src\n";
4291: close($tmpfile);
4292: }
4293: my $newsrc = $src;
4294: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4295: $newsrc=~s{/home/httpd/html/res}{};
4296: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4297: $newsrc=~s{/\./}{/};
4298: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4299: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4300: $newsrc=~s{/home/httpd/lonUsers}{};
4301: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4302: }
4303: if ($newsrc=~m{/userfiles/}) {
4304: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4305: } else {
4306: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4307: }
4308: }
4309:
4310: sub file_path {
4311: my $src=shift;
4312: my ($file,$path);
4313: if ($src =~ m!(.*)/([^/]*)$!) {
4314: $file = $2;
4315: $path = $1.'/';
4316: }
4317: return $file,$path;
4318: }
4319:
4320:
4321: sub recalc {
4322: my $argument = shift;
4323: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4324: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4325: my $value=$1;
4326: my $units=$2;
4327: if ($units eq 'cm') {
4328: $value*=10;
4329: } elsif ($units eq 'in') {
4330: $value*=25.4;
4331: } elsif ($units eq 'pc') {
4332: $value*=(25.4*12/72.27);
4333: } elsif ($units eq 'pt') {
4334: $value*=(25.4/72.27);
4335: }
4336: return $value.' mm';
4337: }
4338:
4339: sub LATEX_length {
4340: my $garbage=shift;
4341: $garbage=~s/^\s+$//;
4342: $garbage=~s/^\s+(\S.*)/$1/;#space before
4343: $garbage=~s/(.*\S)\s+$/$1/;#space after
4344: $garbage=~s/(\s)+/$1/;#only one space
4345: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4346: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4347: $garbage=~s/([^\\])\$/$1/g;#$
4348: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4349: $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;
4350: $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;
4351: $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;
4352: $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;
4353: $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;
4354: $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;
4355: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4356: #remove some other LaTeX command
4357: $garbage=~s|\\(\w+)\\|\\|g;
4358: $garbage=~s|\\(\w+)(\s*)|$2|g;
4359: $garbage=~s|\+|11|g;
4360: my $value=length($garbage);
4361: return $value;
4362: }
4363:
4364:
4365: sub align_latex_image {
4366: my ($align, $latex_rendering, $image, $width, $height) = @_;
4367: my $currentstring; # The 1/2 wrapped image.
4368: my $closure; # The closure of the wrappage.
4369:
4370: # if it's none just return it back
4371: if ($latex_rendering eq 'none') {
4372: return ($image,'');
4373: }
4374:
4375: # If there's an alignment specification we need to honor it here.
4376: # For the horizontal alignments, we will also honor the
4377: # value of the latex specfication. The default is parbox,
4378: # and that's used for illegal values too.
4379: #
4380: # Even though we set a default alignment value, the user
4381: # could have given us an illegal value. In that case we
4382: # just use the default alignment of bottom..
4383: $currentstring = '';
4384: if ($align eq "top") {
4385: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4386: $closure = '}';
4387: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4388: my $offset = $height/2;
4389: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4390: $closure = '}';
4391: } elsif ($align eq "left") {
4392: if ($latex_rendering eq "parpic") {
4393: $currentstring .= '\parpic[l]{'.$image;
4394: $closure = '}';
4395: } elsif ($latex_rendering eq "parbox") {
4396: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4397: .$image;
4398: $closure = '\end{minipage}';
4399: } elsif ($latex_rendering eq "wrapfigure"
4400: || $latex_rendering ne 'none') { # wrapfig render
4401: $currentstring .=
4402: '\begin{wrapfigure}{l}{'.$width.'mm}'
4403: .'\scalebox{1.0}{'.$image;
4404: $closure = '}\end{wrapfigure}';
4405: }
4406: } elsif ($align eq "right") {
4407: if ($latex_rendering eq "parpic") {
4408: $currentstring .= '\parpic[r]{'.$image;
4409: $closure = '}';
4410: } elsif ($latex_rendering eq "parbox") {
4411: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4412: .$image;
4413: $closure = '\end{minipage}';
4414: } elsif ($latex_rendering eq "wrapfigure"
4415: || $latex_rendering ne 'none') { # wrapfig render
4416: $currentstring .=
4417: '\begin{wrapfigure}{r}{'.$width.'mm}'
4418: .'\scalebox{1.0}{'.$image;
4419: $closure = '}\end{wrapfigure}';
4420: }
4421: } else { # Bottom is also default.
4422: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4423: $currentstring .= "{$image";
4424: $closure = '}';
4425: }
4426: return ($currentstring, $closure);
4427: }
4428:
4429:
4430: sub is_inside_of {
4431: my ($tagstack, $tag) = @_;
4432: my @stack = @$tagstack;
4433: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4434: if ($stack[$i] eq $tag) {
4435: return 1;
4436: }
4437: }
4438: return 0;
4439: }
4440:
4441:
4442: #
4443: # This sub provides the typical LaTeX prefix matter for tex output:
4444: #
4445: sub latex_header {
4446: my ($mode) = @_;
4447: my $currentstring = '';
4448:
4449: $currentstring .=
4450: "\n% &Apache::lonxml::londefdef \n" .
4451: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4452: if (($env{'form.latex_type'}=~'batchmode') ||
4453: (!$env{'request.role.adv'}) ||
4454: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4455: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4456: '\renewcommand{\deg}{$^{\circ}$}'.
4457: '\usepackage{multirow}'.
4458: '\usepackage{longtable}'.
4459: '\usepackage{textcomp}'.
4460: '\usepackage{makeidx}'.
4461: '\usepackage[dvips]{graphicx}'.
4462: '\usepackage{wrapfig}'.
4463: '\usepackage{picins}'.
4464: '\usepackage[T1]{fontenc}'."\n".
4465: '\usepackage{lmodern}'."\n".
4466: '\usepackage[postscript]{ucs}'."\n".
4467: '\usepackage[utf8x]{inputenc}'."\n".
4468: '\usepackage{pifont}' ."\n".
4469: '\usepackage{latexsym}'."\n".
4470: '\usepackage{epsfig}'.
4471: "\\usepackage{xtab}\n".
4472: "\\usepackage{tabularx}\n".
4473: "\\usepackage{booktabs}\n".
4474: "\\usepackage{array}\n".
4475: "\\usepackage{colortbl}\n".
4476: "\\usepackage{xcolor}\n".
4477: '\usepackage{calc}'.
4478: '\usepackage{amsmath}'.
4479: '\usepackage{soul}',
4480: '\usepackage{amssymb}'.
4481: '\usepackage{amsfonts}'.
4482: '\usepackage{amsthm}'.
4483: '\usepackage{amscd}'
4484: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4485: '\usepackage[T1]{fontenc}'."\n".
4486: '\usepackage{lmodern}'."\n".
4487: '\usepackage[postscript]{ucs}'."\n".
4488: '\usepackage[utf8x]{inputenc}'."\n".
4489: '\usepackage{pifont}' . "\n";
4490:
4491: if($env{'form.pdfFormFields'} eq 'yes') {
4492: $currentstring .= '\usepackage{hyperref}'.
4493: '\usepackage{eforms}'.
4494: '\usepackage{tabularx}';
4495: }
4496:
4497: $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}}'.
4498: '\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}}';
4499: $currentstring .= '\begin{document}';
4500:
4501: return $currentstring;
4502:
4503: }
4504:
4505: =pod
4506:
4507: =head1 NAME
4508:
4509: Apache::londefdef.pm
4510:
4511: =head1 SYNOPSIS
4512:
4513: Tags Default Definition Module
4514:
4515: This is part of the LearningOnline Network with CAPA project
4516: described at http://www.lon-capa.org.
4517:
4518:
4519: =head1 NOTABLE SUBROUTINES
4520:
4521: =over
4522:
4523: =item start_hideweboutput()
4524:
4525: =item end_hideweboutput()
4526:
4527: =item image_replication()
4528:
4529: =item resize_image()
4530:
4531: Get correct sizing parameter for an image given
4532: it's initial ht. and wid. This allows sizing of
4533: images that are generated on-the-fly (e.g. gnuplot)
4534: as well as serving as a utility for image_size.
4535:
4536: Parameter:
4537: height_param
4538: width_param - Initial picture dimensions.
4539: scaling - A scale factor.
4540: parstack, - the current stack of tag attributes
4541: from the xml parser
4542: safeeval, - pointer to the safespace
4543: depth, - from what level in the stack to look for attributes
4544: (assumes -1 if unspecified)
4545: cis - look for attrubutes case insensitively
4546: (assumes false)
4547:
4548: Returns:
4549: height, width - new dimensions.
4550:
4551: =item image_size()
4552:
4553: =item image_width()
4554:
4555: =item image_height()
4556:
4557: =item get_eps_image()
4558:
4559: =item eps_generation()
4560:
4561: =item file_path()
4562:
4563: =item recalc()
4564:
4565: Converts a measurement in to mm from any of
4566: the other valid LaTeX units of measure.
4567: If the units of measure are missing from the
4568: parameter, it is assumed to be in and returned
4569: with mm units of measure
4570:
4571: =item LATEX_length()
4572:
4573: =item align_latex_image()
4574:
4575: Wrap image 'stuff' inside of the LaTeX required to implement
4576: alignment:
4577: align_tex_image(align, latex_rendering, image)
4578: Where:
4579: align - The HTML alignment specification.
4580: latex_rendering - rendering hint for latex.
4581: image - The LaTeX needed to insert the image itsef.
4582: width,height - dimensions of the image.
4583: Returns:
4584: The 1/2 wrapped image and the stuff required to close the
4585: wrappage. This allows e.g. randomlabel to insert more stuff
4586: into the closure.
4587:
4588:
4589: =item is_inside_of($tagstack, $tag)
4590: This sub returns true if the current state of Xml processing is inside of the tag.
4591: Parameters:
4592: tagstack - The tagstack from the parser.
4593: tag - The tag (without the <>'s.).
4594: Sample usage:
4595: if (is_inside_of($tagstack "table")) {
4596: I'm in a table....
4597: }
4598:
4599:
4600:
4601: =back
4602:
4603: =cut
4604:
4605:
4606: 1;
4607: __END__
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