File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.441:
download - view:
text,
annotated -
select for diffs
Thu Nov 29 20:37:13 2012 UTC (11 years, 6 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Consistent interface.
- HTML files uploaded to course's Supplemental content area can be edited,
and any dependencies can be replaced (or uploaded if missing).
- "Course View" button provided when "editing" HTML files uploaded
directly to a course removed; use "Exit Editing" item in Functions instead.
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.441 2012/11/29 20:37:13 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: $header.=&edit_controls();
603: }
604: if ($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: if ($env{'request.course.id'}) {
637: if ($env{'request.filename'} =~ m{/userfiles/supplemental/default|\d+/}) {
638: if (&Apache::lonnet::is_course_upload($env{'request.filename'},
639: $env{'course.'.$env{'request.course.id'}.'.num'},
640: $env{'course.'.$env{'request.course.id'}.'.domain'})) {
641: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
642: ['folderpath','title']);
643: }
644: }
645: }
646: my ($symb,$itemtitle,$displayfile) =
647: &Apache::lonxml::get_courseupload_hierarchy($url,
648: $env{'form.folderpath'},
649: $env{'form.title'});
650: if (($symb ne '') || ($env{'httpref.'.$url} ne '')) {
651: $result .= (' ' x 3).
652: &Apache::lonhtmlcommon::dependencies_button()."\n".
653: &Apache::lonhtmlcommon::dependencycheck_js($symb,
654: $itemtitle,$url,$env{'form.folderpath'},$url)."\n";
655: }
656: }
657: }
658: $result .= '</div>
659: </div>
660: </form>
661: ';
662: return $result;
663: }
664:
665: sub end_body {
666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
667: my $currentstring = &end_p(); # Close off unclosed <p>
668: if ($target eq 'web' || $target eq 'webgrade') {
669: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
670: } elsif ($target eq 'tex') {
671: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
672: }
673: return $currentstring;
674: }
675:
676: # \begin{center} causes a new paragprah spacing that looks odd inside
677: # of a table cell. Same at the end of a \center but with a slightly
678: # larger space .. hence center_correction and center_end_correction.
679: #
680: sub center_correction { return '\vspace*{-6 mm}'; }
681: sub center_end_correction { return '\vspace*{-7 mm}'; }
682:
683: #-- <center> tag (end tag required)
684: sub start_center {
685: my ($target,$token,$tagstack) = @_;
686: my $currentstring = &end_p(); # Close off any prior para.
687: if ($target eq 'web' || $target eq 'webgrade') {
688: $currentstring .= $token->[4];
689: } elsif ($target eq 'tex') {
690: if (&is_inside_of($tagstack, "table")) {
691: $currentstring .= ¢er_correction();
692: }
693: $currentstring .= '\begin{center}';
694: }
695: return $currentstring;
696: }
697:
698: sub end_center {
699: my ($target,$token,$tagstack) = @_;
700: my $currentstring = '';
701: if ($target eq 'web' || $target eq 'webgrade') {
702: $currentstring = $token->[2];
703: } elsif ($target eq 'tex') {
704: $currentstring = '\end{center}';
705: if (&is_inside_of($tagstack, "table")) {
706: $currentstring .= ¢er_end_correction();
707: }
708: }
709: return $currentstring;
710: }
711:
712: #-- <b> tag (end tag required)
713: # NOTE: In TeX mode disables internal <p>
714: sub start_b {
715: my ($target,$token) = @_;
716: my $currentstring = '';
717: if ($target eq 'web' || $target eq 'webgrade') {
718: $currentstring = $token->[4];
719: } elsif ($target eq 'tex') {
720: &disable_para();
721: $currentstring .= '\textbf{';
722: }
723: return $currentstring;
724: }
725:
726: sub end_b {
727: my ($target,$token) = @_;
728: my $currentstring = '';
729: if ($target eq 'web' || $target eq 'webgrade') {
730: $currentstring = $token->[2];
731: } elsif ($target eq 'tex') {
732: &enable_para();
733: $currentstring = '}';
734: }
735: return $currentstring;
736: }
737:
738: #-- <strong> tag (end tag required)
739: # NOTE: in TeX mode disables internal <p>
740: sub start_strong {
741: my ($target,$token) = @_;
742: my $currentstring = '';
743: if ($target eq 'web' || $target eq 'webgrade') {
744: $currentstring = $token->[4];
745: } elsif ($target eq 'tex') {
746: &disable_para();
747: $currentstring = '\textbf{';
748: }
749: return $currentstring;
750: }
751:
752: sub end_strong {
753: my ($target,$token) = @_;
754: my $currentstring = '';
755: if ($target eq 'web' || $target eq 'webgrade') {
756: $currentstring = $token->[2];
757: } elsif ($target eq 'tex') {
758: &enable_para();
759: $currentstring = '}';
760: }
761: return $currentstring;
762: }
763:
764: #-- <h1> tag (end tag required)
765: sub start_h1 {
766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
767: my $currentstring = &end_p(); # Close off any prior para.
768: if ($target eq 'web' || $target eq 'webgrade') {
769: $currentstring .= $token->[4];
770: } elsif ($target eq 'tex') {
771: my $pre;
772: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
773: if ($align eq 'center') {
774: $pre='\begin{center}';
775: } elsif ($align eq 'left') {
776: $pre='\rlap{';
777: } elsif ($align eq 'right') {
778: $pre=' \hfill \llap{';
779: }
780: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
781: if (not defined $TeXsize) {$TeXsize="large";}
782: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
783: } elsif ($target eq 'meta') {
784: $currentstring.='<subject>';
785: &start_output($target);
786: }
787: return $currentstring;
788: }
789:
790: sub end_h1 {
791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
792: my $currentstring = '';
793: if ($target eq 'web' || $target eq 'webgrade') {
794: $currentstring .= $token->[2];
795: } elsif ($target eq 'tex') {
796: my $post='\vskip 0 mm ';
797: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
798: if ($align eq 'center') {
799: $post='\end{center}';
800: } elsif ($align eq 'left') {
801: $post='} \hfill'.'\vskip 0 mm ';
802: } elsif ($align eq 'right') {
803: $post='}'.'\vskip 0 mm ';
804: }
805: $currentstring .= '}}'.$post;
806: } elsif ($target eq 'meta') {
807: &end_output($target);
808: $currentstring='</subject>';
809: }
810: return $currentstring;
811: }
812:
813: #-- <h2> tag
814: sub start_h2 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = &end_p(); # Close off any prior para.
817: if ($target eq 'web' || $target eq 'webgrade') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h2 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h3> tag
857: sub start_h3 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = &end_p(); # Close off any prior para.
860: if ($target eq 'web' || $target eq 'webgrade') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h3 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #-- <h4> tag
900: sub start_h4 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior para.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h4 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = '';
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: my $post='\vskip 0 mm ';
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $post='\end{center}';
932: } elsif ($align eq 'left') {
933: $post='} \hfill'.'\vskip 0 mm ';
934: } elsif ($align eq 'right') {
935: $post='}'.'\vskip 0 mm ';
936: }
937: $currentstring .= '}}'.$post;
938: }
939: return $currentstring;
940: }
941:
942: #-- <h5> tag
943: sub start_h5 {
944: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
945: my $currentstring = &end_p(); # Close off any prior paras.
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: my $pre;
950: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
951: if ($align eq 'center') {
952: $pre='\begin{center}';
953: } elsif ($align eq 'left') {
954: $pre='\rlap{';
955: } elsif ($align eq 'right') {
956: $pre=' \hfill \llap{';
957: }
958: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
959: if (not defined $TeXsize) {$TeXsize="large";}
960: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
961: }
962: return $currentstring;
963: }
964:
965: sub end_h5 {
966: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
967: my $currentstring = '';
968: if ($target eq 'web' || $target eq 'webgrade') {
969: $currentstring .= $token->[2];
970: } elsif ($target eq 'tex') {
971: my $post='\vskip 0 mm ';
972: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
973: if ($align eq 'center') {
974: $post='\end{center}';
975: } elsif ($align eq 'left') {
976: $post='} \hfill'.'\vskip 0 mm ';
977: } elsif ($align eq 'right') {
978: $post='}'.'\vskip 0 mm ';
979: }
980: $currentstring .= '}}'.$post;
981: }
982: return $currentstring;
983: }
984:
985: #-- <h6> tag
986: sub start_h6 {
987: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
988: my $currentstring = &end_p(); # Close off any prior paras.
989: if ($target eq 'web' || $target eq 'webgrade') {
990: $currentstring .= $token->[4];
991: } elsif ($target eq 'tex') {
992: my $pre;
993: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
994: if ($align eq 'center') {
995: $pre='\begin{center}';
996: } elsif ($align eq 'left') {
997: $pre='\rlap{';
998: } elsif ($align eq 'right') {
999: $pre=' \hfill \llap{';
1000: }
1001: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1002: if (not defined $TeXsize) {$TeXsize="large";}
1003: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1004: }
1005: return $currentstring;
1006: }
1007:
1008: sub end_h6 {
1009: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1010: my $currentstring = '';
1011: if ($target eq 'web' || $target eq 'webgrade') {
1012: $currentstring .= $token->[2];
1013: } elsif ($target eq 'tex') {
1014: my $post='\vskip 0 mm ';
1015: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1016: if ($align eq 'center') {
1017: $post='\end{center}';
1018: } elsif ($align eq 'left') {
1019: $post='} \hfill'.'\vskip 0 mm ';
1020: } elsif ($align eq 'right') {
1021: $post='}'.'\vskip 0 mm ';
1022: }
1023: $currentstring .= '}}'.$post;
1024: }
1025: return $currentstring;
1026: }
1027:
1028: #--- <cite> tag (end tag required)
1029: sub start_cite {
1030: my ($target,$token) = @_;
1031: my $currentstring = '';
1032: if ($target eq 'web' || $target eq 'webgrade') {
1033: $currentstring .= $token->[4];
1034: } elsif ($target eq 'tex') {
1035: $currentstring .= '\textit{';
1036: }
1037: return $currentstring;
1038: }
1039:
1040: sub end_cite {
1041: my ($target,$token) = @_;
1042: my $currentstring = '';
1043: if ($target eq 'web' || $target eq 'webgrade') {
1044: $currentstring .= $token->[2];
1045: } elsif ($target eq 'tex') {
1046: $currentstring .= '}';
1047: }
1048: return $currentstring;
1049: }
1050:
1051: #-- <i> tag (end tag required)
1052: sub start_i {
1053: my ($target,$token) = @_;
1054: my $currentstring = '';
1055: if ($target eq 'web' || $target eq 'webgrade') {
1056: $currentstring .= $token->[4];
1057: } elsif ($target eq 'tex') {
1058: $currentstring .= '\textit{';
1059: }
1060: return $currentstring;
1061: }
1062:
1063: sub end_i {
1064: my ($target,$token) = @_;
1065: my $currentstring = '';
1066: if ($target eq 'web' || $target eq 'webgrade') {
1067: $currentstring .= $token->[2];
1068: } elsif ($target eq 'tex') {
1069: $currentstring .= '}';
1070: }
1071: return $currentstring;
1072: }
1073:
1074: #-- <address> tag (end tag required)
1075: sub start_address {
1076: my ($target,$token) = @_;
1077: my $currentstring = '';
1078: if ($target eq 'web' || $target eq 'webgrade') {
1079: $currentstring .= $token->[4];
1080: } elsif ($target eq 'tex') {
1081: $currentstring .= '\textit{';
1082: }
1083: return $currentstring;
1084: }
1085:
1086: sub end_address {
1087: my ($target,$token) = @_;
1088: my $currentstring = '';
1089: if ($target eq 'web' || $target eq 'webgrade') {
1090: $currentstring .= $token->[2];
1091: } elsif ($target eq 'tex') {
1092: $currentstring .= '}';
1093: }
1094: return $currentstring;
1095: }
1096:
1097: #-- <dfn> tag (end tag required)
1098: sub start_dfn {
1099: my ($target,$token) = @_;
1100: my $currentstring = '';
1101: if ($target eq 'web' || $target eq 'webgrade') {
1102: $currentstring .= $token->[4];
1103: } elsif ($target eq 'tex') {
1104: $currentstring .= '\textit{';
1105: }
1106: return $currentstring;
1107: }
1108:
1109: sub end_dfn {
1110: my ($target,$token) = @_;
1111: my $currentstring = '';
1112: if ($target eq 'web' || $target eq 'webgrade') {
1113: $currentstring .= $token->[2];
1114: } elsif ($target eq 'tex') {
1115: $currentstring .= '}';
1116: }
1117: return $currentstring;
1118: }
1119:
1120: #-- <tt> tag (end tag required)
1121: sub start_tt {
1122: my ($target,$token) = @_;
1123: my $currentstring = '';
1124: if ($target eq 'web' || $target eq 'webgrade') {
1125: $currentstring .= $token->[4];
1126: } elsif ($target eq 'tex') {
1127: $currentstring .= '\texttt{';
1128: }
1129: return $currentstring;
1130: }
1131:
1132: sub end_tt {
1133: my ($target,$token) = @_;
1134: my $currentstring = '';
1135: if ($target eq 'web' || $target eq 'webgrade') {
1136: $currentstring .= $token->[2];
1137: } elsif ($target eq 'tex') {
1138: $currentstring .= '}';
1139: }
1140: return $currentstring;
1141: }
1142:
1143: #-- <kbd> tag (end tag required)
1144: sub start_kbd {
1145: my ($target,$token) = @_;
1146: my $currentstring = '';
1147: if ($target eq 'web' || $target eq 'webgrade') {
1148: $currentstring .= $token->[4];
1149: } elsif ($target eq 'tex') {
1150: $currentstring .= '\texttt{';
1151: }
1152: return $currentstring;
1153: }
1154:
1155: sub end_kbd {
1156: my ($target,$token) = @_;
1157: my $currentstring = '';
1158: if ($target eq 'web' || $target eq 'webgrade') {
1159: $currentstring .= $token->[2];
1160: } elsif ($target eq 'tex') {
1161: $currentstring .= '}';
1162: }
1163: return $currentstring;
1164: }
1165:
1166: #-- <code> tag (end tag required)
1167: sub start_code {
1168: my ($target,$token) = @_;
1169: my $currentstring = '';
1170: if ($target eq 'web' || $target eq 'webgrade') {
1171: $currentstring .= $token->[4];
1172: } elsif ($target eq 'tex') {
1173: $currentstring .= '\texttt{';
1174: }
1175: return $currentstring;
1176: }
1177:
1178: sub end_code {
1179: my ($target,$token) = @_;
1180: my $currentstring = '';
1181: if ($target eq 'web' || $target eq 'webgrade') {
1182: $currentstring .= $token->[2];
1183: } elsif ($target eq 'tex') {
1184: $currentstring .= '}';
1185: }
1186: return $currentstring;
1187: }
1188:
1189: #-- <em> tag (end tag required)
1190: sub start_em {
1191: my ($target,$token) = @_;
1192: my $currentstring = '';
1193: if ($target eq 'web' || $target eq 'webgrade') {
1194: $currentstring .= $token->[4];
1195: } elsif ($target eq 'tex') {
1196: $currentstring .= '\emph{';
1197: }
1198: return $currentstring;
1199: }
1200:
1201: sub end_em {
1202: my ($target,$token) = @_;
1203: my $currentstring = '';
1204: if ($target eq 'web' || $target eq 'webgrade') {
1205: $currentstring .= $token->[2];
1206: } elsif ($target eq 'tex') {
1207: $currentstring .= '}';
1208: }
1209: return $currentstring;
1210: }
1211:
1212: #-- <q> tag (end tag required)
1213: sub start_q {
1214: my ($target,$token) = @_;
1215: my $currentstring = '';
1216: if ($target eq 'web' || $target eq 'webgrade') {
1217: $currentstring .= $token->[4];
1218: } elsif ($target eq 'tex') {
1219: $currentstring .= '\emph{';
1220: }
1221: return $currentstring;
1222: }
1223:
1224: sub end_q {
1225: my ($target,$token) = @_;
1226: my $currentstring = '';
1227: if ($target eq 'web' || $target eq 'webgrade') {
1228: $currentstring .= $token->[2];
1229: } elsif ($target eq 'tex') {
1230: $currentstring .= '}';
1231: }
1232: return $currentstring;
1233: }
1234:
1235: # <p> is a bit strange since it does not require a closing </p>
1236: # However in latex, we must often output closing stuff to end
1237: # environments and {}'s etc. Therefore we do all the work
1238: # of figuring out the ending strings in the start tag processing,
1239: # and provide a mechanism to output the stop text external
1240: # to tag processing.
1241: #
1242: {
1243:
1244: my $closing_string = ''; # String required to close <p>
1245:
1246: # Some tags are <p> fragile meaning that <p> inside of them
1247: # does not work within TeX mode. This is managed via the
1248: # counter below:
1249: #
1250:
1251: my $para_disabled = 0;
1252:
1253: sub disable_para {
1254: $para_disabled++;
1255: }
1256: sub enable_para {
1257: $para_disabled--;
1258: }
1259:
1260:
1261: #-- <p> tag (end tag optional)
1262: #optional attribute - align="center|left|right"
1263: sub start_p {
1264: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1265: my $currentstring = '';
1266: if ($target eq 'web' || $target eq 'webgrade') {
1267: $currentstring .= &end_p(); # close off prior para if in progress.
1268: $currentstring .= $token->[4];
1269: if (! ($currentstring =~ /\//)) {
1270: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1271: }
1272: } elsif ($target eq 'tex' && !$para_disabled) {
1273:
1274: $currentstring .= &end_p(); # close off prior para if in progress.
1275: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1276: if ($align eq 'center') {
1277: $currentstring .='\begin{center}\par ';
1278: $closing_string = '\end{center}';
1279: if (&is_inside_of($tagstack, "table")) {
1280: $currentstring = ¢er_correction().$currentstring;
1281: }
1282: } elsif ($align eq 'right') {
1283: $currentstring.="\n".'{\flushright ';
1284: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1285: $closing_string= "}\n";
1286: } elsif ($align eq 'left') {
1287: $currentstring.= "\n".'{\flushleft ';
1288: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1289: $closing_string = "}\n";
1290: } else {
1291: $currentstring.='\par ';
1292: if (&is_inside_of($tagstack, 'table')) {
1293: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1294: } else {
1295: $closing_string = '\strut\\\\\strut ';
1296: }
1297: }
1298:
1299: }
1300: return $currentstring;
1301: }
1302: #
1303: # End paragraph processing just requires that we output the
1304: # closing string that was saved and blank it.
1305: sub end_p {
1306: # Note only 'tex' mode uses disable_para and enable_para
1307: # so we don't need to know the target in the check below:
1308:
1309: if (!$para_disabled) {
1310: my $current_string = $closing_string;
1311: $closing_string = ''; # Not in a para anymore.
1312: return $current_string;
1313: } else {
1314: return '';
1315: }
1316:
1317: }
1318: }
1319: #-- <br> tag (end tag forbidden)
1320: sub start_br {
1321: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1322: my $currentstring = '';
1323: if ($target eq 'web' || $target eq 'webgrade') {
1324: $currentstring .= $token->[4];
1325: } elsif ($target eq 'tex') {
1326: my @tempo=@$tagstack;
1327: my $signal=0;
1328: # Not going to factor this to is_inside_of since that would require
1329: # multiple stack traversals.
1330: #
1331: for (my $i=$#tempo;$i>=0;$i--) {
1332: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1333: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1334: $signal=1;
1335: }
1336: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1337: $signal = 1;
1338: }
1339: }
1340: if ($signal != 1) {
1341: $currentstring .= '\strut \\\\ \strut ';
1342: }
1343:
1344: }
1345: return $currentstring;
1346: }
1347:
1348: sub end_br {
1349: my ($target,$token) = @_;
1350: my $currentstring = '';
1351: if ($target eq 'web' || $target eq 'webgrade') {
1352: $currentstring .= $token->[2];
1353: }
1354: return $currentstring;
1355: }
1356:
1357: #-- <big> tag (end tag required)
1358: sub start_big {
1359: my ($target,$token) = @_;
1360: my $currentstring = '';
1361: if ($target eq 'web' || $target eq 'webgrade') {
1362: $currentstring .= $token->[4];
1363: } elsif ($target eq 'tex') {
1364: $currentstring .= '{\large ';
1365: }
1366: return $currentstring;
1367: }
1368:
1369: sub end_big {
1370: my ($target,$token) = @_;
1371: my $currentstring = '';
1372: if ($target eq 'web' || $target eq 'webgrade') {
1373: $currentstring .= $token->[2];
1374: } elsif ($target eq 'tex') {
1375: $currentstring .= '}';
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <small> tag (end tag required)
1381: sub start_small {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: $currentstring .= '{\footnotesize ';
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_small {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: } elsif ($target eq 'tex') {
1398: $currentstring .= '}';
1399: }
1400: return $currentstring;
1401: }
1402:
1403: #-- <basefont> tag (end tag forbidden)
1404: sub start_basefont {
1405: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1406: my $currentstring = '';
1407: if ($target eq 'web' || $target eq 'webgrade') {
1408: $currentstring = $token->[4];
1409: } elsif ($target eq 'tex') {
1410: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1411: if (defined $basesize) {
1412: $currentstring = '{\\'.$basesize.' ';
1413: }
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_basefont {
1419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring = $token->[4];
1423: } elsif ($target eq 'tex') {
1424: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1425: if (defined $basesize) {
1426: $currentstring = '}';
1427: }
1428: }
1429: return $currentstring;
1430: }
1431:
1432: #-- <font> tag (end tag required)
1433: sub start_font {
1434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1435: my $currentstring = '';
1436: if ($target eq 'web' || $target eq 'webgrade') {
1437: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1438: $currentstring = $token->[4];
1439: } elsif ($target eq 'tex') {
1440: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1441: if (defined $fontsize) {
1442: $currentstring = '{\\'.$fontsize.' ';
1443: }
1444: }
1445: return $currentstring;
1446: }
1447:
1448: sub end_font {
1449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1450: my $currentstring = '';
1451: if ($target eq 'web' || $target eq 'webgrade') {
1452: $currentstring = $token->[2];
1453: } elsif ($target eq 'tex') {
1454: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1455: if (defined $fontsize) {
1456: $currentstring = '}';
1457: }
1458: }
1459: return $currentstring;
1460: }
1461:
1462: #-- <strike> tag (end tag required)
1463: sub start_strike {
1464: my ($target,$token) = @_;
1465: my $currentstring = '';
1466: if ($target eq 'web' || $target eq 'webgrade') {
1467: $currentstring .= $token->[4];
1468: } elsif ($target eq 'tex') {
1469: &Apache::lonxml::startredirection();
1470: }
1471: return $currentstring;
1472: }
1473:
1474: sub end_strike {
1475: my ($target,$token) = @_;
1476: my $currentstring = '';
1477: if ($target eq 'web' || $target eq 'webgrade') {
1478: $currentstring .= $token->[2];
1479: } elsif ($target eq 'tex') {
1480: $currentstring=&Apache::lonxml::endredirection();
1481: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1482: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1483: $currentstring=~s/(\S)\s*$/$1\}/;
1484: }
1485: return $currentstring;
1486: }
1487:
1488: #-- <s> tag (end tag required)
1489: sub start_s {
1490: my ($target,$token) = @_;
1491: my $currentstring = '';
1492: if ($target eq 'web' || $target eq 'webgrade') {
1493: $currentstring .= $token->[4];
1494: } elsif ($target eq 'tex') {
1495: &Apache::lonxml::startredirection();
1496: }
1497: return $currentstring;
1498: }
1499:
1500: sub end_s {
1501: my ($target,$token) = @_;
1502: my $currentstring = '';
1503: if ($target eq 'web' || $target eq 'webgrade') {
1504: $currentstring .= $token->[2];
1505: } elsif ($target eq 'tex') {
1506: $currentstring=&Apache::lonxml::endredirection();
1507: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1508: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1509: $currentstring=~s/(\S)\s*$/$1\}/;
1510: }
1511: return $currentstring;
1512: }
1513:
1514: #-- <sub> tag (end tag required)
1515: sub start_sub {
1516: my ($target,$token) = @_;
1517: my $currentstring = '';
1518: if ($target eq 'web' || $target eq 'webgrade') {
1519: $currentstring .= $token->[4];
1520: } elsif ($target eq 'tex') {
1521: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1522: }
1523: return $currentstring;
1524: }
1525:
1526: sub end_sub {
1527: my ($target,$token) = @_;
1528: my $currentstring = '';
1529: if ($target eq 'web' || $target eq 'webgrade') {
1530: $currentstring .= $token->[2];
1531: } elsif ($target eq 'tex') {
1532: $currentstring .= '}}';
1533: }
1534: return $currentstring;
1535: }
1536:
1537: #-- <sup> tag (end tag required)
1538: sub start_sup {
1539: my ($target,$token) = @_;
1540: my $currentstring = '';
1541: if ($target eq 'web' || $target eq 'webgrade') {
1542: $currentstring .= $token->[4];
1543: } elsif ($target eq 'tex') {
1544: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1545: }
1546: return $currentstring;
1547: }
1548:
1549: sub end_sup {
1550: my ($target,$token) = @_;
1551: my $currentstring = '';
1552: if ($target eq 'web' || $target eq 'webgrade') {
1553: $currentstring .= $token->[2];
1554: } elsif ($target eq 'tex') {
1555: $currentstring .= '}}';
1556: }
1557: return $currentstring;
1558: }
1559:
1560: #-- <hr> tag (end tag forbidden)
1561: sub start_hr {
1562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1563: my $currentstring = &end_p(); # End enclosing para.
1564: if ($target eq 'web' || $target eq 'webgrade') {
1565: $currentstring .= $token->[4];
1566: } elsif ($target eq 'tex') {
1567:
1568: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1569: #
1570: my $restart_sub = 0;
1571: my $restart_sup = 0;
1572:
1573: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1574: # using the start_ stop_ functions.. those tags only care about
1575: # $target.
1576:
1577: if (&is_inside_of($tagstack, "sub")) {
1578: $restart_sub = 1;
1579: $currentstring .= &end_sub($target, $token, $tagstack,
1580: $parstack, $parser, $safeeval);
1581: }
1582: if (&is_inside_of($tagstack, "sup")) {
1583: $restart_sup = 1;
1584: $currentstring .= &end_sup($target, $token, $tagstack,
1585: $parstack, $parser, $safeeval);
1586: }
1587:
1588: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1589: if (defined $LaTeXwidth) {
1590: if ($LaTeXwidth=~/^%/) {
1591: substr($LaTeXwidth,0,1)='';
1592: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1593: }
1594: } else {
1595: $LaTeXwidth ='0.9\textwidth';
1596: }
1597: my ($pre,$post);
1598: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1599: if (($align eq 'center') || (not defined $align)) {
1600: $pre=''; $post='';
1601: } elsif ($align eq 'left') {
1602: $pre='\rlap{'; $post='} \hfill';
1603: } elsif ($align eq 'right') {
1604: $pre=' \hfill \llap{'; $post='}';
1605: }
1606: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1607: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1608: # Turn stuff back on that we can't be inside of.
1609:
1610: if ($restart_sub) {
1611: $currentstring .= &start_sub($target, $token, $tagstack,
1612: $parstack, $parser, $safeeval);
1613: }
1614: if ($restart_sup) {
1615: $currentstring .= &start_sup($target, $token, $tagstack,
1616: $parstack, $parser, $safeeval);
1617: }
1618: }
1619: return $currentstring;
1620: }
1621:
1622: sub end_hr {
1623: my ($target,$token) = @_;
1624: my $currentstring = '';
1625: if ($target eq 'web' || $target eq 'webgrade') {
1626: $currentstring .= $token->[2];
1627: }
1628: return $currentstring;
1629: }
1630:
1631: #-- <div> tag (end tag required)
1632: {
1633:
1634: # Since div can be nested, the stack below is used
1635: # in 'tex' mode to store the ending strings
1636: # for the div stack.
1637:
1638: my @div_end_stack;
1639:
1640: sub start_div {
1641: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1642: my $currentstring = &end_p(); # Close enclosing para.
1643: if ($target eq 'web' || $target eq 'webgrade') {
1644: $currentstring .= $token->[4];
1645: }
1646: if ($target eq 'tex') {
1647: # 4 possible alignments: left, right, center, and -missing-.
1648: # If inside a table row, we must let the table logic
1649: # do the alignment, however.
1650: #
1651:
1652: my $endstring = '';
1653:
1654: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1655: $safeeval, undef, 1));
1656: if ($align eq 'center') {
1657: $currentstring .= '\begin{center}';
1658: $endstring = '\end{center}';
1659: if (&is_inside_of($tagstack, "table")) {
1660: $currentstring = ¢er_correction().$currentstring;
1661: $endstring .= ¢er_end_correction();
1662: }
1663: }
1664: elsif ($align eq 'right') {
1665: $currentstring .= '\begin{flushright}';
1666: $endstring .= '\end{flushright}';
1667: } elsif ($align eq 'left') {
1668: $currentstring .= '\begin{flushleft}';
1669: $endstring = '\end{flushleft}';
1670: } else {
1671:
1672: }
1673: $currentstring .= "\n"; # For human readability.
1674: $endstring = "\n$endstring\n"; # For human readability
1675: push(@div_end_stack, $endstring);
1676: }
1677: return $currentstring;
1678: }
1679:
1680: sub end_div {
1681: my ($target,$token) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web' || $target eq 'webgrade') {
1684: $currentstring .= $token->[2];
1685: }
1686: if ($target eq 'tex') {
1687: my $endstring = pop @div_end_stack;
1688: $currentstring .= $endstring;
1689: }
1690: return $currentstring;
1691: }
1692: }
1693:
1694: #-- <a> tag (end tag required)
1695: sub start_a {
1696: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1697: my $currentstring = '';
1698: if ($target eq 'web' || $target eq 'webgrade') {
1699: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1700: undef,1);
1701: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1702: if ($href =~ /\S/) {
1703: if ($href !~ m{^https?://}) {
1704: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1705: my $linkurl;
1706: if ($href =~ m{^/uploaded/}) {
1707: $linkurl = $href;
1708: } elsif ($href =~ m{^[^/]}) {
1709: my $path = $url;
1710: $path =~ s{[^/]*$}{};
1711: $linkurl = $path.$href;
1712: }
1713: if ($linkurl =~ m{^/uploaded/}) {
1714: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1715: if (&Apache::lonnet::is_on_map($url)) {
1716: &Apache::lonxml::extlink($linkurl);
1717: }
1718: }
1719: }
1720: }
1721: }
1722: }
1723: return $currentstring;
1724: }
1725:
1726: sub end_a {
1727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1728: my $currentstring = '';
1729: if ($target eq 'web' || $target eq 'webgrade') {
1730: $currentstring .= $token->[2];
1731: }
1732: if ($target eq 'tex') {
1733: my $href =
1734: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1735: my $name =
1736: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1737: my $uriprint =
1738: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1739: my $anchorprint =
1740: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1741: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1742: $href =~ s/([^\\])%/$1\\\%/g;
1743: # Substitute special symbols... and allow line breaks at each /
1744: #
1745: $href = &Apache::lonxml::latex_special_symbols($href);
1746: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1747: $currentstring .= ' ({\tt URI:'.$href.'})';
1748: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1749: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1750: } else {
1751: $currentstring.='';
1752: }
1753: }
1754: return $currentstring;
1755: }
1756:
1757: #-- <li> tag (end tag optional)
1758: sub start_li {
1759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1760: my $currentstring = '';
1761: if ($target eq 'web' || $target eq 'webgrade') {
1762: $currentstring = $token->[4];
1763: } elsif ($target eq 'tex') {
1764: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1765: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1766: #FIXME need to support types i and I
1767: if ($type=~/disc/) {
1768: $currentstring .= ' \item[$\bullet$] ';
1769: } elsif ($type=~/circle/) {
1770: $currentstring .= ' \item[$\circ$] ';
1771: } elsif ($type=~/square/) {
1772: $currentstring .= ' \item[$\diamond$] ';
1773: } elsif ($type eq '1') {
1774: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1775: } elsif ($type eq 'A') {
1776: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1777: } elsif ($type eq 'a') {
1778: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1779: } elsif ($value ne '') {
1780: $currentstring .= ' \item['.$value.'] ';
1781: } else {
1782: $currentstring .= ' \item ';
1783: }
1784: $Apache::londefdef::list_index++;
1785: }
1786: return $currentstring;
1787: }
1788:
1789: sub end_li {
1790: my ($target,$token) = @_;
1791: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1792: if ($target eq 'web' || $target eq 'webgrade') {
1793: $currentstring .= $token->[2];
1794: }
1795: return $currentstring;
1796: }
1797:
1798: #-- <u> tag (end tag required)
1799: sub start_u {
1800: my ($target,$token) = @_;
1801: my $currentstring = '';
1802: if ($target eq 'web' || $target eq 'webgrade') {
1803: $currentstring .= $token->[4];
1804: } elsif ($target eq 'tex') {
1805: &Apache::lonxml::startredirection();
1806: }
1807: return $currentstring;
1808: }
1809:
1810: sub end_u {
1811: my ($target,$token) = @_;
1812: my $currentstring = '';
1813: if ($target eq 'web' || $target eq 'webgrade') {
1814: $currentstring .= $token->[2];
1815: } elsif ($target eq 'tex') {
1816: $currentstring=&Apache::lonxml::endredirection();
1817: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1818: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1819: $currentstring=~s/(\S)\s*$/$1\}/;
1820: }
1821: return $currentstring;
1822: }
1823:
1824: #-- <ul> tag (end tag required)
1825: sub start_ul {
1826: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1827: my $currentstring = &end_p(); # Close off enclosing list.
1828: if ($target eq 'web' || $target eq 'webgrade') {
1829: $currentstring .= $token->[4];
1830: } elsif ($target eq 'tex') {
1831: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1832: $Apache::londefdef::list_index=0;
1833: if ($TeXtype eq 'disc') {
1834: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1835: '\renewcommand{\labelitemii}{$\bullet$}'.
1836: '\renewcommand{\labelitemiii}{$\bullet$}'.
1837: '\renewcommand{\labelitemiv}{$\bullet$}';
1838: } elsif ($TeXtype eq 'circle') {
1839: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1840: '\renewcommand{\labelitemii}{$\circ$}'.
1841: '\renewcommand{\labelitemiii}{$\circ$}'.
1842: '\renewcommand{\labelitemiv}{$\circ$}';
1843: } elsif ($TeXtype eq 'square') {
1844: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1845: '\renewcommand{\labelitemii}{$\diamond$}'.
1846: '\renewcommand{\labelitemiii}{$\diamond$}'.
1847: '\renewcommand{\labelitemiv}{$\diamond$}';
1848: }
1849: $currentstring .= '\strut \begin{itemize}';
1850: }
1851: return $currentstring;
1852: }
1853:
1854: sub end_ul {
1855: my ($target,$token) = @_;
1856: my $currentstring = '';
1857: if ($target eq 'web' || $target eq 'webgrade') {
1858: $currentstring = $token->[2];
1859: } elsif ($target eq 'tex') {
1860: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1861: '\renewcommand{\labelitemii}{$\bullet$}'.
1862: '\renewcommand{\labelitemiii}{$\bullet$}'.
1863: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1864: }
1865: return $currentstring;
1866: }
1867:
1868: #-- <menu> tag (end tag required)
1869: sub start_menu {
1870: my ($target,$token) = @_;
1871: my $currentstring = '';
1872: if ($target eq 'web' || $target eq 'webgrade') {
1873: $currentstring = $token->[4];
1874: } elsif ($target eq 'tex') {
1875: $currentstring = " \\begin{itemize} ";
1876: }
1877: return $currentstring;
1878: }
1879:
1880: sub end_menu {
1881: my ($target,$token) = @_;
1882: my $currentstring = '';
1883: if ($target eq 'web' || $target eq 'webgrade') {
1884: $currentstring = $token->[2];
1885: } elsif ($target eq 'tex') {
1886: $currentstring = " \\end{itemize}";
1887: }
1888: return $currentstring;
1889: }
1890:
1891: #-- <dir> tag (end tag required)
1892: sub start_dir {
1893: my ($target,$token) = @_;
1894: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1895: if ($target eq 'web' || $target eq 'webgrade') {
1896: $currentstring .= $token->[4];
1897: } elsif ($target eq 'tex') {
1898: $currentstring .= " \\begin{itemize} ";
1899: }
1900: return $currentstring;
1901: }
1902:
1903: sub end_dir {
1904: my ($target,$token) = @_;
1905: my $currentstring = '';
1906: if ($target eq 'web' || $target eq 'webgrade') {
1907: $currentstring = $token->[2];
1908: } elsif ($target eq 'tex') {
1909: $currentstring = " \\end{itemize}";
1910: }
1911: return $currentstring;
1912: }
1913:
1914: #-- <ol> tag (end tag required)
1915: sub start_ol {
1916: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1917: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1918: if ($target eq 'web' || $target eq 'webgrade') {
1919: $currentstring .= $token->[4];
1920: } elsif ($target eq 'tex') {
1921: $Apache::londefdef::list_index=0;
1922: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1923: if ($type eq '1') {
1924: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1925: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1926: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1927: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1928: } elsif ($type eq 'A') {
1929: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1930: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1931: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1932: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1933: } elsif ($type eq 'a') {
1934: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1935: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1936: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1937: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1938: } elsif ($type eq 'i') {
1939: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1940: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1941: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1942: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1943: } elsif ($type eq 'I') {
1944: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1945: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1946: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1947: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1948: }
1949: $currentstring .= '\strut \begin{enumerate}';
1950: }
1951: return $currentstring;
1952: }
1953:
1954: sub end_ol {
1955: my ($target,$token) = @_;
1956: my $currentstring = '';
1957: if ($target eq 'web' || $target eq 'webgrade') {
1958: $currentstring = $token->[2];
1959: } elsif ($target eq 'tex') {
1960: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1961: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1962: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1963: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1964: }
1965: return $currentstring;
1966: }
1967:
1968: #-- <dl> tag (end tag required)
1969: sub start_dl {
1970: my ($target,$token) = @_;
1971: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1972: if ($target eq 'web' || $target eq 'webgrade') {
1973: $currentstring .= $token->[4];
1974: } elsif ($target eq 'tex') {
1975: $currentstring .= '\begin{description}';
1976: $Apache::londefdef::DL++;
1977: push(@Apache::londefdef::description,[]);
1978: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1979: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1980: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1981: }
1982: return $currentstring;
1983: }
1984:
1985: sub end_dl {
1986: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1987: my $currentstring = '';
1988: if ($target eq 'web' || $target eq 'webgrade') {
1989: $currentstring = $token->[2];
1990: } elsif ($target eq 'tex') {
1991: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1992: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1993: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1994: $currentstring.=' '.$element.' ';
1995: }
1996: pop(@Apache::londefdef::description);
1997: $currentstring.='\end{description}';
1998: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1999: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
2000: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
2001: $Apache::londefdef::DL--;
2002: }
2003: return $currentstring;
2004: }
2005:
2006: #-- <dt> tag (end tag optional)
2007: sub start_dt {
2008: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2009: my $currentstring='';
2010: if ($target eq 'web' || $target eq 'webgrade') {
2011: $currentstring = $token->[4];
2012: } elsif ($target eq 'tex') {
2013: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2014: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2015: &Apache::lonxml::startredirection();
2016: $Apache::londefdef::DT[-1]++;
2017: $Apache::londefdef::seenDT[-1]=1;
2018: }
2019: return $currentstring;
2020: }
2021:
2022: sub end_dt {
2023: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2024: my $currentstring = '';
2025: if ($target eq 'web' || $target eq 'webgrade') {
2026: $currentstring = $token->[2];
2027: } elsif ($target eq 'tex') {
2028: if ($Apache::londefdef::DT[-1]) {
2029: my $data=&item_cleanup();
2030: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2031: $Apache::londefdef::DT[-1]--;
2032: }
2033: }
2034: return $currentstring;
2035: }
2036:
2037: sub item_cleanup {
2038: my $item=&Apache::lonxml::endredirection();
2039: $item=~s/\\begin{center}//g;
2040: $item=~s/\\end{center}//g;
2041: return $item;
2042: }
2043:
2044: #-- <dd> tag (end tag optional)
2045: sub start_dd {
2046: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2047: my $currentstring = '';
2048: if ($target eq 'web' || $target eq 'webgrade') {
2049: $currentstring = $token->[4];
2050: } elsif ($target eq 'tex') {
2051: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2052: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2053: if (!$Apache::londefdef::seenDT[-1]) {
2054: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2055: }
2056: push(@{$Apache::londefdef::description[-1]},'');
2057: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2058: $Apache::londefdef::DD[-1]++;
2059: &Apache::lonxml::startredirection();
2060: }
2061: return $currentstring;
2062: }
2063:
2064: sub end_dd {
2065: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2066: my $currentstring = '';
2067: if ($target eq 'web' || $target eq 'webgrade') {
2068: $currentstring = $token->[2];
2069: } elsif ($target eq 'tex') {
2070: $Apache::londefdef::description[-1]->[-1].=
2071: &Apache::lonxml::endredirection().' \vskip 0mm ';
2072: $Apache::londefdef::DD[-1]--;
2073: }
2074: return $currentstring;
2075: }
2076:
2077: #-- <table> tag (end tag required)
2078: # <table> also ends any prior <p> that is not closed.
2079: # but, unless I allow <p>'s to nest, that's the
2080: # only way I could think of to allow <p> in
2081: # <tr> <th> bodies
2082: #
2083: #list of supported attributes: border,width,TeXwidth,TeXtheme
2084: # align
2085: sub start_table {
2086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2087: my $textwidth = '';
2088: my $currentstring = &end_p();
2089: if ($target eq 'web' || $target eq 'webgrade') {
2090: $currentstring .= $token->[4];
2091: } elsif ($target eq 'tex') {
2092: &disable_para(); # Can't have paras in a table.
2093:
2094: # Get the parameters that we can do something about:
2095:
2096: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2097: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2098: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2099: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2100: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2101:
2102: # The only thing that needs any figuring out is the width.. and then only if it is
2103: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2104: #
2105:
2106: my $table = new Apache::lontable();
2107: if ((defined $border) && ($border > 0)) {
2108: # &Apache::lonnet::logthis("Turning on table borders: $border");
2109: $table->table_border(1);
2110: if (!defined $cell_border) {
2111: $table->cell_border(1); # Default for rules is all if rules not defined.
2112: }
2113: }
2114:
2115: if ((defined $cell_border)) {
2116: if ($cell_border eq 'all') {
2117: $table->cell_border(1);
2118: } elsif ($cell_border eq 'rows') {
2119: $table->cell_border(2);
2120: } elsif ($cell_border eq 'cols') {
2121: $table->cell_border(3);
2122: } elsif($cell_border eq 'groups') {
2123: $table->cell_border(4);
2124: } else {
2125: $table->cell_border(0);
2126: }
2127: }
2128: if (defined $theme) {
2129: $table->theme($theme);
2130: }
2131: if (defined $align) {
2132: $table->alignment($align);
2133: }
2134:
2135: # Missing width is most of page width
2136:
2137: if (!(defined $width)) {
2138: $width = '70%';
2139: }
2140:
2141: # If a percentage, need to calculate what this means in terms of
2142: # page width:
2143:
2144: if ($width =~ /%$/) {
2145: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2146: $width =~ s/%//;
2147: $width = $width * $textwidth / 100.0;
2148: $width .= " mm";
2149: $table->width($width);
2150: }
2151:
2152: push(@Apache::londefdef::table, $table);
2153: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2154:
2155: }
2156: return $currentstring;
2157: }
2158:
2159: sub end_table {
2160: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2161: my $currentstring = '';
2162: if ($target eq 'web' || $target eq 'webgrade') {
2163: $currentstring = $token->[2];
2164: } elsif ($target eq 'tex') {
2165:
2166:
2167: my $table = pop(@Apache::londefdef::table);
2168: my $t = $table->generate();
2169: # &Apache::lonnet::logthis("Generating string");
2170: $currentstring = $t->generate_string();
2171: # &Apache::lonnet::logthis("Generated: $currentstring");
2172: &enable_para();
2173:
2174: }
2175: return $currentstring;
2176: }
2177:
2178: #-- <tr> tag (end tag optional)
2179: sub start_tr {
2180: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2181: my $currentstring = '';
2182: if ($target eq 'web' || $target eq 'webgrade') {
2183: $currentstring = $token->[4];
2184: } elsif ($target eq 'tex') {
2185:
2186: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2187: $Apache::londefdef::table[-1]->start_row();
2188:
2189: if ($align ne '') {
2190: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2191: }
2192:
2193: #---------------------------------------------------------------
2194: # Old table code.
2195: #---------------------------------------------------------------
2196:
2197: if (0) {
2198: $Apache::londefdef::table[-1]{'row_number'}++;
2199: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2200: if ($alignchar ne '') {
2201: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2202: } else {
2203: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2204: }
2205: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2206: #
2207: # Need to save the number of table columns to preserve the max # columns.
2208: #
2209: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2210: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2211: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2212: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2213: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2214: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2215: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2216: }
2217: }
2218: return $currentstring;
2219: }
2220:
2221: sub end_tr {
2222: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2223: my $currentstring = &end_p(); # Close any pending <p> in the row.
2224: if ($target eq 'web' || $target eq 'webgrade') {
2225: $currentstring .= $token->[2];
2226: } elsif ($target eq 'tex') {
2227:
2228: # In case the user is missing a </td> or </th> tag:
2229:
2230: if ($Apache::londefdef::TD_redirection) {
2231: &end_td_tex($parstack,$parser,$safeeval);
2232: }
2233: $Apache::londefdef::table[-1]->end_row();
2234:
2235: #-----------------------------------------------
2236: # Old table code
2237: #-----------------------------------------------
2238:
2239: if (0) {
2240: if ($Apache::londefdef::TD_redirection) {
2241: &end_td_tex($parstack,$parser,$safeeval);
2242: }
2243: # Counter columns must be the maximum number of columns seen
2244: # in the table so far so:
2245: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2246: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2247: }
2248: }
2249:
2250:
2251: }
2252: return $currentstring;
2253: }
2254:
2255: #-- <td> tag (end tag optional)
2256: sub start_td {
2257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2258: my $currentstring = '';
2259: if ($target eq 'web' || $target eq 'webgrade') {
2260: $currentstring = $token->[4];
2261: } elsif ($target eq 'tex') {
2262: $Apache::londefdef::TD_redirection = 1;
2263: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2264: }
2265: return $currentstring;
2266: }
2267:
2268: sub tag_check {
2269: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2270: my @ar=@$parstack;
2271: for (my $i=$#ar-1;$i>=0;$i--) {
2272: if (lc($$tagstack[$i]) eq $good_tag) {
2273: &start_td_tex($parstack,$parser,$safeeval);
2274: last;
2275: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2276: splice @ar, $i+1;
2277: &end_td_tex(\@ar,$parser,$safeeval);
2278: &start_td_tex($parstack,$parser,$safeeval);
2279: last;
2280: }
2281: }
2282: return '';
2283: }
2284:
2285: #
2286: # Factor out cell configuration hash generation:
2287: #
2288:
2289: sub cell_config_hash {
2290: my ($align, $rowspan, $colspan, $width) = @_;
2291: if ($rowspan ne '') {
2292: $rowspan =~ s/^\s+|\s+$//g;
2293: }
2294: if ($colspan ne '') {
2295: $colspan =~ s/^\s+|\s+$//g;
2296: }
2297: my %config;
2298: if ($align ne '') {
2299: $config{'halign'} = $align;
2300: }
2301: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2302: $config{'colspan'} = $colspan;
2303: }
2304: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2305: $config{'rowspan'} = $rowspan;
2306: }
2307: if ($width ne '') {
2308: $config{'width'} = $width;
2309: }
2310: return \%config;
2311: }
2312:
2313: sub start_td_tex {
2314: my ($parstack,$parser,$safeeval) = @_;
2315:
2316: # At this stage, an empty cell is created with the
2317: # appropriate rowspan/colspan and alignment
2318: # attributes, but empty of text. end_td_tex will
2319: # fetch the contents from the recursive parse and
2320: # fill the cell with them:
2321: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2322: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2323: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2324: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2325: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2326:
2327: my $table = $Apache::londefdef::table[-1];
2328: $table->add_cell('', $config);
2329:
2330:
2331: #------------------------------------------------
2332: # Old table code.
2333: #------------------------------------------------
2334:
2335: if (0) {
2336:
2337: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2338: if ($alignchar eq '') {
2339: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2340: }
2341: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2342: $Apache::londefdef::table[-1]{'counter_columns'}++;
2343: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2344: if (defined $TeXwidth) {
2345: my $current_length=&recalc($TeXwidth);
2346: $current_length=~/(\d+\.?\d*)/;
2347: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2348: }
2349: }
2350: &Apache::lonxml::startredirection();
2351: return '';
2352: }
2353:
2354: sub end_td_tex {
2355:
2356: my $text = &Apache::lonxml::endredirection();
2357: my $table = $Apache::londefdef::table[-1];
2358: $table->append_cell_text($text);
2359:
2360: #-------------------------------------------------
2361: # Old table code
2362: #-------------------------------------------------
2363:
2364: if (0) {
2365: my ($parstack,$parser,$safeeval) = @_;
2366: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2367: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2368: my $data = &Apache::lonxml::endredirection();
2369:
2370: # The rowspan array of the table indicates which cells are part of a span.
2371: # n indicates the start of a span set of n rows.
2372: # ^ indicates a cell that continues a span set.
2373: # _ indicates the cell is at the bottom of a span set.
2374: # If this and subsequent cells are part of a rowspan, we must
2375: # push along the row until we find one that is not.
2376:
2377: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2378: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2379: # Part of a span.
2380: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2381: $current_column++;
2382: }
2383: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2384:
2385:
2386: # Get the column and row spans.
2387: # Colspan can be done via \multicolumn if I can figure out the data structs.
2388:
2389: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2390: if (!$colspan) {
2391: $colspan = 1;
2392: }
2393:
2394: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2395: if (!$rowspan) {
2396: $rowspan = 1;
2397: }
2398:
2399:
2400:
2401: for (my $c = 0; $c < $colspan; $c++) {
2402: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2403: for (my $i = 1; $i < $rowspan; $i++) {
2404: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2405: if ($i == ($rowspan-1)) {
2406: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2407: }
2408: }
2409: }
2410:
2411: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2412: if (defined $TeXwidth) {
2413: for (my $c = 0; $c < $colspan; $c++) {
2414: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2415: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2416: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2417: }
2418: } else {
2419: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2420: my $garbage_data=$data;
2421: my $fwidth=0;
2422: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2423: my $current_length=&recalc($1);
2424: $current_length=~/(\d+\.?\d*)/;
2425: if ($fwidth<$1) {$fwidth=$1;}
2426: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2427: }
2428: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2429: my $current_length=$1;
2430: if ($fwidth<$current_length) {$fwidth=$current_length;}
2431: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2432: }
2433: for (my $c = 0; $c < $colspan; $c++) {
2434: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2435: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2436: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2437: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2438: }
2439: } 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)*/) {
2440: my $garbage_data=$data;
2441: my $fwidth=0;
2442: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2443: my $current_length=&recalc($1);
2444: $current_length=~/(\d+\.?\d*)/;
2445: if ($fwidth<$1) {$fwidth=$1;}
2446: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2447: }
2448: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2449: my $current_length=&recalc($1);
2450: $current_length=~/(\d+\.?\d*)/;
2451: if ($fwidth<$1) {$fwidth=$1;}
2452: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2453: }
2454: for (my $c = 0; $c < $colspan; $c++) {
2455: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2456: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2457: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2458: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2459: }
2460: $data=~s/\\\\\s*$//;
2461: } else {
2462: $data=~s/^\s+(\S.*)/$1/;
2463: $data=~s/(.*\S)\s+$/$1/;
2464: $data=~s/(\s)+/$1/;
2465: my ($current_length,$min_length)=(0,0);
2466: if ($data=~/\\vskip/) {
2467: my $newdata=$data;
2468: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2469: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2470: foreach my $elementdata (@newdata) {
2471: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2472: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2473: my @words=split(/ /,$elementdata);
2474: foreach my $word (@words) {
2475: my $lengthword=2.5*&LATEX_length($word);
2476: if ($min_length<$lengthword) {$min_length=$lengthword;}
2477: }
2478: }
2479: } else {
2480: $current_length=2.5*&LATEX_length($data);
2481: my @words=split(/ /,$data);
2482: foreach my $word (@words) {
2483: my $lengthword=2*&LATEX_length($word);
2484: if ($min_length<$lengthword) {$min_length=$lengthword;}
2485: }
2486: }
2487: for (my $c = 0; $c < $colspan; $c++) {
2488: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2489: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2490: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2491: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2492: }
2493: }
2494: }
2495: # Substitute all of the tables nested in this cell in their appropriate places.
2496:
2497:
2498: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2499: for (my $in=0; $in<=$nested_count; $in++) {
2500: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2501: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2502: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2503: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2504:
2505: }
2506: # Should be be killing off the 'include' elements as they're used up?
2507:
2508: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2509:
2510:
2511:
2512:
2513: # the colspan array will indicate how many columns will be spanned by this
2514: # cell..this requires that counter_columns also be adjusted accordingly
2515: # so that the next bunch of text goes in the right cell. Note that since
2516: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2517: #
2518:
2519: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2520: for (my $i = 0; $i < ($colspan -1); $i++) {
2521: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2522: }
2523: for (my $r = 0; $r < $rowspan; $r++) {
2524: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2525: # Put empty text in spanned cols.
2526:
2527: }
2528:
2529: }
2530:
2531: return '';
2532: }
2533:
2534: sub end_td {
2535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2536: my $currentstring = '';
2537: if ($target eq 'web' || $target eq 'webgrade') {
2538: $currentstring = $token->[2];
2539: } elsif ($target eq 'tex') {
2540: $Apache::londefdef::TD_redirection =0;
2541: &end_td_tex($parstack,$parser,$safeeval);
2542: }
2543: return $currentstring;
2544: }
2545:
2546: #-- <th> tag (end tag optional)
2547: sub start_th {
2548: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2549: my $currentstring = '';
2550: if ($target eq 'web' || $target eq 'webgrade') {
2551: $currentstring = $token->[4];
2552: } elsif ($target eq 'tex') {
2553: $Apache::londefdef::TD_redirection = 1;
2554: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2555: }
2556: return $currentstring;
2557: }
2558:
2559: sub tagg_check {
2560: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2561: my @ar=@$parstack;
2562: for (my $i=$#ar-1;$i>=0;$i--) {
2563: if (lc($$tagstack[$i]) eq $good_tag) {
2564: &start_th_tex($parstack,$parser,$safeeval);
2565: last;
2566: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2567: splice @ar, $i+1;
2568: &end_th_tex(\@ar,$parser,$safeeval);
2569: &start_th_tex($parstack,$parser,$safeeval);
2570: last;
2571: }
2572: }
2573: return '';
2574: }
2575:
2576: sub start_th_tex {
2577: my ($parstack,$parser,$safeeval) = @_;
2578:
2579: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2580: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2581: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2582:
2583: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2584: my $table = $Apache::londefdef::table[-1];
2585: $table->add_cell('\textbf{', $config);
2586:
2587: #-------------------------------------------------------------------------------------
2588: #
2589: # Old table code.
2590: #
2591: #--------------------------------------------------------------------------------------
2592:
2593: if (0) {
2594:
2595:
2596: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2597: if ($alignchar eq '') {
2598: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2599: }
2600: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2601: $Apache::londefdef::table[-1]{'counter_columns'}++;
2602: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2603: if (defined $TeXwidth) {
2604: my $current_length=&recalc($TeXwidth);
2605: $current_length=~/(\d+\.?\d*)/;
2606: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2607: }
2608: }
2609:
2610: # Accept xml until the </th> tag.
2611:
2612: &Apache::lonxml::startredirection();
2613: return '';
2614: }
2615:
2616: sub end_th_tex {
2617: my ($parstack,$parser,$safeeval) = @_;
2618:
2619: my $table = $Apache::londefdef::table[-1];
2620: my $text = &Apache::lonxml::endredirection();
2621: $table->append_cell_text($text.'}');
2622:
2623: #-----------------------------------------------------------------------------
2624: # Old table code:
2625: #-----------------------------------------------------------------------------
2626:
2627: if (0) {
2628: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2629: my $data=&Apache::lonxml::endredirection();
2630: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2631: if (defined $TeXwidth) {
2632: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2633: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2634: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2635: } else {
2636: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2637: my $garbage_data=$data;
2638: my $fwidth=0;
2639: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2640: my $current_length=&recalc($1);
2641: $current_length=~/(\d+\.?\d*)/;
2642: if ($fwidth<$1) {$fwidth=$1;}
2643: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2644: }
2645: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2646: my $current_length=$1;
2647: if ($fwidth<$current_length) {$fwidth=$current_length;}
2648: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2649: }
2650: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2651: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2652: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2653: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2654: } else {
2655: $data=~s/^\s+(\S.*)/$1/;
2656: $data=~s/(.*\S)\s+$/$1/;
2657: $data=~s/(\s)+/$1/;
2658: my ($current_length,$min_length)=(0,0);
2659: if ($data=~/\\vskip/) {
2660: my $newdata=$data;
2661: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2662: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2663: foreach my $elementdata (@newdata) {
2664: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2665: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2666: my @words=split(/ /,$elementdata);
2667: foreach my $word (@words) {
2668: my $lengthword=2.5*&LATEX_length($word);
2669: if ($min_length<$lengthword) {$min_length=$lengthword;}
2670: }
2671: }
2672: } else {
2673: $current_length=2.5*&LATEX_length($data);
2674: my @words=split(/ /,$data);
2675: foreach my $word (@words) {
2676: my $lengthword=2*&LATEX_length($word);
2677: if ($min_length<$lengthword) {$min_length=$lengthword;}
2678: }
2679: }
2680: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2681: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2682: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2683: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2684: }
2685: }
2686: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2687: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2688: }
2689: #make data bold
2690: $data='\textbf{'.$data.'}';
2691: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2692: }
2693: return'';
2694: }
2695:
2696: sub end_th {
2697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2698: my $currentstring = &end_p(); # Close any open <p> in the row.
2699: if ($target eq 'web' || $target eq 'webgrade') {
2700: $currentstring .= $token->[2];
2701: } elsif ($target eq 'tex') {
2702: $Apache::londefdef::TD_redirection =0;
2703: &end_th_tex($parstack,$parser,$safeeval);
2704: }
2705: return $currentstring;
2706: }
2707:
2708: #-- <img> tag (end tag forbidden)
2709: #
2710: # Render the <IMG> tag.
2711: # <IMG> has the following attributes (in addition to the
2712: # standard HTML ones:
2713: # TeXwrap - Governs how the tex target will try to wrap text around
2714: # horizontally aligned images.
2715: # TeXwidth - The width of the image when rendered for print (mm).
2716: # TeXheight - The height of the image when rendered for print (mm)
2717: # (Note there seems to also be support for this as a % of page size)
2718: #
2719: sub start_img {
2720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2721: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2722: undef,1);
2723: if (! $src &&
2724: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2725: ) {
2726: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2727: return '';
2728: }
2729: &Apache::lonxml::extlink($src);
2730: my $currentstring = '';
2731: my $scaling = .3;
2732:
2733: # Render unto browsers that which are the browser's...
2734:
2735: if ($target eq 'web' || $target eq 'webgrade') {
2736: my $enc = ('yes' eq
2737: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2738: $safeeval)));
2739: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2740: $enc);
2741:
2742: # and render unto TeX that which is LaTeX
2743: } elsif ($target eq 'tex') {
2744: #
2745: # The alignment will require some superstructure to be put around
2746: # the \includegraphics stuff. At present we can only partially
2747: # simulate the alignments offered by html.
2748: #
2749: #
2750: my $align = lc(&Apache::lonxml::get_param('align',
2751: $parstack,
2752: $safeeval,
2753: undef,1));
2754: if(!$align) {
2755: $align = "bottom"; # This is html's default so it's ours too.
2756: }
2757: #
2758: &Apache::lonxml::debug("Alignemnt = $align");
2759: # LaTeX's image/text wrapping is really bad since it wants to
2760: # make figures float.
2761: # The user has the optional parameter (applicable only to l/r
2762: # alignment to use the picins/parpic directive to get wrapped text
2763: # this is also imperfect.. that's why we give them a choice...
2764: # so they can't yell at us for our choice.
2765: #
2766: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2767: $parstack,
2768: $safeeval,
2769: undef,0);
2770: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2771: if(!$latex_rendering) {
2772: $latex_rendering = "texwrap";
2773: }
2774: # using texwrap inside a table does not work. So, if after all of this,
2775: # texwrap is on, we turn it off if we detect we're in a table:
2776: #
2777: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2778: $latex_rendering = 'parpic';
2779: }
2780:
2781: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2782:
2783: #if original bmp/gif/jpg/png file exist do following:
2784: my $origsrc=$src;
2785: my ($path,$file) = &get_eps_image($src);
2786: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2787: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2788: &Apache::lonxml::debug("path = $path file = $file src = $src");
2789: if (-e $src) {
2790: &Apache::lonxml::debug("$src exists");
2791: my ($height_param,$width_param)=
2792: &image_size($origsrc,0.3,$parstack,$safeeval);
2793: my $size;
2794: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2795: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2796: # Default size if not able to extract that (e.g. eps image).
2797:
2798: # &Apache::lonnet::logthis("Size = $size");
2799:
2800: $size='['.$size;
2801: $size=~s/,$/]/;
2802: $currentstring .= '\graphicspath{{'.$path.'}}'
2803: .'\includegraphics'.$size.'{'.$file.'} ';
2804: my $closure;
2805: ($currentstring, $closure) = &align_latex_image($align,
2806: $latex_rendering,
2807: $currentstring,
2808: $width_param,
2809: $height_param);
2810: $currentstring .= $closure;
2811:
2812: } else {
2813: &Apache::lonxml::debug("$src does not exist");
2814: #original image file doesn't exist so check the alt attribute
2815: my $alt =
2816: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2817: unless ($alt) {
2818: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2819: }
2820:
2821: if ($alt) { $currentstring .= ' '.$alt.' '; }
2822: }
2823:
2824: # And here's where the semi-quote breaks down: allow the user
2825: # to edit the beast as well by rendering the problem for edit:
2826: } elsif ($target eq 'edit') {
2827: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2828: $currentstring .=&Apache::edit::tag_start($target,$token);
2829: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2830: &Apache::edit::browse('src',undef,'alt',$only).' '.
2831: &Apache::edit::search('src',undef,'alt').'<br />';
2832: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2833: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2834: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2835: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2836: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2837: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2838: ['','bottom','middle','top','left','right'],$token,5);
2839: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2840: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2841: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2842: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2843:
2844: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2845: ['no','yes'], $token, 2);
2846: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2847: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2848: }
2849: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2850: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2851: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2852: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2853:
2854: if ($token->[2]{'src'}=~/\$/) {
2855: $currentstring.=&mt('Variable image source');
2856: } elsif ($token->[2]{'src'}=~/\S/) {
2857: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2858: if ($width) { $currentstring.=' width="'.$width.'" '; }
2859: if ($height) { $currentstring.=' height="'.$height.'" '; }
2860: $currentstring .= ' />';
2861: } else {
2862: $currentstring.=&mt("No image source specified");
2863: }
2864: } elsif ($target eq 'modified') {
2865: my ($osrc,$owidth,$oheight)=
2866: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2867: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2868: $safeeval,'src','alt','align',
2869: 'TeXwidth','TeXheight', 'TeXwrap',
2870: 'width','height','encrypturl');
2871: my ($nsrc,$nwidth,$nheight)=
2872: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2873: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2874: &image_replication($loc);
2875: my ($iwidth,$iheight);
2876: if (-e $loc) {
2877: my $image = Image::Magick->new;
2878: $image->Read($loc);
2879: ($iwidth, $iheight) = ($image->Get('width'),
2880: $image->Get('height'));
2881: }
2882: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2883: # changed image or no size specified,
2884: # if they didn't explicitly change the
2885: # width or height use the ones from the image
2886: if ($iwidth && $iheight) {
2887: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2888: $token->[2]{'width'} = $iwidth;$ctag=1;
2889: }
2890: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2891: $token->[2]{'height'}=$iheight;$ctag=1;
2892: }
2893: }
2894: }
2895: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2896: # if we don't have a width or height
2897: if ($iwidth && $cwidth && !$cheight) {
2898: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2899: }
2900: if ($iheight && $cheight && !$cwidth) {
2901: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2902: }
2903: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2904: }
2905:
2906: return $currentstring;
2907: }
2908:
2909: sub end_img {
2910: my ($target,$token) = @_;
2911: my $currentstring = '';
2912: if ($target eq 'web' || $target eq 'webgrade') {
2913: $currentstring = $token->[2];
2914: } elsif ($target eq 'tex') {
2915: $currentstring = '';
2916: }
2917: return $currentstring;
2918: }
2919:
2920: #-- <applet> tag (end tag required)
2921: sub start_applet {
2922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2923:
2924: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2925: &Apache::lonxml::extlink($code);
2926: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2927: undef,1);
2928: &Apache::lonxml::extlink($archive);
2929: my $currentstring = '';
2930: if ($target eq 'web' || $target eq 'webgrade') {
2931: $currentstring = $token->[4];
2932: } elsif ($target eq 'tex') {
2933: # Turn off some stuff we can't be inside thank you LaTeX
2934:
2935: my $restart_sub = 0;
2936: my $restart_sup = 0;
2937:
2938: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2939: # using the start_ stop_ functions.. those tags only care about
2940: # $target.
2941:
2942: if (&is_inside_of($tagstack, "sub")) {
2943: $restart_sub = 1;
2944: $currentstring .= &end_sub($target, $token, $tagstack,
2945: $parstack, $parser, $safeeval);
2946: }
2947: if (&is_inside_of($tagstack, "sup")) {
2948: $restart_sup = 1;
2949: $currentstring .= &end_sup($target, $token, $tagstack,
2950: $parstack, $parser, $safeeval);
2951: }
2952:
2953: # Now process the applet; just replace it with its alt attribute.
2954:
2955: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2956: $safeeval,undef,1);
2957: unless ($alttag) {
2958: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2959: undef,1);
2960: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2961: $code);
2962: }
2963: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2964: '.}\end{center}';
2965:
2966: # Turn stuff back on that we can't be inside of.
2967:
2968: if ($restart_sub) {
2969: $currentstring .= &start_sub($target, $token, $tagstack,
2970: $parstack, $parser, $safeeval);
2971: }
2972: if ($restart_sup) {
2973: $currentstring .= &start_sup($target, $token, $tagstack,
2974: $parstack, $parser, $safeeval);
2975: }
2976: }
2977: return $currentstring;
2978: }
2979:
2980: sub end_applet {
2981: my ($target,$token) = @_;
2982: my $currentstring = '';
2983: if ($target eq 'web' || $target eq 'webgrade') {
2984: $currentstring = $token->[2];
2985: } elsif ($target eq 'tex') {
2986: }
2987: return $currentstring;
2988: }
2989:
2990: #-- <embed> tag (end tag optional/required)
2991: sub start_embed {
2992: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2993: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2994: &Apache::lonxml::extlink($src);
2995: my $currentstring = '';
2996: if ($target eq 'web' || $target eq 'webgrade') {
2997: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2998: } elsif ($target eq 'tex') {
2999: }
3000: return $currentstring;
3001: }
3002:
3003: sub end_embed {
3004: my ($target,$token) = @_;
3005: my $currentstring = '';
3006: if ($target eq 'web' || $target eq 'webgrade') {
3007: $currentstring = $token->[2];
3008: } elsif ($target eq 'tex') {
3009: # ./.
3010: }
3011: return $currentstring;
3012: }
3013:
3014: #-- <param> tag (end tag forbidden)
3015: sub start_param {
3016: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3017: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3018: undef,1);
3019: if ($name =~/^cabbase$/i) {
3020: my $value=&Apache::lonxml::get_param('value',$parstack,
3021: $safeeval,undef,1);
3022: &Apache::lonxml::extlink($value);
3023: } elsif ($name eq 'flashvars') {
3024: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3025: eq 'application/x-shockwave-flash') {
3026: my $launcher =
3027: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3028: if ($launcher) {
3029: &Apache::lonxml::extlink($launcher);
3030: }
3031: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3032: $safeeval,undef,1);
3033: if ($flashvars ne '') {
3034: foreach my $item (split(/\&/,$flashvars)) {
3035: my ($key,$value)=split(/=/,$item,2);
3036: if ($key eq 'content') {
3037: if ($value ne '') {
3038: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3039: &Apache::lonxml::extlink($dir.$value);
3040: }
3041: } elsif ($key eq 'thumb') {
3042: if ($value ne '') {
3043: &Apache::lonxml::extlink($value);
3044: }
3045: }
3046: }
3047: }
3048: }
3049: }
3050: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3051: if ($src ne '') {
3052: &Apache::lonxml::extlink($src);
3053: }
3054: my $currentstring = '';
3055: if ($target eq 'web' || $target eq 'webgrade') {
3056: my %toconvert;
3057: if ($src) { $toconvert{'src'}= $src; }
3058: if ($name=~/^cabbase$/i) {
3059: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3060: $safeeval,undef,1);
3061: }
3062: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3063: } elsif ($target eq 'tex') {
3064: }
3065: return $currentstring;
3066: }
3067:
3068: sub end_param {
3069: my ($target,$token) = @_;
3070: my $currentstring = '';
3071: if ($target eq 'web' || $target eq 'webgrade') {
3072: $currentstring = $token->[2];
3073: } elsif ($target eq 'tex') {
3074: }
3075: return $currentstring;
3076: }
3077:
3078: #-- <allow> tag
3079: sub start_allow {
3080: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3081: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3082: &Apache::lonxml::extlink($src);
3083:
3084: if ($target eq 'tex') { &image_replication($src); }
3085: my $result;
3086: if ($target eq 'edit') {
3087: $result .=&Apache::edit::tag_start($target,$token);
3088: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3089: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3090: } elsif ($target eq 'modified') {
3091: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3092: $safeeval,'src');
3093: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3094: }
3095: return $result;
3096: }
3097:
3098: sub end_allow {
3099: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3100: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3101: return '';
3102: }
3103:
3104: #-- Frames (end tag required)
3105: #-- <frameset>
3106: sub start_frameset {
3107: my ($target,$token) = @_;
3108: my $currentstring = ''; # Close any pending para.
3109: if ($target eq 'web' || $target eq 'webgrade') {
3110: $currentstring =
3111: &Apache::loncommon::start_page($Apache::londefdef::title,
3112: $Apache::londefdef::head,
3113: {'add_entries' => $token->[2],
3114: # 'no_title' => 1,
3115: 'force_register' => 1,
3116: 'frameset' => 1,});
3117:
3118: }
3119: return $currentstring;
3120: }
3121:
3122: sub end_frameset {
3123: my ($target,$token) = @_;
3124: my $currentstring = '';
3125: if ($target eq 'web' || $target eq 'webgrade') {
3126: $currentstring = $token->[2];
3127: }
3128: return $currentstring;
3129: }
3130:
3131: #-- <xmp> (end tag required)
3132: sub start_xmp {
3133: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3134: my $currentstring = '';
3135: if ($target eq 'web' || $target eq 'webgrade') {
3136: $currentstring .= $token->[4];
3137: } elsif ($target eq 'tex') {
3138: $currentstring .= '\begin{verbatim}';
3139: }
3140: return $currentstring;
3141: }
3142:
3143: sub end_xmp {
3144: my ($target,$token) = @_;
3145: my $currentstring = '';
3146: if ($target eq 'web' || $target eq 'webgrade') {
3147: $currentstring .= $token->[2];
3148: } elsif ($target eq 'tex') {
3149: $currentstring .= '\end{verbatim}';
3150: }
3151: return $currentstring;
3152: }
3153:
3154: #-- <pre> (end tag required)
3155: sub start_pre {
3156: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3157: my $currentstring = &end_p(); # close off pending <p>
3158: if ($target eq 'web' || $target eq 'webgrade') {
3159: $currentstring .= $token->[4];
3160: } elsif ($target eq 'tex') {
3161: $currentstring .= '\begin{verbatim}';
3162: &Apache::lonxml::disable_LaTeX_substitutions();
3163: }
3164: return $currentstring;
3165: }
3166:
3167: sub end_pre {
3168: my ($target,$token) = @_;
3169: my $currentstring = '';
3170: if ($target eq 'web' || $target eq 'webgrade') {
3171: $currentstring .= $token->[2];
3172: } elsif ($target eq 'tex') {
3173: $currentstring .= '\end{verbatim}';
3174: &Apache::lonxml::enable_LaTeX_substitutions();
3175: }
3176: return $currentstring;
3177: }
3178:
3179: #-- <insert>
3180: sub start_insert {
3181: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web' || $target eq 'webgrade') {
3184: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3185: $currentstring .= '<b>'.$display.'</b>';;
3186: }
3187: return $currentstring;
3188: }
3189:
3190: sub end_insert {
3191: my ($target,$token) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web' || $target eq 'webgrade') {
3194: $currentstring .= '';
3195: }
3196: return $currentstring;
3197: }
3198:
3199: #-- <externallink>
3200: sub start_externallink {
3201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web' || $target eq 'webgrade') {
3204: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3205: $currentstring .= '<b>'.$display.'</b>';;
3206: }
3207: return $currentstring;
3208: }
3209:
3210: sub end_externallink {
3211: my ($target,$token) = @_;
3212: my $currentstring = '';
3213: if ($target eq 'web' || $target eq 'webgrade') {
3214: $currentstring .= '';
3215: }
3216: return $currentstring;
3217: }
3218:
3219: #-- <blankspace heigth="">
3220: sub start_blankspace {
3221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3222: my $currentstring = &end_p(); # closes off any unclosed <p>
3223: if ($target eq 'tex') {
3224: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3225: $currentstring .= '\vskip '.$howmuch.' ';
3226: }
3227: return $currentstring;
3228: }
3229:
3230: sub end_blankspace {
3231: my ($target,$token) = @_;
3232: my $currentstring = '';
3233: if ($target eq 'tex') {
3234: $currentstring .= '';
3235: }
3236: return $currentstring;
3237: }
3238:
3239: #-- <abbr> tag (end tag required)
3240: sub start_abbr {
3241: my ($target,$token) = @_;
3242: my $currentstring = '';
3243: if ($target eq 'web' || $target eq 'webgrade') {
3244: $currentstring = $token->[4];
3245: }
3246: return $currentstring;
3247: }
3248:
3249: sub end_abbr {
3250: my ($target,$token) = @_;
3251: my $currentstring = '';
3252: if ($target eq 'web' || $target eq 'webgrade') {
3253: $currentstring = $token->[2];
3254: }
3255: return $currentstring;
3256: }
3257:
3258: #-- <acronym> tag (end tag required)
3259: sub start_acronym {
3260: my ($target,$token) = @_;
3261: my $currentstring = '';
3262: if ($target eq 'web' || $target eq 'webgrade') {
3263: $currentstring = $token->[4];
3264: }
3265: return $currentstring;
3266: }
3267:
3268: sub end_acronym {
3269: my ($target,$token) = @_;
3270: my $currentstring = '';
3271: if ($target eq 'web' || $target eq 'webgrade') {
3272: $currentstring = $token->[2];
3273: }
3274: return $currentstring;
3275: }
3276:
3277: #-- <area> tag (end tag forbidden)
3278: sub start_area {
3279: my ($target,$token) = @_;
3280: my $currentstring = '';
3281: if ($target eq 'web' || $target eq 'webgrade') {
3282: $currentstring = $token->[4];
3283: }
3284: return $currentstring;
3285: }
3286:
3287: sub end_area {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'web' || $target eq 'webgrade') {
3291: $currentstring = $token->[2];
3292: }
3293: return $currentstring;
3294: }
3295:
3296: #-- <base> tag (end tag forbidden)
3297: sub start_base {
3298: my ($target,$token) = @_;
3299: my $currentstring = '';
3300: if ($target eq 'web' || $target eq 'webgrade') {
3301: $currentstring = $token->[4];
3302: }
3303: return $currentstring;
3304: }
3305:
3306: sub end_base {
3307: my ($target,$token) = @_;
3308: my $currentstring = '';
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring = $token->[2];
3311: }
3312: return $currentstring;
3313: }
3314:
3315: #-- <bdo> tag (end tag required)
3316: sub start_bdo {
3317: my ($target,$token) = @_;
3318: my $currentstring = '';
3319: if ($target eq 'web' || $target eq 'webgrade') {
3320: $currentstring = $token->[4];
3321: }
3322: return $currentstring;
3323: }
3324:
3325: sub end_bdo {
3326: my ($target,$token) = @_;
3327: my $currentstring = '';
3328: if ($target eq 'web' || $target eq 'webgrade') {
3329: $currentstring = $token->[2];
3330: }
3331: return $currentstring;
3332: }
3333:
3334: #-- <bgsound> tag (end tag optional)
3335: sub start_bgsound {
3336: my ($target,$token) = @_;
3337: my $currentstring = '';
3338: if ($target eq 'web' || $target eq 'webgrade') {
3339: $currentstring = $token->[4];
3340: }
3341: return $currentstring;
3342: }
3343:
3344: sub end_bgsound {
3345: my ($target,$token) = @_;
3346: my $currentstring = '';
3347: if ($target eq 'web' || $target eq 'webgrade') {
3348: $currentstring = $token->[2];
3349: }
3350: return $currentstring;
3351: }
3352:
3353: #-- <blink> tag (end tag required)
3354: sub start_blink {
3355: my ($target,$token) = @_;
3356: my $currentstring = '';
3357: if ($target eq 'web' || $target eq 'webgrade') {
3358: $currentstring = $token->[4];
3359: }
3360: return $currentstring;
3361: }
3362:
3363: sub end_blink {
3364: my ($target,$token) = @_;
3365: my $currentstring = '';
3366: if ($target eq 'web' || $target eq 'webgrade') {
3367: $currentstring = $token->[2];
3368: }
3369: return $currentstring;
3370: }
3371:
3372: #-- <blockquote> tag (end tag required)
3373: sub start_blockquote {
3374: my ($target,$token) = @_;
3375: my $currentstring = &end_p(); # Close any unclosed <p>
3376: if ($target eq 'web' || $target eq 'webgrade') {
3377: $currentstring .= $token->[4];
3378: }
3379: if ($target eq 'tex') {
3380: $currentstring .= '\begin{quote}';
3381: }
3382: return $currentstring;
3383: }
3384:
3385: sub end_blockquote {
3386: my ($target,$token) = @_;
3387: my $currentstring = '';
3388: if ($target eq 'web' || $target eq 'webgrade') {
3389: $currentstring = $token->[2];
3390: }
3391: if ($target eq 'tex') {
3392: $currentstring = '\end{quote}';
3393: }
3394: return $currentstring;
3395: }
3396:
3397: #-- <button> tag (end tag required)
3398: sub start_button {
3399: my ($target,$token) = @_;
3400: my $currentstring = '';
3401: if ($target eq 'web' || $target eq 'webgrade') {
3402: $currentstring = $token->[4];
3403: }
3404: return $currentstring;
3405: }
3406:
3407: sub end_button {
3408: my ($target,$token) = @_;
3409: my $currentstring = '';
3410: if ($target eq 'web' || $target eq 'webgrade') {
3411: $currentstring = $token->[2];
3412: }
3413: return $currentstring;
3414: }
3415:
3416: #-- <caption> tag (end tag required)
3417: sub start_caption {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web' || $target eq 'webgrade') {
3421: $currentstring = $token->[4];
3422: }
3423: return $currentstring;
3424: }
3425:
3426: sub end_caption {
3427: my ($target,$token) = @_;
3428: my $currentstring = '';
3429: if ($target eq 'web' || $target eq 'webgrade') {
3430: $currentstring = $token->[2];
3431: }
3432: return $currentstring;
3433: }
3434:
3435: #-- <col> tag (end tag forbdden)
3436: sub start_col {
3437: my ($target,$token) = @_;
3438: my $currentstring = '';
3439: if ($target eq 'web' || $target eq 'webgrade') {
3440: $currentstring = $token->[4];
3441: }
3442: return $currentstring;
3443: }
3444:
3445: sub end_col {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web' || $target eq 'webgrade') {
3449: $currentstring = $token->[2];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <colgroup tag (end tag optional)
3455: sub start_colgroup {
3456: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web' || $target eq 'webgrade') {
3459: $currentstring = $token->[4];
3460: }
3461: if ($target eq 'tex') {
3462: # TODO: Ensure this tag is in a table:
3463:
3464: # Fetch the attributes and build the hash for the
3465: # call to define_colgroup.
3466:
3467: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3468: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3469:
3470: my %colgroup_params;
3471: if ($span ne '') {
3472: $colgroup_params{'span'} = $span;
3473: }
3474: if ($halign ne '') {
3475: $colgroup_params{'halign'} = $halign;
3476: }
3477:
3478: my $table = $Apache::londefdef::table[-1];
3479: $table->define_colgroup(\%colgroup_params);
3480:
3481: }
3482: return $currentstring;
3483: }
3484:
3485: sub end_colgroup {
3486: my ($target,$token) = @_;
3487: my $currentstring = '';
3488: if ($target eq 'web' || $target eq 'webgrade') {
3489: $currentstring = $token->[2];
3490: }
3491: return $currentstring;
3492: }
3493:
3494:
3495: #-- <del> tag (end tag required)
3496: sub start_del {
3497: my ($target,$token) = @_;
3498: my $currentstring = '';
3499: if ($target eq 'web' || $target eq 'webgrade') {
3500: $currentstring = $token->[4];
3501: } elsif ($target eq 'tex') {
3502: &disable_para();
3503: $currentstring .= '\st{';
3504: }
3505: return $currentstring;
3506: }
3507:
3508: sub end_del {
3509: my ($target,$token) = @_;
3510: my $currentstring = '';
3511: if ($target eq 'web' || $target eq 'webgrade') {
3512: $currentstring = $token->[2];
3513: } elsif ($target eq 'tex') {
3514: &enable_para();
3515: $currentstring = '}';
3516: }
3517: return $currentstring;
3518: }
3519:
3520: #-- <fieldset> tag (end tag required)
3521: sub start_fieldset {
3522: my ($target,$token) = @_;
3523: my $currentstring = '';
3524: if ($target eq 'web' || $target eq 'webgrade') {
3525: $currentstring = $token->[4];
3526: }
3527: return $currentstring;
3528: }
3529:
3530: sub end_fieldset {
3531: my ($target,$token) = @_;
3532: my $currentstring = '';
3533: if ($target eq 'web' || $target eq 'webgrade') {
3534: $currentstring = $token->[2];
3535: }
3536: return $currentstring;
3537: }
3538:
3539: #-- <frame> tag (end tag forbidden)
3540: sub start_frame {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web' || $target eq 'webgrade') {
3544: $currentstring = $token->[4];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: sub end_frame {
3550: my ($target,$token) = @_;
3551: my $currentstring = '';
3552: if ($target eq 'web' || $target eq 'webgrade') {
3553: $currentstring = $token->[2];
3554: }
3555: return $currentstring;
3556: }
3557:
3558: #-- <iframe> tag (end tag required)
3559: sub start_iframe {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web' || $target eq 'webgrade') {
3563: $currentstring = $token->[4];
3564: }
3565: return $currentstring;
3566: }
3567:
3568: sub end_iframe {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web' || $target eq 'webgrade') {
3572: $currentstring = $token->[2];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: #-- <ins> tag (end tag required)
3578: sub start_ins {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web' || $target eq 'webgrade') {
3582: $currentstring = $token->[4];
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_ins {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring = $token->[2];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <isindex> tag (end tag forbidden)
3597: sub start_isindex {
3598: my ($target,$token) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web' || $target eq 'webgrade') {
3601: $currentstring = $token->[4];
3602: }
3603: return $currentstring;
3604: }
3605:
3606: sub end_isindex {
3607: my ($target,$token) = @_;
3608: my $currentstring = '';
3609: if ($target eq 'web' || $target eq 'webgrade') {
3610: $currentstring = $token->[2];
3611: }
3612: return $currentstring;
3613: }
3614:
3615: #-- <keygen> tag (end tag forbidden)
3616: sub start_keygen {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web' || $target eq 'webgrade') {
3620: $currentstring = $token->[4];
3621: }
3622: return $currentstring;
3623: }
3624:
3625: sub end_keygen {
3626: my ($target,$token) = @_;
3627: my $currentstring = '';
3628: if ($target eq 'web' || $target eq 'webgrade') {
3629: $currentstring = $token->[2];
3630: }
3631: return $currentstring;
3632: }
3633:
3634: #-- <label> tag
3635: sub start_label {
3636: my ($target,$token) = @_;
3637: my $currentstring = '';
3638: if ($target eq 'web' || $target eq 'webgrade') {
3639: $currentstring = $token->[4];
3640: }
3641: return $currentstring;
3642: }
3643:
3644: sub end_label {
3645: my ($target,$token) = @_;
3646: my $currentstring = '';
3647: if ($target eq 'web' || $target eq 'webgrade') {
3648: $currentstring = $token->[2];
3649: }
3650: return $currentstring;
3651: }
3652:
3653: #-- <layer> tag (end tag required)
3654: sub start_layer {
3655: my ($target,$token) = @_;
3656: my $currentstring = '';
3657: if ($target eq 'web' || $target eq 'webgrade') {
3658: $currentstring = $token->[4];
3659: }
3660: return $currentstring;
3661: }
3662:
3663: sub end_layer {
3664: my ($target,$token) = @_;
3665: my $currentstring = '';
3666: if ($target eq 'web' || $target eq 'webgrade') {
3667: $currentstring = $token->[2];
3668: }
3669: return $currentstring;
3670: }
3671:
3672: #-- <legend> tag (end tag required)
3673: sub start_legend {
3674: my ($target,$token) = @_;
3675: my $currentstring = '';
3676: if ($target eq 'web' || $target eq 'webgrade') {
3677: $currentstring = $token->[4];
3678: }
3679: return $currentstring;
3680: }
3681:
3682: sub end_legend {
3683: my ($target,$token) = @_;
3684: my $currentstring = '';
3685: if ($target eq 'web' || $target eq 'webgrade') {
3686: $currentstring = $token->[2];
3687: }
3688: return $currentstring;
3689: }
3690:
3691: #-- <link> tag (end tag forbidden)
3692: sub start_link {
3693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3694: my $currentstring = '';
3695: if ($target eq 'web' || $target eq 'webgrade') {
3696: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3697: undef,1);
3698: &Apache::lonxml::extlink($href);
3699: $currentstring = $token->[4];
3700: }
3701: return $currentstring;
3702: }
3703:
3704: sub end_link {
3705: my ($target,$token) = @_;
3706: my $currentstring = '';
3707: if ($target eq 'web' || $target eq 'webgrade') {
3708: $currentstring = $token->[2];
3709: }
3710: return $currentstring;
3711: }
3712:
3713: #-- <marquee> tag (end tag optional)
3714: sub start_marquee {
3715: my ($target,$token) = @_;
3716: my $currentstring = '';
3717: if ($target eq 'web' || $target eq 'webgrade') {
3718: $currentstring = $token->[4];
3719: }
3720: return $currentstring;
3721: }
3722:
3723: sub end_marquee {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web' || $target eq 'webgrade') {
3727: $currentstring = $token->[2];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: #-- <multicol> tag (end tag required)
3733: sub start_multicol {
3734: my ($target,$token) = @_;
3735: my $currentstring = &end_p(); # Close any pending <p>
3736: if ($target eq 'web' || $target eq 'webgrade') {
3737: $currentstring .= $token->[4];
3738: }
3739: return $currentstring;
3740: }
3741:
3742: sub end_multicol {
3743: my ($target,$token) = @_;
3744: my $currentstring = '';
3745: if ($target eq 'web' || $target eq 'webgrade') {
3746: $currentstring = $token->[2];
3747: }
3748: return $currentstring;
3749: }
3750:
3751: #-- <nobr> tag (end tag required)
3752: sub start_nobr {
3753: my ($target,$token) = @_;
3754: my $currentstring = '';
3755: if ($target eq 'web' || $target eq 'webgrade') {
3756: $currentstring = $token->[4];
3757: } elsif ($target eq 'tex') {
3758: $currentstring='\mbox{';
3759: }
3760: return $currentstring;
3761: }
3762:
3763: sub end_nobr {
3764: my ($target,$token) = @_;
3765: my $currentstring = '';
3766: if ($target eq 'web' || $target eq 'webgrade') {
3767: $currentstring = $token->[2];
3768: } elsif ($target eq 'tex') {
3769: $currentstring='}';
3770: }
3771: return $currentstring;
3772: }
3773:
3774: #-- <noembed> tag (end tag required)
3775: sub start_noembed {
3776: my ($target,$token) = @_;
3777: my $currentstring = '';
3778: if ($target eq 'web' || $target eq 'webgrade') {
3779: $currentstring = $token->[4];
3780: }
3781: return $currentstring;
3782: }
3783:
3784: sub end_noembed {
3785: my ($target,$token) = @_;
3786: my $currentstring = '';
3787: if ($target eq 'web' || $target eq 'webgrade') {
3788: $currentstring = $token->[2];
3789: }
3790: return $currentstring;
3791: }
3792:
3793: #-- <noframes> tag (end tag required)
3794: sub start_noframes {
3795: my ($target,$token) = @_;
3796: my $currentstring = '';
3797: if ($target eq 'web' || $target eq 'webgrade') {
3798: $currentstring = $token->[4];
3799: }
3800: return $currentstring;
3801: }
3802:
3803: sub end_noframes {
3804: my ($target,$token) = @_;
3805: my $currentstring = '';
3806: if ($target eq 'web' || $target eq 'webgrade') {
3807: $currentstring = $token->[2];
3808: }
3809: return $currentstring;
3810: }
3811:
3812: #-- <nolayer> tag (end tag required)
3813: sub start_nolayer {
3814: my ($target,$token) = @_;
3815: my $currentstring = '';
3816: if ($target eq 'web' || $target eq 'webgrade') {
3817: $currentstring = $token->[4];
3818: }
3819: return $currentstring;
3820: }
3821:
3822: sub end_nolayer {
3823: my ($target,$token) = @_;
3824: my $currentstring = '';
3825: if ($target eq 'web' || $target eq 'webgrade') {
3826: $currentstring = $token->[2];
3827: }
3828: return $currentstring;
3829: }
3830:
3831: #-- <noscript> tag (end tag required)
3832: sub start_noscript {
3833: my ($target,$token) = @_;
3834: my $currentstring = '';
3835: if ($target eq 'web' || $target eq 'webgrade') {
3836: $currentstring = $token->[4];
3837: }
3838: return $currentstring;
3839: }
3840:
3841: sub end_noscript {
3842: my ($target,$token) = @_;
3843: my $currentstring = '';
3844: if ($target eq 'web' || $target eq 'webgrade') {
3845: $currentstring = $token->[2];
3846: }
3847: return $currentstring;
3848: }
3849:
3850: #-- <object> tag (end tag required)
3851: sub start_object {
3852: my ($target,$token) = @_;
3853: my $currentstring = '';
3854: if ($target eq 'web' || $target eq 'webgrade') {
3855: $currentstring = $token->[4];
3856: }
3857: return $currentstring;
3858: }
3859:
3860: sub end_object {
3861: my ($target,$token) = @_;
3862: my $currentstring = '';
3863: if ($target eq 'web' || $target eq 'webgrade') {
3864: $currentstring = $token->[2];
3865: }
3866: return $currentstring;
3867: }
3868:
3869: #-- <optgroup> tag (end tag required)
3870: sub start_optgroup {
3871: my ($target,$token) = @_;
3872: my $currentstring = '';
3873: if ($target eq 'web' || $target eq 'webgrade') {
3874: $currentstring = $token->[4];
3875: }
3876: return $currentstring;
3877: }
3878:
3879: sub end_optgroup {
3880: my ($target,$token) = @_;
3881: my $currentstring = '';
3882: if ($target eq 'web' || $target eq 'webgrade') {
3883: $currentstring = $token->[2];
3884: }
3885: return $currentstring;
3886: }
3887:
3888: #-- <samp> tag (end tag required)
3889: sub start_samp {
3890: my ($target,$token) = @_;
3891: my $currentstring = '';
3892: if ($target eq 'web' || $target eq 'webgrade') {
3893: $currentstring = $token->[4];
3894: } elsif ($target eq 'tex') {
3895: $currentstring='\texttt{';
3896: }
3897: return $currentstring;
3898: }
3899:
3900: sub end_samp {
3901: my ($target,$token) = @_;
3902: my $currentstring = '';
3903: if ($target eq 'web' || $target eq 'webgrade') {
3904: $currentstring = $token->[2];
3905: } elsif ($target eq 'tex') {
3906: $currentstring='}';
3907: }
3908: return $currentstring;
3909: }
3910:
3911: #-- <server> tag
3912: sub start_server {
3913: my ($target,$token) = @_;
3914: my $currentstring = '';
3915: if ($target eq 'web' || $target eq 'webgrade') {
3916: $currentstring = $token->[4];
3917: }
3918: return $currentstring;
3919: }
3920:
3921: sub end_server {
3922: my ($target,$token) = @_;
3923: my $currentstring = '';
3924: if ($target eq 'web' || $target eq 'webgrade') {
3925: $currentstring = $token->[2];
3926: }
3927: return $currentstring;
3928: }
3929:
3930: #-- <spacer> tag (end tag forbidden)
3931: sub start_spacer {
3932: my ($target,$token) = @_;
3933: my $currentstring = &end_p(); # Close off any open <p> tag.
3934: if ($target eq 'web' || $target eq 'webgrade') {
3935: $currentstring .= $token->[4];
3936: }
3937: return $currentstring;
3938: }
3939:
3940: sub end_spacer {
3941: my ($target,$token) = @_;
3942: my $currentstring = '';
3943: if ($target eq 'web' || $target eq 'webgrade') {
3944: $currentstring = $token->[2];
3945: }
3946: return $currentstring;
3947: }
3948:
3949: #-- <span> tag (end tag required)
3950: sub start_span {
3951: my ($target,$token) = @_;
3952: my $currentstring = '';
3953: if ($target eq 'web' || $target eq 'webgrade') {
3954: $currentstring = $token->[4];
3955: }
3956: return $currentstring;
3957: }
3958:
3959: sub end_span {
3960: my ($target,$token) = @_;
3961: my $currentstring = '';
3962: if ($target eq 'web' || $target eq 'webgrade') {
3963: $currentstring = $token->[2];
3964: }
3965: return $currentstring;
3966: }
3967:
3968: #-- <tbody> tag (end tag optional)
3969: sub start_tbody {
3970: my ($target,$token) = @_;
3971: my $currentstring = '';
3972: if ($target eq 'web' || $target eq 'webgrade') {
3973: $currentstring = $token->[4];
3974: }
3975: if ($target eq 'tex') {
3976: # TODO: Ensure this tag is within a table:
3977:
3978: my $table = $Apache::londefdef::table[-1];
3979: $table->start_body();
3980: }
3981: return $currentstring;
3982: }
3983:
3984: sub end_tbody {
3985: my ($target,$token) = @_;
3986: my $currentstring = '';
3987: if ($target eq 'web' || $target eq 'webgrade') {
3988: $currentstring = $token->[2];
3989: }
3990: if($target eq 'tex') {
3991: # TODO: Ensure this tag is within a table:
3992:
3993: my $table = $Apache::londefdef::table[-1];
3994: $table->end_body();
3995: }
3996: return $currentstring;
3997: }
3998:
3999: #-- <tfoot> tag (end tag optional)
4000: sub start_tfoot {
4001: my ($target,$token) = @_;
4002: my $currentstring = '';
4003: if ($target eq 'web' || $target eq 'webgrade') {
4004: $currentstring = $token->[4];
4005: }
4006: if ($target eq 'tex') {
4007: # TODO: ensure this is within a table tag.
4008: my $table = $Apache::londefdef::table[-1];
4009: $table->start_foot();
4010: }
4011: return $currentstring;
4012: }
4013:
4014: sub end_tfoot {
4015: my ($target,$token) = @_;
4016: my $currentstring = '';
4017: if ($target eq 'web' || $target eq 'webgrade') {
4018: $currentstring = $token->[2];
4019: }
4020: if ($target eq 'tex') {
4021: # TODO: Ensure this is in side a table
4022: my $table = $Apache::londefdef::table[-1];
4023: $table->end_foot();
4024: }
4025: return $currentstring;
4026: }
4027:
4028: #-- <thead> tag (end tag optional)
4029: sub start_thead {
4030: my ($target,$token) = @_;
4031: my $currentstring = '';
4032: if ($target eq 'web' || $target eq 'webgrade') {
4033: $currentstring = $token->[4];
4034: }
4035: if ($target eq 'tex') {
4036: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4037: my $table = $Apache::londefdef::table[-1];
4038: $table->start_head();
4039: }
4040: return $currentstring;
4041: }
4042:
4043: sub end_thead {
4044: my ($target,$token) = @_;
4045: my $currentstring = '';
4046: if ($target eq 'web' || $target eq 'webgrade') {
4047: $currentstring = $token->[2];
4048: }
4049: if ($target eq 'tex') {
4050: # TODO: Verify we are in a table and ignore tag if not.
4051:
4052: my $table = $Apache::londefdef::table[-1];
4053: $table->end_head();
4054: }
4055: return $currentstring;
4056: }
4057:
4058: #-- <var> tag
4059: sub start_var {
4060: my ($target,$token) = @_;
4061: my $currentstring = '';
4062: if ($target eq 'web' || $target eq 'webgrade') {
4063: $currentstring = $token->[4];
4064: } elsif ($target eq 'tex') {
4065: $currentstring = '\textit{';
4066: }
4067: return $currentstring;
4068: }
4069:
4070: sub end_var {
4071: my ($target,$token) = @_;
4072: my $currentstring = '';
4073: if ($target eq 'web' || $target eq 'webgrade') {
4074: $currentstring = $token->[2];
4075: } elsif ($target eq 'tex') {
4076: $currentstring = '}';
4077: }
4078: return $currentstring;
4079: }
4080:
4081: #-- <wbr> tag (end tag forbidden)
4082: sub start_wbr {
4083: my ($target,$token) = @_;
4084: my $currentstring = '';
4085: if ($target eq 'web' || $target eq 'webgrade') {
4086: $currentstring = $token->[4];
4087: }
4088: return $currentstring;
4089: }
4090:
4091: sub end_wbr {
4092: my ($target,$token) = @_;
4093: my $currentstring = '';
4094: if ($target eq 'web' || $target eq 'webgrade') {
4095: $currentstring = $token->[2];
4096: }
4097: return $currentstring;
4098: }
4099:
4100: #-- <hideweboutput> tag
4101: sub start_hideweboutput {
4102: my ($target,$token) = @_;
4103: if ($target eq 'web' || $target eq 'webgrade') {
4104: &Apache::lonxml::startredirection();
4105: }
4106: return '';
4107: }
4108:
4109: sub end_hideweboutput {
4110: my ($target,$token) = @_;
4111: my $currentstring = '';
4112: if ($target eq 'web' || $target eq 'webgrade') {
4113: $currentstring = &Apache::lonxml::endredirection();
4114: }
4115: return '';
4116: }
4117:
4118:
4119: sub image_replication {
4120: my $src = shift;
4121: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4122: #replicates eps or ps
4123: my $epssrc = my $pssrc = $src;
4124: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4125: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4126: if (not -e $epssrc && not -e $pssrc) {
4127: my $result=&Apache::lonnet::repcopy($epssrc);
4128: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4129: }
4130: return '';
4131: }
4132:
4133:
4134:
4135: sub resize_image {
4136: my ($height_param, $width_param, $scaling,
4137: $parstack, $safeeval, $depth, $cis) = @_;
4138:
4139: # First apply the scaling...
4140:
4141: $height_param = $height_param * $scaling;
4142: $width_param = $width_param * $scaling;
4143:
4144: #do we have any specified LaTeX size of the picture?
4145: my $toget='TeXwidth';
4146: if ($cis) {
4147: $toget=lc($toget);
4148: }
4149: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4150: $safeeval,$depth,$cis);
4151: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4152: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4153: $safeeval,$depth,$cis);
4154: #do we have any specified web size of the picture?
4155: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4156: $depth,1);
4157: if ($TeXwidth) {
4158: my $old_width_param=$width_param;
4159: if ($TeXwidth=~/(\d+)\s*\%/) {
4160: $width_param = $1*$env{'form.textwidth'}/100;
4161: } else {
4162: $width_param = $TeXwidth;
4163: }
4164: if ($TeXheight) {
4165: $height_param = $TeXheight;
4166: } elsif ($old_width_param) {
4167: $height_param=$TeXwidth/$old_width_param*$height_param;
4168: }
4169: } elsif ($TeXheight) {
4170: $height_param = $TeXheight;
4171: if ($height_param) {
4172: $width_param = $TeXheight/$height_param*$width_param;
4173: }
4174: } elsif ($width) {
4175: my $old_width_param=$width_param;
4176: $width_param = $width*$scaling;
4177: if ($old_width_param) {
4178: $height_param=$width_param/$old_width_param*$height_param;
4179: }
4180: }
4181: if ($width_param > $env{'form.textwidth'}) {
4182: my $old_width_param=$width_param;
4183: $width_param =0.95*$env{'form.textwidth'};
4184: if ($old_width_param) {
4185: $height_param=$width_param/$old_width_param*$height_param;
4186: }
4187: }
4188:
4189: return ($height_param, $width_param);
4190: }
4191:
4192: sub image_size {
4193: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4194:
4195: #size of image from gif/jpg/jpeg/png
4196: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4197: if (-e $ressrc) {
4198: $src = $ressrc;
4199: }
4200: my $image = Image::Magick->new;
4201: my $current_figure = $image->Read($src);
4202: my $width_param = $image->Get('width');
4203: my $height_param = $image->Get('height');
4204: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4205: undef($image);
4206:
4207: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4208: $scaling, $parstack, $safeeval,
4209: $depth, $cis);
4210:
4211: return ($height_param, $width_param);
4212: }
4213:
4214: sub image_width {
4215: my ($height, $width) = &image_size(@_);
4216: return $width;
4217: }
4218: # Not yet 100% sure this is correct in all circumstances..
4219: # due to my uncertainty about mods to image_size.
4220: #
4221: sub image_height {
4222: my ($height, $width) = &image_size(@_);
4223: return $height;
4224: }
4225:
4226: sub get_eps_image {
4227: my ($src)=@_;
4228: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4229:
4230: # In order to prevent the substitution of the alt text, we need to
4231: # be sure the orig_src file is on system now so:
4232:
4233: if (! -e $orig_src) {
4234: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4235: }
4236: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4237: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4238: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4239: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4240: &Apache::lonxml::debug("Filelocation gives: $src");
4241: if (! -e $src) {
4242: &Apache::lonxml::debug("$src does not exist");
4243: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4244: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4245: #if replication failed try to find ps file
4246: $src=~s/\.eps$/\.ps/;
4247: &Apache::lonxml::debug("Now looking for $src");
4248: #if no ps file try to replicate it.
4249: my $didrepcopy = &Apache::lonnet::repcopy($src);
4250: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4251: if ( (not -e $src) ||
4252: ($didrepcopy ne 'ok')) {
4253: &Apache::lonxml::debug("Failed to find or replicate $src");
4254:
4255: #if replication failed try to produce eps file dynamically
4256: $src=~s/\.ps$/\.eps/;
4257: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4258: my $newsrc=$orig_src;
4259: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4260: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4261: print FILE ("$newsrc\n");
4262: close(FILE);
4263: }
4264: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4265: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4266: if ($sext ne "") { # Put the ext. back in to uniquify.
4267: $src =~ s/\.eps$/$sext.eps/;
4268: }
4269:
4270: }
4271:
4272: }
4273: } else {
4274: # If the postscript file has spaces in its name,
4275: # LaTeX will gratuitiously vomit. Therefore
4276: # queue such files for copy with " " replaced by "_".
4277: # printout.pm will know them by their .ps or .eps extensions.
4278: my $newsrc = $orig_src;
4279: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4280: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4281: print FILE "$src\n";
4282: close FILE;
4283: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4284: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4285: }
4286: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4287: $path =~ s/ /\_/g;
4288: $file =~ s/ /\_/g;
4289: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4290: return ($path.'/',$file);
4291: }
4292:
4293: sub eps_generation {
4294: my ($src,$file,$width_param) = @_;
4295: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4296: if (open(my $tmpfile,">>$filename")) {
4297: print $tmpfile "$src\n";
4298: close($tmpfile);
4299: }
4300: my $newsrc = $src;
4301: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4302: $newsrc=~s{/home/httpd/html/res}{};
4303: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4304: $newsrc=~s{/\./}{/};
4305: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4306: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4307: $newsrc=~s{/home/httpd/lonUsers}{};
4308: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4309: }
4310: if ($newsrc=~m{/userfiles/}) {
4311: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4312: } else {
4313: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4314: }
4315: }
4316:
4317: sub file_path {
4318: my $src=shift;
4319: my ($file,$path);
4320: if ($src =~ m!(.*)/([^/]*)$!) {
4321: $file = $2;
4322: $path = $1.'/';
4323: }
4324: return $file,$path;
4325: }
4326:
4327:
4328: sub recalc {
4329: my $argument = shift;
4330: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4331: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4332: my $value=$1;
4333: my $units=$2;
4334: if ($units eq 'cm') {
4335: $value*=10;
4336: } elsif ($units eq 'in') {
4337: $value*=25.4;
4338: } elsif ($units eq 'pc') {
4339: $value*=(25.4*12/72.27);
4340: } elsif ($units eq 'pt') {
4341: $value*=(25.4/72.27);
4342: }
4343: return $value.' mm';
4344: }
4345:
4346: sub LATEX_length {
4347: my $garbage=shift;
4348: $garbage=~s/^\s+$//;
4349: $garbage=~s/^\s+(\S.*)/$1/;#space before
4350: $garbage=~s/(.*\S)\s+$/$1/;#space after
4351: $garbage=~s/(\s)+/$1/;#only one space
4352: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4353: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4354: $garbage=~s/([^\\])\$/$1/g;#$
4355: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4356: $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;
4357: $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;
4358: $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;
4359: $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;
4360: $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;
4361: $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;
4362: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4363: #remove some other LaTeX command
4364: $garbage=~s|\\(\w+)\\|\\|g;
4365: $garbage=~s|\\(\w+)(\s*)|$2|g;
4366: $garbage=~s|\+|11|g;
4367: my $value=length($garbage);
4368: return $value;
4369: }
4370:
4371:
4372: sub align_latex_image {
4373: my ($align, $latex_rendering, $image, $width, $height) = @_;
4374: my $currentstring; # The 1/2 wrapped image.
4375: my $closure; # The closure of the wrappage.
4376:
4377: # if it's none just return it back
4378: if ($latex_rendering eq 'none') {
4379: return ($image,'');
4380: }
4381:
4382: # If there's an alignment specification we need to honor it here.
4383: # For the horizontal alignments, we will also honor the
4384: # value of the latex specfication. The default is parbox,
4385: # and that's used for illegal values too.
4386: #
4387: # Even though we set a default alignment value, the user
4388: # could have given us an illegal value. In that case we
4389: # just use the default alignment of bottom..
4390: $currentstring = '';
4391: if ($align eq "top") {
4392: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4393: $closure = '}';
4394: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4395: my $offset = $height/2;
4396: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4397: $closure = '}';
4398: } elsif ($align eq "left") {
4399: if ($latex_rendering eq "parpic") {
4400: $currentstring .= '\parpic[l]{'.$image;
4401: $closure = '}';
4402: } elsif ($latex_rendering eq "parbox") {
4403: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4404: .$image;
4405: $closure = '\end{minipage}';
4406: } elsif ($latex_rendering eq "wrapfigure"
4407: || $latex_rendering ne 'none') { # wrapfig render
4408: $currentstring .=
4409: '\begin{wrapfigure}{l}{'.$width.'mm}'
4410: .'\scalebox{1.0}{'.$image;
4411: $closure = '}\end{wrapfigure}';
4412: }
4413: } elsif ($align eq "right") {
4414: if ($latex_rendering eq "parpic") {
4415: $currentstring .= '\parpic[r]{'.$image;
4416: $closure = '}';
4417: } elsif ($latex_rendering eq "parbox") {
4418: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4419: .$image;
4420: $closure = '\end{minipage}';
4421: } elsif ($latex_rendering eq "wrapfigure"
4422: || $latex_rendering ne 'none') { # wrapfig render
4423: $currentstring .=
4424: '\begin{wrapfigure}{r}{'.$width.'mm}'
4425: .'\scalebox{1.0}{'.$image;
4426: $closure = '}\end{wrapfigure}';
4427: }
4428: } else { # Bottom is also default.
4429: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4430: $currentstring .= "{$image";
4431: $closure = '}';
4432: }
4433: return ($currentstring, $closure);
4434: }
4435:
4436:
4437: sub is_inside_of {
4438: my ($tagstack, $tag) = @_;
4439: my @stack = @$tagstack;
4440: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4441: if ($stack[$i] eq $tag) {
4442: return 1;
4443: }
4444: }
4445: return 0;
4446: }
4447:
4448:
4449: #
4450: # This sub provides the typical LaTeX prefix matter for tex output:
4451: #
4452: sub latex_header {
4453: my ($mode) = @_;
4454: my $currentstring = '';
4455:
4456: $currentstring .=
4457: "\n% &Apache::lonxml::londefdef \n" .
4458: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4459: if (($env{'form.latex_type'}=~'batchmode') ||
4460: (!$env{'request.role.adv'}) ||
4461: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4462: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4463: '\renewcommand{\deg}{$^{\circ}$}'.
4464: '\usepackage{multirow}'.
4465: '\usepackage{longtable}'.
4466: '\usepackage{textcomp}'.
4467: '\usepackage{makeidx}'.
4468: '\usepackage[dvips]{graphicx}'.
4469: '\usepackage{wrapfig}'.
4470: '\usepackage{picins}'.
4471: '\usepackage[T1]{fontenc}'."\n".
4472: '\usepackage{lmodern}'."\n".
4473: '\usepackage[postscript]{ucs}'."\n".
4474: '\usepackage[utf8x]{inputenc}'."\n".
4475: '\usepackage{pifont}' ."\n".
4476: '\usepackage{latexsym}'."\n".
4477: '\usepackage{epsfig}'.
4478: "\\usepackage{xtab}\n".
4479: "\\usepackage{tabularx}\n".
4480: "\\usepackage{booktabs}\n".
4481: "\\usepackage{array}\n".
4482: "\\usepackage{colortbl}\n".
4483: "\\usepackage{xcolor}\n".
4484: '\usepackage{calc}'.
4485: '\usepackage{amsmath}'.
4486: '\usepackage{soul}',
4487: '\usepackage{amssymb}'.
4488: '\usepackage{amsfonts}'.
4489: '\usepackage{amsthm}'.
4490: '\usepackage{amscd}'
4491: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4492: '\usepackage[T1]{fontenc}'."\n".
4493: '\usepackage{lmodern}'."\n".
4494: '\usepackage[postscript]{ucs}'."\n".
4495: '\usepackage[utf8x]{inputenc}'."\n".
4496: '\usepackage{pifont}' . "\n";
4497:
4498: if($env{'form.pdfFormFields'} eq 'yes') {
4499: $currentstring .= '\usepackage{hyperref}'.
4500: '\usepackage{eforms}'.
4501: '\usepackage{tabularx}';
4502: }
4503:
4504: $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}}'.
4505: '\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}}';
4506: $currentstring .= '\begin{document}';
4507:
4508: return $currentstring;
4509:
4510: }
4511:
4512: =pod
4513:
4514: =head1 NAME
4515:
4516: Apache::londefdef.pm
4517:
4518: =head1 SYNOPSIS
4519:
4520: Tags Default Definition Module
4521:
4522: This is part of the LearningOnline Network with CAPA project
4523: described at http://www.lon-capa.org.
4524:
4525:
4526: =head1 NOTABLE SUBROUTINES
4527:
4528: =over
4529:
4530: =item start_hideweboutput()
4531:
4532: =item end_hideweboutput()
4533:
4534: =item image_replication()
4535:
4536: =item resize_image()
4537:
4538: Get correct sizing parameter for an image given
4539: it's initial ht. and wid. This allows sizing of
4540: images that are generated on-the-fly (e.g. gnuplot)
4541: as well as serving as a utility for image_size.
4542:
4543: Parameter:
4544: height_param
4545: width_param - Initial picture dimensions.
4546: scaling - A scale factor.
4547: parstack, - the current stack of tag attributes
4548: from the xml parser
4549: safeeval, - pointer to the safespace
4550: depth, - from what level in the stack to look for attributes
4551: (assumes -1 if unspecified)
4552: cis - look for attrubutes case insensitively
4553: (assumes false)
4554:
4555: Returns:
4556: height, width - new dimensions.
4557:
4558: =item image_size()
4559:
4560: =item image_width()
4561:
4562: =item image_height()
4563:
4564: =item get_eps_image()
4565:
4566: =item eps_generation()
4567:
4568: =item file_path()
4569:
4570: =item recalc()
4571:
4572: Converts a measurement in to mm from any of
4573: the other valid LaTeX units of measure.
4574: If the units of measure are missing from the
4575: parameter, it is assumed to be in and returned
4576: with mm units of measure
4577:
4578: =item LATEX_length()
4579:
4580: =item align_latex_image()
4581:
4582: Wrap image 'stuff' inside of the LaTeX required to implement
4583: alignment:
4584: align_tex_image(align, latex_rendering, image)
4585: Where:
4586: align - The HTML alignment specification.
4587: latex_rendering - rendering hint for latex.
4588: image - The LaTeX needed to insert the image itsef.
4589: width,height - dimensions of the image.
4590: Returns:
4591: The 1/2 wrapped image and the stuff required to close the
4592: wrappage. This allows e.g. randomlabel to insert more stuff
4593: into the closure.
4594:
4595:
4596: =item is_inside_of($tagstack, $tag)
4597: This sub returns true if the current state of Xml processing is inside of the tag.
4598: Parameters:
4599: tagstack - The tagstack from the parser.
4600: tag - The tag (without the <>'s.).
4601: Sample usage:
4602: if (is_inside_of($tagstack "table")) {
4603: I'm in a table....
4604: }
4605:
4606:
4607:
4608: =back
4609:
4610: =cut
4611:
4612:
4613: 1;
4614: __END__
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