1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.437 2012/02/05 22:53:42 raeburn Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::loncommon();
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: if ($env{'form.grade_imsexport'}) {
387: $currentstring = '';
388: }
389: } elsif ($target eq 'meta') {
390: unless (&Apache::lonxml::get_param
391: ('http-equiv',$parstack,$safeeval,undef,1)) {
392: my $name=$token->[2]->{'name'};
393: $name=~tr/A-Z/a-z/;
394: $name=~s/\s/\_/gs;
395: $name=~s/\W//gs;
396: if ($name) {
397: $currentstring='<'.$name;
398: my $display=&Apache::lonxml::get_param
399: ('display',$parstack,$safeeval,undef,1);
400: if ($display) {
401: $display=~s/\"/\'/g;
402: $currentstring.=' display="'.$display.'"';
403: }
404: $currentstring.='>'.
405: &Apache::lonxml::get_param
406: ('content',$parstack,$safeeval,undef,1).
407: '</'.$name.'>';
408: }
409: my $display=&Apache::lonxml::get_param
410: ('display',$parstack,$safeeval,undef,1);
411: if ($display) {
412: $display=&HTML::Entities::encode($display,'<>&"');
413: $currentstring.='<'.$name.'.display>'.$display.
414: '</'.$name.'.display>';
415: }
416: }
417: } elsif ($target eq 'tex') {
418: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
419: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
420: if ((not defined $content) && (not defined $name)) {
421: &Apache::lonxml::startredirection();
422: }
423: } elsif ($target eq 'edit') {
424: $currentstring .= &Apache::edit::tag_start($target,$token);
425: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
426: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
427: $currentstring .= &Apache::edit::end_row();
428: } elsif ($target eq 'modified') {
429: my $constructtag =
430: &Apache::edit::get_new_args($token,$parstack,$safeeval,
431: 'name','content');
432: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
433: }
434: return $currentstring;
435: }
436:
437: sub end_meta {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
439: my $currentstring = '';
440: if ($target eq 'web' || $target eq 'webgrade') {
441: my $args='';
442: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
443: if ($args ne '') {
444: $currentstring = $token->[4];
445: }
446: } elsif ($target eq 'tex') {
447: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
448: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
449: if ((not defined $content) && (not defined $name)) {
450: &Apache::lonxml::endredirection();
451: }
452: }
453: return $currentstring;
454: }
455:
456: sub insert_meta {
457: return '
458: <meta />';
459: }
460:
461: # accessrule
462: sub start_accessrule {
463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
464: my $currentstring = '';
465: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
466: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
467: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
468: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
469:
470: my ($dom,$crs,$sec,$separator);
471: if ($type eq 'user') {
472: ($dom,$crs,$sec)=split(m{/},$realm);
473: $crs = &LONCAPA::clean_username($crs);
474: $separator = '/';
475: } else {
476: ($dom,$crs,$sec)=split(/\_/,$realm);
477: $crs = &LONCAPA::clean_courseid($crs);
478: $separator = '_';
479: }
480: $dom = &LONCAPA::clean_domain($dom);
481:
482: $sec =~s/\W//;
483: $realm = $dom;
484: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
485: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
486: $role=~s/\W//g;
487:
488: if ($target eq 'web') {
489: my $args='';
490: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
491: if ($args eq '') {
492: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
493: } else {
494: $currentstring = $token->[4];
495: }
496: }
497: if ($target eq 'meta') {
498: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
499: }
500: return $currentstring;
501: }
502:
503: sub end_accessrule {
504: my ($target,$token,$tagstack,$parstack,$parser) = @_;
505: my $currentstring = '';
506: if ($target eq 'web') {
507: my $args='';
508: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
509: if ($args ne '') {
510: $currentstring = $token->[4];
511: }
512: }
513: return $currentstring;
514: }
515:
516: sub generate_css_links {
517: my $links;
518: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
519: if ($css_href =~ /\S/) {
520: &Apache::lonxml::extlink($css_href);
521: $links .=
522: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
523: }
524: return $links;
525: }
526:
527: #-- <body> tag (end tag required)
528: sub start_body {
529: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
530: my $currentstring = '';
531:
532: if ($target eq 'web' || $target eq 'webgrade') {
533: if ($Apache::lonhomework::parsing_a_problem) {
534: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
535: return '';
536: }
537:
538: if (&is_inside_of($tagstack, "head")) {
539: &end_head(@_);
540: }
541:
542: my $extra_head = &generate_css_links();
543:
544: # Breadcrumbs
545: &Apache::lonhtmlcommon::clear_breadcrumbs();
546: if ($env{'request.state'} eq 'construct') {
547: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'Construction Space',
550: 'href' => &Apache::loncommon::authorspace($url),
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: # Get the parameters that we can do something about:
2052:
2053: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2054: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2055: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2056: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2057: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2058:
2059: # The only thing that needs any figuring out is the width.. and then only if it is
2060: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2061: #
2062:
2063: my $table = new Apache::lontable();
2064: if ((defined $border) && ($border > 0)) {
2065: # &Apache::lonnet::logthis("Turning on table borders: $border");
2066: $table->table_border(1);
2067: if (!defined $cell_border) {
2068: $table->cell_border(1); # Default for rules is all if rules not defined.
2069: }
2070: }
2071:
2072: if ((defined $cell_border)) {
2073: if ($cell_border eq 'all') {
2074: $table->cell_border(1);
2075: } elsif ($cell_border eq 'rows') {
2076: $table->cell_border(2);
2077: } elsif ($cell_border eq 'cols') {
2078: $table->cell_border(3);
2079: } elsif($cell_border eq 'groups') {
2080: $table->cell_border(4);
2081: } else {
2082: $table->cell_border(0);
2083: }
2084: }
2085: if (defined $theme) {
2086: $table->theme($theme);
2087: }
2088: if (defined $align) {
2089: $table->alignment($align);
2090: }
2091:
2092: # Missing width is most of page width
2093:
2094: if (!(defined $width)) {
2095: $width = '70%';
2096: }
2097:
2098: # If a percentage, need to calculate what this means in terms of
2099: # page width:
2100:
2101: if ($width =~ /%$/) {
2102: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2103: $width =~ s/%//;
2104: $width = $width * $textwidth / 100.0;
2105: $width .= " mm";
2106: $table->width($width);
2107: }
2108:
2109: push(@Apache::londefdef::table, $table);
2110: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2111:
2112: }
2113: return $currentstring;
2114: }
2115:
2116: sub end_table {
2117: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2118: my $currentstring = '';
2119: if ($target eq 'web' || $target eq 'webgrade') {
2120: $currentstring = $token->[2];
2121: } elsif ($target eq 'tex') {
2122:
2123:
2124: my $table = pop(@Apache::londefdef::table);
2125: my $t = $table->generate();
2126: # &Apache::lonnet::logthis("Generating string");
2127: $currentstring = $t->generate_string();
2128: # &Apache::lonnet::logthis("Generated: $currentstring");
2129: &enable_para();
2130:
2131: }
2132: return $currentstring;
2133: }
2134:
2135: #-- <tr> tag (end tag optional)
2136: sub start_tr {
2137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2138: my $currentstring = '';
2139: if ($target eq 'web' || $target eq 'webgrade') {
2140: $currentstring = $token->[4];
2141: } elsif ($target eq 'tex') {
2142:
2143: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2144: $Apache::londefdef::table[-1]->start_row();
2145:
2146: if ($align ne '') {
2147: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2148: }
2149:
2150: #---------------------------------------------------------------
2151: # Old table code.
2152: #---------------------------------------------------------------
2153:
2154: if (0) {
2155: $Apache::londefdef::table[-1]{'row_number'}++;
2156: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2157: if ($alignchar ne '') {
2158: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2159: } else {
2160: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2161: }
2162: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2163: #
2164: # Need to save the number of table columns to preserve the max # columns.
2165: #
2166: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2167: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2168: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2169: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2170: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2171: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2172: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2173: }
2174: }
2175: return $currentstring;
2176: }
2177:
2178: sub end_tr {
2179: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2180: my $currentstring = &end_p(); # Close any pending <p> in the row.
2181: if ($target eq 'web' || $target eq 'webgrade') {
2182: $currentstring .= $token->[2];
2183: } elsif ($target eq 'tex') {
2184:
2185: # In case the user is missing a </td> or </th> tag:
2186:
2187: if ($Apache::londefdef::TD_redirection) {
2188: &end_td_tex($parstack,$parser,$safeeval);
2189: }
2190: $Apache::londefdef::table[-1]->end_row();
2191:
2192: #-----------------------------------------------
2193: # Old table code
2194: #-----------------------------------------------
2195:
2196: if (0) {
2197: if ($Apache::londefdef::TD_redirection) {
2198: &end_td_tex($parstack,$parser,$safeeval);
2199: }
2200: # Counter columns must be the maximum number of columns seen
2201: # in the table so far so:
2202: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2203: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2204: }
2205: }
2206:
2207:
2208: }
2209: return $currentstring;
2210: }
2211:
2212: #-- <td> tag (end tag optional)
2213: sub start_td {
2214: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2215: my $currentstring = '';
2216: if ($target eq 'web' || $target eq 'webgrade') {
2217: $currentstring = $token->[4];
2218: } elsif ($target eq 'tex') {
2219: $Apache::londefdef::TD_redirection = 1;
2220: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2221: }
2222: return $currentstring;
2223: }
2224:
2225: sub tag_check {
2226: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2227: my @ar=@$parstack;
2228: for (my $i=$#ar-1;$i>=0;$i--) {
2229: if (lc($$tagstack[$i]) eq $good_tag) {
2230: &start_td_tex($parstack,$parser,$safeeval);
2231: last;
2232: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2233: splice @ar, $i+1;
2234: &end_td_tex(\@ar,$parser,$safeeval);
2235: &start_td_tex($parstack,$parser,$safeeval);
2236: last;
2237: }
2238: }
2239: return '';
2240: }
2241:
2242: #
2243: # Factor out cell configuration hash generation:
2244: #
2245:
2246: sub cell_config_hash {
2247: my ($align, $rowspan, $colspan, $width) = @_;
2248: if ($rowspan ne '') {
2249: $rowspan =~ s/^\s+|\s+$//g;
2250: }
2251: if ($colspan ne '') {
2252: $colspan =~ s/^\s+|\s+$//g;
2253: }
2254: my %config;
2255: if ($align ne '') {
2256: $config{'halign'} = $align;
2257: }
2258: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2259: $config{'colspan'} = $colspan;
2260: }
2261: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2262: $config{'rowspan'} = $rowspan;
2263: }
2264: if ($width ne '') {
2265: $config{'width'} = $width;
2266: }
2267: return \%config;
2268: }
2269:
2270: sub start_td_tex {
2271: my ($parstack,$parser,$safeeval) = @_;
2272:
2273: # At this stage, an empty cell is created with the
2274: # appropriate rowspan/colspan and alignment
2275: # attributes, but empty of text. end_td_tex will
2276: # fetch the contents from the recursive parse and
2277: # fill the cell with them:
2278: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2279: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2280: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2281: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2282: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2283:
2284: my $table = $Apache::londefdef::table[-1];
2285: $table->add_cell('', $config);
2286:
2287:
2288: #------------------------------------------------
2289: # Old table code.
2290: #------------------------------------------------
2291:
2292: if (0) {
2293:
2294: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2295: if ($alignchar eq '') {
2296: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2297: }
2298: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2299: $Apache::londefdef::table[-1]{'counter_columns'}++;
2300: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2301: if (defined $TeXwidth) {
2302: my $current_length=&recalc($TeXwidth);
2303: $current_length=~/(\d+\.?\d*)/;
2304: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2305: }
2306: }
2307: &Apache::lonxml::startredirection();
2308: return '';
2309: }
2310:
2311: sub end_td_tex {
2312:
2313: my $text = &Apache::lonxml::endredirection();
2314: my $table = $Apache::londefdef::table[-1];
2315: $table->append_cell_text($text);
2316:
2317: #-------------------------------------------------
2318: # Old table code
2319: #-------------------------------------------------
2320:
2321: if (0) {
2322: my ($parstack,$parser,$safeeval) = @_;
2323: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2324: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2325: my $data = &Apache::lonxml::endredirection();
2326:
2327: # The rowspan array of the table indicates which cells are part of a span.
2328: # n indicates the start of a span set of n rows.
2329: # ^ indicates a cell that continues a span set.
2330: # _ indicates the cell is at the bottom of a span set.
2331: # If this and subsequent cells are part of a rowspan, we must
2332: # push along the row until we find one that is not.
2333:
2334: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2335: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2336: # Part of a span.
2337: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2338: $current_column++;
2339: }
2340: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2341:
2342:
2343: # Get the column and row spans.
2344: # Colspan can be done via \multicolumn if I can figure out the data structs.
2345:
2346: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2347: if (!$colspan) {
2348: $colspan = 1;
2349: }
2350:
2351: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2352: if (!$rowspan) {
2353: $rowspan = 1;
2354: }
2355:
2356:
2357:
2358: for (my $c = 0; $c < $colspan; $c++) {
2359: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2360: for (my $i = 1; $i < $rowspan; $i++) {
2361: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2362: if ($i == ($rowspan-1)) {
2363: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2364: }
2365: }
2366: }
2367:
2368: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2369: if (defined $TeXwidth) {
2370: for (my $c = 0; $c < $colspan; $c++) {
2371: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2372: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2374: }
2375: } else {
2376: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2377: my $garbage_data=$data;
2378: my $fwidth=0;
2379: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2380: my $current_length=&recalc($1);
2381: $current_length=~/(\d+\.?\d*)/;
2382: if ($fwidth<$1) {$fwidth=$1;}
2383: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2384: }
2385: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2386: my $current_length=$1;
2387: if ($fwidth<$current_length) {$fwidth=$current_length;}
2388: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2389: }
2390: for (my $c = 0; $c < $colspan; $c++) {
2391: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2392: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2393: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2394: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2395: }
2396: } 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)*/) {
2397: my $garbage_data=$data;
2398: my $fwidth=0;
2399: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2400: my $current_length=&recalc($1);
2401: $current_length=~/(\d+\.?\d*)/;
2402: if ($fwidth<$1) {$fwidth=$1;}
2403: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2404: }
2405: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2406: my $current_length=&recalc($1);
2407: $current_length=~/(\d+\.?\d*)/;
2408: if ($fwidth<$1) {$fwidth=$1;}
2409: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2410: }
2411: for (my $c = 0; $c < $colspan; $c++) {
2412: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2413: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2414: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2415: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2416: }
2417: $data=~s/\\\\\s*$//;
2418: } else {
2419: $data=~s/^\s+(\S.*)/$1/;
2420: $data=~s/(.*\S)\s+$/$1/;
2421: $data=~s/(\s)+/$1/;
2422: my ($current_length,$min_length)=(0,0);
2423: if ($data=~/\\vskip/) {
2424: my $newdata=$data;
2425: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2426: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2427: foreach my $elementdata (@newdata) {
2428: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2429: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2430: my @words=split(/ /,$elementdata);
2431: foreach my $word (@words) {
2432: my $lengthword=2.5*&LATEX_length($word);
2433: if ($min_length<$lengthword) {$min_length=$lengthword;}
2434: }
2435: }
2436: } else {
2437: $current_length=2.5*&LATEX_length($data);
2438: my @words=split(/ /,$data);
2439: foreach my $word (@words) {
2440: my $lengthword=2*&LATEX_length($word);
2441: if ($min_length<$lengthword) {$min_length=$lengthword;}
2442: }
2443: }
2444: for (my $c = 0; $c < $colspan; $c++) {
2445: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2446: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2447: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2448: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2449: }
2450: }
2451: }
2452: # Substitute all of the tables nested in this cell in their appropriate places.
2453:
2454:
2455: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2456: for (my $in=0; $in<=$nested_count; $in++) {
2457: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2458: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2459: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2460: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2461:
2462: }
2463: # Should be be killing off the 'include' elements as they're used up?
2464:
2465: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2466:
2467:
2468:
2469:
2470: # the colspan array will indicate how many columns will be spanned by this
2471: # cell..this requires that counter_columns also be adjusted accordingly
2472: # so that the next bunch of text goes in the right cell. Note that since
2473: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2474: #
2475:
2476: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2477: for (my $i = 0; $i < ($colspan -1); $i++) {
2478: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2479: }
2480: for (my $r = 0; $r < $rowspan; $r++) {
2481: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2482: # Put empty text in spanned cols.
2483:
2484: }
2485:
2486: }
2487:
2488: return '';
2489: }
2490:
2491: sub end_td {
2492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2493: my $currentstring = '';
2494: if ($target eq 'web' || $target eq 'webgrade') {
2495: $currentstring = $token->[2];
2496: } elsif ($target eq 'tex') {
2497: $Apache::londefdef::TD_redirection =0;
2498: &end_td_tex($parstack,$parser,$safeeval);
2499: }
2500: return $currentstring;
2501: }
2502:
2503: #-- <th> tag (end tag optional)
2504: sub start_th {
2505: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2506: my $currentstring = '';
2507: if ($target eq 'web' || $target eq 'webgrade') {
2508: $currentstring = $token->[4];
2509: } elsif ($target eq 'tex') {
2510: $Apache::londefdef::TD_redirection = 1;
2511: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2512: }
2513: return $currentstring;
2514: }
2515:
2516: sub tagg_check {
2517: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2518: my @ar=@$parstack;
2519: for (my $i=$#ar-1;$i>=0;$i--) {
2520: if (lc($$tagstack[$i]) eq $good_tag) {
2521: &start_th_tex($parstack,$parser,$safeeval);
2522: last;
2523: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2524: splice @ar, $i+1;
2525: &end_th_tex(\@ar,$parser,$safeeval);
2526: &start_th_tex($parstack,$parser,$safeeval);
2527: last;
2528: }
2529: }
2530: return '';
2531: }
2532:
2533: sub start_th_tex {
2534: my ($parstack,$parser,$safeeval) = @_;
2535:
2536: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2537: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2538: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2539:
2540: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2541: my $table = $Apache::londefdef::table[-1];
2542: $table->add_cell('\textbf{', $config);
2543:
2544: #-------------------------------------------------------------------------------------
2545: #
2546: # Old table code.
2547: #
2548: #--------------------------------------------------------------------------------------
2549:
2550: if (0) {
2551:
2552:
2553: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2554: if ($alignchar eq '') {
2555: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2556: }
2557: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2558: $Apache::londefdef::table[-1]{'counter_columns'}++;
2559: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2560: if (defined $TeXwidth) {
2561: my $current_length=&recalc($TeXwidth);
2562: $current_length=~/(\d+\.?\d*)/;
2563: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2564: }
2565: }
2566:
2567: # Accept xml until the </th> tag.
2568:
2569: &Apache::lonxml::startredirection();
2570: return '';
2571: }
2572:
2573: sub end_th_tex {
2574: my ($parstack,$parser,$safeeval) = @_;
2575:
2576: my $table = $Apache::londefdef::table[-1];
2577: my $text = &Apache::lonxml::endredirection();
2578: $table->append_cell_text($text.'}');
2579:
2580: #-----------------------------------------------------------------------------
2581: # Old table code:
2582: #-----------------------------------------------------------------------------
2583:
2584: if (0) {
2585: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2586: my $data=&Apache::lonxml::endredirection();
2587: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2588: if (defined $TeXwidth) {
2589: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2590: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2591: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2592: } else {
2593: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2594: my $garbage_data=$data;
2595: my $fwidth=0;
2596: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2597: my $current_length=&recalc($1);
2598: $current_length=~/(\d+\.?\d*)/;
2599: if ($fwidth<$1) {$fwidth=$1;}
2600: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2601: }
2602: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2603: my $current_length=$1;
2604: if ($fwidth<$current_length) {$fwidth=$current_length;}
2605: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2606: }
2607: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2608: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2609: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2610: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2611: } else {
2612: $data=~s/^\s+(\S.*)/$1/;
2613: $data=~s/(.*\S)\s+$/$1/;
2614: $data=~s/(\s)+/$1/;
2615: my ($current_length,$min_length)=(0,0);
2616: if ($data=~/\\vskip/) {
2617: my $newdata=$data;
2618: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2619: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2620: foreach my $elementdata (@newdata) {
2621: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2622: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2623: my @words=split(/ /,$elementdata);
2624: foreach my $word (@words) {
2625: my $lengthword=2.5*&LATEX_length($word);
2626: if ($min_length<$lengthword) {$min_length=$lengthword;}
2627: }
2628: }
2629: } else {
2630: $current_length=2.5*&LATEX_length($data);
2631: my @words=split(/ /,$data);
2632: foreach my $word (@words) {
2633: my $lengthword=2*&LATEX_length($word);
2634: if ($min_length<$lengthword) {$min_length=$lengthword;}
2635: }
2636: }
2637: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2638: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2639: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2640: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2641: }
2642: }
2643: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2644: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2645: }
2646: #make data bold
2647: $data='\textbf{'.$data.'}';
2648: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2649: }
2650: return'';
2651: }
2652:
2653: sub end_th {
2654: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2655: my $currentstring = &end_p(); # Close any open <p> in the row.
2656: if ($target eq 'web' || $target eq 'webgrade') {
2657: $currentstring .= $token->[2];
2658: } elsif ($target eq 'tex') {
2659: $Apache::londefdef::TD_redirection =0;
2660: &end_th_tex($parstack,$parser,$safeeval);
2661: }
2662: return $currentstring;
2663: }
2664:
2665: #-- <img> tag (end tag forbidden)
2666: #
2667: # Render the <IMG> tag.
2668: # <IMG> has the following attributes (in addition to the
2669: # standard HTML ones:
2670: # TeXwrap - Governs how the tex target will try to wrap text around
2671: # horizontally aligned images.
2672: # TeXwidth - The width of the image when rendered for print (mm).
2673: # TeXheight - The height of the image when rendered for print (mm)
2674: # (Note there seems to also be support for this as a % of page size)
2675: #
2676: sub start_img {
2677: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2678: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2679: undef,1);
2680: if (! $src &&
2681: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2682: ) {
2683: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2684: return '';
2685: }
2686: &Apache::lonxml::extlink($src);
2687: my $currentstring = '';
2688: my $scaling = .3;
2689:
2690: # Render unto browsers that which are the browser's...
2691:
2692: if ($target eq 'web' || $target eq 'webgrade') {
2693: my $enc = ('yes' eq
2694: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2695: $safeeval)));
2696: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2697: $enc);
2698:
2699: # and render unto TeX that which is LaTeX
2700: } elsif ($target eq 'tex') {
2701: #
2702: # The alignment will require some superstructure to be put around
2703: # the \includegraphics stuff. At present we can only partially
2704: # simulate the alignments offered by html.
2705: #
2706: #
2707: my $align = lc(&Apache::lonxml::get_param('align',
2708: $parstack,
2709: $safeeval,
2710: undef,1));
2711: if(!$align) {
2712: $align = "bottom"; # This is html's default so it's ours too.
2713: }
2714: #
2715: &Apache::lonxml::debug("Alignemnt = $align");
2716: # LaTeX's image/text wrapping is really bad since it wants to
2717: # make figures float.
2718: # The user has the optional parameter (applicable only to l/r
2719: # alignment to use the picins/parpic directive to get wrapped text
2720: # this is also imperfect.. that's why we give them a choice...
2721: # so they can't yell at us for our choice.
2722: #
2723: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2724: $parstack,
2725: $safeeval,
2726: undef,0);
2727: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2728: if(!$latex_rendering) {
2729: $latex_rendering = "texwrap";
2730: }
2731: # using texwrap inside a table does not work. So, if after all of this,
2732: # texwrap is on, we turn it off if we detect we're in a table:
2733: #
2734: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2735: $latex_rendering = 'parpic';
2736: }
2737:
2738: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2739:
2740: #if original bmp/gif/jpg/png file exist do following:
2741: my $origsrc=$src;
2742: my ($path,$file) = &get_eps_image($src);
2743: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2744: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2745: &Apache::lonxml::debug("path = $path file = $file src = $src");
2746: if (-e $src) {
2747: &Apache::lonxml::debug("$src exists");
2748: my ($height_param,$width_param)=
2749: &image_size($origsrc,0.3,$parstack,$safeeval);
2750: my $size;
2751: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2752: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2753: # Default size if not able to extract that (e.g. eps image).
2754:
2755: # &Apache::lonnet::logthis("Size = $size");
2756:
2757: $size='['.$size;
2758: $size=~s/,$/]/;
2759: $currentstring .= '\graphicspath{{'.$path.'}}'
2760: .'\includegraphics'.$size.'{'.$file.'} ';
2761: my $closure;
2762: ($currentstring, $closure) = &align_latex_image($align,
2763: $latex_rendering,
2764: $currentstring,
2765: $width_param,
2766: $height_param);
2767: $currentstring .= $closure;
2768:
2769: } else {
2770: &Apache::lonxml::debug("$src does not exist");
2771: #original image file doesn't exist so check the alt attribute
2772: my $alt =
2773: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2774: unless ($alt) {
2775: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2776: }
2777:
2778: if ($alt) { $currentstring .= ' '.$alt.' '; }
2779: }
2780:
2781: # And here's where the semi-quote breaks down: allow the user
2782: # to edit the beast as well by rendering the problem for edit:
2783: } elsif ($target eq 'edit') {
2784: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2785: $currentstring .=&Apache::edit::tag_start($target,$token);
2786: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2787: &Apache::edit::browse('src',undef,'alt',$only).' '.
2788: &Apache::edit::search('src',undef,'alt').'<br />';
2789: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2790: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2791: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2792: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2793: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2794: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2795: ['','bottom','middle','top','left','right'],$token,5);
2796: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2797: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2798: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2799: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2800:
2801: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2802: ['no','yes'], $token, 2);
2803: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2804: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2805: }
2806: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2807: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2808: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2809: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2810:
2811: if ($token->[2]{'src'}=~/\$/) {
2812: $currentstring.=&mt('Variable image source');
2813: } elsif ($token->[2]{'src'}=~/\S/) {
2814: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2815: if ($width) { $currentstring.=' width="'.$width.'" '; }
2816: if ($height) { $currentstring.=' height="'.$height.'" '; }
2817: $currentstring .= ' />';
2818: } else {
2819: $currentstring.=&mt("No image source specified");
2820: }
2821: } elsif ($target eq 'modified') {
2822: my ($osrc,$owidth,$oheight)=
2823: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2824: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2825: $safeeval,'src','alt','align',
2826: 'TeXwidth','TeXheight', 'TeXwrap',
2827: 'width','height','encrypturl');
2828: my ($nsrc,$nwidth,$nheight)=
2829: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2830: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2831: &image_replication($loc);
2832: my ($iwidth,$iheight);
2833: if (-e $loc) {
2834: my $image = Image::Magick->new;
2835: $image->Read($loc);
2836: ($iwidth, $iheight) = ($image->Get('width'),
2837: $image->Get('height'));
2838: }
2839: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2840: # changed image or no size specified,
2841: # if they didn't explicitly change the
2842: # width or height use the ones from the image
2843: if ($iwidth && $iheight) {
2844: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2845: $token->[2]{'width'} = $iwidth;$ctag=1;
2846: }
2847: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2848: $token->[2]{'height'}=$iheight;$ctag=1;
2849: }
2850: }
2851: }
2852: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2853: # if we don't have a width or height
2854: if ($iwidth && $cwidth && !$cheight) {
2855: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2856: }
2857: if ($iheight && $cheight && !$cwidth) {
2858: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2859: }
2860: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2861: }
2862:
2863: return $currentstring;
2864: }
2865:
2866: sub end_img {
2867: my ($target,$token) = @_;
2868: my $currentstring = '';
2869: if ($target eq 'web' || $target eq 'webgrade') {
2870: $currentstring = $token->[2];
2871: } elsif ($target eq 'tex') {
2872: $currentstring = '';
2873: }
2874: return $currentstring;
2875: }
2876:
2877: #-- <applet> tag (end tag required)
2878: sub start_applet {
2879: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2880:
2881: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2882: &Apache::lonxml::extlink($code);
2883: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2884: undef,1);
2885: &Apache::lonxml::extlink($archive);
2886: my $currentstring = '';
2887: if ($target eq 'web' || $target eq 'webgrade') {
2888: $currentstring = $token->[4];
2889: } elsif ($target eq 'tex') {
2890: # Turn off some stuff we can't be inside thank you LaTeX
2891:
2892: my $restart_sub = 0;
2893: my $restart_sup = 0;
2894:
2895: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2896: # using the start_ stop_ functions.. those tags only care about
2897: # $target.
2898:
2899: if (&is_inside_of($tagstack, "sub")) {
2900: $restart_sub = 1;
2901: $currentstring .= &end_sub($target, $token, $tagstack,
2902: $parstack, $parser, $safeeval);
2903: }
2904: if (&is_inside_of($tagstack, "sup")) {
2905: $restart_sup = 1;
2906: $currentstring .= &end_sup($target, $token, $tagstack,
2907: $parstack, $parser, $safeeval);
2908: }
2909:
2910: # Now process the applet; just replace it with its alt attribute.
2911:
2912: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2913: $safeeval,undef,1);
2914: unless ($alttag) {
2915: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2916: undef,1);
2917: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2918: $code);
2919: }
2920: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2921: '.}\end{center}';
2922:
2923: # Turn stuff back on that we can't be inside of.
2924:
2925: if ($restart_sub) {
2926: $currentstring .= &start_sub($target, $token, $tagstack,
2927: $parstack, $parser, $safeeval);
2928: }
2929: if ($restart_sup) {
2930: $currentstring .= &start_sup($target, $token, $tagstack,
2931: $parstack, $parser, $safeeval);
2932: }
2933: }
2934: return $currentstring;
2935: }
2936:
2937: sub end_applet {
2938: my ($target,$token) = @_;
2939: my $currentstring = '';
2940: if ($target eq 'web' || $target eq 'webgrade') {
2941: $currentstring = $token->[2];
2942: } elsif ($target eq 'tex') {
2943: }
2944: return $currentstring;
2945: }
2946:
2947: #-- <embed> tag (end tag optional/required)
2948: sub start_embed {
2949: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2950: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2951: &Apache::lonxml::extlink($src);
2952: my $currentstring = '';
2953: if ($target eq 'web' || $target eq 'webgrade') {
2954: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2955: } elsif ($target eq 'tex') {
2956: }
2957: return $currentstring;
2958: }
2959:
2960: sub end_embed {
2961: my ($target,$token) = @_;
2962: my $currentstring = '';
2963: if ($target eq 'web' || $target eq 'webgrade') {
2964: $currentstring = $token->[2];
2965: } elsif ($target eq 'tex') {
2966: # ./.
2967: }
2968: return $currentstring;
2969: }
2970:
2971: #-- <param> tag (end tag forbidden)
2972: sub start_param {
2973: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2974: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
2975: undef,1);
2976: if ($name =~/^cabbase$/i) {
2977: my $value=&Apache::lonxml::get_param('value',$parstack,
2978: $safeeval,undef,1);
2979: &Apache::lonxml::extlink($value);
2980: } elsif ($name eq 'flashvars') {
2981: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
2982: eq 'application/x-shockwave-flash') {
2983: my $launcher =
2984: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
2985: if ($launcher) {
2986: &Apache::lonxml::extlink($launcher);
2987: }
2988: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
2989: $safeeval,undef,1);
2990: if ($flashvars ne '') {
2991: foreach my $item (split(/\&/,$flashvars)) {
2992: my ($key,$value)=split(/=/,$item,2);
2993: if ($key eq 'content') {
2994: if ($value ne '') {
2995: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
2996: &Apache::lonxml::extlink($dir.$value);
2997: }
2998: } elsif ($key eq 'thumb') {
2999: if ($value ne '') {
3000: &Apache::lonxml::extlink($value);
3001: }
3002: }
3003: }
3004: }
3005: }
3006: }
3007: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3008: if ($src ne '') {
3009: &Apache::lonxml::extlink($src);
3010: }
3011: my $currentstring = '';
3012: if ($target eq 'web' || $target eq 'webgrade') {
3013: my %toconvert;
3014: if ($src) { $toconvert{'src'}= $src; }
3015: if ($name=~/^cabbase$/i) {
3016: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3017: $safeeval,undef,1);
3018: }
3019: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3020: } elsif ($target eq 'tex') {
3021: }
3022: return $currentstring;
3023: }
3024:
3025: sub end_param {
3026: my ($target,$token) = @_;
3027: my $currentstring = '';
3028: if ($target eq 'web' || $target eq 'webgrade') {
3029: $currentstring = $token->[2];
3030: } elsif ($target eq 'tex') {
3031: }
3032: return $currentstring;
3033: }
3034:
3035: #-- <allow> tag
3036: sub start_allow {
3037: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3038: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3039: &Apache::lonxml::extlink($src);
3040:
3041: if ($target eq 'tex') { &image_replication($src); }
3042: my $result;
3043: if ($target eq 'edit') {
3044: $result .=&Apache::edit::tag_start($target,$token);
3045: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3046: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3047: } elsif ($target eq 'modified') {
3048: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3049: $safeeval,'src');
3050: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3051: }
3052: return $result;
3053: }
3054:
3055: sub end_allow {
3056: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3057: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3058: return '';
3059: }
3060:
3061: #-- Frames (end tag required)
3062: #-- <frameset>
3063: sub start_frameset {
3064: my ($target,$token) = @_;
3065: my $currentstring = ''; # Close any pending para.
3066: if ($target eq 'web' || $target eq 'webgrade') {
3067: $currentstring =
3068: &Apache::loncommon::start_page($Apache::londefdef::title,
3069: $Apache::londefdef::head,
3070: {'add_entries' => $token->[2],
3071: # 'no_title' => 1,
3072: 'force_register' => 1,
3073: 'frameset' => 1,});
3074:
3075: }
3076: return $currentstring;
3077: }
3078:
3079: sub end_frameset {
3080: my ($target,$token) = @_;
3081: my $currentstring = '';
3082: if ($target eq 'web' || $target eq 'webgrade') {
3083: $currentstring = $token->[2];
3084: }
3085: return $currentstring;
3086: }
3087:
3088: #-- <xmp> (end tag required)
3089: sub start_xmp {
3090: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3091: my $currentstring = '';
3092: if ($target eq 'web' || $target eq 'webgrade') {
3093: $currentstring .= $token->[4];
3094: } elsif ($target eq 'tex') {
3095: $currentstring .= '\begin{verbatim}';
3096: }
3097: return $currentstring;
3098: }
3099:
3100: sub end_xmp {
3101: my ($target,$token) = @_;
3102: my $currentstring = '';
3103: if ($target eq 'web' || $target eq 'webgrade') {
3104: $currentstring .= $token->[2];
3105: } elsif ($target eq 'tex') {
3106: $currentstring .= '\end{verbatim}';
3107: }
3108: return $currentstring;
3109: }
3110:
3111: #-- <pre> (end tag required)
3112: sub start_pre {
3113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3114: my $currentstring = &end_p(); # close off pending <p>
3115: if ($target eq 'web' || $target eq 'webgrade') {
3116: $currentstring .= $token->[4];
3117: } elsif ($target eq 'tex') {
3118: $currentstring .= '\begin{verbatim}';
3119: &Apache::lonxml::disable_LaTeX_substitutions();
3120: }
3121: return $currentstring;
3122: }
3123:
3124: sub end_pre {
3125: my ($target,$token) = @_;
3126: my $currentstring = '';
3127: if ($target eq 'web' || $target eq 'webgrade') {
3128: $currentstring .= $token->[2];
3129: } elsif ($target eq 'tex') {
3130: $currentstring .= '\end{verbatim}';
3131: &Apache::lonxml::enable_LaTeX_substitutions();
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <insert>
3137: sub start_insert {
3138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web' || $target eq 'webgrade') {
3141: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3142: $currentstring .= '<b>'.$display.'</b>';;
3143: }
3144: return $currentstring;
3145: }
3146:
3147: sub end_insert {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web' || $target eq 'webgrade') {
3151: $currentstring .= '';
3152: }
3153: return $currentstring;
3154: }
3155:
3156: #-- <externallink>
3157: sub start_externallink {
3158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3159: my $currentstring = '';
3160: if ($target eq 'web' || $target eq 'webgrade') {
3161: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3162: $currentstring .= '<b>'.$display.'</b>';;
3163: }
3164: return $currentstring;
3165: }
3166:
3167: sub end_externallink {
3168: my ($target,$token) = @_;
3169: my $currentstring = '';
3170: if ($target eq 'web' || $target eq 'webgrade') {
3171: $currentstring .= '';
3172: }
3173: return $currentstring;
3174: }
3175:
3176: #-- <blankspace heigth="">
3177: sub start_blankspace {
3178: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3179: my $currentstring = &end_p(); # closes off any unclosed <p>
3180: if ($target eq 'tex') {
3181: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3182: $currentstring .= '\vskip '.$howmuch.' ';
3183: }
3184: return $currentstring;
3185: }
3186:
3187: sub end_blankspace {
3188: my ($target,$token) = @_;
3189: my $currentstring = '';
3190: if ($target eq 'tex') {
3191: $currentstring .= '';
3192: }
3193: return $currentstring;
3194: }
3195:
3196: #-- <abbr> tag (end tag required)
3197: sub start_abbr {
3198: my ($target,$token) = @_;
3199: my $currentstring = '';
3200: if ($target eq 'web' || $target eq 'webgrade') {
3201: $currentstring = $token->[4];
3202: }
3203: return $currentstring;
3204: }
3205:
3206: sub end_abbr {
3207: my ($target,$token) = @_;
3208: my $currentstring = '';
3209: if ($target eq 'web' || $target eq 'webgrade') {
3210: $currentstring = $token->[2];
3211: }
3212: return $currentstring;
3213: }
3214:
3215: #-- <acronym> tag (end tag required)
3216: sub start_acronym {
3217: my ($target,$token) = @_;
3218: my $currentstring = '';
3219: if ($target eq 'web' || $target eq 'webgrade') {
3220: $currentstring = $token->[4];
3221: }
3222: return $currentstring;
3223: }
3224:
3225: sub end_acronym {
3226: my ($target,$token) = @_;
3227: my $currentstring = '';
3228: if ($target eq 'web' || $target eq 'webgrade') {
3229: $currentstring = $token->[2];
3230: }
3231: return $currentstring;
3232: }
3233:
3234: #-- <area> tag (end tag forbidden)
3235: sub start_area {
3236: my ($target,$token) = @_;
3237: my $currentstring = '';
3238: if ($target eq 'web' || $target eq 'webgrade') {
3239: $currentstring = $token->[4];
3240: }
3241: return $currentstring;
3242: }
3243:
3244: sub end_area {
3245: my ($target,$token) = @_;
3246: my $currentstring = '';
3247: if ($target eq 'web' || $target eq 'webgrade') {
3248: $currentstring = $token->[2];
3249: }
3250: return $currentstring;
3251: }
3252:
3253: #-- <base> tag (end tag forbidden)
3254: sub start_base {
3255: my ($target,$token) = @_;
3256: my $currentstring = '';
3257: if ($target eq 'web' || $target eq 'webgrade') {
3258: $currentstring = $token->[4];
3259: }
3260: return $currentstring;
3261: }
3262:
3263: sub end_base {
3264: my ($target,$token) = @_;
3265: my $currentstring = '';
3266: if ($target eq 'web' || $target eq 'webgrade') {
3267: $currentstring = $token->[2];
3268: }
3269: return $currentstring;
3270: }
3271:
3272: #-- <bdo> tag (end tag required)
3273: sub start_bdo {
3274: my ($target,$token) = @_;
3275: my $currentstring = '';
3276: if ($target eq 'web' || $target eq 'webgrade') {
3277: $currentstring = $token->[4];
3278: }
3279: return $currentstring;
3280: }
3281:
3282: sub end_bdo {
3283: my ($target,$token) = @_;
3284: my $currentstring = '';
3285: if ($target eq 'web' || $target eq 'webgrade') {
3286: $currentstring = $token->[2];
3287: }
3288: return $currentstring;
3289: }
3290:
3291: #-- <bgsound> tag (end tag optional)
3292: sub start_bgsound {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web' || $target eq 'webgrade') {
3296: $currentstring = $token->[4];
3297: }
3298: return $currentstring;
3299: }
3300:
3301: sub end_bgsound {
3302: my ($target,$token) = @_;
3303: my $currentstring = '';
3304: if ($target eq 'web' || $target eq 'webgrade') {
3305: $currentstring = $token->[2];
3306: }
3307: return $currentstring;
3308: }
3309:
3310: #-- <blink> tag (end tag required)
3311: sub start_blink {
3312: my ($target,$token) = @_;
3313: my $currentstring = '';
3314: if ($target eq 'web' || $target eq 'webgrade') {
3315: $currentstring = $token->[4];
3316: }
3317: return $currentstring;
3318: }
3319:
3320: sub end_blink {
3321: my ($target,$token) = @_;
3322: my $currentstring = '';
3323: if ($target eq 'web' || $target eq 'webgrade') {
3324: $currentstring = $token->[2];
3325: }
3326: return $currentstring;
3327: }
3328:
3329: #-- <blockquote> tag (end tag required)
3330: sub start_blockquote {
3331: my ($target,$token) = @_;
3332: my $currentstring = &end_p(); # Close any unclosed <p>
3333: if ($target eq 'web' || $target eq 'webgrade') {
3334: $currentstring .= $token->[4];
3335: }
3336: if ($target eq 'tex') {
3337: $currentstring .= '\begin{quote}';
3338: }
3339: return $currentstring;
3340: }
3341:
3342: sub end_blockquote {
3343: my ($target,$token) = @_;
3344: my $currentstring = '';
3345: if ($target eq 'web' || $target eq 'webgrade') {
3346: $currentstring = $token->[2];
3347: }
3348: if ($target eq 'tex') {
3349: $currentstring = '\end{quote}';
3350: }
3351: return $currentstring;
3352: }
3353:
3354: #-- <button> tag (end tag required)
3355: sub start_button {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web' || $target eq 'webgrade') {
3359: $currentstring = $token->[4];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: sub end_button {
3365: my ($target,$token) = @_;
3366: my $currentstring = '';
3367: if ($target eq 'web' || $target eq 'webgrade') {
3368: $currentstring = $token->[2];
3369: }
3370: return $currentstring;
3371: }
3372:
3373: #-- <caption> tag (end tag required)
3374: sub start_caption {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web' || $target eq 'webgrade') {
3378: $currentstring = $token->[4];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: sub end_caption {
3384: my ($target,$token) = @_;
3385: my $currentstring = '';
3386: if ($target eq 'web' || $target eq 'webgrade') {
3387: $currentstring = $token->[2];
3388: }
3389: return $currentstring;
3390: }
3391:
3392: #-- <col> tag (end tag forbdden)
3393: sub start_col {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web' || $target eq 'webgrade') {
3397: $currentstring = $token->[4];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: sub end_col {
3403: my ($target,$token) = @_;
3404: my $currentstring = '';
3405: if ($target eq 'web' || $target eq 'webgrade') {
3406: $currentstring = $token->[2];
3407: }
3408: return $currentstring;
3409: }
3410:
3411: #-- <colgroup tag (end tag optional)
3412: sub start_colgroup {
3413: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3414: my $currentstring = '';
3415: if ($target eq 'web' || $target eq 'webgrade') {
3416: $currentstring = $token->[4];
3417: }
3418: if ($target eq 'tex') {
3419: # TODO: Ensure this tag is in a table:
3420:
3421: # Fetch the attributes and build the hash for the
3422: # call to define_colgroup.
3423:
3424: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3425: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3426:
3427: my %colgroup_params;
3428: if ($span ne '') {
3429: $colgroup_params{'span'} = $span;
3430: }
3431: if ($halign ne '') {
3432: $colgroup_params{'halign'} = $halign;
3433: }
3434:
3435: my $table = $Apache::londefdef::table[-1];
3436: $table->define_colgroup(\%colgroup_params);
3437:
3438: }
3439: return $currentstring;
3440: }
3441:
3442: sub end_colgroup {
3443: my ($target,$token) = @_;
3444: my $currentstring = '';
3445: if ($target eq 'web' || $target eq 'webgrade') {
3446: $currentstring = $token->[2];
3447: }
3448: return $currentstring;
3449: }
3450:
3451:
3452: #-- <del> tag (end tag required)
3453: sub start_del {
3454: my ($target,$token) = @_;
3455: my $currentstring = '';
3456: if ($target eq 'web' || $target eq 'webgrade') {
3457: $currentstring = $token->[4];
3458: } elsif ($target eq 'tex') {
3459: &disable_para();
3460: $currentstring .= '\st{';
3461: }
3462: return $currentstring;
3463: }
3464:
3465: sub end_del {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web' || $target eq 'webgrade') {
3469: $currentstring = $token->[2];
3470: } elsif ($target eq 'tex') {
3471: &enable_para();
3472: $currentstring = '}';
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <fieldset> tag (end tag required)
3478: sub start_fieldset {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web' || $target eq 'webgrade') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_fieldset {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web' || $target eq 'webgrade') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <frame> tag (end tag forbidden)
3497: sub start_frame {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web' || $target eq 'webgrade') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_frame {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web' || $target eq 'webgrade') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <iframe> tag (end tag required)
3516: sub start_iframe {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web' || $target eq 'webgrade') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_iframe {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web' || $target eq 'webgrade') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <ins> tag (end tag required)
3535: sub start_ins {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web' || $target eq 'webgrade') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_ins {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web' || $target eq 'webgrade') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <isindex> tag (end tag forbidden)
3554: sub start_isindex {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web' || $target eq 'webgrade') {
3558: $currentstring = $token->[4];
3559: }
3560: return $currentstring;
3561: }
3562:
3563: sub end_isindex {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web' || $target eq 'webgrade') {
3567: $currentstring = $token->[2];
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <keygen> tag (end tag forbidden)
3573: sub start_keygen {
3574: my ($target,$token) = @_;
3575: my $currentstring = '';
3576: if ($target eq 'web' || $target eq 'webgrade') {
3577: $currentstring = $token->[4];
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_keygen {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web' || $target eq 'webgrade') {
3586: $currentstring = $token->[2];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <label> tag
3592: sub start_label {
3593: my ($target,$token) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web' || $target eq 'webgrade') {
3596: $currentstring = $token->[4];
3597: }
3598: return $currentstring;
3599: }
3600:
3601: sub end_label {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web' || $target eq 'webgrade') {
3605: $currentstring = $token->[2];
3606: }
3607: return $currentstring;
3608: }
3609:
3610: #-- <layer> tag (end tag required)
3611: sub start_layer {
3612: my ($target,$token) = @_;
3613: my $currentstring = '';
3614: if ($target eq 'web' || $target eq 'webgrade') {
3615: $currentstring = $token->[4];
3616: }
3617: return $currentstring;
3618: }
3619:
3620: sub end_layer {
3621: my ($target,$token) = @_;
3622: my $currentstring = '';
3623: if ($target eq 'web' || $target eq 'webgrade') {
3624: $currentstring = $token->[2];
3625: }
3626: return $currentstring;
3627: }
3628:
3629: #-- <legend> tag (end tag required)
3630: sub start_legend {
3631: my ($target,$token) = @_;
3632: my $currentstring = '';
3633: if ($target eq 'web' || $target eq 'webgrade') {
3634: $currentstring = $token->[4];
3635: }
3636: return $currentstring;
3637: }
3638:
3639: sub end_legend {
3640: my ($target,$token) = @_;
3641: my $currentstring = '';
3642: if ($target eq 'web' || $target eq 'webgrade') {
3643: $currentstring = $token->[2];
3644: }
3645: return $currentstring;
3646: }
3647:
3648: #-- <link> tag (end tag forbidden)
3649: sub start_link {
3650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3651: my $currentstring = '';
3652: if ($target eq 'web' || $target eq 'webgrade') {
3653: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3654: undef,1);
3655: &Apache::lonxml::extlink($href);
3656: $currentstring = $token->[4];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: sub end_link {
3662: my ($target,$token) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web' || $target eq 'webgrade') {
3665: $currentstring = $token->[2];
3666: }
3667: return $currentstring;
3668: }
3669:
3670: #-- <marquee> tag (end tag optional)
3671: sub start_marquee {
3672: my ($target,$token) = @_;
3673: my $currentstring = '';
3674: if ($target eq 'web' || $target eq 'webgrade') {
3675: $currentstring = $token->[4];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: sub end_marquee {
3681: my ($target,$token) = @_;
3682: my $currentstring = '';
3683: if ($target eq 'web' || $target eq 'webgrade') {
3684: $currentstring = $token->[2];
3685: }
3686: return $currentstring;
3687: }
3688:
3689: #-- <multicol> tag (end tag required)
3690: sub start_multicol {
3691: my ($target,$token) = @_;
3692: my $currentstring = &end_p(); # Close any pending <p>
3693: if ($target eq 'web' || $target eq 'webgrade') {
3694: $currentstring .= $token->[4];
3695: }
3696: return $currentstring;
3697: }
3698:
3699: sub end_multicol {
3700: my ($target,$token) = @_;
3701: my $currentstring = '';
3702: if ($target eq 'web' || $target eq 'webgrade') {
3703: $currentstring = $token->[2];
3704: }
3705: return $currentstring;
3706: }
3707:
3708: #-- <nobr> tag (end tag required)
3709: sub start_nobr {
3710: my ($target,$token) = @_;
3711: my $currentstring = '';
3712: if ($target eq 'web' || $target eq 'webgrade') {
3713: $currentstring = $token->[4];
3714: } elsif ($target eq 'tex') {
3715: $currentstring='\mbox{';
3716: }
3717: return $currentstring;
3718: }
3719:
3720: sub end_nobr {
3721: my ($target,$token) = @_;
3722: my $currentstring = '';
3723: if ($target eq 'web' || $target eq 'webgrade') {
3724: $currentstring = $token->[2];
3725: } elsif ($target eq 'tex') {
3726: $currentstring='}';
3727: }
3728: return $currentstring;
3729: }
3730:
3731: #-- <noembed> tag (end tag required)
3732: sub start_noembed {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[4];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: sub end_noembed {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web' || $target eq 'webgrade') {
3745: $currentstring = $token->[2];
3746: }
3747: return $currentstring;
3748: }
3749:
3750: #-- <noframes> tag (end tag required)
3751: sub start_noframes {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[4];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: sub end_noframes {
3761: my ($target,$token) = @_;
3762: my $currentstring = '';
3763: if ($target eq 'web' || $target eq 'webgrade') {
3764: $currentstring = $token->[2];
3765: }
3766: return $currentstring;
3767: }
3768:
3769: #-- <nolayer> tag (end tag required)
3770: sub start_nolayer {
3771: my ($target,$token) = @_;
3772: my $currentstring = '';
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring = $token->[4];
3775: }
3776: return $currentstring;
3777: }
3778:
3779: sub end_nolayer {
3780: my ($target,$token) = @_;
3781: my $currentstring = '';
3782: if ($target eq 'web' || $target eq 'webgrade') {
3783: $currentstring = $token->[2];
3784: }
3785: return $currentstring;
3786: }
3787:
3788: #-- <noscript> tag (end tag required)
3789: sub start_noscript {
3790: my ($target,$token) = @_;
3791: my $currentstring = '';
3792: if ($target eq 'web' || $target eq 'webgrade') {
3793: $currentstring = $token->[4];
3794: }
3795: return $currentstring;
3796: }
3797:
3798: sub end_noscript {
3799: my ($target,$token) = @_;
3800: my $currentstring = '';
3801: if ($target eq 'web' || $target eq 'webgrade') {
3802: $currentstring = $token->[2];
3803: }
3804: return $currentstring;
3805: }
3806:
3807: #-- <object> tag (end tag required)
3808: sub start_object {
3809: my ($target,$token) = @_;
3810: my $currentstring = '';
3811: if ($target eq 'web' || $target eq 'webgrade') {
3812: $currentstring = $token->[4];
3813: }
3814: return $currentstring;
3815: }
3816:
3817: sub end_object {
3818: my ($target,$token) = @_;
3819: my $currentstring = '';
3820: if ($target eq 'web' || $target eq 'webgrade') {
3821: $currentstring = $token->[2];
3822: }
3823: return $currentstring;
3824: }
3825:
3826: #-- <optgroup> tag (end tag required)
3827: sub start_optgroup {
3828: my ($target,$token) = @_;
3829: my $currentstring = '';
3830: if ($target eq 'web' || $target eq 'webgrade') {
3831: $currentstring = $token->[4];
3832: }
3833: return $currentstring;
3834: }
3835:
3836: sub end_optgroup {
3837: my ($target,$token) = @_;
3838: my $currentstring = '';
3839: if ($target eq 'web' || $target eq 'webgrade') {
3840: $currentstring = $token->[2];
3841: }
3842: return $currentstring;
3843: }
3844:
3845: #-- <samp> tag (end tag required)
3846: sub start_samp {
3847: my ($target,$token) = @_;
3848: my $currentstring = '';
3849: if ($target eq 'web' || $target eq 'webgrade') {
3850: $currentstring = $token->[4];
3851: } elsif ($target eq 'tex') {
3852: $currentstring='\texttt{';
3853: }
3854: return $currentstring;
3855: }
3856:
3857: sub end_samp {
3858: my ($target,$token) = @_;
3859: my $currentstring = '';
3860: if ($target eq 'web' || $target eq 'webgrade') {
3861: $currentstring = $token->[2];
3862: } elsif ($target eq 'tex') {
3863: $currentstring='}';
3864: }
3865: return $currentstring;
3866: }
3867:
3868: #-- <server> tag
3869: sub start_server {
3870: my ($target,$token) = @_;
3871: my $currentstring = '';
3872: if ($target eq 'web' || $target eq 'webgrade') {
3873: $currentstring = $token->[4];
3874: }
3875: return $currentstring;
3876: }
3877:
3878: sub end_server {
3879: my ($target,$token) = @_;
3880: my $currentstring = '';
3881: if ($target eq 'web' || $target eq 'webgrade') {
3882: $currentstring = $token->[2];
3883: }
3884: return $currentstring;
3885: }
3886:
3887: #-- <spacer> tag (end tag forbidden)
3888: sub start_spacer {
3889: my ($target,$token) = @_;
3890: my $currentstring = &end_p(); # Close off any open <p> tag.
3891: if ($target eq 'web' || $target eq 'webgrade') {
3892: $currentstring .= $token->[4];
3893: }
3894: return $currentstring;
3895: }
3896:
3897: sub end_spacer {
3898: my ($target,$token) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: $currentstring = $token->[2];
3902: }
3903: return $currentstring;
3904: }
3905:
3906: #-- <span> tag (end tag required)
3907: sub start_span {
3908: my ($target,$token) = @_;
3909: my $currentstring = '';
3910: if ($target eq 'web' || $target eq 'webgrade') {
3911: $currentstring = $token->[4];
3912: }
3913: return $currentstring;
3914: }
3915:
3916: sub end_span {
3917: my ($target,$token) = @_;
3918: my $currentstring = '';
3919: if ($target eq 'web' || $target eq 'webgrade') {
3920: $currentstring = $token->[2];
3921: }
3922: return $currentstring;
3923: }
3924:
3925: #-- <tbody> tag (end tag optional)
3926: sub start_tbody {
3927: my ($target,$token) = @_;
3928: my $currentstring = '';
3929: if ($target eq 'web' || $target eq 'webgrade') {
3930: $currentstring = $token->[4];
3931: }
3932: if ($target eq 'tex') {
3933: # TODO: Ensure this tag is within a table:
3934:
3935: my $table = $Apache::londefdef::table[-1];
3936: $table->start_body();
3937: }
3938: return $currentstring;
3939: }
3940:
3941: sub end_tbody {
3942: my ($target,$token) = @_;
3943: my $currentstring = '';
3944: if ($target eq 'web' || $target eq 'webgrade') {
3945: $currentstring = $token->[2];
3946: }
3947: if($target eq 'tex') {
3948: # TODO: Ensure this tag is within a table:
3949:
3950: my $table = $Apache::londefdef::table[-1];
3951: $table->end_body();
3952: }
3953: return $currentstring;
3954: }
3955:
3956: #-- <tfoot> tag (end tag optional)
3957: sub start_tfoot {
3958: my ($target,$token) = @_;
3959: my $currentstring = '';
3960: if ($target eq 'web' || $target eq 'webgrade') {
3961: $currentstring = $token->[4];
3962: }
3963: if ($target eq 'tex') {
3964: # TODO: ensure this is within a table tag.
3965: my $table = $Apache::londefdef::table[-1];
3966: $table->start_foot();
3967: }
3968: return $currentstring;
3969: }
3970:
3971: sub end_tfoot {
3972: my ($target,$token) = @_;
3973: my $currentstring = '';
3974: if ($target eq 'web' || $target eq 'webgrade') {
3975: $currentstring = $token->[2];
3976: }
3977: if ($target eq 'tex') {
3978: # TODO: Ensure this is in side a table
3979: my $table = $Apache::londefdef::table[-1];
3980: $table->end_foot();
3981: }
3982: return $currentstring;
3983: }
3984:
3985: #-- <thead> tag (end tag optional)
3986: sub start_thead {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[4];
3991: }
3992: if ($target eq 'tex') {
3993: # Assume we're in a table... TODO: Verify that and ignore tag if not.
3994: my $table = $Apache::londefdef::table[-1];
3995: $table->start_head();
3996: }
3997: return $currentstring;
3998: }
3999:
4000: sub end_thead {
4001: my ($target,$token) = @_;
4002: my $currentstring = '';
4003: if ($target eq 'web' || $target eq 'webgrade') {
4004: $currentstring = $token->[2];
4005: }
4006: if ($target eq 'tex') {
4007: # TODO: Verify we are in a table and ignore tag if not.
4008:
4009: my $table = $Apache::londefdef::table[-1];
4010: $table->end_head();
4011: }
4012: return $currentstring;
4013: }
4014:
4015: #-- <var> tag
4016: sub start_var {
4017: my ($target,$token) = @_;
4018: my $currentstring = '';
4019: if ($target eq 'web' || $target eq 'webgrade') {
4020: $currentstring = $token->[4];
4021: } elsif ($target eq 'tex') {
4022: $currentstring = '\textit{';
4023: }
4024: return $currentstring;
4025: }
4026:
4027: sub end_var {
4028: my ($target,$token) = @_;
4029: my $currentstring = '';
4030: if ($target eq 'web' || $target eq 'webgrade') {
4031: $currentstring = $token->[2];
4032: } elsif ($target eq 'tex') {
4033: $currentstring = '}';
4034: }
4035: return $currentstring;
4036: }
4037:
4038: #-- <wbr> tag (end tag forbidden)
4039: sub start_wbr {
4040: my ($target,$token) = @_;
4041: my $currentstring = '';
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: $currentstring = $token->[4];
4044: }
4045: return $currentstring;
4046: }
4047:
4048: sub end_wbr {
4049: my ($target,$token) = @_;
4050: my $currentstring = '';
4051: if ($target eq 'web' || $target eq 'webgrade') {
4052: $currentstring = $token->[2];
4053: }
4054: return $currentstring;
4055: }
4056:
4057: #-- <hideweboutput> tag
4058: sub start_hideweboutput {
4059: my ($target,$token) = @_;
4060: if ($target eq 'web' || $target eq 'webgrade') {
4061: &Apache::lonxml::startredirection();
4062: }
4063: return '';
4064: }
4065:
4066: sub end_hideweboutput {
4067: my ($target,$token) = @_;
4068: my $currentstring = '';
4069: if ($target eq 'web' || $target eq 'webgrade') {
4070: $currentstring = &Apache::lonxml::endredirection();
4071: }
4072: return '';
4073: }
4074:
4075:
4076: sub image_replication {
4077: my $src = shift;
4078: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4079: #replicates eps or ps
4080: my $epssrc = my $pssrc = $src;
4081: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4082: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4083: if (not -e $epssrc && not -e $pssrc) {
4084: my $result=&Apache::lonnet::repcopy($epssrc);
4085: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4086: }
4087: return '';
4088: }
4089:
4090:
4091:
4092: sub resize_image {
4093: my ($height_param, $width_param, $scaling,
4094: $parstack, $safeeval, $depth, $cis) = @_;
4095:
4096: # First apply the scaling...
4097:
4098: $height_param = $height_param * $scaling;
4099: $width_param = $width_param * $scaling;
4100:
4101: #do we have any specified LaTeX size of the picture?
4102: my $toget='TeXwidth';
4103: if ($cis) {
4104: $toget=lc($toget);
4105: }
4106: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4107: $safeeval,$depth,$cis);
4108: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4109: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4110: $safeeval,$depth,$cis);
4111: #do we have any specified web size of the picture?
4112: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4113: $depth,1);
4114: if ($TeXwidth) {
4115: my $old_width_param=$width_param;
4116: if ($TeXwidth=~/(\d+)\s*\%/) {
4117: $width_param = $1*$env{'form.textwidth'}/100;
4118: } else {
4119: $width_param = $TeXwidth;
4120: }
4121: if ($TeXheight) {
4122: $height_param = $TeXheight;
4123: } elsif ($old_width_param) {
4124: $height_param=$TeXwidth/$old_width_param*$height_param;
4125: }
4126: } elsif ($TeXheight) {
4127: $height_param = $TeXheight;
4128: if ($height_param) {
4129: $width_param = $TeXheight/$height_param*$width_param;
4130: }
4131: } elsif ($width) {
4132: my $old_width_param=$width_param;
4133: $width_param = $width*$scaling;
4134: if ($old_width_param) {
4135: $height_param=$width_param/$old_width_param*$height_param;
4136: }
4137: }
4138: if ($width_param > $env{'form.textwidth'}) {
4139: my $old_width_param=$width_param;
4140: $width_param =0.95*$env{'form.textwidth'};
4141: if ($old_width_param) {
4142: $height_param=$width_param/$old_width_param*$height_param;
4143: }
4144: }
4145:
4146: return ($height_param, $width_param);
4147: }
4148:
4149: sub image_size {
4150: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4151:
4152: #size of image from gif/jpg/jpeg/png
4153: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4154: if (-e $ressrc) {
4155: $src = $ressrc;
4156: }
4157: my $image = Image::Magick->new;
4158: my $current_figure = $image->Read($src);
4159: my $width_param = $image->Get('width');
4160: my $height_param = $image->Get('height');
4161: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4162: undef($image);
4163:
4164: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4165: $scaling, $parstack, $safeeval,
4166: $depth, $cis);
4167:
4168: return ($height_param, $width_param);
4169: }
4170:
4171: sub image_width {
4172: my ($height, $width) = &image_size(@_);
4173: return $width;
4174: }
4175: # Not yet 100% sure this is correct in all circumstances..
4176: # due to my uncertainty about mods to image_size.
4177: #
4178: sub image_height {
4179: my ($height, $width) = &image_size(@_);
4180: return $height;
4181: }
4182:
4183: sub get_eps_image {
4184: my ($src)=@_;
4185: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4186:
4187: # In order to prevent the substitution of the alt text, we need to
4188: # be sure the orig_src file is on system now so:
4189:
4190: if (! -e $orig_src) {
4191: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4192: }
4193: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4194: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4195: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4196: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4197: &Apache::lonxml::debug("Filelocation gives: $src");
4198: if (! -e $src) {
4199: &Apache::lonxml::debug("$src does not exist");
4200: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4201: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4202: #if replication failed try to find ps file
4203: $src=~s/\.eps$/\.ps/;
4204: &Apache::lonxml::debug("Now looking for $src");
4205: #if no ps file try to replicate it.
4206: my $didrepcopy = &Apache::lonnet::repcopy($src);
4207: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4208: if ( (not -e $src) ||
4209: ($didrepcopy ne 'ok')) {
4210: &Apache::lonxml::debug("Failed to find or replicate $src");
4211:
4212: #if replication failed try to produce eps file dynamically
4213: $src=~s/\.ps$/\.eps/;
4214: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4215: my $newsrc=$orig_src;
4216: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4217: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4218: print FILE ("$newsrc\n");
4219: close(FILE);
4220: }
4221: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4222: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4223: if ($sext ne "") { # Put the ext. back in to uniquify.
4224: $src =~ s/\.eps$/$sext.eps/;
4225: }
4226:
4227: }
4228:
4229: }
4230: } else {
4231: # If the postscript file has spaces in its name,
4232: # LaTeX will gratuitiously vomit. Therefore
4233: # queue such files for copy with " " replaced by "_".
4234: # printout.pm will know them by their .ps or .eps extensions.
4235: my $newsrc = $orig_src;
4236: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4237: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4238: print FILE "$src\n";
4239: close FILE;
4240: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4241: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4242: }
4243: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4244: $path =~ s/ /\_/g;
4245: $file =~ s/ /\_/g;
4246: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4247: return ($path.'/',$file);
4248: }
4249:
4250: sub eps_generation {
4251: my ($src,$file,$width_param) = @_;
4252: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4253: if (open(my $tmpfile,">>$filename")) {
4254: print $tmpfile "$src\n";
4255: close($tmpfile);
4256: }
4257: my $newsrc = $src;
4258: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4259: $newsrc=~s{/home/httpd/html/res}{};
4260: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4261: $newsrc=~s{/\./}{/};
4262: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4263: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4264: $newsrc=~s{/home/httpd/lonUsers}{};
4265: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4266: }
4267: if ($newsrc=~m{/userfiles/}) {
4268: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4269: } else {
4270: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4271: }
4272: }
4273:
4274: sub file_path {
4275: my $src=shift;
4276: my ($file,$path);
4277: if ($src =~ m!(.*)/([^/]*)$!) {
4278: $file = $2;
4279: $path = $1.'/';
4280: }
4281: return $file,$path;
4282: }
4283:
4284:
4285: sub recalc {
4286: my $argument = shift;
4287: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4288: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4289: my $value=$1;
4290: my $units=$2;
4291: if ($units eq 'cm') {
4292: $value*=10;
4293: } elsif ($units eq 'in') {
4294: $value*=25.4;
4295: } elsif ($units eq 'pc') {
4296: $value*=(25.4*12/72.27);
4297: } elsif ($units eq 'pt') {
4298: $value*=(25.4/72.27);
4299: }
4300: return $value.' mm';
4301: }
4302:
4303: sub LATEX_length {
4304: my $garbage=shift;
4305: $garbage=~s/^\s+$//;
4306: $garbage=~s/^\s+(\S.*)/$1/;#space before
4307: $garbage=~s/(.*\S)\s+$/$1/;#space after
4308: $garbage=~s/(\s)+/$1/;#only one space
4309: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4310: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4311: $garbage=~s/([^\\])\$/$1/g;#$
4312: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4313: $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;
4314: $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;
4315: $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;
4316: $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;
4317: $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;
4318: $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;
4319: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4320: #remove some other LaTeX command
4321: $garbage=~s|\\(\w+)\\|\\|g;
4322: $garbage=~s|\\(\w+)(\s*)|$2|g;
4323: $garbage=~s|\+|11|g;
4324: my $value=length($garbage);
4325: return $value;
4326: }
4327:
4328:
4329: sub align_latex_image {
4330: my ($align, $latex_rendering, $image, $width, $height) = @_;
4331: my $currentstring; # The 1/2 wrapped image.
4332: my $closure; # The closure of the wrappage.
4333:
4334: # if it's none just return it back
4335: if ($latex_rendering eq 'none') {
4336: return ($image,'');
4337: }
4338:
4339: # If there's an alignment specification we need to honor it here.
4340: # For the horizontal alignments, we will also honor the
4341: # value of the latex specfication. The default is parbox,
4342: # and that's used for illegal values too.
4343: #
4344: # Even though we set a default alignment value, the user
4345: # could have given us an illegal value. In that case we
4346: # just use the default alignment of bottom..
4347: $currentstring = '';
4348: if ($align eq "top") {
4349: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4350: $closure = '}';
4351: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4352: my $offset = $height/2;
4353: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4354: $closure = '}';
4355: } elsif ($align eq "left") {
4356: if ($latex_rendering eq "parpic") {
4357: $currentstring .= '\parpic[l]{'.$image;
4358: $closure = '}';
4359: } elsif ($latex_rendering eq "parbox") {
4360: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4361: .$image;
4362: $closure = '\end{minipage}';
4363: } elsif ($latex_rendering eq "wrapfigure"
4364: || $latex_rendering ne 'none') { # wrapfig render
4365: $currentstring .=
4366: '\begin{wrapfigure}{l}{'.$width.'mm}'
4367: .'\scalebox{1.0}{'.$image;
4368: $closure = '}\end{wrapfigure}';
4369: }
4370: } elsif ($align eq "right") {
4371: if ($latex_rendering eq "parpic") {
4372: $currentstring .= '\parpic[r]{'.$image;
4373: $closure = '}';
4374: } elsif ($latex_rendering eq "parbox") {
4375: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4376: .$image;
4377: $closure = '\end{minipage}';
4378: } elsif ($latex_rendering eq "wrapfigure"
4379: || $latex_rendering ne 'none') { # wrapfig render
4380: $currentstring .=
4381: '\begin{wrapfigure}{r}{'.$width.'mm}'
4382: .'\scalebox{1.0}{'.$image;
4383: $closure = '}\end{wrapfigure}';
4384: }
4385: } else { # Bottom is also default.
4386: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4387: $currentstring .= "{$image";
4388: $closure = '}';
4389: }
4390: return ($currentstring, $closure);
4391: }
4392:
4393:
4394: sub is_inside_of {
4395: my ($tagstack, $tag) = @_;
4396: my @stack = @$tagstack;
4397: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4398: if ($stack[$i] eq $tag) {
4399: return 1;
4400: }
4401: }
4402: return 0;
4403: }
4404:
4405:
4406: #
4407: # This sub provides the typical LaTeX prefix matter for tex output:
4408: #
4409: sub latex_header {
4410: my ($mode) = @_;
4411: my $currentstring = '';
4412:
4413: $currentstring .=
4414: "\n% &Apache::lonxml::londefdef \n" .
4415: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4416: if (($env{'form.latex_type'}=~'batchmode') ||
4417: (!$env{'request.role.adv'}) ||
4418: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4419: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4420: '\renewcommand{\deg}{$^{\circ}$}'.
4421: '\usepackage{multirow}'.
4422: '\usepackage{longtable}'.
4423: '\usepackage{textcomp}'.
4424: '\usepackage{makeidx}'.
4425: '\usepackage[dvips]{graphicx}'.
4426: '\usepackage{wrapfig}'.
4427: '\usepackage{picins}'.
4428: '\usepackage[T1]{fontenc}'."\n".
4429: '\usepackage{lmodern}'."\n".
4430: '\usepackage[postscript]{ucs}'."\n".
4431: '\usepackage[utf8x]{inputenc}'."\n".
4432: '\usepackage{pifont}' ."\n".
4433: '\usepackage{latexsym}'."\n".
4434: '\usepackage{epsfig}'.
4435: "\\usepackage{xtab}\n".
4436: "\\usepackage{tabularx}\n".
4437: "\\usepackage{booktabs}\n".
4438: "\\usepackage{array}\n".
4439: "\\usepackage{colortbl}\n".
4440: "\\usepackage{xcolor}\n".
4441: '\usepackage{calc}'.
4442: '\usepackage{amsmath}'.
4443: '\usepackage{soul}',
4444: '\usepackage{amssymb}'.
4445: '\usepackage{amsfonts}'.
4446: '\usepackage{amsthm}'.
4447: '\usepackage{amscd}'
4448: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4449: '\usepackage[T1]{fontenc}'."\n".
4450: '\usepackage{lmodern}'."\n".
4451: '\usepackage[postscript]{ucs}'."\n".
4452: '\usepackage[utf8x]{inputenc}'."\n".
4453: '\usepackage{pifont}' . "\n";
4454:
4455: if($env{'form.pdfFormFields'} eq 'yes') {
4456: $currentstring .= '\usepackage{hyperref}'.
4457: '\usepackage{eforms}'.
4458: '\usepackage{tabularx}';
4459: }
4460:
4461: $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}}'.
4462: '\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}}';
4463: $currentstring .= '\begin{document}';
4464:
4465: return $currentstring;
4466:
4467: }
4468:
4469: =pod
4470:
4471: =head1 NAME
4472:
4473: Apache::londefdef.pm
4474:
4475: =head1 SYNOPSIS
4476:
4477: Tags Default Definition Module
4478:
4479: This is part of the LearningOnline Network with CAPA project
4480: described at http://www.lon-capa.org.
4481:
4482:
4483: =head1 NOTABLE SUBROUTINES
4484:
4485: =over
4486:
4487: =item start_hideweboutput()
4488:
4489: =item end_hideweboutput()
4490:
4491: =item image_replication()
4492:
4493: =item resize_image()
4494:
4495: Get correct sizing parameter for an image given
4496: it's initial ht. and wid. This allows sizing of
4497: images that are generated on-the-fly (e.g. gnuplot)
4498: as well as serving as a utility for image_size.
4499:
4500: Parameter:
4501: height_param
4502: width_param - Initial picture dimensions.
4503: scaling - A scale factor.
4504: parstack, - the current stack of tag attributes
4505: from the xml parser
4506: safeeval, - pointer to the safespace
4507: depth, - from what level in the stack to look for attributes
4508: (assumes -1 if unspecified)
4509: cis - look for attrubutes case insensitively
4510: (assumes false)
4511:
4512: Returns:
4513: height, width - new dimensions.
4514:
4515: =item image_size()
4516:
4517: =item image_width()
4518:
4519: =item image_height()
4520:
4521: =item get_eps_image()
4522:
4523: =item eps_generation()
4524:
4525: =item file_path()
4526:
4527: =item recalc()
4528:
4529: Converts a measurement in to mm from any of
4530: the other valid LaTeX units of measure.
4531: If the units of measure are missing from the
4532: parameter, it is assumed to be in and returned
4533: with mm units of measure
4534:
4535: =item LATEX_length()
4536:
4537: =item align_latex_image()
4538:
4539: Wrap image 'stuff' inside of the LaTeX required to implement
4540: alignment:
4541: align_tex_image(align, latex_rendering, image)
4542: Where:
4543: align - The HTML alignment specification.
4544: latex_rendering - rendering hint for latex.
4545: image - The LaTeX needed to insert the image itsef.
4546: width,height - dimensions of the image.
4547: Returns:
4548: The 1/2 wrapped image and the stuff required to close the
4549: wrappage. This allows e.g. randomlabel to insert more stuff
4550: into the closure.
4551:
4552:
4553: =item is_inside_of($tagstack, $tag)
4554: This sub returns true if the current state of Xml processing is inside of the tag.
4555: Parameters:
4556: tagstack - The tagstack from the parser.
4557: tag - The tag (without the <>'s.).
4558: Sample usage:
4559: if (is_inside_of($tagstack "table")) {
4560: I'm in a table....
4561: }
4562:
4563:
4564:
4565: =back
4566:
4567: =cut
4568:
4569:
4570: 1;
4571: __END__
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