1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.415.4.6 2011/11/15 17:34:19 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 Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::loncommon();
52: use Apache::Constants qw(:common);
53: use File::Basename;
54: use LONCAPA();
55: # use Data::Dumper;
56:
57: BEGIN {
58:
59: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
60:
61: }
62:
63:
64: sub initialize_londefdef {
65: $Apache::londefdef::TD_redirection=0;
66: @Apache::londefdef::table = ();
67: $Apache::londefdef::select=0;
68: undef(@Apache::londefdef::description);
69: @Apache::londefdef::DD=(0);
70: @Apache::londefdef::DT=(0);
71: @Apache::londefdef::seenDT=(0);
72: $Apache::londefdef::list_index=0;
73: undef($Apache::londefdef::head);
74: undef($Apache::londefdef::title);
75: }
76:
77: #======================= TAG SUBROUTINES =====================
78: #-- <output>
79: sub start_output {
80: my ($target) = @_;
81: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
82: return '';
83: }
84: sub end_output {
85: my ($target) = @_;
86: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
87: return '';
88: }
89: #-- <m> tag
90: sub start_m {
91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
92: my $currentstring = '';
93: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
94: if ($target eq 'web' || $target eq 'analyze') {
95: &Apache::lonxml::debug("M is starting with:$inside:");
96: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
97: if ($eval eq 'on') {
98: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
99: #&Apache::lonxml::debug("M is evaluated to:$inside:");
100: }
101: my $tex = $inside;
102: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
103: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
104: if ($Apache::lontexconvert::errorstring) {
105: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
106: $tex = &HTML::Entities::encode($tex,'<>&"');
107: my ($linenumber) =
108: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
109: if (defined($linenumber)) {
110: my @tex=split("\n",$tex);
111: $tex[$linenumber]='<b><font color="red">'.
112: $tex[$linenumber].'</font></b>';
113: $tex=join("\n",@tex);
114: }
115: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
116: $Apache::lontexconvert::errorstring='';
117: }
118: #&Apache::lonxml::debug("M is ends with:$currentstring:");
119: $Apache::lonxml::post_evaluate=0;
120: } elsif ($target eq 'tex') {
121:
122: $currentstring = $inside;
123: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
124: if ($eval eq 'on') {
125: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
126: }
127: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
128: # detect simple math mode entry exits, and convert them
129: # to use \ensuremath ... unless there's a \verb inside.
130: if (! ($currentstring=~/\\verb/)) {
131: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
132: $currentstring=~s/^(\s*)\$/$1/;
133: $currentstring=~s/\$(\s*)$/$1/;
134: $currentstring='\ensuremath{'.$currentstring.'}';
135: }
136: }
137: $Apache::lonxml::post_evaluate=0;
138: }
139: return $currentstring;
140: }
141:
142: sub end_m {
143: my ($target,$token) = @_;
144: my $currentstring = '';
145: if ($target eq 'tex') {
146: $currentstring = "";
147: }
148: return $currentstring;
149: }
150:
151: sub start_tthoption {
152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
153: my $result;
154: if ($target eq 'web' || $target eq 'webgrade') {
155: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
156: $style);
157: $inside=~s/^\s*//;
158: if ($env{'browser.mathml'}) {
159: &tth::ttmoptions($inside);
160: } else {
161: &tth::tthoptions($inside);
162: }
163: }
164: return $result;
165: }
166:
167: sub end_tthoption {
168: my ($target,$token) = @_;
169: my $result;
170: return $result;
171: }
172:
173: #-- <html> tag (end tag optional)
174: sub start_html {
175: my ($target,$token) = @_;
176: my $currentstring = '';
177: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
178: # start_body() takes care of emitting the <html>
179: } elsif ($target eq 'tex') {
180:
181: $currentstring .= &latex_header();
182: }
183: return $currentstring;
184: }
185:
186: sub end_html {
187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
188: my $currentstring = '';
189: if ($target eq 'web' || $target eq 'webgrade') {
190: # end_body takes care of the </html>
191: }
192: return $currentstring;
193: }
194:
195: #-- <head> tag (end tag optional)
196: sub start_head {
197: my ($target,$token) = @_;
198: my $currentstring = '';
199: if ($target eq 'web' || $target eq 'webgrade') {
200: &Apache::lonxml::startredirection();
201: }
202: return $currentstring;
203: }
204:
205: sub end_head {
206: my ($target,$token) = @_;
207: my $currentstring = '';
208: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
209: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
210: # in case there is a </head> but no <head>
211: if ($Apache::lonxml::redirection) {
212: $Apache::londefdef::head = &Apache::lonxml::endredirection();
213: }
214: }
215: return $currentstring;
216: }
217:
218: #-- <map> tag (end tag required)
219: sub start_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web' || $target eq 'webgrade') {
223: $currentstring = $token->[4];
224: }
225: return $currentstring;
226: }
227:
228: sub end_map {
229: my ($target,$token) = @_;
230: my $currentstring = '';
231: if ($target eq 'web' || $target eq 'webgrade') {
232: $currentstring = $token->[2];
233: }
234: return $currentstring;
235: }
236:
237: #-- <select> tag (end tag required)
238: sub start_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web' || $target eq 'webgrade') {
242: $currentstring = $token->[4];
243: } elsif ($target eq 'tex') {
244: $Apache::londefdef::select=0;
245: }
246: return $currentstring;
247: }
248:
249: sub end_select {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[2];
254: }
255: return $currentstring;
256: }
257:
258: #-- <option> tag (end tag optional)
259: sub start_option {
260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
261: my $currentstring = '';
262: if ($target eq 'web' || $target eq 'webgrade') {
263: $currentstring = $token->[4];
264: } elsif ($target eq 'tex') {
265: $Apache::londefdef::select++;
266: if ($Apache::londefdef::select == 1) {
267: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
268: } else {
269: $currentstring='\keephidden{';
270: }
271: }
272: return $currentstring;
273: }
274:
275: sub end_option {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: } elsif ($target eq 'tex') {
281: $currentstring='}';
282: }
283: return $currentstring;
284: }
285:
286: #-- <input> tag (end tag forbidden)
287: sub start_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web' || $target eq 'webgrade') {
291: $currentstring = $token->[4];
292: }
293: return $currentstring;
294: }
295:
296: sub end_input {
297: my ($target,$token) = @_;
298: my $currentstring = '';
299: if ($target eq 'web' || $target eq 'webgrade') {
300: $currentstring = $token->[2];
301: }
302: return $currentstring;
303: }
304:
305: #-- <textarea> tag (end tag required)
306: sub start_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web' || $target eq 'webgrade') {
310: $currentstring = $token->[4];
311: }
312: return $currentstring;
313: }
314:
315: sub end_textarea {
316: my ($target,$token) = @_;
317: my $currentstring = '';
318: if ($target eq 'web' || $target eq 'webgrade') {
319: $currentstring = $token->[2];
320: }
321: return $currentstring;
322: }
323:
324: #-- <form> tag (end tag required)
325: sub start_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_form {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <title> tag (end tag required)
344: sub start_title {
345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $Apache::londefdef::title =
349: &Apache::lonxml::get_all_text('/title',$parser,$style);
350: } elsif ($target eq 'tex') {
351: $currentstring .= '\keephidden{Title of the document: '
352: }
353: if ($target eq 'meta') {
354: $currentstring='<title>';
355: &start_output($target);
356: }
357: return $currentstring;
358: }
359:
360: sub end_title {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: # start_title takes care of swallowing the title
365: } elsif ($target eq 'tex') {
366: $currentstring .= '}';
367: }
368: if ($target eq 'meta') {
369: &end_output($target);
370: $currentstring='</title>';
371: }
372: return $currentstring;
373: }
374:
375: #-- <meta> tag (end tag forbidden)
376: sub start_meta {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
378: my $currentstring = '';
379: if ($target eq 'web' || $target eq 'webgrade') {
380: my $args='';
381: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
382: if ($args eq '') {
383: &Apache::lonxml::get_all_text("/meta",$parser,$style);
384: } else {
385: $currentstring = $token->[4];
386: }
387: } elsif ($target eq 'meta') {
388: unless (&Apache::lonxml::get_param
389: ('http-equiv',$parstack,$safeeval,undef,1)) {
390: my $name=$token->[2]->{'name'};
391: $name=~tr/A-Z/a-z/;
392: $name=~s/\s/\_/gs;
393: $name=~s/\W//gs;
394: if ($name) {
395: $currentstring='<'.$name;
396: my $display=&Apache::lonxml::get_param
397: ('display',$parstack,$safeeval,undef,1);
398: if ($display) {
399: $display=~s/\"/\'/g;
400: $currentstring.=' display="'.$display.'"';
401: }
402: $currentstring.='>'.
403: &Apache::lonxml::get_param
404: ('content',$parstack,$safeeval,undef,1).
405: '</'.$name.'>';
406: }
407: my $display=&Apache::lonxml::get_param
408: ('display',$parstack,$safeeval,undef,1);
409: if ($display) {
410: $display=&HTML::Entities::encode($display,'<>&"');
411: $currentstring.='<'.$name.'.display>'.$display.
412: '</'.$name.'.display>';
413: }
414: }
415: } elsif ($target eq 'tex') {
416: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
417: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
418: if ((not defined $content) && (not defined $name)) {
419: &Apache::lonxml::startredirection();
420: }
421: } elsif ($target eq 'edit') {
422: $currentstring .= &Apache::edit::tag_start($target,$token);
423: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
424: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
425: $currentstring .= &Apache::edit::end_row();
426: } elsif ($target eq 'modified') {
427: my $constructtag =
428: &Apache::edit::get_new_args($token,$parstack,$safeeval,
429: 'name','content');
430: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
431: }
432: return $currentstring;
433: }
434:
435: sub end_meta {
436: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
437: my $currentstring = '';
438: if ($target eq 'web' || $target eq 'webgrade') {
439: my $args='';
440: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
441: if ($args ne '') {
442: $currentstring = $token->[4];
443: }
444: } elsif ($target eq 'tex') {
445: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
446: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
447: if ((not defined $content) && (not defined $name)) {
448: &Apache::lonxml::endredirection();
449: }
450: }
451: return $currentstring;
452: }
453:
454: sub insert_meta {
455: return '
456: <meta />';
457: }
458:
459: # accessrule
460: sub start_accessrule {
461: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
462: my $currentstring = '';
463: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
464: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
465: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
466: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
467:
468: my ($dom,$crs,$sec,$separator);
469: if ($type eq 'user') {
470: ($dom,$crs,$sec)=split(m{/},$realm);
471: $crs = &LONCAPA::clean_username($crs);
472: $separator = '/';
473: } else {
474: ($dom,$crs,$sec)=split(/\_/,$realm);
475: $crs = &LONCAPA::clean_courseid($crs);
476: $separator = '_';
477: }
478: $dom = &LONCAPA::clean_domain($dom);
479:
480: $sec =~s/\W//;
481: $realm = $dom;
482: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
483: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
484: $role=~s/\W//g;
485:
486: if ($target eq 'web') {
487: my $args='';
488: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
489: if ($args eq '') {
490: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
491: } else {
492: $currentstring = $token->[4];
493: }
494: }
495: if ($target eq 'meta') {
496: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
497: }
498: return $currentstring;
499: }
500:
501: sub end_accessrule {
502: my ($target,$token,$tagstack,$parstack,$parser) = @_;
503: my $currentstring = '';
504: if ($target eq 'web') {
505: my $args='';
506: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
507: if ($args ne '') {
508: $currentstring = $token->[4];
509: }
510: }
511: return $currentstring;
512: }
513:
514: sub generate_css_links {
515: my $links;
516: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
517: if ($css_href =~ /\S/) {
518: &Apache::lonxml::extlink($css_href);
519: $links .=
520: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
521: }
522: return $links;
523: }
524:
525: #-- <body> tag (end tag required)
526: sub start_body {
527: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
528: my $currentstring = '';
529:
530: if ($target eq 'web' || $target eq 'webgrade') {
531: if ($Apache::lonhomework::parsing_a_problem) {
532: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
533: return '';
534: }
535:
536: if (&is_inside_of($tagstack, "head")) {
537: &end_head(@_);
538: }
539:
540: my $extra_head = &generate_css_links();
541:
542: # Breadcrumbs
543: &Apache::lonhtmlcommon::clear_breadcrumbs();
544: if ($env{'request.state'} eq 'construct') {
545: &Apache::lonhtmlcommon::add_breadcrumb({
546: 'text' => 'Construction Space',
547: 'href' => &Apache::loncommon::authorspace(),
548: });
549: &Apache::lonhtmlcommon::add_breadcrumb({
550: 'text' => 'HTML Editor',
551: 'href' => '',
552: });
553: # breadcrumbs (and tools) will be created
554: # in start_page->bodytag->innerregister
555: } else {
556: # FIXME Where are we?
557: }
558:
559: $currentstring =
560: &Apache::loncommon::start_page($Apache::londefdef::title,
561: $Apache::londefdef::head
562: .$extra_head,
563: {'add_entries' => $token->[2],
564: # 'no_title' => 1,
565: 'force_register' => 1});
566:
567: my $header = '';
568: if ($env{'request.state'} ne 'published' &&
569: $env{'request.state'} ne 'construct') {
570: $header=&Apache::lonmenu::constspaceform();
571: }
572: if ($env{'request.state'} ne 'published') {
573: $header.=&Apache::londefdef::edit_controls();
574: }
575: if ($env{'request.state'} eq 'construct') {
576: $currentstring.=&Apache::loncommon::head_subbox(
577: &Apache::loncommon::CSTR_pageheader()
578: .$header);
579: } elsif ($env{'request.state'} eq 'edit') {
580: $currentstring.=&Apache::loncommon::head_subbox($header);
581: }
582: $currentstring.=&Apache::lonxml::message_location();
583: } elsif ($target eq 'tex') {
584: $currentstring = ''; # '\begin{document}' is in header.
585: }
586:
587: return $currentstring;
588: }
589:
590: sub edit_controls {
591: my ($nochgview) = @_;
592: my $result .= '
593: <form method="post" action="">
594: <div class="LC_edit_problem_header">';
595: unless ($nochgview) {
596: $result .= '
597: <div class="LC_edit_problem_header_row1">'.
598: &Apache::lonxml::renderingoptions().'
599: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
600: </div>';
601: }
602: $result .= '
603: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
604: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
605: my $viewtext = &mt('Course View');
606: if (&Apache::loncommon::course_type() eq 'Community') {
607: $viewtext = &mt('Community View');
608: }
609: $result .= (' ' x 3).'<input type="button" value="'.
610: $viewtext.'" onclick="javascript:location.href=currentURL" />';
611: }
612: $result .= '</div>
613: </div>
614: </form>
615: ';
616: return $result;
617: }
618:
619: sub end_body {
620: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
621: my $currentstring = &end_p(); # Close off unclosed <p>
622: if ($target eq 'web' || $target eq 'webgrade') {
623: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
624: } elsif ($target eq 'tex') {
625: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
626: }
627: return $currentstring;
628: }
629:
630: # \begin{center} causes a new paragprah spacing that looks odd inside
631: # of a table cell. Same at the end of a \center but with a slightly
632: # larger space .. hence center_correction and center_end_correction.
633: #
634: sub center_correction { return '\vspace*{-6 mm}'; }
635: sub center_end_correction { return '\vspace*{-7 mm}'; }
636:
637: #-- <center> tag (end tag required)
638: sub start_center {
639: my ($target,$token,$tagstack) = @_;
640: my $currentstring = &end_p(); # Close off any prior para.
641: if ($target eq 'web' || $target eq 'webgrade') {
642: $currentstring .= $token->[4];
643: } elsif ($target eq 'tex') {
644: if (&is_inside_of($tagstack, "table")) {
645: $currentstring .= ¢er_correction();
646: }
647: $currentstring .= '\begin{center}';
648: }
649: return $currentstring;
650: }
651:
652: sub end_center {
653: my ($target,$token,$tagstack) = @_;
654: my $currentstring = '';
655: if ($target eq 'web' || $target eq 'webgrade') {
656: $currentstring = $token->[2];
657: } elsif ($target eq 'tex') {
658: $currentstring = '\end{center}';
659: if (&is_inside_of($tagstack, "table")) {
660: $currentstring .= ¢er_end_correction();
661: }
662: }
663: return $currentstring;
664: }
665:
666: #-- <b> tag (end tag required)
667: # NOTE: In TeX mode disables internal <p>
668: sub start_b {
669: my ($target,$token) = @_;
670: my $currentstring = '';
671: if ($target eq 'web' || $target eq 'webgrade') {
672: $currentstring = $token->[4];
673: } elsif ($target eq 'tex') {
674: &disable_para();
675: $currentstring .= '\textbf{';
676: }
677: return $currentstring;
678: }
679:
680: sub end_b {
681: my ($target,$token) = @_;
682: my $currentstring = '';
683: if ($target eq 'web' || $target eq 'webgrade') {
684: $currentstring = $token->[2];
685: } elsif ($target eq 'tex') {
686: &enable_para();
687: $currentstring = '}';
688: }
689: return $currentstring;
690: }
691:
692: #-- <strong> tag (end tag required)
693: # NOTE: in TeX mode disables internal <p>
694: sub start_strong {
695: my ($target,$token) = @_;
696: my $currentstring = '';
697: if ($target eq 'web' || $target eq 'webgrade') {
698: $currentstring = $token->[4];
699: } elsif ($target eq 'tex') {
700: &disable_para();
701: $currentstring = '\textbf{';
702: }
703: return $currentstring;
704: }
705:
706: sub end_strong {
707: my ($target,$token) = @_;
708: my $currentstring = '';
709: if ($target eq 'web' || $target eq 'webgrade') {
710: $currentstring = $token->[2];
711: } elsif ($target eq 'tex') {
712: &enable_para();
713: $currentstring = '}';
714: }
715: return $currentstring;
716: }
717:
718: #-- <h1> tag (end tag required)
719: sub start_h1 {
720: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
721: my $currentstring = &end_p(); # Close off any prior para.
722: if ($target eq 'web' || $target eq 'webgrade') {
723: $currentstring .= $token->[4];
724: } elsif ($target eq 'tex') {
725: my $pre;
726: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
727: if ($align eq 'center') {
728: $pre='\begin{center}';
729: } elsif ($align eq 'left') {
730: $pre='\rlap{';
731: } elsif ($align eq 'right') {
732: $pre=' \hfill \llap{';
733: }
734: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
735: if (not defined $TeXsize) {$TeXsize="large";}
736: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
737: } elsif ($target eq 'meta') {
738: $currentstring.='<subject>';
739: &start_output($target);
740: }
741: return $currentstring;
742: }
743:
744: sub end_h1 {
745: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
746: my $currentstring = '';
747: if ($target eq 'web' || $target eq 'webgrade') {
748: $currentstring .= $token->[2];
749: } elsif ($target eq 'tex') {
750: my $post='\vskip 0 mm ';
751: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
752: if ($align eq 'center') {
753: $post='\end{center}';
754: } elsif ($align eq 'left') {
755: $post='} \hfill'.'\vskip 0 mm ';
756: } elsif ($align eq 'right') {
757: $post='}'.'\vskip 0 mm ';
758: }
759: $currentstring .= '}}'.$post;
760: } elsif ($target eq 'meta') {
761: &end_output($target);
762: $currentstring='</subject>';
763: }
764: return $currentstring;
765: }
766:
767: #-- <h2> tag
768: sub start_h2 {
769: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
770: my $currentstring = &end_p(); # Close off any prior para.
771: if ($target eq 'web' || $target eq 'webgrade') {
772: $currentstring .= $token->[4];
773: } elsif ($target eq 'tex') {
774: my $pre;
775: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
776: if ($align eq 'center') {
777: $pre='\begin{center}';
778: } elsif ($align eq 'left') {
779: $pre='\rlap{';
780: } elsif ($align eq 'right') {
781: $pre=' \hfill \llap{';
782: }
783: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
784: if (not defined $TeXsize) {$TeXsize="large";}
785: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
786: }
787: return $currentstring;
788: }
789:
790: sub end_h2 {
791: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
792: my $currentstring = '';
793: if ($target eq 'web' || $target eq 'webgrade') {
794: $currentstring .= $token->[2];
795: } elsif ($target eq 'tex') {
796: my $post='\vskip 0 mm ';
797: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
798: if ($align eq 'center') {
799: $post='\end{center}';
800: } elsif ($align eq 'left') {
801: $post='} \hfill'.'\vskip 0 mm ';
802: } elsif ($align eq 'right') {
803: $post='}'.'\vskip 0 mm ';
804: }
805: $currentstring .= '}}'.$post;
806: }
807: return $currentstring;
808: }
809:
810: #-- <h3> tag
811: sub start_h3 {
812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
813: my $currentstring = &end_p(); # Close off any prior para.
814: if ($target eq 'web' || $target eq 'webgrade') {
815: $currentstring .= $token->[4];
816: } elsif ($target eq 'tex') {
817: my $pre;
818: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
819: if ($align eq 'center') {
820: $pre='\begin{center}';
821: } elsif ($align eq 'left') {
822: $pre='\rlap{';
823: } elsif ($align eq 'right') {
824: $pre=' \hfill \llap{';
825: }
826: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
827: if (not defined $TeXsize) {$TeXsize="large";}
828: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
829: }
830: return $currentstring;
831: }
832:
833: sub end_h3 {
834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
835: my $currentstring = '';
836: if ($target eq 'web' || $target eq 'webgrade') {
837: $currentstring .= $token->[2];
838: } elsif ($target eq 'tex') {
839: my $post='\vskip 0 mm ';
840: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
841: if ($align eq 'center') {
842: $post='\end{center}';
843: } elsif ($align eq 'left') {
844: $post='} \hfill'.'\vskip 0 mm ';
845: } elsif ($align eq 'right') {
846: $post='}'.'\vskip 0 mm ';
847: }
848: $currentstring .= '}}'.$post;
849: }
850: return $currentstring;
851: }
852:
853: #-- <h4> tag
854: sub start_h4 {
855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
856: my $currentstring = &end_p(); # Close off any prior para.
857: if ($target eq 'web' || $target eq 'webgrade') {
858: $currentstring .= $token->[4];
859: } elsif ($target eq 'tex') {
860: my $pre;
861: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
862: if ($align eq 'center') {
863: $pre='\begin{center}';
864: } elsif ($align eq 'left') {
865: $pre='\rlap{';
866: } elsif ($align eq 'right') {
867: $pre=' \hfill \llap{';
868: }
869: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
870: if (not defined $TeXsize) {$TeXsize="large";}
871: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
872: }
873: return $currentstring;
874: }
875:
876: sub end_h4 {
877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
878: my $currentstring = '';
879: if ($target eq 'web' || $target eq 'webgrade') {
880: $currentstring .= $token->[2];
881: } elsif ($target eq 'tex') {
882: my $post='\vskip 0 mm ';
883: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
884: if ($align eq 'center') {
885: $post='\end{center}';
886: } elsif ($align eq 'left') {
887: $post='} \hfill'.'\vskip 0 mm ';
888: } elsif ($align eq 'right') {
889: $post='}'.'\vskip 0 mm ';
890: }
891: $currentstring .= '}}'.$post;
892: }
893: return $currentstring;
894: }
895:
896: #-- <h5> tag
897: sub start_h5 {
898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
899: my $currentstring = &end_p(); # Close off any prior paras.
900: if ($target eq 'web' || $target eq 'webgrade') {
901: $currentstring .= $token->[4];
902: } elsif ($target eq 'tex') {
903: my $pre;
904: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
905: if ($align eq 'center') {
906: $pre='\begin{center}';
907: } elsif ($align eq 'left') {
908: $pre='\rlap{';
909: } elsif ($align eq 'right') {
910: $pre=' \hfill \llap{';
911: }
912: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
913: if (not defined $TeXsize) {$TeXsize="large";}
914: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
915: }
916: return $currentstring;
917: }
918:
919: sub end_h5 {
920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
921: my $currentstring = '';
922: if ($target eq 'web' || $target eq 'webgrade') {
923: $currentstring .= $token->[2];
924: } elsif ($target eq 'tex') {
925: my $post='\vskip 0 mm ';
926: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
927: if ($align eq 'center') {
928: $post='\end{center}';
929: } elsif ($align eq 'left') {
930: $post='} \hfill'.'\vskip 0 mm ';
931: } elsif ($align eq 'right') {
932: $post='}'.'\vskip 0 mm ';
933: }
934: $currentstring .= '}}'.$post;
935: }
936: return $currentstring;
937: }
938:
939: #-- <h6> tag
940: sub start_h6 {
941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
942: my $currentstring = &end_p(); # Close off any prior paras.
943: if ($target eq 'web' || $target eq 'webgrade') {
944: $currentstring .= $token->[4];
945: } elsif ($target eq 'tex') {
946: my $pre;
947: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
948: if ($align eq 'center') {
949: $pre='\begin{center}';
950: } elsif ($align eq 'left') {
951: $pre='\rlap{';
952: } elsif ($align eq 'right') {
953: $pre=' \hfill \llap{';
954: }
955: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
956: if (not defined $TeXsize) {$TeXsize="large";}
957: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
958: }
959: return $currentstring;
960: }
961:
962: sub end_h6 {
963: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
964: my $currentstring = '';
965: if ($target eq 'web' || $target eq 'webgrade') {
966: $currentstring .= $token->[2];
967: } elsif ($target eq 'tex') {
968: my $post='\vskip 0 mm ';
969: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
970: if ($align eq 'center') {
971: $post='\end{center}';
972: } elsif ($align eq 'left') {
973: $post='} \hfill'.'\vskip 0 mm ';
974: } elsif ($align eq 'right') {
975: $post='}'.'\vskip 0 mm ';
976: }
977: $currentstring .= '}}'.$post;
978: }
979: return $currentstring;
980: }
981:
982: #--- <cite> tag (end tag required)
983: sub start_cite {
984: my ($target,$token) = @_;
985: my $currentstring = '';
986: if ($target eq 'web' || $target eq 'webgrade') {
987: $currentstring .= $token->[4];
988: } elsif ($target eq 'tex') {
989: $currentstring .= '\textit{';
990: }
991: return $currentstring;
992: }
993:
994: sub end_cite {
995: my ($target,$token) = @_;
996: my $currentstring = '';
997: if ($target eq 'web' || $target eq 'webgrade') {
998: $currentstring .= $token->[2];
999: } elsif ($target eq 'tex') {
1000: $currentstring .= '}';
1001: }
1002: return $currentstring;
1003: }
1004:
1005: #-- <i> tag (end tag required)
1006: sub start_i {
1007: my ($target,$token) = @_;
1008: my $currentstring = '';
1009: if ($target eq 'web' || $target eq 'webgrade') {
1010: $currentstring .= $token->[4];
1011: } elsif ($target eq 'tex') {
1012: $currentstring .= '\textit{';
1013: }
1014: return $currentstring;
1015: }
1016:
1017: sub end_i {
1018: my ($target,$token) = @_;
1019: my $currentstring = '';
1020: if ($target eq 'web' || $target eq 'webgrade') {
1021: $currentstring .= $token->[2];
1022: } elsif ($target eq 'tex') {
1023: $currentstring .= '}';
1024: }
1025: return $currentstring;
1026: }
1027:
1028: #-- <address> tag (end tag required)
1029: sub start_address {
1030: my ($target,$token) = @_;
1031: my $currentstring = '';
1032: if ($target eq 'web' || $target eq 'webgrade') {
1033: $currentstring .= $token->[4];
1034: } elsif ($target eq 'tex') {
1035: $currentstring .= '\textit{';
1036: }
1037: return $currentstring;
1038: }
1039:
1040: sub end_address {
1041: my ($target,$token) = @_;
1042: my $currentstring = '';
1043: if ($target eq 'web' || $target eq 'webgrade') {
1044: $currentstring .= $token->[2];
1045: } elsif ($target eq 'tex') {
1046: $currentstring .= '}';
1047: }
1048: return $currentstring;
1049: }
1050:
1051: #-- <dfn> tag (end tag required)
1052: sub start_dfn {
1053: my ($target,$token) = @_;
1054: my $currentstring = '';
1055: if ($target eq 'web' || $target eq 'webgrade') {
1056: $currentstring .= $token->[4];
1057: } elsif ($target eq 'tex') {
1058: $currentstring .= '\textit{';
1059: }
1060: return $currentstring;
1061: }
1062:
1063: sub end_dfn {
1064: my ($target,$token) = @_;
1065: my $currentstring = '';
1066: if ($target eq 'web' || $target eq 'webgrade') {
1067: $currentstring .= $token->[2];
1068: } elsif ($target eq 'tex') {
1069: $currentstring .= '}';
1070: }
1071: return $currentstring;
1072: }
1073:
1074: #-- <tt> tag (end tag required)
1075: sub start_tt {
1076: my ($target,$token) = @_;
1077: my $currentstring = '';
1078: if ($target eq 'web' || $target eq 'webgrade') {
1079: $currentstring .= $token->[4];
1080: } elsif ($target eq 'tex') {
1081: $currentstring .= '\texttt{';
1082: }
1083: return $currentstring;
1084: }
1085:
1086: sub end_tt {
1087: my ($target,$token) = @_;
1088: my $currentstring = '';
1089: if ($target eq 'web' || $target eq 'webgrade') {
1090: $currentstring .= $token->[2];
1091: } elsif ($target eq 'tex') {
1092: $currentstring .= '}';
1093: }
1094: return $currentstring;
1095: }
1096:
1097: #-- <kbd> tag (end tag required)
1098: sub start_kbd {
1099: my ($target,$token) = @_;
1100: my $currentstring = '';
1101: if ($target eq 'web' || $target eq 'webgrade') {
1102: $currentstring .= $token->[4];
1103: } elsif ($target eq 'tex') {
1104: $currentstring .= '\texttt{';
1105: }
1106: return $currentstring;
1107: }
1108:
1109: sub end_kbd {
1110: my ($target,$token) = @_;
1111: my $currentstring = '';
1112: if ($target eq 'web' || $target eq 'webgrade') {
1113: $currentstring .= $token->[2];
1114: } elsif ($target eq 'tex') {
1115: $currentstring .= '}';
1116: }
1117: return $currentstring;
1118: }
1119:
1120: #-- <code> tag (end tag required)
1121: sub start_code {
1122: my ($target,$token) = @_;
1123: my $currentstring = '';
1124: if ($target eq 'web' || $target eq 'webgrade') {
1125: $currentstring .= $token->[4];
1126: } elsif ($target eq 'tex') {
1127: $currentstring .= '\texttt{';
1128: }
1129: return $currentstring;
1130: }
1131:
1132: sub end_code {
1133: my ($target,$token) = @_;
1134: my $currentstring = '';
1135: if ($target eq 'web' || $target eq 'webgrade') {
1136: $currentstring .= $token->[2];
1137: } elsif ($target eq 'tex') {
1138: $currentstring .= '}';
1139: }
1140: return $currentstring;
1141: }
1142:
1143: #-- <em> tag (end tag required)
1144: sub start_em {
1145: my ($target,$token) = @_;
1146: my $currentstring = '';
1147: if ($target eq 'web' || $target eq 'webgrade') {
1148: $currentstring .= $token->[4];
1149: } elsif ($target eq 'tex') {
1150: $currentstring .= '\emph{';
1151: }
1152: return $currentstring;
1153: }
1154:
1155: sub end_em {
1156: my ($target,$token) = @_;
1157: my $currentstring = '';
1158: if ($target eq 'web' || $target eq 'webgrade') {
1159: $currentstring .= $token->[2];
1160: } elsif ($target eq 'tex') {
1161: $currentstring .= '}';
1162: }
1163: return $currentstring;
1164: }
1165:
1166: #-- <q> tag (end tag required)
1167: sub start_q {
1168: my ($target,$token) = @_;
1169: my $currentstring = '';
1170: if ($target eq 'web' || $target eq 'webgrade') {
1171: $currentstring .= $token->[4];
1172: } elsif ($target eq 'tex') {
1173: $currentstring .= '\emph{';
1174: }
1175: return $currentstring;
1176: }
1177:
1178: sub end_q {
1179: my ($target,$token) = @_;
1180: my $currentstring = '';
1181: if ($target eq 'web' || $target eq 'webgrade') {
1182: $currentstring .= $token->[2];
1183: } elsif ($target eq 'tex') {
1184: $currentstring .= '}';
1185: }
1186: return $currentstring;
1187: }
1188:
1189: # <p> is a bit strange since it does not require a closing </p>
1190: # However in latex, we must often output closing stuff to end
1191: # environments and {}'s etc. Therefore we do all the work
1192: # of figuring out the ending strings in the start tag processing,
1193: # and provide a mechanism to output the stop text external
1194: # to tag processing.
1195: #
1196: {
1197:
1198: my $closing_string = ''; # String required to close <p>
1199:
1200: # Some tags are <p> fragile meaning that <p> inside of them
1201: # does not work within TeX mode. This is managed via the
1202: # counter below:
1203: #
1204:
1205: my $para_disabled = 0;
1206:
1207: sub disable_para {
1208: $para_disabled++;
1209: }
1210: sub enable_para {
1211: $para_disabled--;
1212: }
1213:
1214:
1215: #-- <p> tag (end tag optional)
1216: #optional attribute - align="center|left|right"
1217: sub start_p {
1218: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1219: my $currentstring = '';
1220: if ($target eq 'web' || $target eq 'webgrade') {
1221: $currentstring .= &end_p(); # close off prior para if in progress.
1222: $currentstring .= $token->[4];
1223: if (! ($currentstring =~ /\//)) {
1224: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1225: }
1226: } elsif ($target eq 'tex' && !$para_disabled) {
1227:
1228: $currentstring .= &end_p(); # close off prior para if in progress.
1229: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1230: if ($align eq 'center') {
1231: $currentstring .='\begin{center}\par ';
1232: $closing_string = '\end{center}';
1233: if (&is_inside_of($tagstack, "table")) {
1234: $currentstring = ¢er_correction().$currentstring;
1235: }
1236: } elsif ($align eq 'right') {
1237: $currentstring.="\n".'{\flushright ';
1238: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1239: $closing_string= "}\n";
1240: } elsif ($align eq 'left') {
1241: $currentstring.= "\n".'{\flushleft ';
1242: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1243: $closing_string = "}\n";
1244: } else {
1245: $currentstring.='\par ';
1246: if (&is_inside_of($tagstack, 'table')) {
1247: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1248: } else {
1249: $closing_string = '\strut\\\\\strut ';
1250: }
1251: }
1252:
1253: }
1254: return $currentstring;
1255: }
1256: #
1257: # End paragraph processing just requires that we output the
1258: # closing string that was saved and blank it.
1259: sub end_p {
1260: # Note only 'tex' mode uses disable_para and enable_para
1261: # so we don't need to know the target in the check below:
1262:
1263: if (!$para_disabled) {
1264: my $current_string = $closing_string;
1265: $closing_string = ''; # Not in a para anymore.
1266: return $current_string;
1267: } else {
1268: return '';
1269: }
1270:
1271: }
1272: }
1273: #-- <br> tag (end tag forbidden)
1274: sub start_br {
1275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1276: my $currentstring = '';
1277: if ($target eq 'web' || $target eq 'webgrade') {
1278: $currentstring .= $token->[4];
1279: } elsif ($target eq 'tex') {
1280: my @tempo=@$tagstack;
1281: my $signal=0;
1282: # Not going to factor this to is_inside_of since that would require
1283: # multiple stack traversals.
1284: #
1285: for (my $i=$#tempo;$i>=0;$i--) {
1286: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1287: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1288: $signal=1;
1289: }
1290: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1291: $signal = 1;
1292: }
1293: }
1294: if ($signal != 1) {
1295: $currentstring .= '\strut \\\\ \strut ';
1296: }
1297:
1298: }
1299: return $currentstring;
1300: }
1301:
1302: sub end_br {
1303: my ($target,$token) = @_;
1304: my $currentstring = '';
1305: if ($target eq 'web' || $target eq 'webgrade') {
1306: $currentstring .= $token->[2];
1307: }
1308: return $currentstring;
1309: }
1310:
1311: #-- <big> tag (end tag required)
1312: sub start_big {
1313: my ($target,$token) = @_;
1314: my $currentstring = '';
1315: if ($target eq 'web' || $target eq 'webgrade') {
1316: $currentstring .= $token->[4];
1317: } elsif ($target eq 'tex') {
1318: $currentstring .= '{\large ';
1319: }
1320: return $currentstring;
1321: }
1322:
1323: sub end_big {
1324: my ($target,$token) = @_;
1325: my $currentstring = '';
1326: if ($target eq 'web' || $target eq 'webgrade') {
1327: $currentstring .= $token->[2];
1328: } elsif ($target eq 'tex') {
1329: $currentstring .= '}';
1330: }
1331: return $currentstring;
1332: }
1333:
1334: #-- <small> tag (end tag required)
1335: sub start_small {
1336: my ($target,$token) = @_;
1337: my $currentstring = '';
1338: if ($target eq 'web' || $target eq 'webgrade') {
1339: $currentstring .= $token->[4];
1340: } elsif ($target eq 'tex') {
1341: $currentstring .= '{\footnotesize ';
1342: }
1343: return $currentstring;
1344: }
1345:
1346: sub end_small {
1347: my ($target,$token) = @_;
1348: my $currentstring = '';
1349: if ($target eq 'web' || $target eq 'webgrade') {
1350: $currentstring .= $token->[2];
1351: } elsif ($target eq 'tex') {
1352: $currentstring .= '}';
1353: }
1354: return $currentstring;
1355: }
1356:
1357: #-- <basefont> tag (end tag forbidden)
1358: sub start_basefont {
1359: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1360: my $currentstring = '';
1361: if ($target eq 'web' || $target eq 'webgrade') {
1362: $currentstring = $token->[4];
1363: } elsif ($target eq 'tex') {
1364: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1365: if (defined $basesize) {
1366: $currentstring = '{\\'.$basesize.' ';
1367: }
1368: }
1369: return $currentstring;
1370: }
1371:
1372: sub end_basefont {
1373: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1374: my $currentstring = '';
1375: if ($target eq 'web' || $target eq 'webgrade') {
1376: $currentstring = $token->[4];
1377: } elsif ($target eq 'tex') {
1378: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1379: if (defined $basesize) {
1380: $currentstring = '}';
1381: }
1382: }
1383: return $currentstring;
1384: }
1385:
1386: #-- <font> tag (end tag required)
1387: sub start_font {
1388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1389: my $currentstring = '';
1390: if ($target eq 'web' || $target eq 'webgrade') {
1391: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1392: $currentstring = $token->[4];
1393: } elsif ($target eq 'tex') {
1394: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1395: if (defined $fontsize) {
1396: $currentstring = '{\\'.$fontsize.' ';
1397: }
1398: }
1399: return $currentstring;
1400: }
1401:
1402: sub end_font {
1403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1404: my $currentstring = '';
1405: if ($target eq 'web' || $target eq 'webgrade') {
1406: $currentstring = $token->[2];
1407: } elsif ($target eq 'tex') {
1408: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1409: if (defined $fontsize) {
1410: $currentstring = '}';
1411: }
1412: }
1413: return $currentstring;
1414: }
1415:
1416: #-- <strike> tag (end tag required)
1417: sub start_strike {
1418: my ($target,$token) = @_;
1419: my $currentstring = '';
1420: if ($target eq 'web' || $target eq 'webgrade') {
1421: $currentstring .= $token->[4];
1422: } elsif ($target eq 'tex') {
1423: &Apache::lonxml::startredirection();
1424: }
1425: return $currentstring;
1426: }
1427:
1428: sub end_strike {
1429: my ($target,$token) = @_;
1430: my $currentstring = '';
1431: if ($target eq 'web' || $target eq 'webgrade') {
1432: $currentstring .= $token->[2];
1433: } elsif ($target eq 'tex') {
1434: $currentstring=&Apache::lonxml::endredirection();
1435: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1436: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1437: $currentstring=~s/(\S)\s*$/$1\}/;
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <s> tag (end tag required)
1443: sub start_s {
1444: my ($target,$token) = @_;
1445: my $currentstring = '';
1446: if ($target eq 'web' || $target eq 'webgrade') {
1447: $currentstring .= $token->[4];
1448: } elsif ($target eq 'tex') {
1449: &Apache::lonxml::startredirection();
1450: }
1451: return $currentstring;
1452: }
1453:
1454: sub end_s {
1455: my ($target,$token) = @_;
1456: my $currentstring = '';
1457: if ($target eq 'web' || $target eq 'webgrade') {
1458: $currentstring .= $token->[2];
1459: } elsif ($target eq 'tex') {
1460: $currentstring=&Apache::lonxml::endredirection();
1461: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1462: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1463: $currentstring=~s/(\S)\s*$/$1\}/;
1464: }
1465: return $currentstring;
1466: }
1467:
1468: #-- <sub> tag (end tag required)
1469: sub start_sub {
1470: my ($target,$token) = @_;
1471: my $currentstring = '';
1472: if ($target eq 'web' || $target eq 'webgrade') {
1473: $currentstring .= $token->[4];
1474: } elsif ($target eq 'tex') {
1475: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1476: }
1477: return $currentstring;
1478: }
1479:
1480: sub end_sub {
1481: my ($target,$token) = @_;
1482: my $currentstring = '';
1483: if ($target eq 'web' || $target eq 'webgrade') {
1484: $currentstring .= $token->[2];
1485: } elsif ($target eq 'tex') {
1486: $currentstring .= '}}';
1487: }
1488: return $currentstring;
1489: }
1490:
1491: #-- <sup> tag (end tag required)
1492: sub start_sup {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web' || $target eq 'webgrade') {
1496: $currentstring .= $token->[4];
1497: } elsif ($target eq 'tex') {
1498: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1499: }
1500: return $currentstring;
1501: }
1502:
1503: sub end_sup {
1504: my ($target,$token) = @_;
1505: my $currentstring = '';
1506: if ($target eq 'web' || $target eq 'webgrade') {
1507: $currentstring .= $token->[2];
1508: } elsif ($target eq 'tex') {
1509: $currentstring .= '}}';
1510: }
1511: return $currentstring;
1512: }
1513:
1514: #-- <hr> tag (end tag forbidden)
1515: sub start_hr {
1516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1517: my $currentstring = &end_p(); # End enclosing para.
1518: if ($target eq 'web' || $target eq 'webgrade') {
1519: $currentstring .= $token->[4];
1520: } elsif ($target eq 'tex') {
1521:
1522: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1523: #
1524: my $restart_sub = 0;
1525: my $restart_sup = 0;
1526:
1527: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1528: # using the start_ stop_ functions.. those tags only care about
1529: # $target.
1530:
1531: if (&is_inside_of($tagstack, "sub")) {
1532: $restart_sub = 1;
1533: $currentstring .= &end_sub($target, $token, $tagstack,
1534: $parstack, $parser, $safeeval);
1535: }
1536: if (&is_inside_of($tagstack, "sup")) {
1537: $restart_sup = 1;
1538: $currentstring .= &end_sup($target, $token, $tagstack,
1539: $parstack, $parser, $safeeval);
1540: }
1541:
1542: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1543: if (defined $LaTeXwidth) {
1544: if ($LaTeXwidth=~/^%/) {
1545: substr($LaTeXwidth,0,1)='';
1546: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1547: }
1548: } else {
1549: $LaTeXwidth ='0.9\textwidth';
1550: }
1551: my ($pre,$post);
1552: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1553: if (($align eq 'center') || (not defined $align)) {
1554: $pre=''; $post='';
1555: } elsif ($align eq 'left') {
1556: $pre='\rlap{'; $post='} \hfill';
1557: } elsif ($align eq 'right') {
1558: $pre=' \hfill \llap{'; $post='}';
1559: }
1560: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1561: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1562: # Turn stuff back on that we can't be inside of.
1563:
1564: if ($restart_sub) {
1565: $currentstring .= &start_sub($target, $token, $tagstack,
1566: $parstack, $parser, $safeeval);
1567: }
1568: if ($restart_sup) {
1569: $currentstring .= &start_sup($target, $token, $tagstack,
1570: $parstack, $parser, $safeeval);
1571: }
1572: }
1573: return $currentstring;
1574: }
1575:
1576: sub end_hr {
1577: my ($target,$token) = @_;
1578: my $currentstring = '';
1579: if ($target eq 'web' || $target eq 'webgrade') {
1580: $currentstring .= $token->[2];
1581: }
1582: return $currentstring;
1583: }
1584:
1585: #-- <div> tag (end tag required)
1586: {
1587:
1588: # Since div can be nested, the stack below is used
1589: # in 'tex' mode to store the ending strings
1590: # for the div stack.
1591:
1592: my @div_end_stack;
1593:
1594: sub start_div {
1595: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1596: my $currentstring = &end_p(); # Close enclosing para.
1597: if ($target eq 'web' || $target eq 'webgrade') {
1598: $currentstring .= $token->[4];
1599: }
1600: if ($target eq 'tex') {
1601: # 4 possible alignments: left, right, center, and -missing-.
1602: # If inside a table row, we must let the table logic
1603: # do the alignment, however.
1604: #
1605:
1606: my $endstring = '';
1607:
1608: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1609: $safeeval, undef, 1));
1610: if ($align eq 'center') {
1611: $currentstring .= '\begin{center}';
1612: $endstring = '\end{center}';
1613: if (&is_inside_of($tagstack, "table")) {
1614: $currentstring = ¢er_correction().$currentstring;
1615: $endstring .= ¢er_end_correction();
1616: }
1617: }
1618: elsif ($align eq 'right') {
1619: $currentstring .= '\begin{flushright}';
1620: $endstring .= '\end{flushright}';
1621: } elsif ($align eq 'left') {
1622: $currentstring .= '\begin{flushleft}';
1623: $endstring = '\end{flushleft}';
1624: } else {
1625:
1626: }
1627: $currentstring .= "\n"; # For human readability.
1628: $endstring = "\n$endstring\n"; # For human readability
1629: push(@div_end_stack, $endstring);
1630: }
1631: return $currentstring;
1632: }
1633:
1634: sub end_div {
1635: my ($target,$token) = @_;
1636: my $currentstring = '';
1637: if ($target eq 'web' || $target eq 'webgrade') {
1638: $currentstring .= $token->[2];
1639: }
1640: if ($target eq 'tex') {
1641: my $endstring = pop @div_end_stack;
1642: $currentstring .= $endstring;
1643: }
1644: return $currentstring;
1645: }
1646: }
1647:
1648: #-- <a> tag (end tag required)
1649: sub start_a {
1650: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1651: my $currentstring = '';
1652: if ($target eq 'web' || $target eq 'webgrade') {
1653: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1654: undef,1);
1655: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1656: if ($href =~ /\S/) {
1657: if ($href !~ m{^https?://}) {
1658: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1659: my $linkurl;
1660: if ($href =~ m{^/uploaded/}) {
1661: $linkurl = $href;
1662: } elsif ($href =~ m{^[^/]}) {
1663: my $path = $url;
1664: $path =~ s{[^/]*$}{};
1665: $linkurl = $path.$href;
1666: }
1667: if ($linkurl =~ m{^/uploaded/}) {
1668: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1669: if (&Apache::lonnet::is_on_map($url)) {
1670: &Apache::lonxml::extlink($linkurl);
1671: }
1672: }
1673: }
1674: }
1675: }
1676: }
1677: return $currentstring;
1678: }
1679:
1680: sub end_a {
1681: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web' || $target eq 'webgrade') {
1684: $currentstring .= $token->[2];
1685: }
1686: if ($target eq 'tex') {
1687: my $href =
1688: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1689: my $name =
1690: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1691: my $uriprint =
1692: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1693: my $anchorprint =
1694: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1695: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1696: $href =~ s/([^\\])%/$1\\\%/g;
1697: # Substitute special symbols... and allow line breaks at each /
1698: #
1699: $href = &Apache::lonxml::latex_special_symbols($href);
1700: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1701: $currentstring .= ' ({\tt URI:'.$href.'})';
1702: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1703: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1704: } else {
1705: $currentstring.='';
1706: }
1707: }
1708: return $currentstring;
1709: }
1710:
1711: #-- <li> tag (end tag optional)
1712: sub start_li {
1713: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1714: my $currentstring = '';
1715: if ($target eq 'web' || $target eq 'webgrade') {
1716: $currentstring = $token->[4];
1717: } elsif ($target eq 'tex') {
1718: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1719: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1720: #FIXME need to support types i and I
1721: if ($type=~/disc/) {
1722: $currentstring .= ' \item[$\bullet$] ';
1723: } elsif ($type=~/circle/) {
1724: $currentstring .= ' \item[$\circ$] ';
1725: } elsif ($type=~/square/) {
1726: $currentstring .= ' \item[$\diamond$] ';
1727: } elsif ($type eq '1') {
1728: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1729: } elsif ($type eq 'A') {
1730: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1731: } elsif ($type eq 'a') {
1732: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1733: } elsif ($value ne '') {
1734: $currentstring .= ' \item['.$value.'] ';
1735: } else {
1736: $currentstring .= ' \item ';
1737: }
1738: $Apache::londefdef::list_index++;
1739: }
1740: return $currentstring;
1741: }
1742:
1743: sub end_li {
1744: my ($target,$token) = @_;
1745: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1746: if ($target eq 'web' || $target eq 'webgrade') {
1747: $currentstring .= $token->[2];
1748: }
1749: return $currentstring;
1750: }
1751:
1752: #-- <u> tag (end tag required)
1753: sub start_u {
1754: my ($target,$token) = @_;
1755: my $currentstring = '';
1756: if ($target eq 'web' || $target eq 'webgrade') {
1757: $currentstring .= $token->[4];
1758: } elsif ($target eq 'tex') {
1759: &Apache::lonxml::startredirection();
1760: }
1761: return $currentstring;
1762: }
1763:
1764: sub end_u {
1765: my ($target,$token) = @_;
1766: my $currentstring = '';
1767: if ($target eq 'web' || $target eq 'webgrade') {
1768: $currentstring .= $token->[2];
1769: } elsif ($target eq 'tex') {
1770: $currentstring=&Apache::lonxml::endredirection();
1771: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1772: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1773: $currentstring=~s/(\S)\s*$/$1\}/;
1774: }
1775: return $currentstring;
1776: }
1777:
1778: #-- <ul> tag (end tag required)
1779: sub start_ul {
1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1781: my $currentstring = &end_p(); # Close off enclosing list.
1782: if ($target eq 'web' || $target eq 'webgrade') {
1783: $currentstring .= $token->[4];
1784: } elsif ($target eq 'tex') {
1785: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1786: $Apache::londefdef::list_index=0;
1787: if ($TeXtype eq 'disc') {
1788: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1789: '\renewcommand{\labelitemii}{$\bullet$}'.
1790: '\renewcommand{\labelitemiii}{$\bullet$}'.
1791: '\renewcommand{\labelitemiv}{$\bullet$}';
1792: } elsif ($TeXtype eq 'circle') {
1793: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1794: '\renewcommand{\labelitemii}{$\circ$}'.
1795: '\renewcommand{\labelitemiii}{$\circ$}'.
1796: '\renewcommand{\labelitemiv}{$\circ$}';
1797: } elsif ($TeXtype eq 'square') {
1798: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1799: '\renewcommand{\labelitemii}{$\diamond$}'.
1800: '\renewcommand{\labelitemiii}{$\diamond$}'.
1801: '\renewcommand{\labelitemiv}{$\diamond$}';
1802: }
1803: $currentstring .= '\strut \begin{itemize}';
1804: }
1805: return $currentstring;
1806: }
1807:
1808: sub end_ul {
1809: my ($target,$token) = @_;
1810: my $currentstring = '';
1811: if ($target eq 'web' || $target eq 'webgrade') {
1812: $currentstring = $token->[2];
1813: } elsif ($target eq 'tex') {
1814: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1815: '\renewcommand{\labelitemii}{$\bullet$}'.
1816: '\renewcommand{\labelitemiii}{$\bullet$}'.
1817: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1818: }
1819: return $currentstring;
1820: }
1821:
1822: #-- <menu> tag (end tag required)
1823: sub start_menu {
1824: my ($target,$token) = @_;
1825: my $currentstring = '';
1826: if ($target eq 'web' || $target eq 'webgrade') {
1827: $currentstring = $token->[4];
1828: } elsif ($target eq 'tex') {
1829: $currentstring = " \\begin{itemize} ";
1830: }
1831: return $currentstring;
1832: }
1833:
1834: sub end_menu {
1835: my ($target,$token) = @_;
1836: my $currentstring = '';
1837: if ($target eq 'web' || $target eq 'webgrade') {
1838: $currentstring = $token->[2];
1839: } elsif ($target eq 'tex') {
1840: $currentstring = " \\end{itemize}";
1841: }
1842: return $currentstring;
1843: }
1844:
1845: #-- <dir> tag (end tag required)
1846: sub start_dir {
1847: my ($target,$token) = @_;
1848: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1849: if ($target eq 'web' || $target eq 'webgrade') {
1850: $currentstring .= $token->[4];
1851: } elsif ($target eq 'tex') {
1852: $currentstring .= " \\begin{itemize} ";
1853: }
1854: return $currentstring;
1855: }
1856:
1857: sub end_dir {
1858: my ($target,$token) = @_;
1859: my $currentstring = '';
1860: if ($target eq 'web' || $target eq 'webgrade') {
1861: $currentstring = $token->[2];
1862: } elsif ($target eq 'tex') {
1863: $currentstring = " \\end{itemize}";
1864: }
1865: return $currentstring;
1866: }
1867:
1868: #-- <ol> tag (end tag required)
1869: sub start_ol {
1870: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1871: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1872: if ($target eq 'web' || $target eq 'webgrade') {
1873: $currentstring .= $token->[4];
1874: } elsif ($target eq 'tex') {
1875: $Apache::londefdef::list_index=0;
1876: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1877: if ($type eq '1') {
1878: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1879: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1880: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1881: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1882: } elsif ($type eq 'A') {
1883: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1884: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1885: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1886: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1887: } elsif ($type eq 'a') {
1888: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1889: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1890: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1891: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1892: } elsif ($type eq 'i') {
1893: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1894: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1895: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1896: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1897: } elsif ($type eq 'I') {
1898: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1899: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1900: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1901: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1902: }
1903: $currentstring .= '\strut \begin{enumerate}';
1904: }
1905: return $currentstring;
1906: }
1907:
1908: sub end_ol {
1909: my ($target,$token) = @_;
1910: my $currentstring = '';
1911: if ($target eq 'web' || $target eq 'webgrade') {
1912: $currentstring = $token->[2];
1913: } elsif ($target eq 'tex') {
1914: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1915: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1916: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1917: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1918: }
1919: return $currentstring;
1920: }
1921:
1922: #-- <dl> tag (end tag required)
1923: sub start_dl {
1924: my ($target,$token) = @_;
1925: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1926: if ($target eq 'web' || $target eq 'webgrade') {
1927: $currentstring .= $token->[4];
1928: } elsif ($target eq 'tex') {
1929: $currentstring .= '\begin{description}';
1930: $Apache::londefdef::DL++;
1931: push(@Apache::londefdef::description,[]);
1932: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1933: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1934: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1935: }
1936: return $currentstring;
1937: }
1938:
1939: sub end_dl {
1940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1941: my $currentstring = '';
1942: if ($target eq 'web' || $target eq 'webgrade') {
1943: $currentstring = $token->[2];
1944: } elsif ($target eq 'tex') {
1945: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1946: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1947: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1948: $currentstring.=' '.$element.' ';
1949: }
1950: pop(@Apache::londefdef::description);
1951: $currentstring.='\end{description}';
1952: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1953: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1954: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1955: $Apache::londefdef::DL--;
1956: }
1957: return $currentstring;
1958: }
1959:
1960: #-- <dt> tag (end tag optional)
1961: sub start_dt {
1962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1963: my $currentstring='';
1964: if ($target eq 'web' || $target eq 'webgrade') {
1965: $currentstring = $token->[4];
1966: } elsif ($target eq 'tex') {
1967: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1968: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1969: &Apache::lonxml::startredirection();
1970: $Apache::londefdef::DT[-1]++;
1971: $Apache::londefdef::seenDT[-1]=1;
1972: }
1973: return $currentstring;
1974: }
1975:
1976: sub end_dt {
1977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1978: my $currentstring = '';
1979: if ($target eq 'web' || $target eq 'webgrade') {
1980: $currentstring = $token->[2];
1981: } elsif ($target eq 'tex') {
1982: if ($Apache::londefdef::DT[-1]) {
1983: my $data=&item_cleanup();
1984: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1985: $Apache::londefdef::DT[-1]--;
1986: }
1987: }
1988: return $currentstring;
1989: }
1990:
1991: sub item_cleanup {
1992: my $item=&Apache::lonxml::endredirection();
1993: $item=~s/\\begin{center}//g;
1994: $item=~s/\\end{center}//g;
1995: return $item;
1996: }
1997:
1998: #-- <dd> tag (end tag optional)
1999: sub start_dd {
2000: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2001: my $currentstring = '';
2002: if ($target eq 'web' || $target eq 'webgrade') {
2003: $currentstring = $token->[4];
2004: } elsif ($target eq 'tex') {
2005: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2006: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2007: if (!$Apache::londefdef::seenDT[-1]) {
2008: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2009: }
2010: push(@{$Apache::londefdef::description[-1]},'');
2011: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2012: $Apache::londefdef::DD[-1]++;
2013: &Apache::lonxml::startredirection();
2014: }
2015: return $currentstring;
2016: }
2017:
2018: sub end_dd {
2019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2020: my $currentstring = '';
2021: if ($target eq 'web' || $target eq 'webgrade') {
2022: $currentstring = $token->[2];
2023: } elsif ($target eq 'tex') {
2024: $Apache::londefdef::description[-1]->[-1].=
2025: &Apache::lonxml::endredirection().' \vskip 0mm ';
2026: $Apache::londefdef::DD[-1]--;
2027: }
2028: return $currentstring;
2029: }
2030:
2031: #-- <table> tag (end tag required)
2032: # <table> also ends any prior <p> that is not closed.
2033: # but, unless I allow <p>'s to nest, that's the
2034: # only way I could think of to allow <p> in
2035: # <tr> <th> bodies
2036: #
2037: #list of supported attributes: border,width,TeXwidth,TeXtheme
2038: # align
2039: sub start_table {
2040: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2041: my $textwidth = '';
2042: my $currentstring = &end_p();
2043: if ($target eq 'web' || $target eq 'webgrade') {
2044: $currentstring .= $token->[4];
2045: } elsif ($target eq 'tex') {
2046: &disable_para(); # Can't have paras in a table.
2047:
2048: # Get the parameters that we can do something about:
2049:
2050: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2051: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2052: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2053: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2054: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2055:
2056: # The only thing that needs any figuring out is the width.. and then only if it is
2057: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2058: #
2059:
2060: my $table = new Apache::lontable();
2061: if ((defined $border) && ($border > 0)) {
2062: # &Apache::lonnet::logthis("Turning on table borders: $border");
2063: $table->table_border(1);
2064: if (!defined $cell_border) {
2065: $table->cell_border(1); # Default for rules is all if rules not defined.
2066: }
2067: }
2068:
2069: if ((defined $cell_border)) {
2070: if ($cell_border eq 'all') {
2071: $table->cell_border(1);
2072: } elsif ($cell_border eq 'rows') {
2073: $table->cell_border(2);
2074: } elsif ($cell_border eq 'cols') {
2075: $table->cell_border(3);
2076: } elsif($cell_border eq 'groups') {
2077: $table->cell_border(4);
2078: } else {
2079: $table->cell_border(0);
2080: }
2081: }
2082: if (defined $theme) {
2083: $table->theme($theme);
2084: }
2085: if (defined $align) {
2086: $table->alignment($align);
2087: }
2088:
2089: # Missing width is most of page width
2090:
2091: if (!(defined $width)) {
2092: $width = '70%';
2093: }
2094:
2095: # If a percentage, need to calculate what this means in terms of
2096: # page width:
2097:
2098: if ($width =~ /%$/) {
2099: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2100: $width =~ s/%//;
2101: $width = $width * $textwidth / 100.0;
2102: $width .= " mm";
2103: $table->width($width);
2104: }
2105:
2106: push(@Apache::londefdef::table, $table);
2107: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2108:
2109: }
2110: return $currentstring;
2111: }
2112:
2113: sub end_table {
2114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2115: my $currentstring = '';
2116: if ($target eq 'web' || $target eq 'webgrade') {
2117: $currentstring = $token->[2];
2118: } elsif ($target eq 'tex') {
2119:
2120:
2121: my $table = pop(@Apache::londefdef::table);
2122: my $t = $table->generate();
2123: $currentstring = $t->generate_string();
2124: &enable_para();
2125: #--------------------------------------------------------------
2126: # Old table code:
2127: #--------------------------------------------------------------
2128:
2129: if (0) {
2130:
2131: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2132: my $inmemory = '';
2133: my $output = '';
2134: my $WARNING='';
2135: #width of columns from TeXwidth attributes
2136:
2137: # Protect against unbalanced </table> tag.
2138:
2139: if (scalar(@Apache::londefdef::table) > 0) {
2140:
2141: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2142: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2143: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2144: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2145: }
2146: }
2147: }
2148: #free space and number of empty columns
2149: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2150: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2151: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2152: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2153: $empty_columns++;
2154: } else {
2155: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2156: }
2157: }
2158:
2159: #boundaries for contents columns
2160: my @min_len=();#columns can not be narrower
2161: my @max_len=();#maximum length of column
2162: my $avg_max;
2163: my $avg_min;
2164: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2165: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2166: my ($localmin,$localmax)=(0,0);
2167: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2168: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2169: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2170: }
2171: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2172: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2173: }
2174: }
2175: push @min_len, $localmin;
2176: push @max_len, $localmax;
2177: $avg_max = $localmax + $avg_max;
2178: $avg_min = $localmin + $avg_min;
2179: }
2180: # Does not really matter what the average max/min are if there are no cols.
2181: # and this prevents div 0 in that case.
2182:
2183: if ($counter_cols != 0) {
2184: $avg_max = $avg_max/$counter_cols;
2185: $avg_min = $avg_min/$counter_cols;
2186: }
2187:
2188:
2189: # I don't think the below is needed.. but just in case:
2190:
2191: if ($avg_min > $avg_max) {
2192: my $temp = $avg_min;
2193: $avg_min = $avg_max;
2194: $avg_max = $temp;
2195: }
2196:
2197:
2198: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2199: my $localmin=0,;
2200: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2201: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2202: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2203: }
2204: }
2205: if ($max_len[$jn]<$localmin) {
2206: $max_len[$jn]=$localmin;
2207: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2208: }#object size is bigger
2209: if ($min_len[$jn]<$localmin) {
2210: $min_len[$jn]=$localmin;
2211: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2212: }#object size is bigger
2213: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2214: $min_len[$jn]=0;
2215: $max_len[$jn]=0;
2216: }
2217: # Spans seem to be really bothered by max/min = 0. So if we have one
2218: # make it an average joe max/min.
2219:
2220: if ($max_len[$jn] == 0) {
2221: $max_len[$jn] = $avg_max;
2222: }
2223: if ($min_len[$jn] == 0) {
2224: $min_len[$jn] = $avg_min;
2225: }
2226:
2227: }
2228: #final adjustment of column width
2229: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2230: my @adjust=();
2231: #step 1. adjustment by maximum value
2232: my $space_needed=0;
2233: for (my $jn=0;$jn<=$#max_len;$jn++) {
2234: $space_needed=$space_needed+$max_len[$jn];
2235: }
2236: if ($space_needed<=$available_space) {
2237:
2238: for (my $jn=0;$jn<=$#max_len;$jn++) {
2239: if ($fwidth[$jn]==0) {
2240: $fwidth[$jn]=$max_len[$jn];
2241: }
2242: }
2243: } else {
2244: #step 2. adjustment by minimum value (estimation)
2245: $space_needed=0;
2246: for (my $jn=0;$jn<=$#min_len;$jn++) {
2247: $space_needed+=$min_len[$jn];
2248: }
2249: if ($space_needed>$available_space) {
2250: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2251: for (my $jn=0;$jn<=$#max_len;$jn++) {
2252: if ($fwidth[$jn]==0) {
2253: $fwidth[$jn]=$min_len[$jn];
2254: }
2255: }
2256: #check if we have objects which can be scaled
2257: my $how_many_to_scale=0;
2258: my @to_scale=();
2259: for (my $jn=0;$jn<=$#max_len;$jn++) {
2260: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2261: $how_many_to_scale++;
2262: push @to_scale, $jn;
2263: }
2264: }
2265: if ($how_many_to_scale>0) {
2266: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2267: foreach my $jn (@to_scale) {
2268: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2269: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2270: if ($1 ne '') {
2271: my $current_length=&recalc($1);
2272: $current_length=~/(\d+\.?\d*)/;
2273: $current_length=$current_length-$space_to_adjust;
2274: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2275: }
2276: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2277: if ($1 ne '') {
2278: my $current_length=$1;
2279: $current_length=$current_length-$space_to_adjust;
2280: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2281: }
2282: }
2283: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2284: }
2285: }
2286: } else {
2287: #step 3. adjustment over minimal + corrections
2288: my $enlarge_coef=$available_space/$space_needed;
2289: my $acsessive=0;
2290: for (my $jn=0;$jn<=$#min_len;$jn++) {
2291: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2292: if ($adjust[$jn]>$max_len[$jn]) {
2293: $fwidth[$jn]=$max_len[$jn];
2294: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2295: $adjust[$jn]=0;
2296:
2297: }
2298: }
2299: if ($acsessive>0) {
2300: #we have an excess of space and can redistribute it
2301: my $notempty_columns=0;
2302: for (my $jn=0;$jn<=$#min_len;$jn++) {
2303: if ($adjust[$jn]!=0) {
2304: $notempty_columns++;
2305: }
2306: }
2307: my $per_column=$acsessive/$notempty_columns;
2308: for (my $jn=0;$jn<=$#min_len;$jn++) {
2309: if ($adjust[$jn]!=0) {
2310: $adjust[$jn]+=$per_column;
2311: $fwidth[$jn]=$adjust[$jn];
2312: }
2313: }
2314: } else {
2315: for (my $jn=0;$jn<=$#min_len;$jn++) {
2316: $fwidth[$jn]=$adjust[$jn];
2317: }
2318: }
2319: }
2320: }
2321: # use all available width or specified width as if not specified,
2322: # the specified width gets defaulted to the available width.
2323:
2324: my $current=0;
2325: for (my $i=0;$i<=$#fwidth;$i++) {
2326: $current+=$fwidth[$i];
2327: }
2328: if ($current == 0) {
2329: $current = $Apache::londefdef::table[-1]{'width'};
2330: }
2331: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2332: for (my $i=0;$i<=$#fwidth;$i++) {
2333: $fwidth[$i]*=$coef;
2334: }
2335: #removing of empty columns if allowed
2336: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2337: if ($permission eq 'yes') {
2338: my @cleaned_table=();
2339: my @cleaned_header=();
2340: my $colind=0;
2341: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2342: if ($fwidth[$jn]!=0) {
2343: #we need to copy column
2344: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2345: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2346: $cleaned_header[$colind]=$fwidth[$jn];
2347: }
2348: $colind++;
2349: }
2350: }
2351: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2352: @fwidth=@cleaned_header;
2353: }
2354:
2355:
2356: #construct header of the table
2357: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2358: for (my $in=0;$in<=$#fwidth;$in++) {
2359: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2360: }
2361: $header_of_table .= '}';
2362:
2363: #fill the table
2364: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2365: my $have_rowspan = 0;
2366: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2367:
2368: #-----------------------------------------------------------
2369: # I think this order of doing things will ensure that
2370: # single rowspan, columspan and combined row/colspans will
2371: # work correctly. LaTeX is delicate here.
2372: # RF.
2373:
2374: # Start a rowspan if necessary:
2375:
2376: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2377: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2378: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2379: #
2380: # Do the appropriate magic if this has a colspan
2381: #
2382:
2383: my $border_char = "";
2384: if ($border) {
2385: $border_char = "|";
2386: }
2387: my $spanwidth = 0;
2388: if ($colspan > 1) {
2389: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2390: $spanwidth += $fwidth[$spancol];
2391: }
2392: $output .= '\multicolumn{'.
2393: $colspan
2394: ."}";
2395: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2396: $output .= '{'.$border_char.'c'.$border_char.'}{';
2397: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2398: $output .= '{'.$border_char.'r'.$border_char.'}{';
2399: }
2400: else {
2401: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2402: }
2403:
2404: } else {
2405: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2406: }
2407:
2408: # Rowspan... if colspan is 1, and there's an alignment we'll need
2409: # to kick in a multicolumn in order to get the alignment spec.
2410: # this must precede the multirow or LaTex gets quite upset.
2411: # Naturally if colspan > 1 we've already done that above ^
2412: #
2413: my $multirow_aligned = 0;
2414: if ($rowspan > 1) {
2415: if ($colspan == 1) {
2416: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2417: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2418: $multirow_aligned = 1;
2419: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2420: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2421: $multirow_aligned = 1;
2422: }
2423: }
2424: $have_rowspan++;
2425: if ($multirow_aligned) {
2426: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2427: } else {
2428: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2429: }
2430:
2431: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2432: s{^\s*\\par\s*}{};
2433: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2434: s{\s*\\vskip\s*0pt\s*$}{};
2435:
2436: #
2437: # If we did not throw in a multicolumn to align, then add
2438: # an extra {
2439: # so we close correctly without having to keep additional state
2440: # around
2441: #
2442: if (!$multirow_aligned) {
2443: $output .= '{';
2444: }
2445: }
2446: if (($rowspan eq '^') || ($rowspan eq '_')) {
2447: $have_rowspan++;
2448: }
2449: #--------------------------------------------------------------
2450:
2451:
2452: # For right and center alignment of single cells.
2453: # we are going to use a multicolumn with a span of 1 to specify alignment.
2454: #
2455: if ($colspan == 1 && $rowspan == 1) {
2456: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2457: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2458: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2459: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2460: }
2461: }
2462:
2463: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2464:
2465: if (($colspan == 1 && $rowspan == 1) &&
2466: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2467: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2468: $output .= '}';
2469: }
2470:
2471: # Close off any open multirow:
2472:
2473: if ($rowspan > 1) {
2474: $output .= '}}';
2475: }
2476: # Close off the colspan...
2477: #
2478: if ($colspan > 1) {
2479: $output .= '}';
2480: $jn += $colspan-1; # Adjust for number of rows really left.
2481: }
2482: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2483: }
2484: # If have_rowspan > 0, and borders are on, then
2485: # we need to do more than put an \hline at the bottom of row.
2486: # we need to do the appropriate \cline to ensure that
2487: # the spanned rows don't have \hlines through them.
2488:
2489: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2490: $output .= ' \\\\ ';
2491: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2492: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2493: if ($rowspan ne "^") {
2494: if (($rowspan <= 1) || ($rowspan eq '_')) {
2495: my $column = $jn+1;
2496: $output .= '\cline{'.$column.'-'.$column.'} ';
2497: }
2498: }
2499: }
2500:
2501: } else {
2502: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2503: }
2504: }
2505: # Note that \newline destroys alignment env's produced by e.g. <div>
2506: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2507: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2508: if ($#Apache::londefdef::table > 0) {
2509: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2510: # Figure out max/and min width by summing us and then
2511: # apply that to the current column of the table we nest in
2512: # if it's larger than the current width or the current width
2513: # is undefined.
2514: #
2515: my $min_nested_width = 0;
2516: my $max_nested_width = 0;
2517: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2518: $min_nested_width += $min_len[$col];
2519: $max_nested_width += $max_len[$col];
2520:
2521: }
2522: # Fudge in an extra 5 mm for borders etc:
2523:
2524: $min_nested_width += 5;
2525: $max_nested_width += 5;
2526:
2527: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2528: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2529: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2530: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2531: }
2532: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2533: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2534: }
2535:
2536: pop @Apache::londefdef::table;
2537: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2538: } else {
2539: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2540: pop @Apache::londefdef::table;
2541: undef @Apache::londefdef::table;
2542: }
2543: }
2544: &enable_para();
2545: }
2546: }
2547: return $currentstring;
2548: }
2549:
2550: #-- <tr> tag (end tag optional)
2551: sub start_tr {
2552: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2553: my $currentstring = '';
2554: if ($target eq 'web' || $target eq 'webgrade') {
2555: $currentstring = $token->[4];
2556: } elsif ($target eq 'tex') {
2557:
2558: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2559: $Apache::londefdef::table[-1]->start_row();
2560:
2561: if ($align ne '') {
2562: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2563: }
2564:
2565: #---------------------------------------------------------------
2566: # Old table code.
2567: #---------------------------------------------------------------
2568:
2569: if (0) {
2570: $Apache::londefdef::table[-1]{'row_number'}++;
2571: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2572: if ($alignchar ne '') {
2573: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2574: } else {
2575: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2576: }
2577: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2578: #
2579: # Need to save the number of table columns to preserve the max # columns.
2580: #
2581: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2582: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2583: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2584: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2585: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2586: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2587: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2588: }
2589: }
2590: return $currentstring;
2591: }
2592:
2593: sub end_tr {
2594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2595: my $currentstring = &end_p(); # Close any pending <p> in the row.
2596: if ($target eq 'web' || $target eq 'webgrade') {
2597: $currentstring .= $token->[2];
2598: } elsif ($target eq 'tex') {
2599:
2600: # In case the user is missing a </td> or </th> tag:
2601:
2602: if ($Apache::londefdef::TD_redirection) {
2603: &end_td_tex($parstack,$parser,$safeeval);
2604: }
2605: $Apache::londefdef::table[-1]->end_row();
2606:
2607: #-----------------------------------------------
2608: # Old table code
2609: #-----------------------------------------------
2610:
2611: if (0) {
2612: if ($Apache::londefdef::TD_redirection) {
2613: &end_td_tex($parstack,$parser,$safeeval);
2614: }
2615: # Counter columns must be the maximum number of columns seen
2616: # in the table so far so:
2617: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2618: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2619: }
2620: }
2621:
2622:
2623: }
2624: return $currentstring;
2625: }
2626:
2627: #-- <td> tag (end tag optional)
2628: sub start_td {
2629: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2630: my $currentstring = '';
2631: if ($target eq 'web' || $target eq 'webgrade') {
2632: $currentstring = $token->[4];
2633: } elsif ($target eq 'tex') {
2634: $Apache::londefdef::TD_redirection = 1;
2635: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2636: }
2637: return $currentstring;
2638: }
2639:
2640: sub tag_check {
2641: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2642: my @ar=@$parstack;
2643: for (my $i=$#ar-1;$i>=0;$i--) {
2644: if (lc($$tagstack[$i]) eq $good_tag) {
2645: &start_td_tex($parstack,$parser,$safeeval);
2646: last;
2647: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2648: splice @ar, $i+1;
2649: &end_td_tex(\@ar,$parser,$safeeval);
2650: &start_td_tex($parstack,$parser,$safeeval);
2651: last;
2652: }
2653: }
2654: return '';
2655: }
2656:
2657: #
2658: # Factor out cell configuration hash generation:
2659: #
2660:
2661: sub cell_config_hash {
2662: my ($align, $rowspan, $colspan, $width) = @_;
2663: if ($rowspan ne '') {
2664: $rowspan =~ s/^\s+|\s+$//g;
2665: }
2666: if ($colspan ne '') {
2667: $colspan =~ s/^\s+|\s+$//g;
2668: }
2669: my %config;
2670: if ($align ne '') {
2671: $config{'halign'} = $align;
2672: }
2673: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2674: $config{'colspan'} = $colspan;
2675: }
2676: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2677: $config{'rowspan'} = $rowspan;
2678: }
2679: if ($width ne '') {
2680: $config{'width'} = $width;
2681: }
2682: return \%config;
2683: }
2684:
2685: sub start_td_tex {
2686: my ($parstack,$parser,$safeeval) = @_;
2687:
2688: # At this stage, an empty cell is created with the
2689: # appropriate rowspan/colspan and alignment
2690: # attributes, but empty of text. end_td_tex will
2691: # fetch the contents from the recursive parse and
2692: # fill the cell with them:
2693: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2694: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2695: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2696: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2697: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2698:
2699: my $table = $Apache::londefdef::table[-1];
2700: $table->add_cell('', $config);
2701:
2702:
2703: #------------------------------------------------
2704: # Old table code.
2705: #------------------------------------------------
2706:
2707: if (0) {
2708:
2709: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2710: if ($alignchar eq '') {
2711: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2712: }
2713: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2714: $Apache::londefdef::table[-1]{'counter_columns'}++;
2715: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2716: if (defined $TeXwidth) {
2717: my $current_length=&recalc($TeXwidth);
2718: $current_length=~/(\d+\.?\d*)/;
2719: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2720: }
2721: }
2722: &Apache::lonxml::startredirection();
2723: return '';
2724: }
2725:
2726: sub end_td_tex {
2727:
2728: my $text = &Apache::lonxml::endredirection();
2729: my $table = $Apache::londefdef::table[-1];
2730: $table->append_cell_text($text);
2731:
2732: #-------------------------------------------------
2733: # Old table code
2734: #-------------------------------------------------
2735:
2736: if (0) {
2737: my ($parstack,$parser,$safeeval) = @_;
2738: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2739: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2740: my $data = &Apache::lonxml::endredirection();
2741:
2742: # The rowspan array of the table indicates which cells are part of a span.
2743: # n indicates the start of a span set of n rows.
2744: # ^ indicates a cell that continues a span set.
2745: # _ indicates the cell is at the bottom of a span set.
2746: # If this and subsequent cells are part of a rowspan, we must
2747: # push along the row until we find one that is not.
2748:
2749: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2750: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2751: # Part of a span.
2752: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2753: $current_column++;
2754: }
2755: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2756:
2757:
2758: # Get the column and row spans.
2759: # Colspan can be done via \multicolumn if I can figure out the data structs.
2760:
2761: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2762: if (!$colspan) {
2763: $colspan = 1;
2764: }
2765:
2766: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2767: if (!$rowspan) {
2768: $rowspan = 1;
2769: }
2770:
2771:
2772:
2773: for (my $c = 0; $c < $colspan; $c++) {
2774: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2775: for (my $i = 1; $i < $rowspan; $i++) {
2776: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2777: if ($i == ($rowspan-1)) {
2778: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2779: }
2780: }
2781: }
2782:
2783: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2784: if (defined $TeXwidth) {
2785: for (my $c = 0; $c < $colspan; $c++) {
2786: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2787: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2788: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2789: }
2790: } else {
2791: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2792: my $garbage_data=$data;
2793: my $fwidth=0;
2794: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2795: my $current_length=&recalc($1);
2796: $current_length=~/(\d+\.?\d*)/;
2797: if ($fwidth<$1) {$fwidth=$1;}
2798: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2799: }
2800: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2801: my $current_length=$1;
2802: if ($fwidth<$current_length) {$fwidth=$current_length;}
2803: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2804: }
2805: for (my $c = 0; $c < $colspan; $c++) {
2806: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2807: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2808: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2809: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2810: }
2811: } 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)*/) {
2812: my $garbage_data=$data;
2813: my $fwidth=0;
2814: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2815: my $current_length=&recalc($1);
2816: $current_length=~/(\d+\.?\d*)/;
2817: if ($fwidth<$1) {$fwidth=$1;}
2818: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2819: }
2820: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2821: my $current_length=&recalc($1);
2822: $current_length=~/(\d+\.?\d*)/;
2823: if ($fwidth<$1) {$fwidth=$1;}
2824: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2825: }
2826: for (my $c = 0; $c < $colspan; $c++) {
2827: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2828: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2829: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2830: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2831: }
2832: $data=~s/\\\\\s*$//;
2833: } else {
2834: $data=~s/^\s+(\S.*)/$1/;
2835: $data=~s/(.*\S)\s+$/$1/;
2836: $data=~s/(\s)+/$1/;
2837: my ($current_length,$min_length)=(0,0);
2838: if ($data=~/\\vskip/) {
2839: my $newdata=$data;
2840: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2841: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2842: foreach my $elementdata (@newdata) {
2843: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2844: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2845: my @words=split(/ /,$elementdata);
2846: foreach my $word (@words) {
2847: my $lengthword=2.5*&LATEX_length($word);
2848: if ($min_length<$lengthword) {$min_length=$lengthword;}
2849: }
2850: }
2851: } else {
2852: $current_length=2.5*&LATEX_length($data);
2853: my @words=split(/ /,$data);
2854: foreach my $word (@words) {
2855: my $lengthword=2*&LATEX_length($word);
2856: if ($min_length<$lengthword) {$min_length=$lengthword;}
2857: }
2858: }
2859: for (my $c = 0; $c < $colspan; $c++) {
2860: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2861: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2862: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2863: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2864: }
2865: }
2866: }
2867: # Substitute all of the tables nested in this cell in their appropriate places.
2868:
2869:
2870: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2871: for (my $in=0; $in<=$nested_count; $in++) {
2872: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2873: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2874: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2875: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2876:
2877: }
2878: # Should be be killing off the 'include' elements as they're used up?
2879:
2880: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2881:
2882:
2883:
2884:
2885: # the colspan array will indicate how many columns will be spanned by this
2886: # cell..this requires that counter_columns also be adjusted accordingly
2887: # so that the next bunch of text goes in the right cell. Note that since
2888: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2889: #
2890:
2891: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2892: for (my $i = 0; $i < ($colspan -1); $i++) {
2893: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2894: }
2895: for (my $r = 0; $r < $rowspan; $r++) {
2896: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2897: # Put empty text in spanned cols.
2898:
2899: }
2900:
2901: }
2902:
2903: return '';
2904: }
2905:
2906: sub end_td {
2907: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2908: my $currentstring = '';
2909: if ($target eq 'web' || $target eq 'webgrade') {
2910: $currentstring = $token->[2];
2911: } elsif ($target eq 'tex') {
2912: $Apache::londefdef::TD_redirection =0;
2913: &end_td_tex($parstack,$parser,$safeeval);
2914: }
2915: return $currentstring;
2916: }
2917:
2918: #-- <th> tag (end tag optional)
2919: sub start_th {
2920: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2921: my $currentstring = '';
2922: if ($target eq 'web' || $target eq 'webgrade') {
2923: $currentstring = $token->[4];
2924: } elsif ($target eq 'tex') {
2925: $Apache::londefdef::TD_redirection = 1;
2926: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2927: }
2928: return $currentstring;
2929: }
2930:
2931: sub tagg_check {
2932: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2933: my @ar=@$parstack;
2934: for (my $i=$#ar-1;$i>=0;$i--) {
2935: if (lc($$tagstack[$i]) eq $good_tag) {
2936: &start_th_tex($parstack,$parser,$safeeval);
2937: last;
2938: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2939: splice @ar, $i+1;
2940: &end_th_tex(\@ar,$parser,$safeeval);
2941: &start_th_tex($parstack,$parser,$safeeval);
2942: last;
2943: }
2944: }
2945: return '';
2946: }
2947:
2948: sub start_th_tex {
2949: my ($parstack,$parser,$safeeval) = @_;
2950:
2951: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2952: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2953: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2954:
2955: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2956: my $table = $Apache::londefdef::table[-1];
2957: $table->add_cell('\textbf{', $config);
2958:
2959: #-------------------------------------------------------------------------------------
2960: #
2961: # Old table code.
2962: #
2963: #--------------------------------------------------------------------------------------
2964:
2965: if (0) {
2966:
2967:
2968: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2969: if ($alignchar eq '') {
2970: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2971: }
2972: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2973: $Apache::londefdef::table[-1]{'counter_columns'}++;
2974: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2975: if (defined $TeXwidth) {
2976: my $current_length=&recalc($TeXwidth);
2977: $current_length=~/(\d+\.?\d*)/;
2978: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2979: }
2980: }
2981:
2982: # Accept xml until the </th> tag.
2983:
2984: &Apache::lonxml::startredirection();
2985: return '';
2986: }
2987:
2988: sub end_th_tex {
2989: my ($parstack,$parser,$safeeval) = @_;
2990:
2991: my $table = $Apache::londefdef::table[-1];
2992: my $text = &Apache::lonxml::endredirection();
2993: $table->append_cell_text($text.'}');
2994:
2995: #-----------------------------------------------------------------------------
2996: # Old table code:
2997: #-----------------------------------------------------------------------------
2998:
2999: if (0) {
3000: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3001: my $data=&Apache::lonxml::endredirection();
3002: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3003: if (defined $TeXwidth) {
3004: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3005: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3006: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3007: } else {
3008: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3009: my $garbage_data=$data;
3010: my $fwidth=0;
3011: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3012: my $current_length=&recalc($1);
3013: $current_length=~/(\d+\.?\d*)/;
3014: if ($fwidth<$1) {$fwidth=$1;}
3015: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3016: }
3017: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3018: my $current_length=$1;
3019: if ($fwidth<$current_length) {$fwidth=$current_length;}
3020: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3021: }
3022: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3023: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3024: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3025: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3026: } else {
3027: $data=~s/^\s+(\S.*)/$1/;
3028: $data=~s/(.*\S)\s+$/$1/;
3029: $data=~s/(\s)+/$1/;
3030: my ($current_length,$min_length)=(0,0);
3031: if ($data=~/\\vskip/) {
3032: my $newdata=$data;
3033: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3034: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3035: foreach my $elementdata (@newdata) {
3036: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3037: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3038: my @words=split(/ /,$elementdata);
3039: foreach my $word (@words) {
3040: my $lengthword=2.5*&LATEX_length($word);
3041: if ($min_length<$lengthword) {$min_length=$lengthword;}
3042: }
3043: }
3044: } else {
3045: $current_length=2.5*&LATEX_length($data);
3046: my @words=split(/ /,$data);
3047: foreach my $word (@words) {
3048: my $lengthword=2*&LATEX_length($word);
3049: if ($min_length<$lengthword) {$min_length=$lengthword;}
3050: }
3051: }
3052: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3053: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3054: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3055: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3056: }
3057: }
3058: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3059: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3060: }
3061: #make data bold
3062: $data='\textbf{'.$data.'}';
3063: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3064: }
3065: return'';
3066: }
3067:
3068: sub end_th {
3069: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3070: my $currentstring = &end_p(); # Close any open <p> in the row.
3071: if ($target eq 'web' || $target eq 'webgrade') {
3072: $currentstring .= $token->[2];
3073: } elsif ($target eq 'tex') {
3074: $Apache::londefdef::TD_redirection =0;
3075: &end_th_tex($parstack,$parser,$safeeval);
3076: }
3077: return $currentstring;
3078: }
3079:
3080: #-- <img> tag (end tag forbidden)
3081: #
3082: # Render the <IMG> tag.
3083: # <IMG> has the following attributes (in addition to the
3084: # standard HTML ones:
3085: # TeXwrap - Governs how the tex target will try to wrap text around
3086: # horizontally aligned images.
3087: # TeXwidth - The width of the image when rendered for print (mm).
3088: # TeXheight - The height of the image when rendered for print (mm)
3089: # (Note there seems to also be support for this as a % of page size)
3090: #
3091: sub start_img {
3092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3093: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3094: undef,1);
3095: if (! $src &&
3096: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3097: ) {
3098: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3099: return '';
3100: }
3101: &Apache::lonxml::extlink($src);
3102: my $currentstring = '';
3103: my $scaling = .3;
3104:
3105: # Render unto browsers that which are the browser's...
3106:
3107: if ($target eq 'web' || $target eq 'webgrade') {
3108: if ($env{'browser.imagesuppress'} ne 'on') {
3109: my $enc = ('yes' eq
3110: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3111: $safeeval)));
3112: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3113: $enc);
3114: } else {
3115: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3116: undef,1);
3117: if (!$alttag) {
3118: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3119: $src);
3120: }
3121: $currentstring.='[IMAGE: '.$alttag.']';
3122: }
3123:
3124: # and render unto TeX that which is LaTeX
3125:
3126: } elsif ($target eq 'tex') {
3127: #
3128: # The alignment will require some superstructure to be put around
3129: # the \includegraphics stuff. At present we can only partially
3130: # simulate the alignments offered by html.
3131: #
3132: #
3133: my $align = lc(&Apache::lonxml::get_param('align',
3134: $parstack,
3135: $safeeval,
3136: undef,1));
3137: if(!$align) {
3138: $align = "bottom"; # This is html's default so it's ours too.
3139: }
3140: #
3141: &Apache::lonxml::debug("Alignemnt = $align");
3142: # LaTeX's image/text wrapping is really bad since it wants to
3143: # make figures float.
3144: # The user has the optional parameter (applicable only to l/r
3145: # alignment to use the picins/parpic directive to get wrapped text
3146: # this is also imperfect.. that's why we give them a choice...
3147: # so they can't yell at us for our choice.
3148: #
3149: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3150: $parstack,
3151: $safeeval,
3152: undef,0);
3153: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3154: if(!$latex_rendering) {
3155: $latex_rendering = "texwrap";
3156: }
3157: # using texwrap inside a table does not work. So, if after all of this,
3158: # texwrap is on, we turn it off if we detect we're in a table:
3159: #
3160: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3161: $latex_rendering = 'parpic';
3162: }
3163:
3164: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3165:
3166: #if original bmp/gif/jpg/png file exist do following:
3167: my $origsrc=$src;
3168: my ($path,$file) = &get_eps_image($src);
3169: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3170: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3171: &Apache::lonxml::debug("path = $path file = $file src = $src");
3172: if (-e $src) {
3173: &Apache::lonxml::debug("$src exists");
3174: my ($height_param,$width_param)=
3175: &image_size($origsrc,0.3,$parstack,$safeeval);
3176: my $size;
3177: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3178: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3179: # Default size if not able to extract that (e.g. eps image).
3180:
3181: # &Apache::lonnet::logthis("Size = $size");
3182:
3183: $size='['.$size;
3184: $size=~s/,$/]/;
3185: $currentstring .= '\graphicspath{{'.$path.'}}'
3186: .'\includegraphics'.$size.'{'.$file.'} ';
3187: my $closure;
3188: ($currentstring, $closure) = &align_latex_image($align,
3189: $latex_rendering,
3190: $currentstring,
3191: $width_param,
3192: $height_param);
3193: $currentstring .= $closure;
3194:
3195: } else {
3196: &Apache::lonxml::debug("$src does not exist");
3197: #original image file doesn't exist so check the alt attribute
3198: my $alt =
3199: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3200: unless ($alt) {
3201: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3202: }
3203:
3204: if ($alt) { $currentstring .= ' '.$alt.' '; }
3205: }
3206:
3207: # And here's where the semi-quote breaks down: allow the user
3208: # to edit the beast as well by rendering the problem for edit:
3209: } elsif ($target eq 'edit') {
3210: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3211: $currentstring .=&Apache::edit::tag_start($target,$token);
3212: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3213: &Apache::edit::browse('src',undef,'alt',$only).' '.
3214: &Apache::edit::search('src',undef,'alt').'<br />';
3215: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3216: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3217: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3218: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3219: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3220: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3221: ['','bottom','middle','top','left','right'],$token,5);
3222: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3223: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3224: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3225: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
3226:
3227: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3228: ['no','yes'], $token, 2);
3229: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
3230: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
3231: }
3232: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3233: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3234: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3235: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3236:
3237: if ($token->[2]{'src'}=~/\$/) {
3238: $currentstring.=&mt('Variable image source');
3239: } elsif ($token->[2]{'src'}=~/\S/) {
3240: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3241: if ($width) { $currentstring.=' width="'.$width.'" '; }
3242: if ($height) { $currentstring.=' height="'.$height.'" '; }
3243: $currentstring .= ' />';
3244: } else {
3245: $currentstring.=&mt("No image source specified");
3246: }
3247: } elsif ($target eq 'modified') {
3248: my ($osrc,$owidth,$oheight)=
3249: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3250: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3251: $safeeval,'src','alt','align',
3252: 'TeXwidth','TeXheight', 'TeXwrap',
3253: 'width','height','encrypturl');
3254: my ($nsrc,$nwidth,$nheight)=
3255: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3256: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3257: &image_replication($loc);
3258: my ($iwidth,$iheight);
3259: if (-e $loc) {
3260: my $image = Image::Magick->new;
3261: $image->Read($loc);
3262: ($iwidth, $iheight) = ($image->Get('width'),
3263: $image->Get('height'));
3264: }
3265: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3266: # changed image or no size specified,
3267: # if they didn't explicitly change the
3268: # width or height use the ones from the image
3269: if ($iwidth && $iheight) {
3270: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3271: $token->[2]{'width'} = $iwidth;$ctag=1;
3272: }
3273: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3274: $token->[2]{'height'}=$iheight;$ctag=1;
3275: }
3276: }
3277: }
3278: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3279: # if we don't have a width or height
3280: if ($iwidth && $cwidth && !$cheight) {
3281: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3282: }
3283: if ($iheight && $cheight && !$cwidth) {
3284: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3285: }
3286: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3287: }
3288:
3289: return $currentstring;
3290: }
3291:
3292: sub end_img {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web' || $target eq 'webgrade') {
3296: $currentstring = $token->[2];
3297: } elsif ($target eq 'tex') {
3298: $currentstring = '';
3299: }
3300: return $currentstring;
3301: }
3302:
3303: #-- <applet> tag (end tag required)
3304: sub start_applet {
3305: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3306:
3307: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3308: &Apache::lonxml::extlink($code);
3309: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3310: undef,1);
3311: &Apache::lonxml::extlink($archive);
3312: my $currentstring = '';
3313: if ($target eq 'web' || $target eq 'webgrade') {
3314: if ($env{'browser.appletsuppress'} ne 'on') {
3315: $currentstring = $token->[4];
3316: } else {
3317: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3318: $safeeval,undef,1);
3319: unless ($alttag) {
3320: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3321: $code);
3322: }
3323: $currentstring='[APPLET: '.$alttag.']';
3324: }
3325: } elsif ($target eq 'tex') {
3326: # Turn off some stuff we can't be inside thank you LaTeX
3327:
3328:
3329: my $restart_sub = 0;
3330: my $restart_sup = 0;
3331:
3332: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3333: # using the start_ stop_ functions.. those tags only care about
3334: # $target.
3335:
3336: if (&is_inside_of($tagstack, "sub")) {
3337: $restart_sub = 1;
3338: $currentstring .= &end_sub($target, $token, $tagstack,
3339: $parstack, $parser, $safeeval);
3340: }
3341: if (&is_inside_of($tagstack, "sup")) {
3342: $restart_sup = 1;
3343: $currentstring .= &end_sup($target, $token, $tagstack,
3344: $parstack, $parser, $safeeval);
3345: }
3346:
3347: # Now process the applet; just replace it with its alt attribute.
3348:
3349: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3350: $safeeval,undef,1);
3351: unless ($alttag) {
3352: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3353: undef,1);
3354: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3355: $code);
3356: }
3357: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3358: '.}\end{center}';
3359:
3360: # Turn stuff back on that we can't be inside of.
3361:
3362: if ($restart_sub) {
3363: $currentstring .= &start_sub($target, $token, $tagstack,
3364: $parstack, $parser, $safeeval);
3365: }
3366: if ($restart_sup) {
3367: $currentstring .= &start_sup($target, $token, $tagstack,
3368: $parstack, $parser, $safeeval);
3369: }
3370: }
3371: return $currentstring;
3372: }
3373:
3374: sub end_applet {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web' || $target eq 'webgrade') {
3378: $currentstring = $token->[2];
3379: } elsif ($target eq 'tex') {
3380: }
3381: return $currentstring;
3382: }
3383:
3384: #-- <embed> tag (end tag optional/required)
3385: sub start_embed {
3386: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3387: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3388: &Apache::lonxml::extlink($src);
3389: my $currentstring = '';
3390: if ($target eq 'web' || $target eq 'webgrade') {
3391: if ($env{'browser.embedsuppress'} ne 'on') {
3392: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3393: } else {
3394: my $alttag=&Apache::lonxml::get_param
3395: ('alt',$parstack,$safeeval,undef,1);
3396: unless ($alttag) {
3397: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3398: }
3399: $currentstring='[EMBED: '.$alttag.']';
3400: }
3401: } elsif ($target eq 'tex') {
3402: }
3403: return $currentstring;
3404: }
3405:
3406: sub end_embed {
3407: my ($target,$token) = @_;
3408: my $currentstring = '';
3409: if ($target eq 'web' || $target eq 'webgrade') {
3410: $currentstring = $token->[2];
3411: } elsif ($target eq 'tex') {
3412: }
3413: return $currentstring;
3414: }
3415:
3416: #-- <param> tag (end tag forbidden)
3417: sub start_param {
3418: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3419: if (&Apache::lonxml::get_param('name',$parstack,
3420: $safeeval,undef,1)=~/^cabbase$/i) {
3421: my $value=&Apache::lonxml::get_param('value',$parstack,
3422: $safeeval,undef,1);
3423: &Apache::lonxml::extlink($value);
3424: }
3425:
3426: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3427: &Apache::lonxml::extlink($src);
3428: my $currentstring = '';
3429: if ($target eq 'web' || $target eq 'webgrade') {
3430: my %toconvert;
3431: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3432: if ($src) { $toconvert{'src'}= $src; }
3433: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3434: undef,1);
3435: if ($name=~/^cabbase$/i) {
3436: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3437: $safeeval,undef,1);
3438: }
3439: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3440: } elsif ($target eq 'tex') {
3441: }
3442: return $currentstring;
3443: }
3444:
3445: sub end_param {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web' || $target eq 'webgrade') {
3449: $currentstring = $token->[2];
3450: } elsif ($target eq 'tex') {
3451: }
3452: return $currentstring;
3453: }
3454:
3455: #-- <allow> tag
3456: sub start_allow {
3457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3458: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3459: &Apache::lonxml::extlink($src);
3460:
3461: if ($target eq 'tex') { &image_replication($src); }
3462: my $result;
3463: if ($target eq 'edit') {
3464: $result .=&Apache::edit::tag_start($target,$token);
3465: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3466: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3467: } elsif ($target eq 'modified') {
3468: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3469: $safeeval,'src');
3470: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3471: }
3472: return $result;
3473: }
3474:
3475: sub end_allow {
3476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3477: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3478: return '';
3479: }
3480:
3481: #-- Frames (end tag required)
3482: #-- <frameset>
3483: sub start_frameset {
3484: my ($target,$token) = @_;
3485: my $currentstring = ''; # Close any pending para.
3486: if ($target eq 'web' || $target eq 'webgrade') {
3487: $currentstring =
3488: &Apache::loncommon::start_page($Apache::londefdef::title,
3489: $Apache::londefdef::head,
3490: {'add_entries' => $token->[2],
3491: # 'no_title' => 1,
3492: 'force_register' => 1,
3493: 'frameset' => 1,});
3494:
3495: }
3496: return $currentstring;
3497: }
3498:
3499: sub end_frameset {
3500: my ($target,$token) = @_;
3501: my $currentstring = '';
3502: if ($target eq 'web' || $target eq 'webgrade') {
3503: $currentstring = $token->[2];
3504: }
3505: return $currentstring;
3506: }
3507:
3508: #-- <xmp> (end tag required)
3509: sub start_xmp {
3510: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3511: my $currentstring = '';
3512: if ($target eq 'web' || $target eq 'webgrade') {
3513: $currentstring .= $token->[4];
3514: } elsif ($target eq 'tex') {
3515: $currentstring .= '\begin{verbatim}';
3516: }
3517: return $currentstring;
3518: }
3519:
3520: sub end_xmp {
3521: my ($target,$token) = @_;
3522: my $currentstring = '';
3523: if ($target eq 'web' || $target eq 'webgrade') {
3524: $currentstring .= $token->[2];
3525: } elsif ($target eq 'tex') {
3526: $currentstring .= '\end{verbatim}';
3527: }
3528: return $currentstring;
3529: }
3530:
3531: #-- <pre> (end tag required)
3532: sub start_pre {
3533: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3534: my $currentstring = &end_p(); # close off pending <p>
3535: if ($target eq 'web' || $target eq 'webgrade') {
3536: $currentstring .= $token->[4];
3537: } elsif ($target eq 'tex') {
3538: $currentstring .= '\begin{verbatim}';
3539: &Apache::lonxml::disable_LaTeX_substitutions();
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_pre {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web' || $target eq 'webgrade') {
3548: $currentstring .= $token->[2];
3549: } elsif ($target eq 'tex') {
3550: $currentstring .= '\end{verbatim}';
3551: &Apache::lonxml::enable_LaTeX_substitutions();
3552: }
3553: return $currentstring;
3554: }
3555:
3556: #-- <insert>
3557: sub start_insert {
3558: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3559: my $currentstring = '';
3560: if ($target eq 'web' || $target eq 'webgrade') {
3561: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3562: $currentstring .= '<b>'.$display.'</b>';;
3563: }
3564: return $currentstring;
3565: }
3566:
3567: sub end_insert {
3568: my ($target,$token) = @_;
3569: my $currentstring = '';
3570: if ($target eq 'web' || $target eq 'webgrade') {
3571: $currentstring .= '';
3572: }
3573: return $currentstring;
3574: }
3575:
3576: #-- <externallink>
3577: sub start_externallink {
3578: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3582: $currentstring .= '<b>'.$display.'</b>';;
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_externallink {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring .= '';
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <blankspace heigth="">
3597: sub start_blankspace {
3598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3599: my $currentstring = &end_p(); # closes off any unclosed <p>
3600: if ($target eq 'tex') {
3601: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3602: $currentstring .= '\vskip '.$howmuch.' ';
3603: }
3604: return $currentstring;
3605: }
3606:
3607: sub end_blankspace {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'tex') {
3611: $currentstring .= '';
3612: }
3613: return $currentstring;
3614: }
3615:
3616: #-- <abbr> tag (end tag required)
3617: sub start_abbr {
3618: my ($target,$token) = @_;
3619: my $currentstring = '';
3620: if ($target eq 'web' || $target eq 'webgrade') {
3621: $currentstring = $token->[4];
3622: }
3623: return $currentstring;
3624: }
3625:
3626: sub end_abbr {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web' || $target eq 'webgrade') {
3630: $currentstring = $token->[2];
3631: }
3632: return $currentstring;
3633: }
3634:
3635: #-- <acronym> tag (end tag required)
3636: sub start_acronym {
3637: my ($target,$token) = @_;
3638: my $currentstring = '';
3639: if ($target eq 'web' || $target eq 'webgrade') {
3640: $currentstring = $token->[4];
3641: }
3642: return $currentstring;
3643: }
3644:
3645: sub end_acronym {
3646: my ($target,$token) = @_;
3647: my $currentstring = '';
3648: if ($target eq 'web' || $target eq 'webgrade') {
3649: $currentstring = $token->[2];
3650: }
3651: return $currentstring;
3652: }
3653:
3654: #-- <area> tag (end tag forbidden)
3655: sub start_area {
3656: my ($target,$token) = @_;
3657: my $currentstring = '';
3658: if ($target eq 'web' || $target eq 'webgrade') {
3659: $currentstring = $token->[4];
3660: }
3661: return $currentstring;
3662: }
3663:
3664: sub end_area {
3665: my ($target,$token) = @_;
3666: my $currentstring = '';
3667: if ($target eq 'web' || $target eq 'webgrade') {
3668: $currentstring = $token->[2];
3669: }
3670: return $currentstring;
3671: }
3672:
3673: #-- <base> tag (end tag forbidden)
3674: sub start_base {
3675: my ($target,$token) = @_;
3676: my $currentstring = '';
3677: if ($target eq 'web' || $target eq 'webgrade') {
3678: $currentstring = $token->[4];
3679: }
3680: return $currentstring;
3681: }
3682:
3683: sub end_base {
3684: my ($target,$token) = @_;
3685: my $currentstring = '';
3686: if ($target eq 'web' || $target eq 'webgrade') {
3687: $currentstring = $token->[2];
3688: }
3689: return $currentstring;
3690: }
3691:
3692: #-- <bdo> tag (end tag required)
3693: sub start_bdo {
3694: my ($target,$token) = @_;
3695: my $currentstring = '';
3696: if ($target eq 'web' || $target eq 'webgrade') {
3697: $currentstring = $token->[4];
3698: }
3699: return $currentstring;
3700: }
3701:
3702: sub end_bdo {
3703: my ($target,$token) = @_;
3704: my $currentstring = '';
3705: if ($target eq 'web' || $target eq 'webgrade') {
3706: $currentstring = $token->[2];
3707: }
3708: return $currentstring;
3709: }
3710:
3711: #-- <bgsound> tag (end tag optional)
3712: sub start_bgsound {
3713: my ($target,$token) = @_;
3714: my $currentstring = '';
3715: if ($target eq 'web' || $target eq 'webgrade') {
3716: $currentstring = $token->[4];
3717: }
3718: return $currentstring;
3719: }
3720:
3721: sub end_bgsound {
3722: my ($target,$token) = @_;
3723: my $currentstring = '';
3724: if ($target eq 'web' || $target eq 'webgrade') {
3725: $currentstring = $token->[2];
3726: }
3727: return $currentstring;
3728: }
3729:
3730: #-- <blink> tag (end tag required)
3731: sub start_blink {
3732: my ($target,$token) = @_;
3733: my $currentstring = '';
3734: if ($target eq 'web' || $target eq 'webgrade') {
3735: $currentstring = $token->[4];
3736: }
3737: return $currentstring;
3738: }
3739:
3740: sub end_blink {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web' || $target eq 'webgrade') {
3744: $currentstring = $token->[2];
3745: }
3746: return $currentstring;
3747: }
3748:
3749: #-- <blockquote> tag (end tag required)
3750: sub start_blockquote {
3751: my ($target,$token) = @_;
3752: my $currentstring = &end_p(); # Close any unclosed <p>
3753: if ($target eq 'web' || $target eq 'webgrade') {
3754: $currentstring .= $token->[4];
3755: }
3756: if ($target eq 'tex') {
3757: $currentstring .= '\begin{quote}';
3758: }
3759: return $currentstring;
3760: }
3761:
3762: sub end_blockquote {
3763: my ($target,$token) = @_;
3764: my $currentstring = '';
3765: if ($target eq 'web' || $target eq 'webgrade') {
3766: $currentstring = $token->[2];
3767: }
3768: if ($target eq 'tex') {
3769: $currentstring = '\end{quote}';
3770: }
3771: return $currentstring;
3772: }
3773:
3774: #-- <button> tag (end tag required)
3775: sub start_button {
3776: my ($target,$token) = @_;
3777: my $currentstring = '';
3778: if ($target eq 'web' || $target eq 'webgrade') {
3779: $currentstring = $token->[4];
3780: }
3781: return $currentstring;
3782: }
3783:
3784: sub end_button {
3785: my ($target,$token) = @_;
3786: my $currentstring = '';
3787: if ($target eq 'web' || $target eq 'webgrade') {
3788: $currentstring = $token->[2];
3789: }
3790: return $currentstring;
3791: }
3792:
3793: #-- <caption> tag (end tag required)
3794: sub start_caption {
3795: my ($target,$token) = @_;
3796: my $currentstring = '';
3797: if ($target eq 'web' || $target eq 'webgrade') {
3798: $currentstring = $token->[4];
3799: }
3800: return $currentstring;
3801: }
3802:
3803: sub end_caption {
3804: my ($target,$token) = @_;
3805: my $currentstring = '';
3806: if ($target eq 'web' || $target eq 'webgrade') {
3807: $currentstring = $token->[2];
3808: }
3809: return $currentstring;
3810: }
3811:
3812: #-- <col> tag (end tag forbdden)
3813: sub start_col {
3814: my ($target,$token) = @_;
3815: my $currentstring = '';
3816: if ($target eq 'web' || $target eq 'webgrade') {
3817: $currentstring = $token->[4];
3818: }
3819: return $currentstring;
3820: }
3821:
3822: sub end_col {
3823: my ($target,$token) = @_;
3824: my $currentstring = '';
3825: if ($target eq 'web' || $target eq 'webgrade') {
3826: $currentstring = $token->[2];
3827: }
3828: return $currentstring;
3829: }
3830:
3831: #-- <colgroup> tag (end tag optional)
3832: sub start_colgroup {
3833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3834: my $currentstring = '';
3835: if ($target eq 'web' || $target eq 'webgrade') {
3836: $currentstring = $token->[4];
3837: }
3838: if ($target eq 'tex') {
3839: # TODO: Ensure this tag is in a table:
3840:
3841: # Fetch the attributes and build the hash for the
3842: # call to define_colgroup.
3843:
3844: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3845: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3846:
3847: my %colgroup_params;
3848: if ($span ne '') {
3849: $colgroup_params{'span'} = $span;
3850: }
3851: if ($halign ne '') {
3852: $colgroup_params{'halign'} = $halign;
3853: }
3854:
3855: my $table = $Apache::londefdef::table[-1];
3856: $table->define_colgroup(\%colgroup_params);
3857:
3858: }
3859: return $currentstring;
3860: }
3861:
3862: sub end_colgroup {
3863: my ($target,$token) = @_;
3864: my $currentstring = '';
3865: if ($target eq 'web' || $target eq 'webgrade') {
3866: $currentstring = $token->[2];
3867: }
3868: return $currentstring;
3869: }
3870:
3871: #-- <del> tag (end tag required)
3872: sub start_del {
3873: my ($target,$token) = @_;
3874: my $currentstring = '';
3875: if ($target eq 'web' || $target eq 'webgrade') {
3876: $currentstring = $token->[4];
3877: }
3878: return $currentstring;
3879: }
3880:
3881: sub end_del {
3882: my ($target,$token) = @_;
3883: my $currentstring = '';
3884: if ($target eq 'web' || $target eq 'webgrade') {
3885: $currentstring = $token->[2];
3886: }
3887: return $currentstring;
3888: }
3889:
3890: #-- <fieldset> tag (end tag required)
3891: sub start_fieldset {
3892: my ($target,$token) = @_;
3893: my $currentstring = '';
3894: if ($target eq 'web' || $target eq 'webgrade') {
3895: $currentstring = $token->[4];
3896: }
3897: return $currentstring;
3898: }
3899:
3900: sub end_fieldset {
3901: my ($target,$token) = @_;
3902: my $currentstring = '';
3903: if ($target eq 'web' || $target eq 'webgrade') {
3904: $currentstring = $token->[2];
3905: }
3906: return $currentstring;
3907: }
3908:
3909: #-- <frame> tag (end tag forbidden)
3910: sub start_frame {
3911: my ($target,$token) = @_;
3912: my $currentstring = '';
3913: if ($target eq 'web' || $target eq 'webgrade') {
3914: $currentstring = $token->[4];
3915: }
3916: return $currentstring;
3917: }
3918:
3919: sub end_frame {
3920: my ($target,$token) = @_;
3921: my $currentstring = '';
3922: if ($target eq 'web' || $target eq 'webgrade') {
3923: $currentstring = $token->[2];
3924: }
3925: return $currentstring;
3926: }
3927:
3928: #-- <iframe> tag (end tag required)
3929: sub start_iframe {
3930: my ($target,$token) = @_;
3931: my $currentstring = '';
3932: if ($target eq 'web' || $target eq 'webgrade') {
3933: $currentstring = $token->[4];
3934: }
3935: return $currentstring;
3936: }
3937:
3938: sub end_iframe {
3939: my ($target,$token) = @_;
3940: my $currentstring = '';
3941: if ($target eq 'web' || $target eq 'webgrade') {
3942: $currentstring = $token->[2];
3943: }
3944: return $currentstring;
3945: }
3946:
3947: #-- <ins> tag (end tag required)
3948: sub start_ins {
3949: my ($target,$token) = @_;
3950: my $currentstring = '';
3951: if ($target eq 'web' || $target eq 'webgrade') {
3952: $currentstring = $token->[4];
3953: }
3954: return $currentstring;
3955: }
3956:
3957: sub end_ins {
3958: my ($target,$token) = @_;
3959: my $currentstring = '';
3960: if ($target eq 'web' || $target eq 'webgrade') {
3961: $currentstring = $token->[2];
3962: }
3963: return $currentstring;
3964: }
3965:
3966: #-- <isindex> tag (end tag forbidden)
3967: sub start_isindex {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[4];
3972: }
3973: return $currentstring;
3974: }
3975:
3976: sub end_isindex {
3977: my ($target,$token) = @_;
3978: my $currentstring = '';
3979: if ($target eq 'web' || $target eq 'webgrade') {
3980: $currentstring = $token->[2];
3981: }
3982: return $currentstring;
3983: }
3984:
3985: #-- <keygen> tag (end tag forbidden)
3986: sub start_keygen {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[4];
3991: }
3992: return $currentstring;
3993: }
3994:
3995: sub end_keygen {
3996: my ($target,$token) = @_;
3997: my $currentstring = '';
3998: if ($target eq 'web' || $target eq 'webgrade') {
3999: $currentstring = $token->[2];
4000: }
4001: return $currentstring;
4002: }
4003:
4004: #-- <label> tag
4005: sub start_label {
4006: my ($target,$token) = @_;
4007: my $currentstring = '';
4008: if ($target eq 'web' || $target eq 'webgrade') {
4009: $currentstring = $token->[4];
4010: }
4011: return $currentstring;
4012: }
4013:
4014: sub end_label {
4015: my ($target,$token) = @_;
4016: my $currentstring = '';
4017: if ($target eq 'web' || $target eq 'webgrade') {
4018: $currentstring = $token->[2];
4019: }
4020: return $currentstring;
4021: }
4022:
4023: #-- <layer> tag (end tag required)
4024: sub start_layer {
4025: my ($target,$token) = @_;
4026: my $currentstring = '';
4027: if ($target eq 'web' || $target eq 'webgrade') {
4028: $currentstring = $token->[4];
4029: }
4030: return $currentstring;
4031: }
4032:
4033: sub end_layer {
4034: my ($target,$token) = @_;
4035: my $currentstring = '';
4036: if ($target eq 'web' || $target eq 'webgrade') {
4037: $currentstring = $token->[2];
4038: }
4039: return $currentstring;
4040: }
4041:
4042: #-- <legend> tag (end tag required)
4043: sub start_legend {
4044: my ($target,$token) = @_;
4045: my $currentstring = '';
4046: if ($target eq 'web' || $target eq 'webgrade') {
4047: $currentstring = $token->[4];
4048: }
4049: return $currentstring;
4050: }
4051:
4052: sub end_legend {
4053: my ($target,$token) = @_;
4054: my $currentstring = '';
4055: if ($target eq 'web' || $target eq 'webgrade') {
4056: $currentstring = $token->[2];
4057: }
4058: return $currentstring;
4059: }
4060:
4061: #-- <link> tag (end tag forbidden)
4062: sub start_link {
4063: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4064: my $currentstring = '';
4065: if ($target eq 'web' || $target eq 'webgrade') {
4066: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4067: undef,1);
4068: &Apache::lonxml::extlink($href);
4069: $currentstring = $token->[4];
4070: }
4071: return $currentstring;
4072: }
4073:
4074: sub end_link {
4075: my ($target,$token) = @_;
4076: my $currentstring = '';
4077: if ($target eq 'web' || $target eq 'webgrade') {
4078: $currentstring = $token->[2];
4079: }
4080: return $currentstring;
4081: }
4082:
4083: #-- <marquee> tag (end tag optional)
4084: sub start_marquee {
4085: my ($target,$token) = @_;
4086: my $currentstring = '';
4087: if ($target eq 'web' || $target eq 'webgrade') {
4088: $currentstring = $token->[4];
4089: }
4090: return $currentstring;
4091: }
4092:
4093: sub end_marquee {
4094: my ($target,$token) = @_;
4095: my $currentstring = '';
4096: if ($target eq 'web' || $target eq 'webgrade') {
4097: $currentstring = $token->[2];
4098: }
4099: return $currentstring;
4100: }
4101:
4102: #-- <multicol> tag (end tag required)
4103: sub start_multicol {
4104: my ($target,$token) = @_;
4105: my $currentstring = &end_p(); # Close any pending <p>
4106: if ($target eq 'web' || $target eq 'webgrade') {
4107: $currentstring .= $token->[4];
4108: }
4109: return $currentstring;
4110: }
4111:
4112: sub end_multicol {
4113: my ($target,$token) = @_;
4114: my $currentstring = '';
4115: if ($target eq 'web' || $target eq 'webgrade') {
4116: $currentstring = $token->[2];
4117: }
4118: return $currentstring;
4119: }
4120:
4121: #-- <nobr> tag (end tag required)
4122: sub start_nobr {
4123: my ($target,$token) = @_;
4124: my $currentstring = '';
4125: if ($target eq 'web' || $target eq 'webgrade') {
4126: $currentstring = $token->[4];
4127: } elsif ($target eq 'tex') {
4128: $currentstring='\mbox{';
4129: }
4130: return $currentstring;
4131: }
4132:
4133: sub end_nobr {
4134: my ($target,$token) = @_;
4135: my $currentstring = '';
4136: if ($target eq 'web' || $target eq 'webgrade') {
4137: $currentstring = $token->[2];
4138: } elsif ($target eq 'tex') {
4139: $currentstring='}';
4140: }
4141: return $currentstring;
4142: }
4143:
4144: #-- <noembed> tag (end tag required)
4145: sub start_noembed {
4146: my ($target,$token) = @_;
4147: my $currentstring = '';
4148: if ($target eq 'web' || $target eq 'webgrade') {
4149: $currentstring = $token->[4];
4150: }
4151: return $currentstring;
4152: }
4153:
4154: sub end_noembed {
4155: my ($target,$token) = @_;
4156: my $currentstring = '';
4157: if ($target eq 'web' || $target eq 'webgrade') {
4158: $currentstring = $token->[2];
4159: }
4160: return $currentstring;
4161: }
4162:
4163: #-- <noframes> tag (end tag required)
4164: sub start_noframes {
4165: my ($target,$token) = @_;
4166: my $currentstring = '';
4167: if ($target eq 'web' || $target eq 'webgrade') {
4168: $currentstring = $token->[4];
4169: }
4170: return $currentstring;
4171: }
4172:
4173: sub end_noframes {
4174: my ($target,$token) = @_;
4175: my $currentstring = '';
4176: if ($target eq 'web' || $target eq 'webgrade') {
4177: $currentstring = $token->[2];
4178: }
4179: return $currentstring;
4180: }
4181:
4182: #-- <nolayer> tag (end tag required)
4183: sub start_nolayer {
4184: my ($target,$token) = @_;
4185: my $currentstring = '';
4186: if ($target eq 'web' || $target eq 'webgrade') {
4187: $currentstring = $token->[4];
4188: }
4189: return $currentstring;
4190: }
4191:
4192: sub end_nolayer {
4193: my ($target,$token) = @_;
4194: my $currentstring = '';
4195: if ($target eq 'web' || $target eq 'webgrade') {
4196: $currentstring = $token->[2];
4197: }
4198: return $currentstring;
4199: }
4200:
4201: #-- <noscript> tag (end tag required)
4202: sub start_noscript {
4203: my ($target,$token) = @_;
4204: my $currentstring = '';
4205: if ($target eq 'web' || $target eq 'webgrade') {
4206: $currentstring = $token->[4];
4207: }
4208: return $currentstring;
4209: }
4210:
4211: sub end_noscript {
4212: my ($target,$token) = @_;
4213: my $currentstring = '';
4214: if ($target eq 'web' || $target eq 'webgrade') {
4215: $currentstring = $token->[2];
4216: }
4217: return $currentstring;
4218: }
4219:
4220: #-- <object> tag (end tag required)
4221: sub start_object {
4222: my ($target,$token) = @_;
4223: my $currentstring = '';
4224: if ($target eq 'web' || $target eq 'webgrade') {
4225: $currentstring = $token->[4];
4226: }
4227: return $currentstring;
4228: }
4229:
4230: sub end_object {
4231: my ($target,$token) = @_;
4232: my $currentstring = '';
4233: if ($target eq 'web' || $target eq 'webgrade') {
4234: $currentstring = $token->[2];
4235: }
4236: return $currentstring;
4237: }
4238:
4239: #-- <optgroup> tag (end tag required)
4240: sub start_optgroup {
4241: my ($target,$token) = @_;
4242: my $currentstring = '';
4243: if ($target eq 'web' || $target eq 'webgrade') {
4244: $currentstring = $token->[4];
4245: }
4246: return $currentstring;
4247: }
4248:
4249: sub end_optgroup {
4250: my ($target,$token) = @_;
4251: my $currentstring = '';
4252: if ($target eq 'web' || $target eq 'webgrade') {
4253: $currentstring = $token->[2];
4254: }
4255: return $currentstring;
4256: }
4257:
4258: #-- <samp> tag (end tag required)
4259: sub start_samp {
4260: my ($target,$token) = @_;
4261: my $currentstring = '';
4262: if ($target eq 'web' || $target eq 'webgrade') {
4263: $currentstring = $token->[4];
4264: } elsif ($target eq 'tex') {
4265: $currentstring='\texttt{';
4266: }
4267: return $currentstring;
4268: }
4269:
4270: sub end_samp {
4271: my ($target,$token) = @_;
4272: my $currentstring = '';
4273: if ($target eq 'web' || $target eq 'webgrade') {
4274: $currentstring = $token->[2];
4275: } elsif ($target eq 'tex') {
4276: $currentstring='}';
4277: }
4278: return $currentstring;
4279: }
4280:
4281: #-- <server> tag
4282: sub start_server {
4283: my ($target,$token) = @_;
4284: my $currentstring = '';
4285: if ($target eq 'web' || $target eq 'webgrade') {
4286: $currentstring = $token->[4];
4287: }
4288: return $currentstring;
4289: }
4290:
4291: sub end_server {
4292: my ($target,$token) = @_;
4293: my $currentstring = '';
4294: if ($target eq 'web' || $target eq 'webgrade') {
4295: $currentstring = $token->[2];
4296: }
4297: return $currentstring;
4298: }
4299:
4300: #-- <spacer> tag (end tag forbidden)
4301: sub start_spacer {
4302: my ($target,$token) = @_;
4303: my $currentstring = &end_p(); # Close off any open <p> tag.
4304: if ($target eq 'web' || $target eq 'webgrade') {
4305: $currentstring .= $token->[4];
4306: }
4307: return $currentstring;
4308: }
4309:
4310: sub end_spacer {
4311: my ($target,$token) = @_;
4312: my $currentstring = '';
4313: if ($target eq 'web' || $target eq 'webgrade') {
4314: $currentstring = $token->[2];
4315: }
4316: return $currentstring;
4317: }
4318:
4319: #-- <span> tag (end tag required)
4320: sub start_span {
4321: my ($target,$token) = @_;
4322: my $currentstring = '';
4323: if ($target eq 'web' || $target eq 'webgrade') {
4324: $currentstring = $token->[4];
4325: }
4326: return $currentstring;
4327: }
4328:
4329: sub end_span {
4330: my ($target,$token) = @_;
4331: my $currentstring = '';
4332: if ($target eq 'web' || $target eq 'webgrade') {
4333: $currentstring = $token->[2];
4334: }
4335: return $currentstring;
4336: }
4337:
4338: #-- <tbody> tag (end tag optional)
4339: sub start_tbody {
4340: my ($target,$token) = @_;
4341: my $currentstring = '';
4342: if ($target eq 'web' || $target eq 'webgrade') {
4343: $currentstring = $token->[4];
4344: }
4345: if ($target eq 'tex') {
4346: # TODO: Ensure this tag is within a table:
4347:
4348: my $table = $Apache::londefdef::table[-1];
4349: $table->start_body();
4350: }
4351: return $currentstring;
4352: }
4353:
4354: sub end_tbody {
4355: my ($target,$token) = @_;
4356: my $currentstring = '';
4357: if ($target eq 'web' || $target eq 'webgrade') {
4358: $currentstring = $token->[2];
4359: }
4360: if($target eq 'tex') {
4361: # TODO: Ensure this tag is within a table:
4362:
4363: my $table = $Apache::londefdef::table[-1];
4364: $table->end_body();
4365: }
4366: return $currentstring;
4367: }
4368:
4369: #-- <tfoot> tag (end tag optional)
4370: sub start_tfoot {
4371: my ($target,$token) = @_;
4372: my $currentstring = '';
4373: if ($target eq 'web' || $target eq 'webgrade') {
4374: $currentstring = $token->[4];
4375: }
4376: if ($target eq 'tex') {
4377: # TODO: ensure this is within a table tag.
4378: my $table = $Apache::londefdef::table[-1];
4379: $table->start_foot();
4380: }
4381: return $currentstring;
4382: }
4383:
4384: sub end_tfoot {
4385: my ($target,$token) = @_;
4386: my $currentstring = '';
4387: if ($target eq 'web' || $target eq 'webgrade') {
4388: $currentstring = $token->[2];
4389: }
4390: if ($target eq 'tex') {
4391: # TODO: Ensure this is in side a table
4392: my $table = $Apache::londefdef::table[-1];
4393: $table->end_foot();
4394: }
4395: return $currentstring;
4396: }
4397:
4398: #-- <thead> tag (end tag optional)
4399: sub start_thead {
4400: my ($target,$token) = @_;
4401: my $currentstring = '';
4402: if ($target eq 'web' || $target eq 'webgrade') {
4403: $currentstring = $token->[4];
4404: }
4405: if ($target eq 'tex') {
4406: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4407: my $table = $Apache::londefdef::table[-1];
4408: $table->start_head();
4409: }
4410: return $currentstring;
4411: }
4412:
4413: sub end_thead {
4414: my ($target,$token) = @_;
4415: my $currentstring = '';
4416: if ($target eq 'web' || $target eq 'webgrade') {
4417: $currentstring = $token->[2];
4418: }
4419: if ($target eq 'tex') {
4420: # TODO: Verify we are in a table and ignore tag if not.
4421:
4422: my $table = $Apache::londefdef::table[-1];
4423: $table->end_head();
4424: }
4425: return $currentstring;
4426: }
4427:
4428: #-- <var> tag
4429: sub start_var {
4430: my ($target,$token) = @_;
4431: my $currentstring = '';
4432: if ($target eq 'web' || $target eq 'webgrade') {
4433: $currentstring = $token->[4];
4434: } elsif ($target eq 'tex') {
4435: $currentstring = '\textit{';
4436: }
4437: return $currentstring;
4438: }
4439:
4440: sub end_var {
4441: my ($target,$token) = @_;
4442: my $currentstring = '';
4443: if ($target eq 'web' || $target eq 'webgrade') {
4444: $currentstring = $token->[2];
4445: } elsif ($target eq 'tex') {
4446: $currentstring = '}';
4447: }
4448: return $currentstring;
4449: }
4450:
4451: #-- <wbr> tag (end tag forbidden)
4452: sub start_wbr {
4453: my ($target,$token) = @_;
4454: my $currentstring = '';
4455: if ($target eq 'web' || $target eq 'webgrade') {
4456: $currentstring = $token->[4];
4457: }
4458: return $currentstring;
4459: }
4460:
4461: sub end_wbr {
4462: my ($target,$token) = @_;
4463: my $currentstring = '';
4464: if ($target eq 'web' || $target eq 'webgrade') {
4465: $currentstring = $token->[2];
4466: }
4467: return $currentstring;
4468: }
4469:
4470: #-- <hideweboutput> tag
4471: sub start_hideweboutput {
4472: my ($target,$token) = @_;
4473: if ($target eq 'web' || $target eq 'webgrade') {
4474: &Apache::lonxml::startredirection();
4475: }
4476: return '';
4477: }
4478:
4479: sub end_hideweboutput {
4480: my ($target,$token) = @_;
4481: my $currentstring = '';
4482: if ($target eq 'web' || $target eq 'webgrade') {
4483: $currentstring = &Apache::lonxml::endredirection();
4484: }
4485: return '';
4486: }
4487:
4488:
4489: sub image_replication {
4490: my $src = shift;
4491: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4492: #replicates eps or ps
4493: my $epssrc = my $pssrc = $src;
4494: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4495: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4496: if (not -e $epssrc && not -e $pssrc) {
4497: my $result=&Apache::lonnet::repcopy($epssrc);
4498: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4499: }
4500: return '';
4501: }
4502:
4503:
4504:
4505: sub resize_image {
4506: my ($height_param, $width_param, $scaling,
4507: $parstack, $safeeval, $depth, $cis) = @_;
4508:
4509: # First apply the scaling...
4510:
4511: $height_param = $height_param * $scaling;
4512: $width_param = $width_param * $scaling;
4513:
4514: #do we have any specified LaTeX size of the picture?
4515: my $toget='TeXwidth';
4516: if ($cis) {
4517: $toget=lc($toget);
4518: }
4519: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4520: $safeeval,$depth,$cis);
4521: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4522: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4523: $safeeval,$depth,$cis);
4524: #do we have any specified web size of the picture?
4525: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4526: $depth,1);
4527: if ($TeXwidth) {
4528: my $old_width_param=$width_param;
4529: if ($TeXwidth=~/(\d+)\s*\%/) {
4530: $width_param = $1*$env{'form.textwidth'}/100;
4531: } else {
4532: $width_param = $TeXwidth;
4533: }
4534: if ($TeXheight) {
4535: $height_param = $TeXheight;
4536: } elsif ($old_width_param) {
4537: $height_param=$TeXwidth/$old_width_param*$height_param;
4538: }
4539: } elsif ($TeXheight) {
4540: $height_param = $TeXheight;
4541: if ($height_param) {
4542: $width_param = $TeXheight/$height_param*$width_param;
4543: }
4544: } elsif ($width) {
4545: my $old_width_param=$width_param;
4546: $width_param = $width*$scaling;
4547: if ($old_width_param) {
4548: $height_param=$width_param/$old_width_param*$height_param;
4549: }
4550: }
4551: if ($width_param > $env{'form.textwidth'}) {
4552: my $old_width_param=$width_param;
4553: $width_param =0.95*$env{'form.textwidth'};
4554: if ($old_width_param) {
4555: $height_param=$width_param/$old_width_param*$height_param;
4556: }
4557: }
4558:
4559: return ($height_param, $width_param);
4560: }
4561:
4562: sub image_size {
4563: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4564:
4565: #size of image from gif/jpg/jpeg/png
4566: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4567: if (-e $ressrc) {
4568: $src = $ressrc;
4569: }
4570: my $image = Image::Magick->new;
4571: my $current_figure = $image->Read($src);
4572: my $width_param = $image->Get('width');
4573: my $height_param = $image->Get('height');
4574: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4575: undef($image);
4576:
4577: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4578: $scaling, $parstack, $safeeval,
4579: $depth, $cis);
4580:
4581: return ($height_param, $width_param);
4582: }
4583:
4584: sub image_width {
4585: my ($height, $width) = &image_size(@_);
4586: return $width;
4587: }
4588: # Not yet 100% sure this is correct in all circumstances..
4589: # due to my uncertainty about mods to image_size.
4590: #
4591: sub image_height {
4592: my ($height, $width) = &image_size(@_);
4593: return $height;
4594: }
4595:
4596: sub get_eps_image {
4597: my ($src)=@_;
4598: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4599:
4600: # In order to prevent the substitution of the alt text, we need to
4601: # be sure the orig_src file is on system now so:
4602:
4603: if (! -e $orig_src) {
4604: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4605: }
4606: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4607: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4608: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4609: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4610: &Apache::lonxml::debug("Filelocation gives: $src");
4611: if (! -e $src) {
4612: &Apache::lonxml::debug("$src does not exist");
4613: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4614: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4615: #if replication failed try to find ps file
4616: $src=~s/\.eps$/\.ps/;
4617: &Apache::lonxml::debug("Now looking for $src");
4618: #if no ps file try to replicate it.
4619: my $didrepcopy = &Apache::lonnet::repcopy($src);
4620: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4621: if ( (not -e $src) ||
4622: ($didrepcopy ne 'ok')) {
4623: &Apache::lonxml::debug("Failed to find or replicate $src");
4624:
4625: #if replication failed try to produce eps file dynamically
4626: $src=~s/\.ps$/\.eps/;
4627: my $temp_file;
4628: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4629: my $newsrc=$orig_src;
4630: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4631: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4632: print FILE ("$newsrc\n");
4633: close(FILE);
4634: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4635: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4636: if ($sext ne "") { # Put the ext. back in to uniquify.
4637: $src =~ s/\.eps$/$sext.eps/;
4638: }
4639:
4640: }
4641:
4642: }
4643: } else {
4644: # If the postscript file has spaces in its name,
4645: # LaTeX will gratuitiously vomit. Therefore
4646: # queue such files for copy with " " replaced by "_".
4647: # printout.pm will know them by their .ps or .eps extensions.
4648: my $newsrc = $orig_src;
4649: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4650: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4651: print FILE "$src\n";
4652: close FILE;
4653: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4654: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4655: }
4656: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4657: $path =~ s/ /\_/g;
4658: $file =~ s/ /\_/g;
4659: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4660: return ($path.'/',$file);
4661: }
4662:
4663: sub eps_generation {
4664: my ($src,$file,$width_param) = @_;
4665: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4666: my $temp_file = Apache::File->new('>>'.$filename);
4667: print $temp_file "$src\n";
4668: my $newsrc = $src;
4669: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4670: $newsrc=~s{/home/httpd/html/res}{};
4671: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4672: $newsrc=~s{/\./}{/};
4673: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4674: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4675: $newsrc=~s{/home/httpd/lonUsers}{};
4676: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4677: }
4678: if ($newsrc=~m{/userfiles/}) {
4679: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4680: } else {
4681: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4682: }
4683: }
4684:
4685: sub file_path {
4686: my $src=shift;
4687: my ($file,$path);
4688: if ($src =~ m!(.*)/([^/]*)$!) {
4689: $file = $2;
4690: $path = $1.'/';
4691: }
4692: return $file,$path;
4693: }
4694:
4695:
4696: sub recalc {
4697: my $argument = shift;
4698: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4699: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4700: my $value=$1;
4701: my $units=$2;
4702: if ($units eq 'cm') {
4703: $value*=10;
4704: } elsif ($units eq 'in') {
4705: $value*=25.4;
4706: } elsif ($units eq 'pc') {
4707: $value*=(25.4*12/72.27);
4708: } elsif ($units eq 'pt') {
4709: $value*=(25.4/72.27);
4710: }
4711: return $value.' mm';
4712: }
4713:
4714: sub LATEX_length {
4715: my $garbage=shift;
4716: $garbage=~s/^\s+$//;
4717: $garbage=~s/^\s+(\S.*)/$1/;#space before
4718: $garbage=~s/(.*\S)\s+$/$1/;#space after
4719: $garbage=~s/(\s)+/$1/;#only one space
4720: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4721: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4722: $garbage=~s/([^\\])\$/$1/g;#$
4723: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4724: $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;
4725: $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;
4726: $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;
4727: $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;
4728: $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;
4729: $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;
4730: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4731: #remove some other LaTeX command
4732: $garbage=~s|\\(\w+)\\|\\|g;
4733: $garbage=~s|\\(\w+)(\s*)|$2|g;
4734: $garbage=~s|\+|11|g;
4735: my $value=length($garbage);
4736: return $value;
4737: }
4738:
4739:
4740: sub align_latex_image {
4741: my ($align, $latex_rendering, $image, $width, $height) = @_;
4742: my $currentstring; # The 1/2 wrapped image.
4743: my $closure; # The closure of the wrappage.
4744:
4745: # if it's none just return it back
4746: if ($latex_rendering eq 'none') {
4747: return ($image,'');
4748: }
4749:
4750: # If there's an alignment specification we need to honor it here.
4751: # For the horizontal alignments, we will also honor the
4752: # value of the latex specfication. The default is parbox,
4753: # and that's used for illegal values too.
4754: #
4755: # Even though we set a default alignment value, the user
4756: # could have given us an illegal value. In that case we
4757: # just use the default alignment of bottom..
4758: $currentstring = '';
4759: if ($align eq "top") {
4760: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4761: $closure = '}';
4762: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4763: my $offset = $height/2;
4764: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4765: $closure = '}';
4766: } elsif ($align eq "left") {
4767: if ($latex_rendering eq "parpic") {
4768: $currentstring .= '\parpic[l]{'.$image;
4769: $closure = '}';
4770: } elsif ($latex_rendering eq "parbox") {
4771: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4772: .$image;
4773: $closure = '\end{minipage}';
4774: } elsif ($latex_rendering eq "wrapfigure"
4775: || $latex_rendering ne 'none') { # wrapfig render
4776: $currentstring .=
4777: '\begin{wrapfigure}{l}{'.$width.'mm}'
4778: .'\scalebox{1.0}{'.$image;
4779: $closure = '}\end{wrapfigure}';
4780: }
4781: } elsif ($align eq "right") {
4782: if ($latex_rendering eq "parpic") {
4783: $currentstring .= '\parpic[r]{'.$image;
4784: $closure = '}';
4785: } elsif ($latex_rendering eq "parbox") {
4786: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4787: .$image;
4788: $closure = '\end{minipage}';
4789: } elsif ($latex_rendering eq "wrapfigure"
4790: || $latex_rendering ne 'none') { # wrapfig render
4791: $currentstring .=
4792: '\begin{wrapfigure}{r}{'.$width.'mm}'
4793: .'\scalebox{1.0}{'.$image;
4794: $closure = '}\end{wrapfigure}';
4795: }
4796: } else { # Bottom is also default.
4797: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4798: $currentstring .= "{$image";
4799: $closure = '}';
4800: }
4801: return ($currentstring, $closure);
4802: }
4803:
4804:
4805: sub is_inside_of {
4806: my ($tagstack, $tag) = @_;
4807: my @stack = @$tagstack;
4808: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4809: if ($stack[$i] eq $tag) {
4810: return 1;
4811: }
4812: }
4813: return 0;
4814: }
4815:
4816:
4817: #
4818: # This sub provides the typical LaTeX prefix matter for tex output:
4819: #
4820: sub latex_header {
4821: my ($mode) = @_;
4822: my $currentstring = '';
4823:
4824: $currentstring .=
4825: "\n% &Apache::lonxml::londefdef \n" .
4826: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4827: if (($env{'form.latex_type'}=~'batchmode') ||
4828: (!$env{'request.role.adv'}) ||
4829: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4830: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4831: '\renewcommand{\deg}{$^{\circ}$}'.
4832: '\usepackage{multirow}'.
4833: '\usepackage{longtable}'.
4834: '\usepackage{textcomp}'.
4835: '\usepackage{makeidx}'.
4836: '\usepackage[dvips]{graphicx}'.
4837: '\usepackage{wrapfig}'.
4838: '\usepackage{picins}'.
4839: '\usepackage[T1]{fontenc}'."\n".
4840: '\usepackage{lmodern}'."\n".
4841: '\usepackage[postscript]{ucs}'."\n".
4842: '\usepackage[utf8x]{inputenc}'."\n".
4843: '\usepackage{pifont}' ."\n".
4844: '\usepackage{latexsym}'."\n".
4845: '\usepackage{epsfig}'.
4846: "\\usepackage{xtab}\n".
4847: "\\usepackage{tabularx}\n".
4848: "\\usepackage{booktabs}\n".
4849: "\\usepackage{array}\n".
4850: "\\usepackage{colortbl}\n".
4851: "\\usepackage{xcolor}\n".
4852: '\usepackage{calc}'.
4853: '\usepackage{amsmath}'.
4854: '\usepackage{amssymb}'.
4855: '\usepackage{amsfonts}'.
4856: '\usepackage{amsthm}'.
4857: '\usepackage{amscd}'
4858: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4859: '\usepackage[T1]{fontenc}'."\n".
4860: '\usepackage{lmodern}'."\n".
4861: '\usepackage[postscript]{ucs}'."\n".
4862: '\usepackage[utf8x]{inputenc}'."\n".
4863: '\usepackage{pifont}' . "\n";
4864:
4865: if($env{'form.pdfFormFields'} eq 'yes') {
4866: $currentstring .= '\usepackage{hyperref}'.
4867: '\usepackage{eforms}'.
4868: '\usepackage{tabularx}';
4869: }
4870:
4871: $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}}'.
4872: '\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}}';
4873: $currentstring .= '\begin{document}';
4874:
4875: return $currentstring;
4876:
4877: }
4878:
4879: =pod
4880:
4881: =head1 NAME
4882:
4883: Apache::londefdef.pm
4884:
4885: =head1 SYNOPSIS
4886:
4887: Tags Default Definition Module
4888:
4889: This is part of the LearningOnline Network with CAPA project
4890: described at http://www.lon-capa.org.
4891:
4892:
4893: =head1 NOTABLE SUBROUTINES
4894:
4895: =over
4896:
4897: =item start_hideweboutput()
4898:
4899: =item end_hideweboutput()
4900:
4901: =item image_replication()
4902:
4903: =item resize_image()
4904:
4905: Get correct sizing parameter for an image given
4906: it's initial ht. and wid. This allows sizing of
4907: images that are generated on-the-fly (e.g. gnuplot)
4908: as well as serving as a utility for image_size.
4909:
4910: Parameter:
4911: height_param
4912: width_param - Initial picture dimensions.
4913: scaling - A scale factor.
4914: parstack, - the current stack of tag attributes
4915: from the xml parser
4916: safeeval, - pointer to the safespace
4917: depth, - from what level in the stack to look for attributes
4918: (assumes -1 if unspecified)
4919: cis - look for attrubutes case insensitively
4920: (assumes false)
4921:
4922: Returns:
4923: height, width - new dimensions.
4924:
4925: =item image_size()
4926:
4927: =item image_width()
4928:
4929: =item image_height()
4930:
4931: =item get_eps_image()
4932:
4933: =item eps_generation()
4934:
4935: =item file_path()
4936:
4937: =item recalc()
4938:
4939: Converts a measurement in to mm from any of
4940: the other valid LaTeX units of measure.
4941: If the units of measure are missing from the
4942: parameter, it is assumed to be in and returned
4943: with mm units of measure
4944:
4945: =item LATEX_length()
4946:
4947: =item align_latex_image()
4948:
4949: Wrap image 'stuff' inside of the LaTeX required to implement
4950: alignment:
4951: align_tex_image(align, latex_rendering, image)
4952: Where:
4953: align - The HTML alignment specification.
4954: latex_rendering - rendering hint for latex.
4955: image - The LaTeX needed to insert the image itsef.
4956: width,height - dimensions of the image.
4957: Returns:
4958: The 1/2 wrapped image and the stuff required to close the
4959: wrappage. This allows e.g. randomlabel to insert more stuff
4960: into the closure.
4961:
4962:
4963: =item is_inside_of($tagstack, $tag)
4964: This sub returns true if the current state of Xml processing is inside of the tag.
4965: Parameters:
4966: tagstack - The tagstack from the parser.
4967: tag - The tag (without the <>'s.).
4968: Sample usage:
4969: if (is_inside_of($tagstack "table")) {
4970: I'm in a table....
4971: }
4972:
4973:
4974:
4975: =back
4976:
4977: =cut
4978:
4979:
4980: 1;
4981: __END__
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