File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.431:
download - view:
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select for diffs
Thu Jul 21 03:31:16 2011 UTC (12 years, 10 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
IMS Export.
- Exclude author-specified metadata and instructorcomment when rendering
problem in a course for export to testbank file ("text" format).
(MSU requirement for third party customized secure exam platform).
- Correct letter used to identify which foil in multople-choice is answer.
1:
2: # The LearningOnline Network with CAPA
3: # Tags Default Definition Module
4: #
5: # $Id: londefdef.pm,v 1.431 2011/07/21 03:31:16 raeburn Exp $
6: #
7: #
8: # Copyright Michigan State University Board of Trustees
9: #
10: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
11: #
12: # LON-CAPA is free software; you can redistribute it and/or modify
13: # it under the terms of the GNU General Public License as published by
14: # the Free Software Foundation; either version 2 of the License, or
15: # (at your option) any later version.
16: #
17: # LON-CAPA is distributed in the hope that it will be useful,
18: # but WITHOUT ANY WARRANTY; without even the implied warranty of
19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
28: # http://www.lon-capa.org/
29: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
30: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
31: # binary executable programs or libraries distributed by the
32: # Michigan State University (the "Licensee"), but any binaries so
33: # distributed are hereby licensed only for use in the context
34: # of a program or computational system for which the Licensee is the
35: # primary author or distributor, and which performs substantial
36: # additional tasks beyond the translation of (La)TeX into HTML.
37: # The C source of the Code may not be distributed by the Licensee
38: # to any other parties under any circumstances.
39: #
40:
41: package Apache::londefdef;
42:
43: use Apache::lonnet;
44: use strict;
45: use Apache::lonxml;
46: use Apache::lontable;
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::loncommon();
52: use Apache::Constants qw(:common);
53: use File::Basename;
54: use LONCAPA();
55: # use Data::Dumper;
56:
57: BEGIN {
58:
59: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
60:
61: }
62:
63:
64: sub initialize_londefdef {
65: $Apache::londefdef::TD_redirection=0;
66: @Apache::londefdef::table = ();
67: $Apache::londefdef::select=0;
68: undef(@Apache::londefdef::description);
69: @Apache::londefdef::DD=(0);
70: @Apache::londefdef::DT=(0);
71: @Apache::londefdef::seenDT=(0);
72: $Apache::londefdef::list_index=0;
73: undef($Apache::londefdef::head);
74: undef($Apache::londefdef::title);
75: }
76:
77: #======================= TAG SUBROUTINES =====================
78: #-- <output>
79: sub start_output {
80: my ($target) = @_;
81: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
82: return '';
83: }
84: sub end_output {
85: my ($target) = @_;
86: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
87: return '';
88: }
89: #-- <m> tag
90: sub start_m {
91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
92: my $currentstring = '';
93: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
94: if ($target eq 'web' || $target eq 'analyze') {
95: &Apache::lonxml::debug("M is starting with:$inside:");
96: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
97: if ($eval eq 'on') {
98: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
99: #&Apache::lonxml::debug("M is evaluated to:$inside:");
100: }
101: my $tex = $inside;
102: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
103: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
104: if ($Apache::lontexconvert::errorstring) {
105: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
106: $tex = &HTML::Entities::encode($tex,'<>&"');
107: my ($linenumber) =
108: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
109: if (defined($linenumber)) {
110: my @tex=split("\n",$tex);
111: $tex[$linenumber]='<b><font color="red">'.
112: $tex[$linenumber].'</font></b>';
113: $tex=join("\n",@tex);
114: }
115: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
116: $Apache::lontexconvert::errorstring='';
117: }
118: #&Apache::lonxml::debug("M is ends with:$currentstring:");
119: $Apache::lonxml::post_evaluate=0;
120: } elsif ($target eq 'tex') {
121:
122: $currentstring = $inside;
123: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
124: if ($eval eq 'on') {
125: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
126: }
127: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
128: # detect simple math mode entry exits, and convert them
129: # to use \ensuremath ... unless there's a \verb inside.
130: if (! ($currentstring=~/\\verb/)) {
131: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
132: $currentstring=~s/^(\s*)\$/$1/;
133: $currentstring=~s/\$(\s*)$/$1/;
134: $currentstring='\ensuremath{'.$currentstring.'}';
135: }
136: }
137: $Apache::lonxml::post_evaluate=0;
138: }
139: return $currentstring;
140: }
141:
142: sub end_m {
143: my ($target,$token) = @_;
144: my $currentstring = '';
145: if ($target eq 'tex') {
146: $currentstring = "";
147: }
148: return $currentstring;
149: }
150:
151: sub start_tthoption {
152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
153: my $result;
154: if ($target eq 'web' || $target eq 'webgrade') {
155: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
156: $style);
157: $inside=~s/^\s*//;
158: if ($env{'browser.mathml'}) {
159: &tth::ttmoptions($inside);
160: } else {
161: &tth::tthoptions($inside);
162: }
163: }
164: return $result;
165: }
166:
167: sub end_tthoption {
168: my ($target,$token) = @_;
169: my $result;
170: return $result;
171: }
172:
173: #-- <html> tag (end tag optional)
174: sub start_html {
175: my ($target,$token) = @_;
176: my $currentstring = '';
177: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
178: # start_body() takes care of emitting the <html>
179: } elsif ($target eq 'tex') {
180:
181: $currentstring .= &latex_header();
182: }
183: return $currentstring;
184: }
185:
186: sub end_html {
187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
188: my $currentstring = '';
189: if ($target eq 'web' || $target eq 'webgrade') {
190: # end_body takes care of the </html>
191: }
192: return $currentstring;
193: }
194:
195: #-- <head> tag (end tag optional)
196: sub start_head {
197: my ($target,$token) = @_;
198: my $currentstring = '';
199: if ($target eq 'web' || $target eq 'webgrade') {
200: &Apache::lonxml::startredirection();
201: }
202: return $currentstring;
203: }
204:
205: sub end_head {
206: my ($target,$token) = @_;
207: my $currentstring = '';
208: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
209: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
210: # in case there is a </head> but no <head>
211: if ($Apache::lonxml::redirection) {
212: $Apache::londefdef::head = &Apache::lonxml::endredirection();
213: }
214: }
215: return $currentstring;
216: }
217:
218: #-- <map> tag (end tag required)
219: sub start_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web' || $target eq 'webgrade') {
223: $currentstring = $token->[4];
224: }
225: return $currentstring;
226: }
227:
228: sub end_map {
229: my ($target,$token) = @_;
230: my $currentstring = '';
231: if ($target eq 'web' || $target eq 'webgrade') {
232: $currentstring = $token->[2];
233: }
234: return $currentstring;
235: }
236:
237: #-- <select> tag (end tag required)
238: sub start_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web' || $target eq 'webgrade') {
242: $currentstring = $token->[4];
243: } elsif ($target eq 'tex') {
244: $Apache::londefdef::select=0;
245: }
246: return $currentstring;
247: }
248:
249: sub end_select {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[2];
254: }
255: return $currentstring;
256: }
257:
258: #-- <option> tag (end tag optional)
259: sub start_option {
260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
261: my $currentstring = '';
262: if ($target eq 'web' || $target eq 'webgrade') {
263: $currentstring = $token->[4];
264: } elsif ($target eq 'tex') {
265: $Apache::londefdef::select++;
266: if ($Apache::londefdef::select == 1) {
267: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
268: } else {
269: $currentstring='\keephidden{';
270: }
271: }
272: return $currentstring;
273: }
274:
275: sub end_option {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: } elsif ($target eq 'tex') {
281: $currentstring='}';
282: }
283: return $currentstring;
284: }
285:
286: #-- <input> tag (end tag forbidden)
287: sub start_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web' || $target eq 'webgrade') {
291: $currentstring = $token->[4];
292: }
293: return $currentstring;
294: }
295:
296: sub end_input {
297: my ($target,$token) = @_;
298: my $currentstring = '';
299: if ($target eq 'web' || $target eq 'webgrade') {
300: $currentstring = $token->[2];
301: }
302: return $currentstring;
303: }
304:
305: #-- <textarea> tag (end tag required)
306: sub start_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web' || $target eq 'webgrade') {
310: $currentstring = $token->[4];
311: }
312: return $currentstring;
313: }
314:
315: sub end_textarea {
316: my ($target,$token) = @_;
317: my $currentstring = '';
318: if ($target eq 'web' || $target eq 'webgrade') {
319: $currentstring = $token->[2];
320: }
321: return $currentstring;
322: }
323:
324: #-- <form> tag (end tag required)
325: sub start_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_form {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <title> tag (end tag required)
344: sub start_title {
345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $Apache::londefdef::title =
349: &Apache::lonxml::get_all_text('/title',$parser,$style);
350: } elsif ($target eq 'tex') {
351: $currentstring .= '\keephidden{Title of the document: '
352: }
353: if ($target eq 'meta') {
354: $currentstring='<title>';
355: &start_output($target);
356: }
357: return $currentstring;
358: }
359:
360: sub end_title {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: # start_title takes care of swallowing the title
365: } elsif ($target eq 'tex') {
366: $currentstring .= '}';
367: }
368: if ($target eq 'meta') {
369: &end_output($target);
370: $currentstring='</title>';
371: }
372: return $currentstring;
373: }
374:
375: #-- <meta> tag (end tag forbidden)
376: sub start_meta {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
378: my $currentstring = '';
379: if ($target eq 'web' || $target eq 'webgrade') {
380: my $args='';
381: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
382: if ($args eq '') {
383: &Apache::lonxml::get_all_text("/meta",$parser,$style);
384: } else {
385: $currentstring = $token->[4];
386: }
387: if ($env{'form.grade_imsexport'}) {
388: $currentstring = '';
389: }
390: } elsif ($target eq 'meta') {
391: unless (&Apache::lonxml::get_param
392: ('http-equiv',$parstack,$safeeval,undef,1)) {
393: my $name=$token->[2]->{'name'};
394: $name=~tr/A-Z/a-z/;
395: $name=~s/\s/\_/gs;
396: $name=~s/\W//gs;
397: if ($name) {
398: $currentstring='<'.$name;
399: my $display=&Apache::lonxml::get_param
400: ('display',$parstack,$safeeval,undef,1);
401: if ($display) {
402: $display=~s/\"/\'/g;
403: $currentstring.=' display="'.$display.'"';
404: }
405: $currentstring.='>'.
406: &Apache::lonxml::get_param
407: ('content',$parstack,$safeeval,undef,1).
408: '</'.$name.'>';
409: }
410: my $display=&Apache::lonxml::get_param
411: ('display',$parstack,$safeeval,undef,1);
412: if ($display) {
413: $display=&HTML::Entities::encode($display,'<>&"');
414: $currentstring.='<'.$name.'.display>'.$display.
415: '</'.$name.'.display>';
416: }
417: }
418: } elsif ($target eq 'tex') {
419: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
420: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
421: if ((not defined $content) && (not defined $name)) {
422: &Apache::lonxml::startredirection();
423: }
424: } elsif ($target eq 'edit') {
425: $currentstring .= &Apache::edit::tag_start($target,$token);
426: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
427: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
428: $currentstring .= &Apache::edit::end_row();
429: } elsif ($target eq 'modified') {
430: my $constructtag =
431: &Apache::edit::get_new_args($token,$parstack,$safeeval,
432: 'name','content');
433: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
434: }
435: return $currentstring;
436: }
437:
438: sub end_meta {
439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
440: my $currentstring = '';
441: if ($target eq 'web' || $target eq 'webgrade') {
442: my $args='';
443: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
444: if ($args ne '') {
445: $currentstring = $token->[4];
446: }
447: } elsif ($target eq 'tex') {
448: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
449: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
450: if ((not defined $content) && (not defined $name)) {
451: &Apache::lonxml::endredirection();
452: }
453: }
454: return $currentstring;
455: }
456:
457: sub insert_meta {
458: return '
459: <meta />';
460: }
461:
462: # accessrule
463: sub start_accessrule {
464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
465: my $currentstring = '';
466: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
467: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
468: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
469: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
470:
471: my ($dom,$crs,$sec,$separator);
472: if ($type eq 'user') {
473: ($dom,$crs,$sec)=split(m{/},$realm);
474: $crs = &LONCAPA::clean_username($crs);
475: $separator = '/';
476: } else {
477: ($dom,$crs,$sec)=split(/\_/,$realm);
478: $crs = &LONCAPA::clean_courseid($crs);
479: $separator = '_';
480: }
481: $dom = &LONCAPA::clean_domain($dom);
482:
483: $sec =~s/\W//;
484: $realm = $dom;
485: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
486: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
487: $role=~s/\W//g;
488:
489: if ($target eq 'web') {
490: my $args='';
491: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
492: if ($args eq '') {
493: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
494: } else {
495: $currentstring = $token->[4];
496: }
497: }
498: if ($target eq 'meta') {
499: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
500: }
501: return $currentstring;
502: }
503:
504: sub end_accessrule {
505: my ($target,$token,$tagstack,$parstack,$parser) = @_;
506: my $currentstring = '';
507: if ($target eq 'web') {
508: my $args='';
509: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
510: if ($args ne '') {
511: $currentstring = $token->[4];
512: }
513: }
514: return $currentstring;
515: }
516:
517: sub generate_css_links {
518: my $links;
519: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
520: if ($css_href =~ /\S/) {
521: &Apache::lonxml::extlink($css_href);
522: $links .=
523: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
524: }
525: return $links;
526: }
527:
528: #-- <body> tag (end tag required)
529: sub start_body {
530: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
531: my $currentstring = '';
532:
533: if ($target eq 'web' || $target eq 'webgrade') {
534: if ($Apache::lonhomework::parsing_a_problem) {
535: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
536: return '';
537: }
538:
539: if (&is_inside_of($tagstack, "head")) {
540: &end_head(@_);
541: }
542:
543: my $extra_head = &generate_css_links();
544:
545: # Breadcrumbs
546: &Apache::lonhtmlcommon::clear_breadcrumbs();
547: if ($env{'request.state'} eq 'construct') {
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'Construction Space',
550: 'href' => &Apache::loncommon::authorspace(),
551: });
552: &Apache::lonhtmlcommon::add_breadcrumb({
553: 'text' => 'HTML Editor',
554: 'href' => '',
555: });
556: # breadcrumbs (and tools) will be created
557: # in start_page->bodytag->innerregister
558: } else {
559: # FIXME Where are we?
560: }
561:
562: $currentstring =
563: &Apache::loncommon::start_page($Apache::londefdef::title,
564: $Apache::londefdef::head
565: .$extra_head,
566: {'add_entries' => $token->[2],
567: # 'no_title' => 1,
568: 'force_register' => 1});
569:
570: my $header = '';
571: if ($env{'request.state'} ne 'published' &&
572: $env{'request.state'} ne 'construct') {
573: $header=&Apache::lonmenu::constspaceform();
574: }
575: if ($env{'request.state'} ne 'published') {
576: $header.=&Apache::londefdef::edit_controls();
577: }
578: if ($env{'request.state'} eq 'construct') {
579: $currentstring.=&Apache::loncommon::head_subbox(
580: &Apache::loncommon::CSTR_pageheader()
581: .$header);
582: } elsif ($env{'request.state'} eq 'edit') {
583: $currentstring.=&Apache::loncommon::head_subbox($header);
584: }
585: $currentstring.=&Apache::lonxml::message_location();
586: } elsif ($target eq 'tex') {
587: $currentstring = ''; # '\begin{document}' is in header.
588: }
589:
590: return $currentstring;
591: }
592:
593: sub edit_controls {
594: my ($nochgview) = @_;
595: my $result .= '
596: <form method="post" action="">
597: <div class="LC_edit_problem_header">';
598: unless ($nochgview) {
599: $result .= '
600: <div class="LC_edit_problem_header_row1">'.
601: &Apache::lonxml::renderingoptions().'
602: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
603: </div>';
604: }
605: $result .= '
606: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
607: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
608: my $viewtext = &mt('Course View');
609: if (&Apache::loncommon::course_type() eq 'Community') {
610: $viewtext = &mt('Community View');
611: }
612: $result .= (' ' x 3).'<input type="button" value="'.
613: $viewtext.'" onclick="javascript:location.href=currentURL" />';
614: }
615: $result .= '</div>
616: </div>
617: </form>
618: ';
619: return $result;
620: }
621:
622: sub end_body {
623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
624: my $currentstring = &end_p(); # Close off unclosed <p>
625: if ($target eq 'web' || $target eq 'webgrade') {
626: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
627: } elsif ($target eq 'tex') {
628: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
629: }
630: return $currentstring;
631: }
632:
633: # \begin{center} causes a new paragprah spacing that looks odd inside
634: # of a table cell. Same at the end of a \center but with a slightly
635: # larger space .. hence center_correction and center_end_correction.
636: #
637: sub center_correction { return '\vspace*{-6 mm}'; }
638: sub center_end_correction { return '\vspace*{-7 mm}'; }
639:
640: #-- <center> tag (end tag required)
641: sub start_center {
642: my ($target,$token,$tagstack) = @_;
643: my $currentstring = &end_p(); # Close off any prior para.
644: if ($target eq 'web' || $target eq 'webgrade') {
645: $currentstring .= $token->[4];
646: } elsif ($target eq 'tex') {
647: if (&is_inside_of($tagstack, "table")) {
648: $currentstring .= ¢er_correction();
649: }
650: $currentstring .= '\begin{center}';
651: }
652: return $currentstring;
653: }
654:
655: sub end_center {
656: my ($target,$token,$tagstack) = @_;
657: my $currentstring = '';
658: if ($target eq 'web' || $target eq 'webgrade') {
659: $currentstring = $token->[2];
660: } elsif ($target eq 'tex') {
661: $currentstring = '\end{center}';
662: if (&is_inside_of($tagstack, "table")) {
663: $currentstring .= ¢er_end_correction();
664: }
665: }
666: return $currentstring;
667: }
668:
669: #-- <b> tag (end tag required)
670: # NOTE: In TeX mode disables internal <p>
671: sub start_b {
672: my ($target,$token) = @_;
673: my $currentstring = '';
674: if ($target eq 'web' || $target eq 'webgrade') {
675: $currentstring = $token->[4];
676: } elsif ($target eq 'tex') {
677: &disable_para();
678: $currentstring .= '\textbf{';
679: }
680: return $currentstring;
681: }
682:
683: sub end_b {
684: my ($target,$token) = @_;
685: my $currentstring = '';
686: if ($target eq 'web' || $target eq 'webgrade') {
687: $currentstring = $token->[2];
688: } elsif ($target eq 'tex') {
689: &enable_para();
690: $currentstring = '}';
691: }
692: return $currentstring;
693: }
694:
695: #-- <strong> tag (end tag required)
696: # NOTE: in TeX mode disables internal <p>
697: sub start_strong {
698: my ($target,$token) = @_;
699: my $currentstring = '';
700: if ($target eq 'web' || $target eq 'webgrade') {
701: $currentstring = $token->[4];
702: } elsif ($target eq 'tex') {
703: &disable_para();
704: $currentstring = '\textbf{';
705: }
706: return $currentstring;
707: }
708:
709: sub end_strong {
710: my ($target,$token) = @_;
711: my $currentstring = '';
712: if ($target eq 'web' || $target eq 'webgrade') {
713: $currentstring = $token->[2];
714: } elsif ($target eq 'tex') {
715: &enable_para();
716: $currentstring = '}';
717: }
718: return $currentstring;
719: }
720:
721: #-- <h1> tag (end tag required)
722: sub start_h1 {
723: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
724: my $currentstring = &end_p(); # Close off any prior para.
725: if ($target eq 'web' || $target eq 'webgrade') {
726: $currentstring .= $token->[4];
727: } elsif ($target eq 'tex') {
728: my $pre;
729: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
730: if ($align eq 'center') {
731: $pre='\begin{center}';
732: } elsif ($align eq 'left') {
733: $pre='\rlap{';
734: } elsif ($align eq 'right') {
735: $pre=' \hfill \llap{';
736: }
737: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
738: if (not defined $TeXsize) {$TeXsize="large";}
739: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
740: } elsif ($target eq 'meta') {
741: $currentstring.='<subject>';
742: &start_output($target);
743: }
744: return $currentstring;
745: }
746:
747: sub end_h1 {
748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
749: my $currentstring = '';
750: if ($target eq 'web' || $target eq 'webgrade') {
751: $currentstring .= $token->[2];
752: } elsif ($target eq 'tex') {
753: my $post='\vskip 0 mm ';
754: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
755: if ($align eq 'center') {
756: $post='\end{center}';
757: } elsif ($align eq 'left') {
758: $post='} \hfill'.'\vskip 0 mm ';
759: } elsif ($align eq 'right') {
760: $post='}'.'\vskip 0 mm ';
761: }
762: $currentstring .= '}}'.$post;
763: } elsif ($target eq 'meta') {
764: &end_output($target);
765: $currentstring='</subject>';
766: }
767: return $currentstring;
768: }
769:
770: #-- <h2> tag
771: sub start_h2 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = &end_p(); # Close off any prior para.
774: if ($target eq 'web' || $target eq 'webgrade') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h2 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h3> tag
814: sub start_h3 {
815: my ($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 $currentstring;
834: }
835:
836: sub end_h3 {
837: my ($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 $currentstring;
854: }
855:
856: #-- <h4> tag
857: sub start_h4 {
858: my ($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 $currentstring;
877: }
878:
879: sub end_h4 {
880: my ($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 $currentstring;
897: }
898:
899: #-- <h5> tag
900: sub start_h5 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior paras.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h5 {
923: my ($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 $currentstring;
940: }
941:
942: #-- <h6> tag
943: sub start_h6 {
944: my ($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 $currentstring;
963: }
964:
965: sub end_h6 {
966: my ($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 $currentstring;
983: }
984:
985: #--- <cite> tag (end tag required)
986: sub start_cite {
987: my ($target,$token) = @_;
988: my $currentstring = '';
989: if ($target eq 'web' || $target eq 'webgrade') {
990: $currentstring .= $token->[4];
991: } elsif ($target eq 'tex') {
992: $currentstring .= '\textit{';
993: }
994: return $currentstring;
995: }
996:
997: sub end_cite {
998: my ($target,$token) = @_;
999: my $currentstring = '';
1000: if ($target eq 'web' || $target eq 'webgrade') {
1001: $currentstring .= $token->[2];
1002: } elsif ($target eq 'tex') {
1003: $currentstring .= '}';
1004: }
1005: return $currentstring;
1006: }
1007:
1008: #-- <i> tag (end tag required)
1009: sub start_i {
1010: my ($target,$token) = @_;
1011: my $currentstring = '';
1012: if ($target eq 'web' || $target eq 'webgrade') {
1013: $currentstring .= $token->[4];
1014: } elsif ($target eq 'tex') {
1015: $currentstring .= '\textit{';
1016: }
1017: return $currentstring;
1018: }
1019:
1020: sub end_i {
1021: my ($target,$token) = @_;
1022: my $currentstring = '';
1023: if ($target eq 'web' || $target eq 'webgrade') {
1024: $currentstring .= $token->[2];
1025: } elsif ($target eq 'tex') {
1026: $currentstring .= '}';
1027: }
1028: return $currentstring;
1029: }
1030:
1031: #-- <address> tag (end tag required)
1032: sub start_address {
1033: my ($target,$token) = @_;
1034: my $currentstring = '';
1035: if ($target eq 'web' || $target eq 'webgrade') {
1036: $currentstring .= $token->[4];
1037: } elsif ($target eq 'tex') {
1038: $currentstring .= '\textit{';
1039: }
1040: return $currentstring;
1041: }
1042:
1043: sub end_address {
1044: my ($target,$token) = @_;
1045: my $currentstring = '';
1046: if ($target eq 'web' || $target eq 'webgrade') {
1047: $currentstring .= $token->[2];
1048: } elsif ($target eq 'tex') {
1049: $currentstring .= '}';
1050: }
1051: return $currentstring;
1052: }
1053:
1054: #-- <dfn> tag (end tag required)
1055: sub start_dfn {
1056: my ($target,$token) = @_;
1057: my $currentstring = '';
1058: if ($target eq 'web' || $target eq 'webgrade') {
1059: $currentstring .= $token->[4];
1060: } elsif ($target eq 'tex') {
1061: $currentstring .= '\textit{';
1062: }
1063: return $currentstring;
1064: }
1065:
1066: sub end_dfn {
1067: my ($target,$token) = @_;
1068: my $currentstring = '';
1069: if ($target eq 'web' || $target eq 'webgrade') {
1070: $currentstring .= $token->[2];
1071: } elsif ($target eq 'tex') {
1072: $currentstring .= '}';
1073: }
1074: return $currentstring;
1075: }
1076:
1077: #-- <tt> tag (end tag required)
1078: sub start_tt {
1079: my ($target,$token) = @_;
1080: my $currentstring = '';
1081: if ($target eq 'web' || $target eq 'webgrade') {
1082: $currentstring .= $token->[4];
1083: } elsif ($target eq 'tex') {
1084: $currentstring .= '\texttt{';
1085: }
1086: return $currentstring;
1087: }
1088:
1089: sub end_tt {
1090: my ($target,$token) = @_;
1091: my $currentstring = '';
1092: if ($target eq 'web' || $target eq 'webgrade') {
1093: $currentstring .= $token->[2];
1094: } elsif ($target eq 'tex') {
1095: $currentstring .= '}';
1096: }
1097: return $currentstring;
1098: }
1099:
1100: #-- <kbd> tag (end tag required)
1101: sub start_kbd {
1102: my ($target,$token) = @_;
1103: my $currentstring = '';
1104: if ($target eq 'web' || $target eq 'webgrade') {
1105: $currentstring .= $token->[4];
1106: } elsif ($target eq 'tex') {
1107: $currentstring .= '\texttt{';
1108: }
1109: return $currentstring;
1110: }
1111:
1112: sub end_kbd {
1113: my ($target,$token) = @_;
1114: my $currentstring = '';
1115: if ($target eq 'web' || $target eq 'webgrade') {
1116: $currentstring .= $token->[2];
1117: } elsif ($target eq 'tex') {
1118: $currentstring .= '}';
1119: }
1120: return $currentstring;
1121: }
1122:
1123: #-- <code> tag (end tag required)
1124: sub start_code {
1125: my ($target,$token) = @_;
1126: my $currentstring = '';
1127: if ($target eq 'web' || $target eq 'webgrade') {
1128: $currentstring .= $token->[4];
1129: } elsif ($target eq 'tex') {
1130: $currentstring .= '\texttt{';
1131: }
1132: return $currentstring;
1133: }
1134:
1135: sub end_code {
1136: my ($target,$token) = @_;
1137: my $currentstring = '';
1138: if ($target eq 'web' || $target eq 'webgrade') {
1139: $currentstring .= $token->[2];
1140: } elsif ($target eq 'tex') {
1141: $currentstring .= '}';
1142: }
1143: return $currentstring;
1144: }
1145:
1146: #-- <em> tag (end tag required)
1147: sub start_em {
1148: my ($target,$token) = @_;
1149: my $currentstring = '';
1150: if ($target eq 'web' || $target eq 'webgrade') {
1151: $currentstring .= $token->[4];
1152: } elsif ($target eq 'tex') {
1153: $currentstring .= '\emph{';
1154: }
1155: return $currentstring;
1156: }
1157:
1158: sub end_em {
1159: my ($target,$token) = @_;
1160: my $currentstring = '';
1161: if ($target eq 'web' || $target eq 'webgrade') {
1162: $currentstring .= $token->[2];
1163: } elsif ($target eq 'tex') {
1164: $currentstring .= '}';
1165: }
1166: return $currentstring;
1167: }
1168:
1169: #-- <q> tag (end tag required)
1170: sub start_q {
1171: my ($target,$token) = @_;
1172: my $currentstring = '';
1173: if ($target eq 'web' || $target eq 'webgrade') {
1174: $currentstring .= $token->[4];
1175: } elsif ($target eq 'tex') {
1176: $currentstring .= '\emph{';
1177: }
1178: return $currentstring;
1179: }
1180:
1181: sub end_q {
1182: my ($target,$token) = @_;
1183: my $currentstring = '';
1184: if ($target eq 'web' || $target eq 'webgrade') {
1185: $currentstring .= $token->[2];
1186: } elsif ($target eq 'tex') {
1187: $currentstring .= '}';
1188: }
1189: return $currentstring;
1190: }
1191:
1192: # <p> is a bit strange since it does not require a closing </p>
1193: # However in latex, we must often output closing stuff to end
1194: # environments and {}'s etc. Therefore we do all the work
1195: # of figuring out the ending strings in the start tag processing,
1196: # and provide a mechanism to output the stop text external
1197: # to tag processing.
1198: #
1199: {
1200:
1201: my $closing_string = ''; # String required to close <p>
1202:
1203: # Some tags are <p> fragile meaning that <p> inside of them
1204: # does not work within TeX mode. This is managed via the
1205: # counter below:
1206: #
1207:
1208: my $para_disabled = 0;
1209:
1210: sub disable_para {
1211: $para_disabled++;
1212: }
1213: sub enable_para {
1214: $para_disabled--;
1215: }
1216:
1217:
1218: #-- <p> tag (end tag optional)
1219: #optional attribute - align="center|left|right"
1220: sub start_p {
1221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1222: my $currentstring = '';
1223: if ($target eq 'web' || $target eq 'webgrade') {
1224: $currentstring .= &end_p(); # close off prior para if in progress.
1225: $currentstring .= $token->[4];
1226: if (! ($currentstring =~ /\//)) {
1227: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1228: }
1229: } elsif ($target eq 'tex' && !$para_disabled) {
1230:
1231: $currentstring .= &end_p(); # close off prior para if in progress.
1232: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1233: if ($align eq 'center') {
1234: $currentstring .='\begin{center}\par ';
1235: $closing_string = '\end{center}';
1236: if (&is_inside_of($tagstack, "table")) {
1237: $currentstring = ¢er_correction().$currentstring;
1238: }
1239: } elsif ($align eq 'right') {
1240: $currentstring.="\n".'{\flushright ';
1241: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1242: $closing_string= "}\n";
1243: } elsif ($align eq 'left') {
1244: $currentstring.= "\n".'{\flushleft ';
1245: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1246: $closing_string = "}\n";
1247: } else {
1248: $currentstring.='\par ';
1249: if (&is_inside_of($tagstack, 'table')) {
1250: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1251: } else {
1252: $closing_string = '\strut\\\\\strut ';
1253: }
1254: }
1255:
1256: }
1257: return $currentstring;
1258: }
1259: #
1260: # End paragraph processing just requires that we output the
1261: # closing string that was saved and blank it.
1262: sub end_p {
1263: # Note only 'tex' mode uses disable_para and enable_para
1264: # so we don't need to know the target in the check below:
1265:
1266: if (!$para_disabled) {
1267: my $current_string = $closing_string;
1268: $closing_string = ''; # Not in a para anymore.
1269: return $current_string;
1270: } else {
1271: return '';
1272: }
1273:
1274: }
1275: }
1276: #-- <br> tag (end tag forbidden)
1277: sub start_br {
1278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1279: my $currentstring = '';
1280: if ($target eq 'web' || $target eq 'webgrade') {
1281: $currentstring .= $token->[4];
1282: } elsif ($target eq 'tex') {
1283: my @tempo=@$tagstack;
1284: my $signal=0;
1285: # Not going to factor this to is_inside_of since that would require
1286: # multiple stack traversals.
1287: #
1288: for (my $i=$#tempo;$i>=0;$i--) {
1289: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1290: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1291: $signal=1;
1292: }
1293: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1294: $signal = 1;
1295: }
1296: }
1297: if ($signal != 1) {
1298: $currentstring .= '\strut \\\\ \strut ';
1299: }
1300:
1301: }
1302: return $currentstring;
1303: }
1304:
1305: sub end_br {
1306: my ($target,$token) = @_;
1307: my $currentstring = '';
1308: if ($target eq 'web' || $target eq 'webgrade') {
1309: $currentstring .= $token->[2];
1310: }
1311: return $currentstring;
1312: }
1313:
1314: #-- <big> tag (end tag required)
1315: sub start_big {
1316: my ($target,$token) = @_;
1317: my $currentstring = '';
1318: if ($target eq 'web' || $target eq 'webgrade') {
1319: $currentstring .= $token->[4];
1320: } elsif ($target eq 'tex') {
1321: $currentstring .= '{\large ';
1322: }
1323: return $currentstring;
1324: }
1325:
1326: sub end_big {
1327: my ($target,$token) = @_;
1328: my $currentstring = '';
1329: if ($target eq 'web' || $target eq 'webgrade') {
1330: $currentstring .= $token->[2];
1331: } elsif ($target eq 'tex') {
1332: $currentstring .= '}';
1333: }
1334: return $currentstring;
1335: }
1336:
1337: #-- <small> tag (end tag required)
1338: sub start_small {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web' || $target eq 'webgrade') {
1342: $currentstring .= $token->[4];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= '{\footnotesize ';
1345: }
1346: return $currentstring;
1347: }
1348:
1349: sub end_small {
1350: my ($target,$token) = @_;
1351: my $currentstring = '';
1352: if ($target eq 'web' || $target eq 'webgrade') {
1353: $currentstring .= $token->[2];
1354: } elsif ($target eq 'tex') {
1355: $currentstring .= '}';
1356: }
1357: return $currentstring;
1358: }
1359:
1360: #-- <basefont> tag (end tag forbidden)
1361: sub start_basefont {
1362: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1363: my $currentstring = '';
1364: if ($target eq 'web' || $target eq 'webgrade') {
1365: $currentstring = $token->[4];
1366: } elsif ($target eq 'tex') {
1367: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1368: if (defined $basesize) {
1369: $currentstring = '{\\'.$basesize.' ';
1370: }
1371: }
1372: return $currentstring;
1373: }
1374:
1375: sub end_basefont {
1376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1377: my $currentstring = '';
1378: if ($target eq 'web' || $target eq 'webgrade') {
1379: $currentstring = $token->[4];
1380: } elsif ($target eq 'tex') {
1381: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1382: if (defined $basesize) {
1383: $currentstring = '}';
1384: }
1385: }
1386: return $currentstring;
1387: }
1388:
1389: #-- <font> tag (end tag required)
1390: sub start_font {
1391: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1392: my $currentstring = '';
1393: if ($target eq 'web' || $target eq 'webgrade') {
1394: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1395: $currentstring = $token->[4];
1396: } elsif ($target eq 'tex') {
1397: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1398: if (defined $fontsize) {
1399: $currentstring = '{\\'.$fontsize.' ';
1400: }
1401: }
1402: return $currentstring;
1403: }
1404:
1405: sub end_font {
1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1407: my $currentstring = '';
1408: if ($target eq 'web' || $target eq 'webgrade') {
1409: $currentstring = $token->[2];
1410: } elsif ($target eq 'tex') {
1411: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1412: if (defined $fontsize) {
1413: $currentstring = '}';
1414: }
1415: }
1416: return $currentstring;
1417: }
1418:
1419: #-- <strike> tag (end tag required)
1420: sub start_strike {
1421: my ($target,$token) = @_;
1422: my $currentstring = '';
1423: if ($target eq 'web' || $target eq 'webgrade') {
1424: $currentstring .= $token->[4];
1425: } elsif ($target eq 'tex') {
1426: &Apache::lonxml::startredirection();
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_strike {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web' || $target eq 'webgrade') {
1435: $currentstring .= $token->[2];
1436: } elsif ($target eq 'tex') {
1437: $currentstring=&Apache::lonxml::endredirection();
1438: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1439: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1440: $currentstring=~s/(\S)\s*$/$1\}/;
1441: }
1442: return $currentstring;
1443: }
1444:
1445: #-- <s> tag (end tag required)
1446: sub start_s {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web' || $target eq 'webgrade') {
1450: $currentstring .= $token->[4];
1451: } elsif ($target eq 'tex') {
1452: &Apache::lonxml::startredirection();
1453: }
1454: return $currentstring;
1455: }
1456:
1457: sub end_s {
1458: my ($target,$token) = @_;
1459: my $currentstring = '';
1460: if ($target eq 'web' || $target eq 'webgrade') {
1461: $currentstring .= $token->[2];
1462: } elsif ($target eq 'tex') {
1463: $currentstring=&Apache::lonxml::endredirection();
1464: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1465: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1466: $currentstring=~s/(\S)\s*$/$1\}/;
1467: }
1468: return $currentstring;
1469: }
1470:
1471: #-- <sub> tag (end tag required)
1472: sub start_sub {
1473: my ($target,$token) = @_;
1474: my $currentstring = '';
1475: if ($target eq 'web' || $target eq 'webgrade') {
1476: $currentstring .= $token->[4];
1477: } elsif ($target eq 'tex') {
1478: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_sub {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web' || $target eq 'webgrade') {
1487: $currentstring .= $token->[2];
1488: } elsif ($target eq 'tex') {
1489: $currentstring .= '}}';
1490: }
1491: return $currentstring;
1492: }
1493:
1494: #-- <sup> tag (end tag required)
1495: sub start_sup {
1496: my ($target,$token) = @_;
1497: my $currentstring = '';
1498: if ($target eq 'web' || $target eq 'webgrade') {
1499: $currentstring .= $token->[4];
1500: } elsif ($target eq 'tex') {
1501: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1502: }
1503: return $currentstring;
1504: }
1505:
1506: sub end_sup {
1507: my ($target,$token) = @_;
1508: my $currentstring = '';
1509: if ($target eq 'web' || $target eq 'webgrade') {
1510: $currentstring .= $token->[2];
1511: } elsif ($target eq 'tex') {
1512: $currentstring .= '}}';
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <hr> tag (end tag forbidden)
1518: sub start_hr {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = &end_p(); # End enclosing para.
1521: if ($target eq 'web' || $target eq 'webgrade') {
1522: $currentstring .= $token->[4];
1523: } elsif ($target eq 'tex') {
1524:
1525: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1526: #
1527: my $restart_sub = 0;
1528: my $restart_sup = 0;
1529:
1530: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1531: # using the start_ stop_ functions.. those tags only care about
1532: # $target.
1533:
1534: if (&is_inside_of($tagstack, "sub")) {
1535: $restart_sub = 1;
1536: $currentstring .= &end_sub($target, $token, $tagstack,
1537: $parstack, $parser, $safeeval);
1538: }
1539: if (&is_inside_of($tagstack, "sup")) {
1540: $restart_sup = 1;
1541: $currentstring .= &end_sup($target, $token, $tagstack,
1542: $parstack, $parser, $safeeval);
1543: }
1544:
1545: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1546: if (defined $LaTeXwidth) {
1547: if ($LaTeXwidth=~/^%/) {
1548: substr($LaTeXwidth,0,1)='';
1549: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1550: }
1551: } else {
1552: $LaTeXwidth ='0.9\textwidth';
1553: }
1554: my ($pre,$post);
1555: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1556: if (($align eq 'center') || (not defined $align)) {
1557: $pre=''; $post='';
1558: } elsif ($align eq 'left') {
1559: $pre='\rlap{'; $post='} \hfill';
1560: } elsif ($align eq 'right') {
1561: $pre=' \hfill \llap{'; $post='}';
1562: }
1563: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1564: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1565: # Turn stuff back on that we can't be inside of.
1566:
1567: if ($restart_sub) {
1568: $currentstring .= &start_sub($target, $token, $tagstack,
1569: $parstack, $parser, $safeeval);
1570: }
1571: if ($restart_sup) {
1572: $currentstring .= &start_sup($target, $token, $tagstack,
1573: $parstack, $parser, $safeeval);
1574: }
1575: }
1576: return $currentstring;
1577: }
1578:
1579: sub end_hr {
1580: my ($target,$token) = @_;
1581: my $currentstring = '';
1582: if ($target eq 'web' || $target eq 'webgrade') {
1583: $currentstring .= $token->[2];
1584: }
1585: return $currentstring;
1586: }
1587:
1588: #-- <div> tag (end tag required)
1589: {
1590:
1591: # Since div can be nested, the stack below is used
1592: # in 'tex' mode to store the ending strings
1593: # for the div stack.
1594:
1595: my @div_end_stack;
1596:
1597: sub start_div {
1598: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1599: my $currentstring = &end_p(); # Close enclosing para.
1600: if ($target eq 'web' || $target eq 'webgrade') {
1601: $currentstring .= $token->[4];
1602: }
1603: if ($target eq 'tex') {
1604: # 4 possible alignments: left, right, center, and -missing-.
1605: # If inside a table row, we must let the table logic
1606: # do the alignment, however.
1607: #
1608:
1609: my $endstring = '';
1610:
1611: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1612: $safeeval, undef, 1));
1613: if ($align eq 'center') {
1614: $currentstring .= '\begin{center}';
1615: $endstring = '\end{center}';
1616: if (&is_inside_of($tagstack, "table")) {
1617: $currentstring = ¢er_correction().$currentstring;
1618: $endstring .= ¢er_end_correction();
1619: }
1620: }
1621: elsif ($align eq 'right') {
1622: $currentstring .= '\begin{flushright}';
1623: $endstring .= '\end{flushright}';
1624: } elsif ($align eq 'left') {
1625: $currentstring .= '\begin{flushleft}';
1626: $endstring = '\end{flushleft}';
1627: } else {
1628:
1629: }
1630: $currentstring .= "\n"; # For human readability.
1631: $endstring = "\n$endstring\n"; # For human readability
1632: push(@div_end_stack, $endstring);
1633: }
1634: return $currentstring;
1635: }
1636:
1637: sub end_div {
1638: my ($target,$token) = @_;
1639: my $currentstring = '';
1640: if ($target eq 'web' || $target eq 'webgrade') {
1641: $currentstring .= $token->[2];
1642: }
1643: if ($target eq 'tex') {
1644: my $endstring = pop @div_end_stack;
1645: $currentstring .= $endstring;
1646: }
1647: return $currentstring;
1648: }
1649: }
1650:
1651: #-- <a> tag (end tag required)
1652: sub start_a {
1653: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1654: my $currentstring = '';
1655: if ($target eq 'web' || $target eq 'webgrade') {
1656: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1657: undef,1);
1658: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1659: if ($href =~ /\S/) {
1660: if ($href !~ m{^https?://}) {
1661: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1662: my $linkurl;
1663: if ($href =~ m{^/uploaded/}) {
1664: $linkurl = $href;
1665: } elsif ($href =~ m{^[^/]}) {
1666: my $path = $url;
1667: $path =~ s{[^/]*$}{};
1668: $linkurl = $path.$href;
1669: }
1670: if ($linkurl =~ m{^/uploaded/}) {
1671: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1672: if (&Apache::lonnet::is_on_map($url)) {
1673: &Apache::lonxml::extlink($linkurl);
1674: }
1675: }
1676: }
1677: }
1678: }
1679: }
1680: return $currentstring;
1681: }
1682:
1683: sub end_a {
1684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1685: my $currentstring = '';
1686: if ($target eq 'web' || $target eq 'webgrade') {
1687: $currentstring .= $token->[2];
1688: }
1689: if ($target eq 'tex') {
1690: my $href =
1691: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1692: my $name =
1693: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1694: my $uriprint =
1695: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1696: my $anchorprint =
1697: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1698: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1699: $href =~ s/([^\\])%/$1\\\%/g;
1700: # Substitute special symbols... and allow line breaks at each /
1701: #
1702: $href = &Apache::lonxml::latex_special_symbols($href);
1703: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1704: $currentstring .= ' ({\tt URI:'.$href.'})';
1705: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1706: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1707: } else {
1708: $currentstring.='';
1709: }
1710: }
1711: return $currentstring;
1712: }
1713:
1714: #-- <li> tag (end tag optional)
1715: sub start_li {
1716: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1717: my $currentstring = '';
1718: if ($target eq 'web' || $target eq 'webgrade') {
1719: $currentstring = $token->[4];
1720: } elsif ($target eq 'tex') {
1721: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1722: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1723: #FIXME need to support types i and I
1724: if ($type=~/disc/) {
1725: $currentstring .= ' \item[$\bullet$] ';
1726: } elsif ($type=~/circle/) {
1727: $currentstring .= ' \item[$\circ$] ';
1728: } elsif ($type=~/square/) {
1729: $currentstring .= ' \item[$\diamond$] ';
1730: } elsif ($type eq '1') {
1731: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1732: } elsif ($type eq 'A') {
1733: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1734: } elsif ($type eq 'a') {
1735: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1736: } elsif ($value ne '') {
1737: $currentstring .= ' \item['.$value.'] ';
1738: } else {
1739: $currentstring .= ' \item ';
1740: }
1741: $Apache::londefdef::list_index++;
1742: }
1743: return $currentstring;
1744: }
1745:
1746: sub end_li {
1747: my ($target,$token) = @_;
1748: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1749: if ($target eq 'web' || $target eq 'webgrade') {
1750: $currentstring .= $token->[2];
1751: }
1752: return $currentstring;
1753: }
1754:
1755: #-- <u> tag (end tag required)
1756: sub start_u {
1757: my ($target,$token) = @_;
1758: my $currentstring = '';
1759: if ($target eq 'web' || $target eq 'webgrade') {
1760: $currentstring .= $token->[4];
1761: } elsif ($target eq 'tex') {
1762: &Apache::lonxml::startredirection();
1763: }
1764: return $currentstring;
1765: }
1766:
1767: sub end_u {
1768: my ($target,$token) = @_;
1769: my $currentstring = '';
1770: if ($target eq 'web' || $target eq 'webgrade') {
1771: $currentstring .= $token->[2];
1772: } elsif ($target eq 'tex') {
1773: $currentstring=&Apache::lonxml::endredirection();
1774: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1775: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1776: $currentstring=~s/(\S)\s*$/$1\}/;
1777: }
1778: return $currentstring;
1779: }
1780:
1781: #-- <ul> tag (end tag required)
1782: sub start_ul {
1783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1784: my $currentstring = &end_p(); # Close off enclosing list.
1785: if ($target eq 'web' || $target eq 'webgrade') {
1786: $currentstring .= $token->[4];
1787: } elsif ($target eq 'tex') {
1788: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1789: $Apache::londefdef::list_index=0;
1790: if ($TeXtype eq 'disc') {
1791: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1792: '\renewcommand{\labelitemii}{$\bullet$}'.
1793: '\renewcommand{\labelitemiii}{$\bullet$}'.
1794: '\renewcommand{\labelitemiv}{$\bullet$}';
1795: } elsif ($TeXtype eq 'circle') {
1796: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1797: '\renewcommand{\labelitemii}{$\circ$}'.
1798: '\renewcommand{\labelitemiii}{$\circ$}'.
1799: '\renewcommand{\labelitemiv}{$\circ$}';
1800: } elsif ($TeXtype eq 'square') {
1801: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1802: '\renewcommand{\labelitemii}{$\diamond$}'.
1803: '\renewcommand{\labelitemiii}{$\diamond$}'.
1804: '\renewcommand{\labelitemiv}{$\diamond$}';
1805: }
1806: $currentstring .= '\strut \begin{itemize}';
1807: }
1808: return $currentstring;
1809: }
1810:
1811: sub end_ul {
1812: my ($target,$token) = @_;
1813: my $currentstring = '';
1814: if ($target eq 'web' || $target eq 'webgrade') {
1815: $currentstring = $token->[2];
1816: } elsif ($target eq 'tex') {
1817: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1818: '\renewcommand{\labelitemii}{$\bullet$}'.
1819: '\renewcommand{\labelitemiii}{$\bullet$}'.
1820: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1821: }
1822: return $currentstring;
1823: }
1824:
1825: #-- <menu> tag (end tag required)
1826: sub start_menu {
1827: my ($target,$token) = @_;
1828: my $currentstring = '';
1829: if ($target eq 'web' || $target eq 'webgrade') {
1830: $currentstring = $token->[4];
1831: } elsif ($target eq 'tex') {
1832: $currentstring = " \\begin{itemize} ";
1833: }
1834: return $currentstring;
1835: }
1836:
1837: sub end_menu {
1838: my ($target,$token) = @_;
1839: my $currentstring = '';
1840: if ($target eq 'web' || $target eq 'webgrade') {
1841: $currentstring = $token->[2];
1842: } elsif ($target eq 'tex') {
1843: $currentstring = " \\end{itemize}";
1844: }
1845: return $currentstring;
1846: }
1847:
1848: #-- <dir> tag (end tag required)
1849: sub start_dir {
1850: my ($target,$token) = @_;
1851: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1852: if ($target eq 'web' || $target eq 'webgrade') {
1853: $currentstring .= $token->[4];
1854: } elsif ($target eq 'tex') {
1855: $currentstring .= " \\begin{itemize} ";
1856: }
1857: return $currentstring;
1858: }
1859:
1860: sub end_dir {
1861: my ($target,$token) = @_;
1862: my $currentstring = '';
1863: if ($target eq 'web' || $target eq 'webgrade') {
1864: $currentstring = $token->[2];
1865: } elsif ($target eq 'tex') {
1866: $currentstring = " \\end{itemize}";
1867: }
1868: return $currentstring;
1869: }
1870:
1871: #-- <ol> tag (end tag required)
1872: sub start_ol {
1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1874: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1875: if ($target eq 'web' || $target eq 'webgrade') {
1876: $currentstring .= $token->[4];
1877: } elsif ($target eq 'tex') {
1878: $Apache::londefdef::list_index=0;
1879: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1880: if ($type eq '1') {
1881: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1882: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1883: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1884: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1885: } elsif ($type eq 'A') {
1886: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1887: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1888: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1889: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1890: } elsif ($type eq 'a') {
1891: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1892: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1893: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1894: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1895: } elsif ($type eq 'i') {
1896: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1897: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1898: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1899: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1900: } elsif ($type eq 'I') {
1901: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1902: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1903: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1904: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1905: }
1906: $currentstring .= '\strut \begin{enumerate}';
1907: }
1908: return $currentstring;
1909: }
1910:
1911: sub end_ol {
1912: my ($target,$token) = @_;
1913: my $currentstring = '';
1914: if ($target eq 'web' || $target eq 'webgrade') {
1915: $currentstring = $token->[2];
1916: } elsif ($target eq 'tex') {
1917: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1918: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1919: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1920: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1921: }
1922: return $currentstring;
1923: }
1924:
1925: #-- <dl> tag (end tag required)
1926: sub start_dl {
1927: my ($target,$token) = @_;
1928: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1929: if ($target eq 'web' || $target eq 'webgrade') {
1930: $currentstring .= $token->[4];
1931: } elsif ($target eq 'tex') {
1932: $currentstring .= '\begin{description}';
1933: $Apache::londefdef::DL++;
1934: push(@Apache::londefdef::description,[]);
1935: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1936: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1937: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1938: }
1939: return $currentstring;
1940: }
1941:
1942: sub end_dl {
1943: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1944: my $currentstring = '';
1945: if ($target eq 'web' || $target eq 'webgrade') {
1946: $currentstring = $token->[2];
1947: } elsif ($target eq 'tex') {
1948: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1949: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1950: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1951: $currentstring.=' '.$element.' ';
1952: }
1953: pop(@Apache::londefdef::description);
1954: $currentstring.='\end{description}';
1955: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1956: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1957: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1958: $Apache::londefdef::DL--;
1959: }
1960: return $currentstring;
1961: }
1962:
1963: #-- <dt> tag (end tag optional)
1964: sub start_dt {
1965: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1966: my $currentstring='';
1967: if ($target eq 'web' || $target eq 'webgrade') {
1968: $currentstring = $token->[4];
1969: } elsif ($target eq 'tex') {
1970: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1971: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1972: &Apache::lonxml::startredirection();
1973: $Apache::londefdef::DT[-1]++;
1974: $Apache::londefdef::seenDT[-1]=1;
1975: }
1976: return $currentstring;
1977: }
1978:
1979: sub end_dt {
1980: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1981: my $currentstring = '';
1982: if ($target eq 'web' || $target eq 'webgrade') {
1983: $currentstring = $token->[2];
1984: } elsif ($target eq 'tex') {
1985: if ($Apache::londefdef::DT[-1]) {
1986: my $data=&item_cleanup();
1987: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1988: $Apache::londefdef::DT[-1]--;
1989: }
1990: }
1991: return $currentstring;
1992: }
1993:
1994: sub item_cleanup {
1995: my $item=&Apache::lonxml::endredirection();
1996: $item=~s/\\begin{center}//g;
1997: $item=~s/\\end{center}//g;
1998: return $item;
1999: }
2000:
2001: #-- <dd> tag (end tag optional)
2002: sub start_dd {
2003: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2004: my $currentstring = '';
2005: if ($target eq 'web' || $target eq 'webgrade') {
2006: $currentstring = $token->[4];
2007: } elsif ($target eq 'tex') {
2008: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2009: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2010: if (!$Apache::londefdef::seenDT[-1]) {
2011: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2012: }
2013: push(@{$Apache::londefdef::description[-1]},'');
2014: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2015: $Apache::londefdef::DD[-1]++;
2016: &Apache::lonxml::startredirection();
2017: }
2018: return $currentstring;
2019: }
2020:
2021: sub end_dd {
2022: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2023: my $currentstring = '';
2024: if ($target eq 'web' || $target eq 'webgrade') {
2025: $currentstring = $token->[2];
2026: } elsif ($target eq 'tex') {
2027: $Apache::londefdef::description[-1]->[-1].=
2028: &Apache::lonxml::endredirection().' \vskip 0mm ';
2029: $Apache::londefdef::DD[-1]--;
2030: }
2031: return $currentstring;
2032: }
2033:
2034: #-- <table> tag (end tag required)
2035: # <table> also ends any prior <p> that is not closed.
2036: # but, unless I allow <p>'s to nest, that's the
2037: # only way I could think of to allow <p> in
2038: # <tr> <th> bodies
2039: #
2040: #list of supported attributes: border,width,TeXwidth,TeXtheme
2041: # align
2042: sub start_table {
2043: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2044: my $textwidth = '';
2045: my $currentstring = &end_p();
2046: if ($target eq 'web' || $target eq 'webgrade') {
2047: $currentstring .= $token->[4];
2048: } elsif ($target eq 'tex') {
2049: &disable_para(); # Can't have paras in a table.
2050:
2051:
2052: # New table code:
2053:
2054: # Get the parameters that we can do something about:
2055:
2056: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2057: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2058: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2059: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2060: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2061:
2062: # The only thing that needs any figuring out is the width.. and then only if it is
2063: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2064: #
2065:
2066: my $table = new Apache::lontable();
2067: if ((defined $border) && ($border > 0)) {
2068: # &Apache::lonnet::logthis("Turning on table borders: $border");
2069: $table->table_border(1);
2070: if (!defined $cell_border) {
2071: $table->cell_border(1); # Default for rules is all if rules not defined.
2072: }
2073: }
2074: # Only all or nothing for cell borders for now:
2075:
2076: if ((defined $cell_border)) {
2077: if ($cell_border eq 'all') {
2078: $table->cell_border(1);
2079: } elsif ($cell_border eq 'rows') {
2080: $table->cell_border(2);
2081: } elsif ($cell_border eq 'cols') {
2082: $table->cell_border(3);
2083: } elsif($cell_border eq 'groups') {
2084: $table->cell_border(4);
2085: } else {
2086: $table->cell_border(0);
2087: }
2088: }
2089: if (defined $theme) {
2090: $table->theme($theme);
2091: }
2092: if (defined $align) {
2093: $table->alignment($align);
2094: }
2095:
2096: # Missing width is most of page width
2097:
2098: if (!(defined $width)) {
2099: $width = '70%';
2100: }
2101:
2102: # If a percentage, need to calculate what this means in terms of
2103: # page width:
2104:
2105: if ($width =~ /%$/) {
2106: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2107: $width =~ s/%//;
2108: $width = $width * $textwidth / 100.0;
2109: $width .= " mm";
2110: $table->width($width);
2111: }
2112:
2113: push(@Apache::londefdef::table, $table);
2114: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2115:
2116: }
2117: return $currentstring;
2118: }
2119:
2120: sub end_table {
2121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2122: my $currentstring = '';
2123: if ($target eq 'web' || $target eq 'webgrade') {
2124: $currentstring = $token->[2];
2125: } elsif ($target eq 'tex') {
2126:
2127:
2128: my $table = pop(@Apache::londefdef::table);
2129: my $t = $table->generate();
2130: # &Apache::lonnet::logthis("Generating string");
2131: $currentstring = $t->generate_string();
2132: # &Apache::lonnet::logthis("Generated: $currentstring");
2133: &enable_para();
2134:
2135: }
2136: return $currentstring;
2137: }
2138:
2139: #-- <tr> tag (end tag optional)
2140: sub start_tr {
2141: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2142: my $currentstring = '';
2143: if ($target eq 'web' || $target eq 'webgrade') {
2144: $currentstring = $token->[4];
2145: } elsif ($target eq 'tex') {
2146:
2147: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2148: $Apache::londefdef::table[-1]->start_row();
2149:
2150: if ($align ne '') {
2151: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2152: }
2153:
2154: #---------------------------------------------------------------
2155: # Old table code.
2156: #---------------------------------------------------------------
2157:
2158: if (0) {
2159: $Apache::londefdef::table[-1]{'row_number'}++;
2160: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2161: if ($alignchar ne '') {
2162: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2163: } else {
2164: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2165: }
2166: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2167: #
2168: # Need to save the number of table columns to preserve the max # columns.
2169: #
2170: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2171: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2172: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2173: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2174: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2175: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2176: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2177: }
2178: }
2179: return $currentstring;
2180: }
2181:
2182: sub end_tr {
2183: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2184: my $currentstring = &end_p(); # Close any pending <p> in the row.
2185: if ($target eq 'web' || $target eq 'webgrade') {
2186: $currentstring .= $token->[2];
2187: } elsif ($target eq 'tex') {
2188:
2189: # In case the user is missing a </td> or </th> tag:
2190:
2191: if ($Apache::londefdef::TD_redirection) {
2192: &end_td_tex($parstack,$parser,$safeeval);
2193: }
2194: $Apache::londefdef::table[-1]->end_row();
2195:
2196: #-----------------------------------------------
2197: # Old table code
2198: #-----------------------------------------------
2199:
2200: if (0) {
2201: if ($Apache::londefdef::TD_redirection) {
2202: &end_td_tex($parstack,$parser,$safeeval);
2203: }
2204: # Counter columns must be the maximum number of columns seen
2205: # in the table so far so:
2206: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2207: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2208: }
2209: }
2210:
2211:
2212: }
2213: return $currentstring;
2214: }
2215:
2216: #-- <td> tag (end tag optional)
2217: sub start_td {
2218: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2219: my $currentstring = '';
2220: if ($target eq 'web' || $target eq 'webgrade') {
2221: $currentstring = $token->[4];
2222: } elsif ($target eq 'tex') {
2223: $Apache::londefdef::TD_redirection = 1;
2224: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2225: }
2226: return $currentstring;
2227: }
2228:
2229: sub tag_check {
2230: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2231: my @ar=@$parstack;
2232: for (my $i=$#ar-1;$i>=0;$i--) {
2233: if (lc($$tagstack[$i]) eq $good_tag) {
2234: &start_td_tex($parstack,$parser,$safeeval);
2235: last;
2236: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2237: splice @ar, $i+1;
2238: &end_td_tex(\@ar,$parser,$safeeval);
2239: &start_td_tex($parstack,$parser,$safeeval);
2240: last;
2241: }
2242: }
2243: return '';
2244: }
2245:
2246: #
2247: # Factor out cell configuration hash generation:
2248: #
2249:
2250: sub cell_config_hash {
2251: my ($align, $rowspan, $colspan, $width) = @_;
2252: if ($rowspan ne '') {
2253: $rowspan =~ s/^\s+|\s+$//g;
2254: }
2255: if ($colspan ne '') {
2256: $colspan =~ s/^\s+|\s+$//g;
2257: }
2258: my %config;
2259: if ($align ne '') {
2260: $config{'halign'} = $align;
2261: }
2262: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2263: $config{'colspan'} = $colspan;
2264: }
2265: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2266: $config{'rowspan'} = $rowspan;
2267: }
2268: if ($width ne '') {
2269: $config{'width'} = $width;
2270: }
2271: return \%config;
2272: }
2273:
2274: sub start_td_tex {
2275: my ($parstack,$parser,$safeeval) = @_;
2276:
2277: # At this stage, an empty cell is created with the
2278: # appropriate rowspan/colspan and alignment
2279: # attributes, but empty of text. end_td_tex will
2280: # fetch the contents from the recursive parse and
2281: # fill the cell with them:
2282: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2283: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2284: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2285: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2286: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2287:
2288: my $table = $Apache::londefdef::table[-1];
2289: $table->add_cell('', $config);
2290:
2291:
2292: #------------------------------------------------
2293: # Old table code.
2294: #------------------------------------------------
2295:
2296: if (0) {
2297:
2298: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2299: if ($alignchar eq '') {
2300: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2301: }
2302: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2303: $Apache::londefdef::table[-1]{'counter_columns'}++;
2304: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2305: if (defined $TeXwidth) {
2306: my $current_length=&recalc($TeXwidth);
2307: $current_length=~/(\d+\.?\d*)/;
2308: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2309: }
2310: }
2311: &Apache::lonxml::startredirection();
2312: return '';
2313: }
2314:
2315: sub end_td_tex {
2316:
2317: my $text = &Apache::lonxml::endredirection();
2318: my $table = $Apache::londefdef::table[-1];
2319: $table->append_cell_text($text);
2320:
2321: #-------------------------------------------------
2322: # Old table code
2323: #-------------------------------------------------
2324:
2325: if (0) {
2326: my ($parstack,$parser,$safeeval) = @_;
2327: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2328: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2329: my $data = &Apache::lonxml::endredirection();
2330:
2331: # The rowspan array of the table indicates which cells are part of a span.
2332: # n indicates the start of a span set of n rows.
2333: # ^ indicates a cell that continues a span set.
2334: # _ indicates the cell is at the bottom of a span set.
2335: # If this and subsequent cells are part of a rowspan, we must
2336: # push along the row until we find one that is not.
2337:
2338: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2339: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2340: # Part of a span.
2341: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2342: $current_column++;
2343: }
2344: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2345:
2346:
2347: # Get the column and row spans.
2348: # Colspan can be done via \multicolumn if I can figure out the data structs.
2349:
2350: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2351: if (!$colspan) {
2352: $colspan = 1;
2353: }
2354:
2355: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2356: if (!$rowspan) {
2357: $rowspan = 1;
2358: }
2359:
2360:
2361:
2362: for (my $c = 0; $c < $colspan; $c++) {
2363: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2364: for (my $i = 1; $i < $rowspan; $i++) {
2365: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2366: if ($i == ($rowspan-1)) {
2367: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2368: }
2369: }
2370: }
2371:
2372: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2373: if (defined $TeXwidth) {
2374: for (my $c = 0; $c < $colspan; $c++) {
2375: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2376: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2377: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2378: }
2379: } else {
2380: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2381: my $garbage_data=$data;
2382: my $fwidth=0;
2383: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2384: my $current_length=&recalc($1);
2385: $current_length=~/(\d+\.?\d*)/;
2386: if ($fwidth<$1) {$fwidth=$1;}
2387: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2388: }
2389: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2390: my $current_length=$1;
2391: if ($fwidth<$current_length) {$fwidth=$current_length;}
2392: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2393: }
2394: for (my $c = 0; $c < $colspan; $c++) {
2395: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2396: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2397: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2398: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2399: }
2400: } 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)*/) {
2401: my $garbage_data=$data;
2402: my $fwidth=0;
2403: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2404: my $current_length=&recalc($1);
2405: $current_length=~/(\d+\.?\d*)/;
2406: if ($fwidth<$1) {$fwidth=$1;}
2407: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2408: }
2409: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2410: my $current_length=&recalc($1);
2411: $current_length=~/(\d+\.?\d*)/;
2412: if ($fwidth<$1) {$fwidth=$1;}
2413: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2414: }
2415: for (my $c = 0; $c < $colspan; $c++) {
2416: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2417: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2418: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2419: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2420: }
2421: $data=~s/\\\\\s*$//;
2422: } else {
2423: $data=~s/^\s+(\S.*)/$1/;
2424: $data=~s/(.*\S)\s+$/$1/;
2425: $data=~s/(\s)+/$1/;
2426: my ($current_length,$min_length)=(0,0);
2427: if ($data=~/\\vskip/) {
2428: my $newdata=$data;
2429: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2430: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2431: foreach my $elementdata (@newdata) {
2432: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2433: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2434: my @words=split(/ /,$elementdata);
2435: foreach my $word (@words) {
2436: my $lengthword=2.5*&LATEX_length($word);
2437: if ($min_length<$lengthword) {$min_length=$lengthword;}
2438: }
2439: }
2440: } else {
2441: $current_length=2.5*&LATEX_length($data);
2442: my @words=split(/ /,$data);
2443: foreach my $word (@words) {
2444: my $lengthword=2*&LATEX_length($word);
2445: if ($min_length<$lengthword) {$min_length=$lengthword;}
2446: }
2447: }
2448: for (my $c = 0; $c < $colspan; $c++) {
2449: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2450: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2451: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2452: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2453: }
2454: }
2455: }
2456: # Substitute all of the tables nested in this cell in their appropriate places.
2457:
2458:
2459: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2460: for (my $in=0; $in<=$nested_count; $in++) {
2461: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2462: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2463: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2464: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2465:
2466: }
2467: # Should be be killing off the 'include' elements as they're used up?
2468:
2469: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2470:
2471:
2472:
2473:
2474: # the colspan array will indicate how many columns will be spanned by this
2475: # cell..this requires that counter_columns also be adjusted accordingly
2476: # so that the next bunch of text goes in the right cell. Note that since
2477: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2478: #
2479:
2480: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2481: for (my $i = 0; $i < ($colspan -1); $i++) {
2482: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2483: }
2484: for (my $r = 0; $r < $rowspan; $r++) {
2485: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2486: # Put empty text in spanned cols.
2487:
2488: }
2489:
2490: }
2491:
2492: return '';
2493: }
2494:
2495: sub end_td {
2496: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2497: my $currentstring = '';
2498: if ($target eq 'web' || $target eq 'webgrade') {
2499: $currentstring = $token->[2];
2500: } elsif ($target eq 'tex') {
2501: $Apache::londefdef::TD_redirection =0;
2502: &end_td_tex($parstack,$parser,$safeeval);
2503: }
2504: return $currentstring;
2505: }
2506:
2507: #-- <th> tag (end tag optional)
2508: sub start_th {
2509: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2510: my $currentstring = '';
2511: if ($target eq 'web' || $target eq 'webgrade') {
2512: $currentstring = $token->[4];
2513: } elsif ($target eq 'tex') {
2514: $Apache::londefdef::TD_redirection = 1;
2515: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2516: }
2517: return $currentstring;
2518: }
2519:
2520: sub tagg_check {
2521: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2522: my @ar=@$parstack;
2523: for (my $i=$#ar-1;$i>=0;$i--) {
2524: if (lc($$tagstack[$i]) eq $good_tag) {
2525: &start_th_tex($parstack,$parser,$safeeval);
2526: last;
2527: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2528: splice @ar, $i+1;
2529: &end_th_tex(\@ar,$parser,$safeeval);
2530: &start_th_tex($parstack,$parser,$safeeval);
2531: last;
2532: }
2533: }
2534: return '';
2535: }
2536:
2537: sub start_th_tex {
2538: my ($parstack,$parser,$safeeval) = @_;
2539:
2540: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2541: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2542: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2543:
2544: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2545: my $table = $Apache::londefdef::table[-1];
2546: $table->add_cell('\textbf{', $config);
2547:
2548: #-------------------------------------------------------------------------------------
2549: #
2550: # Old table code.
2551: #
2552: #--------------------------------------------------------------------------------------
2553:
2554: if (0) {
2555:
2556:
2557: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2558: if ($alignchar eq '') {
2559: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2560: }
2561: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2562: $Apache::londefdef::table[-1]{'counter_columns'}++;
2563: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2564: if (defined $TeXwidth) {
2565: my $current_length=&recalc($TeXwidth);
2566: $current_length=~/(\d+\.?\d*)/;
2567: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2568: }
2569: }
2570:
2571: # Accept xml until the </th> tag.
2572:
2573: &Apache::lonxml::startredirection();
2574: return '';
2575: }
2576:
2577: sub end_th_tex {
2578: my ($parstack,$parser,$safeeval) = @_;
2579:
2580: my $table = $Apache::londefdef::table[-1];
2581: my $text = &Apache::lonxml::endredirection();
2582: $table->append_cell_text($text.'}');
2583:
2584: #-----------------------------------------------------------------------------
2585: # Old table code:
2586: #-----------------------------------------------------------------------------
2587:
2588: if (0) {
2589: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2590: my $data=&Apache::lonxml::endredirection();
2591: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2592: if (defined $TeXwidth) {
2593: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2594: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2595: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2596: } else {
2597: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2598: my $garbage_data=$data;
2599: my $fwidth=0;
2600: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2601: my $current_length=&recalc($1);
2602: $current_length=~/(\d+\.?\d*)/;
2603: if ($fwidth<$1) {$fwidth=$1;}
2604: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2605: }
2606: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2607: my $current_length=$1;
2608: if ($fwidth<$current_length) {$fwidth=$current_length;}
2609: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2610: }
2611: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2612: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2613: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2614: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2615: } else {
2616: $data=~s/^\s+(\S.*)/$1/;
2617: $data=~s/(.*\S)\s+$/$1/;
2618: $data=~s/(\s)+/$1/;
2619: my ($current_length,$min_length)=(0,0);
2620: if ($data=~/\\vskip/) {
2621: my $newdata=$data;
2622: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2623: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2624: foreach my $elementdata (@newdata) {
2625: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2626: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2627: my @words=split(/ /,$elementdata);
2628: foreach my $word (@words) {
2629: my $lengthword=2.5*&LATEX_length($word);
2630: if ($min_length<$lengthword) {$min_length=$lengthword;}
2631: }
2632: }
2633: } else {
2634: $current_length=2.5*&LATEX_length($data);
2635: my @words=split(/ /,$data);
2636: foreach my $word (@words) {
2637: my $lengthword=2*&LATEX_length($word);
2638: if ($min_length<$lengthword) {$min_length=$lengthword;}
2639: }
2640: }
2641: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2642: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2643: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2644: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2645: }
2646: }
2647: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2648: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2649: }
2650: #make data bold
2651: $data='\textbf{'.$data.'}';
2652: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2653: }
2654: return'';
2655: }
2656:
2657: sub end_th {
2658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2659: my $currentstring = &end_p(); # Close any open <p> in the row.
2660: if ($target eq 'web' || $target eq 'webgrade') {
2661: $currentstring .= $token->[2];
2662: } elsif ($target eq 'tex') {
2663: $Apache::londefdef::TD_redirection =0;
2664: &end_th_tex($parstack,$parser,$safeeval);
2665: }
2666: return $currentstring;
2667: }
2668:
2669: #-- <img> tag (end tag forbidden)
2670: #
2671: # Render the <IMG> tag.
2672: # <IMG> has the following attributes (in addition to the
2673: # standard HTML ones:
2674: # TeXwrap - Governs how the tex target will try to wrap text around
2675: # horizontally aligned images.
2676: # TeXwidth - The width of the image when rendered for print (mm).
2677: # TeXheight - The height of the image when rendered for print (mm)
2678: # (Note there seems to also be support for this as a % of page size)
2679: #
2680: sub start_img {
2681: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2682: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2683: undef,1);
2684: if (! $src &&
2685: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2686: ) {
2687: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2688: return '';
2689: }
2690: &Apache::lonxml::extlink($src);
2691: my $currentstring = '';
2692: my $scaling = .3;
2693:
2694: # Render unto browsers that which are the browser's...
2695:
2696: if ($target eq 'web' || $target eq 'webgrade') {
2697: my $enc = ('yes' eq
2698: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2699: $safeeval)));
2700: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2701: $enc);
2702:
2703: # and render unto TeX that which is LaTeX
2704: } elsif ($target eq 'tex') {
2705: #
2706: # The alignment will require some superstructure to be put around
2707: # the \includegraphics stuff. At present we can only partially
2708: # simulate the alignments offered by html.
2709: #
2710: #
2711: my $align = lc(&Apache::lonxml::get_param('align',
2712: $parstack,
2713: $safeeval,
2714: undef,1));
2715: if(!$align) {
2716: $align = "bottom"; # This is html's default so it's ours too.
2717: }
2718: #
2719: &Apache::lonxml::debug("Alignemnt = $align");
2720: # LaTeX's image/text wrapping is really bad since it wants to
2721: # make figures float.
2722: # The user has the optional parameter (applicable only to l/r
2723: # alignment to use the picins/parpic directive to get wrapped text
2724: # this is also imperfect.. that's why we give them a choice...
2725: # so they can't yell at us for our choice.
2726: #
2727: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2728: $parstack,
2729: $safeeval,
2730: undef,0);
2731: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2732: if(!$latex_rendering) {
2733: $latex_rendering = "texwrap";
2734: }
2735: # using texwrap inside a table does not work. So, if after all of this,
2736: # texwrap is on, we turn it off if we detect we're in a table:
2737: #
2738: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2739: $latex_rendering = 'parpic';
2740: }
2741:
2742: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2743:
2744: #if original bmp/gif/jpg/png file exist do following:
2745: my $origsrc=$src;
2746: my ($path,$file) = &get_eps_image($src);
2747: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2748: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2749: &Apache::lonxml::debug("path = $path file = $file src = $src");
2750: if (-e $src) {
2751: &Apache::lonxml::debug("$src exists");
2752: my ($height_param,$width_param)=
2753: &image_size($origsrc,0.3,$parstack,$safeeval);
2754: my $size;
2755: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2756: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2757: # Default size if not able to extract that (e.g. eps image).
2758:
2759: # &Apache::lonnet::logthis("Size = $size");
2760:
2761: $size='['.$size;
2762: $size=~s/,$/]/;
2763: $currentstring .= '\graphicspath{{'.$path.'}}'
2764: .'\includegraphics'.$size.'{'.$file.'} ';
2765: my $closure;
2766: ($currentstring, $closure) = &align_latex_image($align,
2767: $latex_rendering,
2768: $currentstring,
2769: $width_param,
2770: $height_param);
2771: $currentstring .= $closure;
2772:
2773: } else {
2774: &Apache::lonxml::debug("$src does not exist");
2775: #original image file doesn't exist so check the alt attribute
2776: my $alt =
2777: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2778: unless ($alt) {
2779: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2780: }
2781:
2782: if ($alt) { $currentstring .= ' '.$alt.' '; }
2783: }
2784:
2785: # And here's where the semi-quote breaks down: allow the user
2786: # to edit the beast as well by rendering the problem for edit:
2787: } elsif ($target eq 'edit') {
2788: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2789: $currentstring .=&Apache::edit::tag_start($target,$token);
2790: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2791: &Apache::edit::browse('src',undef,'alt',$only).' '.
2792: &Apache::edit::search('src',undef,'alt').'<br />';
2793: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2794: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2795: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2796: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2797: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2798: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2799: ['','bottom','middle','top','left','right'],$token,5);
2800: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2801: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2802: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2803: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2804:
2805: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2806: ['no','yes'], $token, 2);
2807: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2808: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2809: }
2810: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2811: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2812: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2813: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2814:
2815: if ($token->[2]{'src'}=~/\$/) {
2816: $currentstring.=&mt('Variable image source');
2817: } elsif ($token->[2]{'src'}=~/\S/) {
2818: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2819: if ($width) { $currentstring.=' width="'.$width.'" '; }
2820: if ($height) { $currentstring.=' height="'.$height.'" '; }
2821: $currentstring .= ' />';
2822: } else {
2823: $currentstring.=&mt("No image source specified");
2824: }
2825: } elsif ($target eq 'modified') {
2826: my ($osrc,$owidth,$oheight)=
2827: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2828: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2829: $safeeval,'src','alt','align',
2830: 'TeXwidth','TeXheight', 'TeXwrap',
2831: 'width','height','encrypturl');
2832: my ($nsrc,$nwidth,$nheight)=
2833: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2834: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2835: &image_replication($loc);
2836: my ($iwidth,$iheight);
2837: if (-e $loc) {
2838: my $image = Image::Magick->new;
2839: $image->Read($loc);
2840: ($iwidth, $iheight) = ($image->Get('width'),
2841: $image->Get('height'));
2842: }
2843: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2844: # changed image or no size specified,
2845: # if they didn't explicitly change the
2846: # width or height use the ones from the image
2847: if ($iwidth && $iheight) {
2848: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2849: $token->[2]{'width'} = $iwidth;$ctag=1;
2850: }
2851: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2852: $token->[2]{'height'}=$iheight;$ctag=1;
2853: }
2854: }
2855: }
2856: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2857: # if we don't have a width or height
2858: if ($iwidth && $cwidth && !$cheight) {
2859: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2860: }
2861: if ($iheight && $cheight && !$cwidth) {
2862: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2863: }
2864: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2865: }
2866:
2867: return $currentstring;
2868: }
2869:
2870: sub end_img {
2871: my ($target,$token) = @_;
2872: my $currentstring = '';
2873: if ($target eq 'web' || $target eq 'webgrade') {
2874: $currentstring = $token->[2];
2875: } elsif ($target eq 'tex') {
2876: $currentstring = '';
2877: }
2878: return $currentstring;
2879: }
2880:
2881: #-- <applet> tag (end tag required)
2882: sub start_applet {
2883: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2884:
2885: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2886: &Apache::lonxml::extlink($code);
2887: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2888: undef,1);
2889: &Apache::lonxml::extlink($archive);
2890: my $currentstring = '';
2891: if ($target eq 'web' || $target eq 'webgrade') {
2892: $currentstring = &Apache::lonenc::encrypt_ref($token,
2893: {'code'=>$code,
2894: 'archive'=>$archive}
2895: );
2896: } elsif ($target eq 'tex') {
2897: # Turn off some stuff we can't be inside thank you LaTeX
2898:
2899: my $restart_sub = 0;
2900: my $restart_sup = 0;
2901:
2902: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2903: # using the start_ stop_ functions.. those tags only care about
2904: # $target.
2905:
2906: if (&is_inside_of($tagstack, "sub")) {
2907: $restart_sub = 1;
2908: $currentstring .= &end_sub($target, $token, $tagstack,
2909: $parstack, $parser, $safeeval);
2910: }
2911: if (&is_inside_of($tagstack, "sup")) {
2912: $restart_sup = 1;
2913: $currentstring .= &end_sup($target, $token, $tagstack,
2914: $parstack, $parser, $safeeval);
2915: }
2916:
2917: # Now process the applet; just replace it with its alt attribute.
2918:
2919: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2920: $safeeval,undef,1);
2921: unless ($alttag) {
2922: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2923: undef,1);
2924: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2925: $code);
2926: }
2927: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2928: '.}\end{center}';
2929:
2930: # Turn stuff back on that we can't be inside of.
2931:
2932: if ($restart_sub) {
2933: $currentstring .= &start_sub($target, $token, $tagstack,
2934: $parstack, $parser, $safeeval);
2935: }
2936: if ($restart_sup) {
2937: $currentstring .= &start_sup($target, $token, $tagstack,
2938: $parstack, $parser, $safeeval);
2939: }
2940: }
2941: return $currentstring;
2942: }
2943:
2944: sub end_applet {
2945: my ($target,$token) = @_;
2946: my $currentstring = '';
2947: if ($target eq 'web' || $target eq 'webgrade') {
2948: $currentstring = $token->[2];
2949: } elsif ($target eq 'tex') {
2950: }
2951: return $currentstring;
2952: }
2953:
2954: #-- <embed> tag (end tag optional/required)
2955: sub start_embed {
2956: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2957: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2958: &Apache::lonxml::extlink($src);
2959: my $currentstring = '';
2960: if ($target eq 'web' || $target eq 'webgrade') {
2961: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2962: } elsif ($target eq 'tex') {
2963: }
2964: return $currentstring;
2965: }
2966:
2967: sub end_embed {
2968: my ($target,$token) = @_;
2969: my $currentstring = '';
2970: if ($target eq 'web' || $target eq 'webgrade') {
2971: $currentstring = $token->[2];
2972: } elsif ($target eq 'tex') {
2973: # ./.
2974: }
2975: return $currentstring;
2976: }
2977:
2978: #-- <param> tag (end tag forbidden)
2979: sub start_param {
2980: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2981: if (&Apache::lonxml::get_param('name',$parstack,
2982: $safeeval,undef,1)=~/^cabbase$/i) {
2983: my $value=&Apache::lonxml::get_param('value',$parstack,
2984: $safeeval,undef,1);
2985: &Apache::lonxml::extlink($value);
2986: }
2987:
2988: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2989: &Apache::lonxml::extlink($src);
2990: my $currentstring = '';
2991: if ($target eq 'web' || $target eq 'webgrade') {
2992: my %toconvert;
2993: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2994: if ($src) { $toconvert{'src'}= $src; }
2995: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2996: undef,1);
2997: if ($name=~/^cabbase$/i) {
2998: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2999: $safeeval,undef,1);
3000: }
3001: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3002: } elsif ($target eq 'tex') {
3003: }
3004: return $currentstring;
3005: }
3006:
3007: sub end_param {
3008: my ($target,$token) = @_;
3009: my $currentstring = '';
3010: if ($target eq 'web' || $target eq 'webgrade') {
3011: $currentstring = $token->[2];
3012: } elsif ($target eq 'tex') {
3013: }
3014: return $currentstring;
3015: }
3016:
3017: #-- <allow> tag
3018: sub start_allow {
3019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3020: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3021: &Apache::lonxml::extlink($src);
3022:
3023: if ($target eq 'tex') { &image_replication($src); }
3024: my $result;
3025: if ($target eq 'edit') {
3026: $result .=&Apache::edit::tag_start($target,$token);
3027: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3028: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3029: } elsif ($target eq 'modified') {
3030: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3031: $safeeval,'src');
3032: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3033: }
3034: return $result;
3035: }
3036:
3037: sub end_allow {
3038: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3039: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3040: return '';
3041: }
3042:
3043: #-- Frames (end tag required)
3044: #-- <frameset>
3045: sub start_frameset {
3046: my ($target,$token) = @_;
3047: my $currentstring = ''; # Close any pending para.
3048: if ($target eq 'web' || $target eq 'webgrade') {
3049: $currentstring =
3050: &Apache::loncommon::start_page($Apache::londefdef::title,
3051: $Apache::londefdef::head,
3052: {'add_entries' => $token->[2],
3053: # 'no_title' => 1,
3054: 'force_register' => 1,
3055: 'frameset' => 1,});
3056:
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_frameset {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web' || $target eq 'webgrade') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <xmp> (end tag required)
3071: sub start_xmp {
3072: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web' || $target eq 'webgrade') {
3075: $currentstring .= $token->[4];
3076: } elsif ($target eq 'tex') {
3077: $currentstring .= '\begin{verbatim}';
3078: }
3079: return $currentstring;
3080: }
3081:
3082: sub end_xmp {
3083: my ($target,$token) = @_;
3084: my $currentstring = '';
3085: if ($target eq 'web' || $target eq 'webgrade') {
3086: $currentstring .= $token->[2];
3087: } elsif ($target eq 'tex') {
3088: $currentstring .= '\end{verbatim}';
3089: }
3090: return $currentstring;
3091: }
3092:
3093: #-- <pre> (end tag required)
3094: sub start_pre {
3095: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3096: my $currentstring = &end_p(); # close off pending <p>
3097: if ($target eq 'web' || $target eq 'webgrade') {
3098: $currentstring .= $token->[4];
3099: } elsif ($target eq 'tex') {
3100: $currentstring .= '\begin{verbatim}';
3101: &Apache::lonxml::disable_LaTeX_substitutions();
3102: }
3103: return $currentstring;
3104: }
3105:
3106: sub end_pre {
3107: my ($target,$token) = @_;
3108: my $currentstring = '';
3109: if ($target eq 'web' || $target eq 'webgrade') {
3110: $currentstring .= $token->[2];
3111: } elsif ($target eq 'tex') {
3112: $currentstring .= '\end{verbatim}';
3113: &Apache::lonxml::enable_LaTeX_substitutions();
3114: }
3115: return $currentstring;
3116: }
3117:
3118: #-- <insert>
3119: sub start_insert {
3120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3121: my $currentstring = '';
3122: if ($target eq 'web' || $target eq 'webgrade') {
3123: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3124: $currentstring .= '<b>'.$display.'</b>';;
3125: }
3126: return $currentstring;
3127: }
3128:
3129: sub end_insert {
3130: my ($target,$token) = @_;
3131: my $currentstring = '';
3132: if ($target eq 'web' || $target eq 'webgrade') {
3133: $currentstring .= '';
3134: }
3135: return $currentstring;
3136: }
3137:
3138: #-- <externallink>
3139: sub start_externallink {
3140: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3141: my $currentstring = '';
3142: if ($target eq 'web' || $target eq 'webgrade') {
3143: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3144: $currentstring .= '<b>'.$display.'</b>';;
3145: }
3146: return $currentstring;
3147: }
3148:
3149: sub end_externallink {
3150: my ($target,$token) = @_;
3151: my $currentstring = '';
3152: if ($target eq 'web' || $target eq 'webgrade') {
3153: $currentstring .= '';
3154: }
3155: return $currentstring;
3156: }
3157:
3158: #-- <blankspace heigth="">
3159: sub start_blankspace {
3160: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3161: my $currentstring = &end_p(); # closes off any unclosed <p>
3162: if ($target eq 'tex') {
3163: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3164: $currentstring .= '\vskip '.$howmuch.' ';
3165: }
3166: return $currentstring;
3167: }
3168:
3169: sub end_blankspace {
3170: my ($target,$token) = @_;
3171: my $currentstring = '';
3172: if ($target eq 'tex') {
3173: $currentstring .= '';
3174: }
3175: return $currentstring;
3176: }
3177:
3178: #-- <abbr> tag (end tag required)
3179: sub start_abbr {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web' || $target eq 'webgrade') {
3183: $currentstring = $token->[4];
3184: }
3185: return $currentstring;
3186: }
3187:
3188: sub end_abbr {
3189: my ($target,$token) = @_;
3190: my $currentstring = '';
3191: if ($target eq 'web' || $target eq 'webgrade') {
3192: $currentstring = $token->[2];
3193: }
3194: return $currentstring;
3195: }
3196:
3197: #-- <acronym> tag (end tag required)
3198: sub start_acronym {
3199: my ($target,$token) = @_;
3200: my $currentstring = '';
3201: if ($target eq 'web' || $target eq 'webgrade') {
3202: $currentstring = $token->[4];
3203: }
3204: return $currentstring;
3205: }
3206:
3207: sub end_acronym {
3208: my ($target,$token) = @_;
3209: my $currentstring = '';
3210: if ($target eq 'web' || $target eq 'webgrade') {
3211: $currentstring = $token->[2];
3212: }
3213: return $currentstring;
3214: }
3215:
3216: #-- <area> tag (end tag forbidden)
3217: sub start_area {
3218: my ($target,$token) = @_;
3219: my $currentstring = '';
3220: if ($target eq 'web' || $target eq 'webgrade') {
3221: $currentstring = $token->[4];
3222: }
3223: return $currentstring;
3224: }
3225:
3226: sub end_area {
3227: my ($target,$token) = @_;
3228: my $currentstring = '';
3229: if ($target eq 'web' || $target eq 'webgrade') {
3230: $currentstring = $token->[2];
3231: }
3232: return $currentstring;
3233: }
3234:
3235: #-- <base> tag (end tag forbidden)
3236: sub start_base {
3237: my ($target,$token) = @_;
3238: my $currentstring = '';
3239: if ($target eq 'web' || $target eq 'webgrade') {
3240: $currentstring = $token->[4];
3241: }
3242: return $currentstring;
3243: }
3244:
3245: sub end_base {
3246: my ($target,$token) = @_;
3247: my $currentstring = '';
3248: if ($target eq 'web' || $target eq 'webgrade') {
3249: $currentstring = $token->[2];
3250: }
3251: return $currentstring;
3252: }
3253:
3254: #-- <bdo> tag (end tag required)
3255: sub start_bdo {
3256: my ($target,$token) = @_;
3257: my $currentstring = '';
3258: if ($target eq 'web' || $target eq 'webgrade') {
3259: $currentstring = $token->[4];
3260: }
3261: return $currentstring;
3262: }
3263:
3264: sub end_bdo {
3265: my ($target,$token) = @_;
3266: my $currentstring = '';
3267: if ($target eq 'web' || $target eq 'webgrade') {
3268: $currentstring = $token->[2];
3269: }
3270: return $currentstring;
3271: }
3272:
3273: #-- <bgsound> tag (end tag optional)
3274: sub start_bgsound {
3275: my ($target,$token) = @_;
3276: my $currentstring = '';
3277: if ($target eq 'web' || $target eq 'webgrade') {
3278: $currentstring = $token->[4];
3279: }
3280: return $currentstring;
3281: }
3282:
3283: sub end_bgsound {
3284: my ($target,$token) = @_;
3285: my $currentstring = '';
3286: if ($target eq 'web' || $target eq 'webgrade') {
3287: $currentstring = $token->[2];
3288: }
3289: return $currentstring;
3290: }
3291:
3292: #-- <blink> tag (end tag required)
3293: sub start_blink {
3294: my ($target,$token) = @_;
3295: my $currentstring = '';
3296: if ($target eq 'web' || $target eq 'webgrade') {
3297: $currentstring = $token->[4];
3298: }
3299: return $currentstring;
3300: }
3301:
3302: sub end_blink {
3303: my ($target,$token) = @_;
3304: my $currentstring = '';
3305: if ($target eq 'web' || $target eq 'webgrade') {
3306: $currentstring = $token->[2];
3307: }
3308: return $currentstring;
3309: }
3310:
3311: #-- <blockquote> tag (end tag required)
3312: sub start_blockquote {
3313: my ($target,$token) = @_;
3314: my $currentstring = &end_p(); # Close any unclosed <p>
3315: if ($target eq 'web' || $target eq 'webgrade') {
3316: $currentstring .= $token->[4];
3317: }
3318: if ($target eq 'tex') {
3319: $currentstring .= '\begin{quote}';
3320: }
3321: return $currentstring;
3322: }
3323:
3324: sub end_blockquote {
3325: my ($target,$token) = @_;
3326: my $currentstring = '';
3327: if ($target eq 'web' || $target eq 'webgrade') {
3328: $currentstring = $token->[2];
3329: }
3330: if ($target eq 'tex') {
3331: $currentstring = '\end{quote}';
3332: }
3333: return $currentstring;
3334: }
3335:
3336: #-- <button> tag (end tag required)
3337: sub start_button {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web' || $target eq 'webgrade') {
3341: $currentstring = $token->[4];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: sub end_button {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web' || $target eq 'webgrade') {
3350: $currentstring = $token->[2];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: #-- <caption> tag (end tag required)
3356: sub start_caption {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web' || $target eq 'webgrade') {
3360: $currentstring = $token->[4];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: sub end_caption {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web' || $target eq 'webgrade') {
3369: $currentstring = $token->[2];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: #-- <col> tag (end tag forbdden)
3375: sub start_col {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web' || $target eq 'webgrade') {
3379: $currentstring = $token->[4];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: sub end_col {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web' || $target eq 'webgrade') {
3388: $currentstring = $token->[2];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: #-- <colgroup tag (end tag optional)
3394: sub start_colgroup {
3395: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web' || $target eq 'webgrade') {
3398: $currentstring = $token->[4];
3399: }
3400: if ($target eq 'tex') {
3401: # TODO: Ensure this tag is in a table:
3402:
3403: # Fetch the attributes and build the hash for the
3404: # call to define_colgroup.
3405:
3406: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3407: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3408:
3409: my %colgroup_params;
3410: if ($span ne '') {
3411: $colgroup_params{'span'} = $span;
3412: }
3413: if ($halign ne '') {
3414: $colgroup_params{'halign'} = $halign;
3415: }
3416:
3417: my $table = $Apache::londefdef::table[-1];
3418: $table->define_colgroup(\%colgroup_params);
3419:
3420: }
3421: return $currentstring;
3422: }
3423:
3424: sub end_colgroup {
3425: my ($target,$token) = @_;
3426: my $currentstring = '';
3427: if ($target eq 'web' || $target eq 'webgrade') {
3428: $currentstring = $token->[2];
3429: }
3430: return $currentstring;
3431: }
3432:
3433:
3434: #-- <del> tag (end tag required)
3435: sub start_del {
3436: my ($target,$token) = @_;
3437: my $currentstring = '';
3438: if ($target eq 'web' || $target eq 'webgrade') {
3439: $currentstring = $token->[4];
3440: } elsif ($target eq 'tex') {
3441: &disable_para();
3442: $currentstring .= '\st{';
3443: }
3444: return $currentstring;
3445: }
3446:
3447: sub end_del {
3448: my ($target,$token) = @_;
3449: my $currentstring = '';
3450: if ($target eq 'web' || $target eq 'webgrade') {
3451: $currentstring = $token->[2];
3452: } elsif ($target eq 'tex') {
3453: &enable_para();
3454: $currentstring = '}';
3455: }
3456: return $currentstring;
3457: }
3458:
3459: #-- <fieldset> tag (end tag required)
3460: sub start_fieldset {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web' || $target eq 'webgrade') {
3464: $currentstring = $token->[4];
3465: }
3466: return $currentstring;
3467: }
3468:
3469: sub end_fieldset {
3470: my ($target,$token) = @_;
3471: my $currentstring = '';
3472: if ($target eq 'web' || $target eq 'webgrade') {
3473: $currentstring = $token->[2];
3474: }
3475: return $currentstring;
3476: }
3477:
3478: #-- <frame> tag (end tag forbidden)
3479: sub start_frame {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web' || $target eq 'webgrade') {
3483: $currentstring = $token->[4];
3484: }
3485: return $currentstring;
3486: }
3487:
3488: sub end_frame {
3489: my ($target,$token) = @_;
3490: my $currentstring = '';
3491: if ($target eq 'web' || $target eq 'webgrade') {
3492: $currentstring = $token->[2];
3493: }
3494: return $currentstring;
3495: }
3496:
3497: #-- <iframe> tag (end tag required)
3498: sub start_iframe {
3499: my ($target,$token) = @_;
3500: my $currentstring = '';
3501: if ($target eq 'web' || $target eq 'webgrade') {
3502: $currentstring = $token->[4];
3503: }
3504: return $currentstring;
3505: }
3506:
3507: sub end_iframe {
3508: my ($target,$token) = @_;
3509: my $currentstring = '';
3510: if ($target eq 'web' || $target eq 'webgrade') {
3511: $currentstring = $token->[2];
3512: }
3513: return $currentstring;
3514: }
3515:
3516: #-- <ins> tag (end tag required)
3517: sub start_ins {
3518: my ($target,$token) = @_;
3519: my $currentstring = '';
3520: if ($target eq 'web' || $target eq 'webgrade') {
3521: $currentstring = $token->[4];
3522: }
3523: return $currentstring;
3524: }
3525:
3526: sub end_ins {
3527: my ($target,$token) = @_;
3528: my $currentstring = '';
3529: if ($target eq 'web' || $target eq 'webgrade') {
3530: $currentstring = $token->[2];
3531: }
3532: return $currentstring;
3533: }
3534:
3535: #-- <isindex> tag (end tag forbidden)
3536: sub start_isindex {
3537: my ($target,$token) = @_;
3538: my $currentstring = '';
3539: if ($target eq 'web' || $target eq 'webgrade') {
3540: $currentstring = $token->[4];
3541: }
3542: return $currentstring;
3543: }
3544:
3545: sub end_isindex {
3546: my ($target,$token) = @_;
3547: my $currentstring = '';
3548: if ($target eq 'web' || $target eq 'webgrade') {
3549: $currentstring = $token->[2];
3550: }
3551: return $currentstring;
3552: }
3553:
3554: #-- <keygen> tag (end tag forbidden)
3555: sub start_keygen {
3556: my ($target,$token) = @_;
3557: my $currentstring = '';
3558: if ($target eq 'web' || $target eq 'webgrade') {
3559: $currentstring = $token->[4];
3560: }
3561: return $currentstring;
3562: }
3563:
3564: sub end_keygen {
3565: my ($target,$token) = @_;
3566: my $currentstring = '';
3567: if ($target eq 'web' || $target eq 'webgrade') {
3568: $currentstring = $token->[2];
3569: }
3570: return $currentstring;
3571: }
3572:
3573: #-- <label> tag
3574: sub start_label {
3575: my ($target,$token) = @_;
3576: my $currentstring = '';
3577: if ($target eq 'web' || $target eq 'webgrade') {
3578: $currentstring = $token->[4];
3579: }
3580: return $currentstring;
3581: }
3582:
3583: sub end_label {
3584: my ($target,$token) = @_;
3585: my $currentstring = '';
3586: if ($target eq 'web' || $target eq 'webgrade') {
3587: $currentstring = $token->[2];
3588: }
3589: return $currentstring;
3590: }
3591:
3592: #-- <layer> tag (end tag required)
3593: sub start_layer {
3594: my ($target,$token) = @_;
3595: my $currentstring = '';
3596: if ($target eq 'web' || $target eq 'webgrade') {
3597: $currentstring = $token->[4];
3598: }
3599: return $currentstring;
3600: }
3601:
3602: sub end_layer {
3603: my ($target,$token) = @_;
3604: my $currentstring = '';
3605: if ($target eq 'web' || $target eq 'webgrade') {
3606: $currentstring = $token->[2];
3607: }
3608: return $currentstring;
3609: }
3610:
3611: #-- <legend> tag (end tag required)
3612: sub start_legend {
3613: my ($target,$token) = @_;
3614: my $currentstring = '';
3615: if ($target eq 'web' || $target eq 'webgrade') {
3616: $currentstring = $token->[4];
3617: }
3618: return $currentstring;
3619: }
3620:
3621: sub end_legend {
3622: my ($target,$token) = @_;
3623: my $currentstring = '';
3624: if ($target eq 'web' || $target eq 'webgrade') {
3625: $currentstring = $token->[2];
3626: }
3627: return $currentstring;
3628: }
3629:
3630: #-- <link> tag (end tag forbidden)
3631: sub start_link {
3632: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3633: my $currentstring = '';
3634: if ($target eq 'web' || $target eq 'webgrade') {
3635: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3636: undef,1);
3637: &Apache::lonxml::extlink($href);
3638: $currentstring = $token->[4];
3639: }
3640: return $currentstring;
3641: }
3642:
3643: sub end_link {
3644: my ($target,$token) = @_;
3645: my $currentstring = '';
3646: if ($target eq 'web' || $target eq 'webgrade') {
3647: $currentstring = $token->[2];
3648: }
3649: return $currentstring;
3650: }
3651:
3652: #-- <marquee> tag (end tag optional)
3653: sub start_marquee {
3654: my ($target,$token) = @_;
3655: my $currentstring = '';
3656: if ($target eq 'web' || $target eq 'webgrade') {
3657: $currentstring = $token->[4];
3658: }
3659: return $currentstring;
3660: }
3661:
3662: sub end_marquee {
3663: my ($target,$token) = @_;
3664: my $currentstring = '';
3665: if ($target eq 'web' || $target eq 'webgrade') {
3666: $currentstring = $token->[2];
3667: }
3668: return $currentstring;
3669: }
3670:
3671: #-- <multicol> tag (end tag required)
3672: sub start_multicol {
3673: my ($target,$token) = @_;
3674: my $currentstring = &end_p(); # Close any pending <p>
3675: if ($target eq 'web' || $target eq 'webgrade') {
3676: $currentstring .= $token->[4];
3677: }
3678: return $currentstring;
3679: }
3680:
3681: sub end_multicol {
3682: my ($target,$token) = @_;
3683: my $currentstring = '';
3684: if ($target eq 'web' || $target eq 'webgrade') {
3685: $currentstring = $token->[2];
3686: }
3687: return $currentstring;
3688: }
3689:
3690: #-- <nobr> tag (end tag required)
3691: sub start_nobr {
3692: my ($target,$token) = @_;
3693: my $currentstring = '';
3694: if ($target eq 'web' || $target eq 'webgrade') {
3695: $currentstring = $token->[4];
3696: } elsif ($target eq 'tex') {
3697: $currentstring='\mbox{';
3698: }
3699: return $currentstring;
3700: }
3701:
3702: sub end_nobr {
3703: my ($target,$token) = @_;
3704: my $currentstring = '';
3705: if ($target eq 'web' || $target eq 'webgrade') {
3706: $currentstring = $token->[2];
3707: } elsif ($target eq 'tex') {
3708: $currentstring='}';
3709: }
3710: return $currentstring;
3711: }
3712:
3713: #-- <noembed> tag (end tag required)
3714: sub start_noembed {
3715: my ($target,$token) = @_;
3716: my $currentstring = '';
3717: if ($target eq 'web' || $target eq 'webgrade') {
3718: $currentstring = $token->[4];
3719: }
3720: return $currentstring;
3721: }
3722:
3723: sub end_noembed {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web' || $target eq 'webgrade') {
3727: $currentstring = $token->[2];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: #-- <noframes> tag (end tag required)
3733: sub start_noframes {
3734: my ($target,$token) = @_;
3735: my $currentstring = '';
3736: if ($target eq 'web' || $target eq 'webgrade') {
3737: $currentstring = $token->[4];
3738: }
3739: return $currentstring;
3740: }
3741:
3742: sub end_noframes {
3743: my ($target,$token) = @_;
3744: my $currentstring = '';
3745: if ($target eq 'web' || $target eq 'webgrade') {
3746: $currentstring = $token->[2];
3747: }
3748: return $currentstring;
3749: }
3750:
3751: #-- <nolayer> tag (end tag required)
3752: sub start_nolayer {
3753: my ($target,$token) = @_;
3754: my $currentstring = '';
3755: if ($target eq 'web' || $target eq 'webgrade') {
3756: $currentstring = $token->[4];
3757: }
3758: return $currentstring;
3759: }
3760:
3761: sub end_nolayer {
3762: my ($target,$token) = @_;
3763: my $currentstring = '';
3764: if ($target eq 'web' || $target eq 'webgrade') {
3765: $currentstring = $token->[2];
3766: }
3767: return $currentstring;
3768: }
3769:
3770: #-- <noscript> tag (end tag required)
3771: sub start_noscript {
3772: my ($target,$token) = @_;
3773: my $currentstring = '';
3774: if ($target eq 'web' || $target eq 'webgrade') {
3775: $currentstring = $token->[4];
3776: }
3777: return $currentstring;
3778: }
3779:
3780: sub end_noscript {
3781: my ($target,$token) = @_;
3782: my $currentstring = '';
3783: if ($target eq 'web' || $target eq 'webgrade') {
3784: $currentstring = $token->[2];
3785: }
3786: return $currentstring;
3787: }
3788:
3789: #-- <object> tag (end tag required)
3790: sub start_object {
3791: my ($target,$token) = @_;
3792: my $currentstring = '';
3793: if ($target eq 'web' || $target eq 'webgrade') {
3794: $currentstring = $token->[4];
3795: }
3796: return $currentstring;
3797: }
3798:
3799: sub end_object {
3800: my ($target,$token) = @_;
3801: my $currentstring = '';
3802: if ($target eq 'web' || $target eq 'webgrade') {
3803: $currentstring = $token->[2];
3804: }
3805: return $currentstring;
3806: }
3807:
3808: #-- <optgroup> tag (end tag required)
3809: sub start_optgroup {
3810: my ($target,$token) = @_;
3811: my $currentstring = '';
3812: if ($target eq 'web' || $target eq 'webgrade') {
3813: $currentstring = $token->[4];
3814: }
3815: return $currentstring;
3816: }
3817:
3818: sub end_optgroup {
3819: my ($target,$token) = @_;
3820: my $currentstring = '';
3821: if ($target eq 'web' || $target eq 'webgrade') {
3822: $currentstring = $token->[2];
3823: }
3824: return $currentstring;
3825: }
3826:
3827: #-- <samp> tag (end tag required)
3828: sub start_samp {
3829: my ($target,$token) = @_;
3830: my $currentstring = '';
3831: if ($target eq 'web' || $target eq 'webgrade') {
3832: $currentstring = $token->[4];
3833: } elsif ($target eq 'tex') {
3834: $currentstring='\texttt{';
3835: }
3836: return $currentstring;
3837: }
3838:
3839: sub end_samp {
3840: my ($target,$token) = @_;
3841: my $currentstring = '';
3842: if ($target eq 'web' || $target eq 'webgrade') {
3843: $currentstring = $token->[2];
3844: } elsif ($target eq 'tex') {
3845: $currentstring='}';
3846: }
3847: return $currentstring;
3848: }
3849:
3850: #-- <server> tag
3851: sub start_server {
3852: my ($target,$token) = @_;
3853: my $currentstring = '';
3854: if ($target eq 'web' || $target eq 'webgrade') {
3855: $currentstring = $token->[4];
3856: }
3857: return $currentstring;
3858: }
3859:
3860: sub end_server {
3861: my ($target,$token) = @_;
3862: my $currentstring = '';
3863: if ($target eq 'web' || $target eq 'webgrade') {
3864: $currentstring = $token->[2];
3865: }
3866: return $currentstring;
3867: }
3868:
3869: #-- <spacer> tag (end tag forbidden)
3870: sub start_spacer {
3871: my ($target,$token) = @_;
3872: my $currentstring = &end_p(); # Close off any open <p> tag.
3873: if ($target eq 'web' || $target eq 'webgrade') {
3874: $currentstring .= $token->[4];
3875: }
3876: return $currentstring;
3877: }
3878:
3879: sub end_spacer {
3880: my ($target,$token) = @_;
3881: my $currentstring = '';
3882: if ($target eq 'web' || $target eq 'webgrade') {
3883: $currentstring = $token->[2];
3884: }
3885: return $currentstring;
3886: }
3887:
3888: #-- <span> tag (end tag required)
3889: sub start_span {
3890: my ($target,$token) = @_;
3891: my $currentstring = '';
3892: if ($target eq 'web' || $target eq 'webgrade') {
3893: $currentstring = $token->[4];
3894: }
3895: return $currentstring;
3896: }
3897:
3898: sub end_span {
3899: my ($target,$token) = @_;
3900: my $currentstring = '';
3901: if ($target eq 'web' || $target eq 'webgrade') {
3902: $currentstring = $token->[2];
3903: }
3904: return $currentstring;
3905: }
3906:
3907: #-- <tbody> tag (end tag optional)
3908: sub start_tbody {
3909: my ($target,$token) = @_;
3910: my $currentstring = '';
3911: if ($target eq 'web' || $target eq 'webgrade') {
3912: $currentstring = $token->[4];
3913: }
3914: if ($target eq 'tex') {
3915: # TODO: Ensure this tag is within a table:
3916:
3917: my $table = $Apache::londefdef::table[-1];
3918: $table->start_body();
3919: }
3920: return $currentstring;
3921: }
3922:
3923: sub end_tbody {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[2];
3928: }
3929: if($target eq 'tex') {
3930: # TODO: Ensure this tag is within a table:
3931:
3932: my $table = $Apache::londefdef::table[-1];
3933: $table->end_body();
3934: }
3935: return $currentstring;
3936: }
3937:
3938: #-- <tfoot> tag (end tag optional)
3939: sub start_tfoot {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[4];
3944: }
3945: if ($target eq 'tex') {
3946: # TODO: ensure this is within a table tag.
3947: my $table = $Apache::londefdef::table[-1];
3948: $table->start_foot();
3949: }
3950: return $currentstring;
3951: }
3952:
3953: sub end_tfoot {
3954: my ($target,$token) = @_;
3955: my $currentstring = '';
3956: if ($target eq 'web' || $target eq 'webgrade') {
3957: $currentstring = $token->[2];
3958: }
3959: if ($target eq 'tex') {
3960: # TODO: Ensure this is in side a table
3961: my $table = $Apache::londefdef::table[-1];
3962: $table->end_foot();
3963: }
3964: return $currentstring;
3965: }
3966:
3967: #-- <thead> tag (end tag optional)
3968: sub start_thead {
3969: my ($target,$token) = @_;
3970: my $currentstring = '';
3971: if ($target eq 'web' || $target eq 'webgrade') {
3972: $currentstring = $token->[4];
3973: }
3974: if ($target eq 'tex') {
3975: # Assume we're in a table... TODO: Verify that and ignore tag if not.
3976: my $table = $Apache::londefdef::table[-1];
3977: $table->start_head();
3978: }
3979: return $currentstring;
3980: }
3981:
3982: sub end_thead {
3983: my ($target,$token) = @_;
3984: my $currentstring = '';
3985: if ($target eq 'web' || $target eq 'webgrade') {
3986: $currentstring = $token->[2];
3987: }
3988: if ($target eq 'tex') {
3989: # TODO: Verify we are in a table and ignore tag if not.
3990:
3991: my $table = $Apache::londefdef::table[-1];
3992: $table->end_head();
3993: }
3994: return $currentstring;
3995: }
3996:
3997: #-- <var> tag
3998: sub start_var {
3999: my ($target,$token) = @_;
4000: my $currentstring = '';
4001: if ($target eq 'web' || $target eq 'webgrade') {
4002: $currentstring = $token->[4];
4003: } elsif ($target eq 'tex') {
4004: $currentstring = '\textit{';
4005: }
4006: return $currentstring;
4007: }
4008:
4009: sub end_var {
4010: my ($target,$token) = @_;
4011: my $currentstring = '';
4012: if ($target eq 'web' || $target eq 'webgrade') {
4013: $currentstring = $token->[2];
4014: } elsif ($target eq 'tex') {
4015: $currentstring = '}';
4016: }
4017: return $currentstring;
4018: }
4019:
4020: #-- <wbr> tag (end tag forbidden)
4021: sub start_wbr {
4022: my ($target,$token) = @_;
4023: my $currentstring = '';
4024: if ($target eq 'web' || $target eq 'webgrade') {
4025: $currentstring = $token->[4];
4026: }
4027: return $currentstring;
4028: }
4029:
4030: sub end_wbr {
4031: my ($target,$token) = @_;
4032: my $currentstring = '';
4033: if ($target eq 'web' || $target eq 'webgrade') {
4034: $currentstring = $token->[2];
4035: }
4036: return $currentstring;
4037: }
4038:
4039: #-- <hideweboutput> tag
4040: sub start_hideweboutput {
4041: my ($target,$token) = @_;
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: &Apache::lonxml::startredirection();
4044: }
4045: return '';
4046: }
4047:
4048: sub end_hideweboutput {
4049: my ($target,$token) = @_;
4050: my $currentstring = '';
4051: if ($target eq 'web' || $target eq 'webgrade') {
4052: $currentstring = &Apache::lonxml::endredirection();
4053: }
4054: return '';
4055: }
4056:
4057:
4058: sub image_replication {
4059: my $src = shift;
4060: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4061: #replicates eps or ps
4062: my $epssrc = my $pssrc = $src;
4063: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4064: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4065: if (not -e $epssrc && not -e $pssrc) {
4066: my $result=&Apache::lonnet::repcopy($epssrc);
4067: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4068: }
4069: return '';
4070: }
4071:
4072:
4073:
4074: sub resize_image {
4075: my ($height_param, $width_param, $scaling,
4076: $parstack, $safeeval, $depth, $cis) = @_;
4077:
4078: # First apply the scaling...
4079:
4080: $height_param = $height_param * $scaling;
4081: $width_param = $width_param * $scaling;
4082:
4083: #do we have any specified LaTeX size of the picture?
4084: my $toget='TeXwidth';
4085: if ($cis) {
4086: $toget=lc($toget);
4087: }
4088: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4089: $safeeval,$depth,$cis);
4090: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4091: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4092: $safeeval,$depth,$cis);
4093: #do we have any specified web size of the picture?
4094: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4095: $depth,1);
4096: if ($TeXwidth) {
4097: my $old_width_param=$width_param;
4098: if ($TeXwidth=~/(\d+)\s*\%/) {
4099: $width_param = $1*$env{'form.textwidth'}/100;
4100: } else {
4101: $width_param = $TeXwidth;
4102: }
4103: if ($TeXheight) {
4104: $height_param = $TeXheight;
4105: } elsif ($old_width_param) {
4106: $height_param=$TeXwidth/$old_width_param*$height_param;
4107: }
4108: } elsif ($TeXheight) {
4109: $height_param = $TeXheight;
4110: if ($height_param) {
4111: $width_param = $TeXheight/$height_param*$width_param;
4112: }
4113: } elsif ($width) {
4114: my $old_width_param=$width_param;
4115: $width_param = $width*$scaling;
4116: if ($old_width_param) {
4117: $height_param=$width_param/$old_width_param*$height_param;
4118: }
4119: }
4120: if ($width_param > $env{'form.textwidth'}) {
4121: my $old_width_param=$width_param;
4122: $width_param =0.95*$env{'form.textwidth'};
4123: if ($old_width_param) {
4124: $height_param=$width_param/$old_width_param*$height_param;
4125: }
4126: }
4127:
4128: return ($height_param, $width_param);
4129: }
4130:
4131: sub image_size {
4132: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4133:
4134: #size of image from gif/jpg/jpeg/png
4135: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4136: if (-e $ressrc) {
4137: $src = $ressrc;
4138: }
4139: my $image = Image::Magick->new;
4140: my $current_figure = $image->Read($src);
4141: my $width_param = $image->Get('width');
4142: my $height_param = $image->Get('height');
4143: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4144: undef($image);
4145:
4146: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4147: $scaling, $parstack, $safeeval,
4148: $depth, $cis);
4149:
4150: return ($height_param, $width_param);
4151: }
4152:
4153: sub image_width {
4154: my ($height, $width) = &image_size(@_);
4155: return $width;
4156: }
4157: # Not yet 100% sure this is correct in all circumstances..
4158: # due to my uncertainty about mods to image_size.
4159: #
4160: sub image_height {
4161: my ($height, $width) = &image_size(@_);
4162: return $height;
4163: }
4164:
4165: sub get_eps_image {
4166: my ($src)=@_;
4167: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4168:
4169: # In order to prevent the substitution of the alt text, we need to
4170: # be sure the orig_src file is on system now so:
4171:
4172: if (! -e $orig_src) {
4173: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4174: }
4175: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4176: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4177: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4178: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4179: &Apache::lonxml::debug("Filelocation gives: $src");
4180: if (! -e $src) {
4181: &Apache::lonxml::debug("$src does not exist");
4182: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4183: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4184: #if replication failed try to find ps file
4185: $src=~s/\.eps$/\.ps/;
4186: &Apache::lonxml::debug("Now looking for $src");
4187: #if no ps file try to replicate it.
4188: my $didrepcopy = &Apache::lonnet::repcopy($src);
4189: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4190: if ( (not -e $src) ||
4191: ($didrepcopy ne 'ok')) {
4192: &Apache::lonxml::debug("Failed to find or replicate $src");
4193:
4194: #if replication failed try to produce eps file dynamically
4195: $src=~s/\.ps$/\.eps/;
4196: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4197: my $newsrc=$orig_src;
4198: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4199: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4200: print FILE ("$newsrc\n");
4201: close(FILE);
4202: }
4203: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4204: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4205: if ($sext ne "") { # Put the ext. back in to uniquify.
4206: $src =~ s/\.eps$/$sext.eps/;
4207: }
4208:
4209: }
4210:
4211: }
4212: } else {
4213: # If the postscript file has spaces in its name,
4214: # LaTeX will gratuitiously vomit. Therefore
4215: # queue such files for copy with " " replaced by "_".
4216: # printout.pm will know them by their .ps or .eps extensions.
4217: my $newsrc = $orig_src;
4218: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4219: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4220: print FILE "$src\n";
4221: close FILE;
4222: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4223: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4224: }
4225: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4226: $path =~ s/ /\_/g;
4227: $file =~ s/ /\_/g;
4228: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4229: return ($path.'/',$file);
4230: }
4231:
4232: sub eps_generation {
4233: my ($src,$file,$width_param) = @_;
4234: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4235: if (open(my $tmpfile,">>$filename")) {
4236: print $tmpfile "$src\n";
4237: close($tmpfile);
4238: }
4239: my $newsrc = $src;
4240: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4241: $newsrc=~s{/home/httpd/html/res}{};
4242: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4243: $newsrc=~s{/\./}{/};
4244: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4245: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4246: $newsrc=~s{/home/httpd/lonUsers}{};
4247: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4248: }
4249: if ($newsrc=~m{/userfiles/}) {
4250: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4251: } else {
4252: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4253: }
4254: }
4255:
4256: sub file_path {
4257: my $src=shift;
4258: my ($file,$path);
4259: if ($src =~ m!(.*)/([^/]*)$!) {
4260: $file = $2;
4261: $path = $1.'/';
4262: }
4263: return $file,$path;
4264: }
4265:
4266:
4267: sub recalc {
4268: my $argument = shift;
4269: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4270: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4271: my $value=$1;
4272: my $units=$2;
4273: if ($units eq 'cm') {
4274: $value*=10;
4275: } elsif ($units eq 'in') {
4276: $value*=25.4;
4277: } elsif ($units eq 'pc') {
4278: $value*=(25.4*12/72.27);
4279: } elsif ($units eq 'pt') {
4280: $value*=(25.4/72.27);
4281: }
4282: return $value.' mm';
4283: }
4284:
4285: sub LATEX_length {
4286: my $garbage=shift;
4287: $garbage=~s/^\s+$//;
4288: $garbage=~s/^\s+(\S.*)/$1/;#space before
4289: $garbage=~s/(.*\S)\s+$/$1/;#space after
4290: $garbage=~s/(\s)+/$1/;#only one space
4291: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4292: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4293: $garbage=~s/([^\\])\$/$1/g;#$
4294: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4295: $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;
4296: $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;
4297: $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;
4298: $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;
4299: $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;
4300: $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;
4301: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4302: #remove some other LaTeX command
4303: $garbage=~s|\\(\w+)\\|\\|g;
4304: $garbage=~s|\\(\w+)(\s*)|$2|g;
4305: $garbage=~s|\+|11|g;
4306: my $value=length($garbage);
4307: return $value;
4308: }
4309:
4310:
4311: sub align_latex_image {
4312: my ($align, $latex_rendering, $image, $width, $height) = @_;
4313: my $currentstring; # The 1/2 wrapped image.
4314: my $closure; # The closure of the wrappage.
4315:
4316: # if it's none just return it back
4317: if ($latex_rendering eq 'none') {
4318: return ($image,'');
4319: }
4320:
4321: # If there's an alignment specification we need to honor it here.
4322: # For the horizontal alignments, we will also honor the
4323: # value of the latex specfication. The default is parbox,
4324: # and that's used for illegal values too.
4325: #
4326: # Even though we set a default alignment value, the user
4327: # could have given us an illegal value. In that case we
4328: # just use the default alignment of bottom..
4329: $currentstring = '';
4330: if ($align eq "top") {
4331: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4332: $closure = '}';
4333: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4334: my $offset = $height/2;
4335: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4336: $closure = '}';
4337: } elsif ($align eq "left") {
4338: if ($latex_rendering eq "parpic") {
4339: $currentstring .= '\parpic[l]{'.$image;
4340: $closure = '}';
4341: } elsif ($latex_rendering eq "parbox") {
4342: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4343: .$image;
4344: $closure = '\end{minipage}';
4345: } elsif ($latex_rendering eq "wrapfigure"
4346: || $latex_rendering ne 'none') { # wrapfig render
4347: $currentstring .=
4348: '\begin{wrapfigure}{l}{'.$width.'mm}'
4349: .'\scalebox{1.0}{'.$image;
4350: $closure = '}\end{wrapfigure}';
4351: }
4352: } elsif ($align eq "right") {
4353: if ($latex_rendering eq "parpic") {
4354: $currentstring .= '\parpic[r]{'.$image;
4355: $closure = '}';
4356: } elsif ($latex_rendering eq "parbox") {
4357: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4358: .$image;
4359: $closure = '\end{minipage}';
4360: } elsif ($latex_rendering eq "wrapfigure"
4361: || $latex_rendering ne 'none') { # wrapfig render
4362: $currentstring .=
4363: '\begin{wrapfigure}{r}{'.$width.'mm}'
4364: .'\scalebox{1.0}{'.$image;
4365: $closure = '}\end{wrapfigure}';
4366: }
4367: } else { # Bottom is also default.
4368: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4369: $currentstring .= "{$image";
4370: $closure = '}';
4371: }
4372: return ($currentstring, $closure);
4373: }
4374:
4375:
4376: sub is_inside_of {
4377: my ($tagstack, $tag) = @_;
4378: my @stack = @$tagstack;
4379: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4380: if ($stack[$i] eq $tag) {
4381: return 1;
4382: }
4383: }
4384: return 0;
4385: }
4386:
4387:
4388: #
4389: # This sub provides the typical LaTeX prefix matter for tex output:
4390: #
4391: sub latex_header {
4392: my ($mode) = @_;
4393: my $currentstring = '';
4394:
4395: $currentstring .=
4396: "\n% &Apache::lonxml::londefdef \n" .
4397: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4398: if (($env{'form.latex_type'}=~'batchmode') ||
4399: (!$env{'request.role.adv'}) ||
4400: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4401: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4402: '\renewcommand{\deg}{$^{\circ}$}'.
4403: '\usepackage{multirow}'.
4404: '\usepackage{longtable}'.
4405: '\usepackage{textcomp}'.
4406: '\usepackage{makeidx}'.
4407: '\usepackage[dvips]{graphicx}'.
4408: '\usepackage{wrapfig}'.
4409: '\usepackage{picins}'.
4410: '\usepackage[T1]{fontenc}'."\n".
4411: '\usepackage{lmodern}'."\n".
4412: '\usepackage[postscript]{ucs}'."\n".
4413: '\usepackage[utf8x]{inputenc}'."\n".
4414: '\usepackage{pifont}' ."\n".
4415: '\usepackage{latexsym}'."\n".
4416: '\usepackage{epsfig}'.
4417: "\\usepackage{xtab}\n".
4418: "\\usepackage{tabularx}\n".
4419: "\\usepackage{booktabs}\n".
4420: "\\usepackage{array}\n".
4421: "\\usepackage{colortbl}\n".
4422: "\\usepackage{xcolor}\n".
4423: '\usepackage{calc}'.
4424: '\usepackage{amsmath}'.
4425: '\usepackage{soul}',
4426: '\usepackage{amssymb}'.
4427: '\usepackage{amsfonts}'.
4428: '\usepackage{amsthm}'.
4429: '\usepackage{amscd}'
4430: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4431: '\usepackage[T1]{fontenc}'."\n".
4432: '\usepackage{lmodern}'."\n".
4433: '\usepackage[postscript]{ucs}'."\n".
4434: '\usepackage[utf8x]{inputenc}'."\n".
4435: '\usepackage{pifont}' . "\n";
4436:
4437: if($env{'form.pdfFormFields'} eq 'yes') {
4438: $currentstring .= '\usepackage{hyperref}'.
4439: '\usepackage{eforms}'.
4440: '\usepackage{tabularx}';
4441: }
4442:
4443: $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}}'.
4444: '\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}}';
4445: $currentstring .= '\begin{document}';
4446:
4447: return $currentstring;
4448:
4449: }
4450:
4451: =pod
4452:
4453: =head1 NAME
4454:
4455: Apache::londefdef.pm
4456:
4457: =head1 SYNOPSIS
4458:
4459: Tags Default Definition Module
4460:
4461: This is part of the LearningOnline Network with CAPA project
4462: described at http://www.lon-capa.org.
4463:
4464:
4465: =head1 NOTABLE SUBROUTINES
4466:
4467: =over
4468:
4469: =item start_hideweboutput()
4470:
4471: =item end_hideweboutput()
4472:
4473: =item image_replication()
4474:
4475: =item resize_image()
4476:
4477: Get correct sizing parameter for an image given
4478: it's initial ht. and wid. This allows sizing of
4479: images that are generated on-the-fly (e.g. gnuplot)
4480: as well as serving as a utility for image_size.
4481:
4482: Parameter:
4483: height_param
4484: width_param - Initial picture dimensions.
4485: scaling - A scale factor.
4486: parstack, - the current stack of tag attributes
4487: from the xml parser
4488: safeeval, - pointer to the safespace
4489: depth, - from what level in the stack to look for attributes
4490: (assumes -1 if unspecified)
4491: cis - look for attrubutes case insensitively
4492: (assumes false)
4493:
4494: Returns:
4495: height, width - new dimensions.
4496:
4497: =item image_size()
4498:
4499: =item image_width()
4500:
4501: =item image_height()
4502:
4503: =item get_eps_image()
4504:
4505: =item eps_generation()
4506:
4507: =item file_path()
4508:
4509: =item recalc()
4510:
4511: Converts a measurement in to mm from any of
4512: the other valid LaTeX units of measure.
4513: If the units of measure are missing from the
4514: parameter, it is assumed to be in and returned
4515: with mm units of measure
4516:
4517: =item LATEX_length()
4518:
4519: =item align_latex_image()
4520:
4521: Wrap image 'stuff' inside of the LaTeX required to implement
4522: alignment:
4523: align_tex_image(align, latex_rendering, image)
4524: Where:
4525: align - The HTML alignment specification.
4526: latex_rendering - rendering hint for latex.
4527: image - The LaTeX needed to insert the image itsef.
4528: width,height - dimensions of the image.
4529: Returns:
4530: The 1/2 wrapped image and the stuff required to close the
4531: wrappage. This allows e.g. randomlabel to insert more stuff
4532: into the closure.
4533:
4534:
4535: =item is_inside_of($tagstack, $tag)
4536: This sub returns true if the current state of Xml processing is inside of the tag.
4537: Parameters:
4538: tagstack - The tagstack from the parser.
4539: tag - The tag (without the <>'s.).
4540: Sample usage:
4541: if (is_inside_of($tagstack "table")) {
4542: I'm in a table....
4543: }
4544:
4545:
4546:
4547: =back
4548:
4549: =cut
4550:
4551:
4552: 1;
4553: __END__
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