1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.405 2009/05/15 18:06:20 bisitz 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::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: $currentstring =
542: &Apache::loncommon::start_page($Apache::londefdef::title,
543: $Apache::londefdef::head
544: .$extra_head,
545: {'add_entries' => $token->[2],
546: # 'no_title' => 1,
547: 'force_register' => 1});
548:
549: if ($env{'request.state'} ne 'published') {
550: $currentstring.=&Apache::lonmenu::constspaceform();
551: $currentstring.=&Apache::londefdef::edit_controls();
552: }
553: $currentstring.=&Apache::lonxml::message_location();
554: } elsif ($target eq 'tex') {
555: $currentstring = ''; # '\begin{document}' is in header.
556: }
557: return $currentstring;
558: }
559:
560: sub edit_controls {
561: my ($nochgview) = @_;
562: my $result .= '
563: <form method="post">
564: <div class="LC_edit_problem_header">';
565: unless ($nochgview) {
566: $result .= '
567: <div class="LC_edit_problem_header_row1">'.
568: &Apache::lonxml::renderingoptions().'
569: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
570: </div>';
571: }
572: $result .= '
573: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
574: </form>
575: <br />';
576: return $result;
577: }
578:
579: sub end_body {
580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
581: my $currentstring = &end_p(); # Close off unclosed <p>
582: if ($target eq 'web' || $target eq 'webgrade') {
583: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
584: } elsif ($target eq 'tex') {
585: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
586: }
587: return $currentstring;
588: }
589:
590: # \begin{center} causes a new paragprah spacing that looks odd inside
591: # of a table cell. Same at the end of a \center but with a slightly
592: # larger space .. hence center_correction and center_end_correction.
593: #
594: sub center_correction { return '\vspace*{-6 mm}'; }
595: sub center_end_correction { return '\vspace*{-7 mm}'; }
596:
597: #-- <center> tag (end tag required)
598: sub start_center {
599: my ($target,$token,$tagstack) = @_;
600: my $currentstring = &end_p(); # Close off any prior para.
601: if ($target eq 'web' || $target eq 'webgrade') {
602: $currentstring .= $token->[4];
603: } elsif ($target eq 'tex') {
604: if (&is_inside_of($tagstack, "table")) {
605: $currentstring .= ¢er_correction();
606: }
607: $currentstring .= '\begin{center}';
608: }
609: return $currentstring;
610: }
611:
612: sub end_center {
613: my ($target,$token,$tagstack) = @_;
614: my $currentstring = '';
615: if ($target eq 'web' || $target eq 'webgrade') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: $currentstring = '\end{center}';
619: if (&is_inside_of($tagstack, "table")) {
620: $currentstring .= ¢er_end_correction();
621: }
622: }
623: return $currentstring;
624: }
625:
626: #-- <b> tag (end tag required)
627: # NOTE: In TeX mode disables internal <p>
628: sub start_b {
629: my ($target,$token) = @_;
630: my $currentstring = '';
631: if ($target eq 'web' || $target eq 'webgrade') {
632: $currentstring = $token->[4];
633: } elsif ($target eq 'tex') {
634: &disable_para();
635: $currentstring .= '\textbf{';
636: }
637: return $currentstring;
638: }
639:
640: sub end_b {
641: my ($target,$token) = @_;
642: my $currentstring = '';
643: if ($target eq 'web' || $target eq 'webgrade') {
644: $currentstring = $token->[2];
645: } elsif ($target eq 'tex') {
646: &enable_para();
647: $currentstring = '}';
648: }
649: return $currentstring;
650: }
651:
652: #-- <strong> tag (end tag required)
653: # NOTE: in TeX mode disables internal <p>
654: sub start_strong {
655: my ($target,$token) = @_;
656: my $currentstring = '';
657: if ($target eq 'web' || $target eq 'webgrade') {
658: $currentstring = $token->[4];
659: } elsif ($target eq 'tex') {
660: &disable_para();
661: $currentstring = '\textbf{';
662: }
663: return $currentstring;
664: }
665:
666: sub end_strong {
667: my ($target,$token) = @_;
668: my $currentstring = '';
669: if ($target eq 'web' || $target eq 'webgrade') {
670: $currentstring = $token->[2];
671: } elsif ($target eq 'tex') {
672: &enable_para();
673: $currentstring = '}';
674: }
675: return $currentstring;
676: }
677:
678: #-- <h1> tag (end tag required)
679: sub start_h1 {
680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
681: my $currentstring = &end_p(); # Close off any prior para.
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring .= $token->[4];
684: } elsif ($target eq 'tex') {
685: my $pre;
686: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
687: if ($align eq 'center') {
688: $pre='\begin{center}';
689: } elsif ($align eq 'left') {
690: $pre='\rlap{';
691: } elsif ($align eq 'right') {
692: $pre=' \hfill \llap{';
693: }
694: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
695: if (not defined $TeXsize) {$TeXsize="large";}
696: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
697: } elsif ($target eq 'meta') {
698: $currentstring.='<subject>';
699: &start_output($target);
700: }
701: return $currentstring;
702: }
703:
704: sub end_h1 {
705: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
706: my $currentstring = '';
707: if ($target eq 'web' || $target eq 'webgrade') {
708: $currentstring .= $token->[2];
709: } elsif ($target eq 'tex') {
710: my $post='\vskip 0 mm ';
711: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
712: if ($align eq 'center') {
713: $post='\end{center}';
714: } elsif ($align eq 'left') {
715: $post='} \hfill'.'\vskip 0 mm ';
716: } elsif ($align eq 'right') {
717: $post='}'.'\vskip 0 mm ';
718: }
719: $currentstring .= '}}'.$post;
720: } elsif ($target eq 'meta') {
721: &end_output($target);
722: $currentstring='</subject>';
723: }
724: return $currentstring;
725: }
726:
727: #-- <h2> tag
728: sub start_h2 {
729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
730: my $currentstring = &end_p(); # Close off any prior para.
731: if ($target eq 'web' || $target eq 'webgrade') {
732: $currentstring .= $token->[4];
733: } elsif ($target eq 'tex') {
734: my $pre;
735: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
736: if ($align eq 'center') {
737: $pre='\begin{center}';
738: } elsif ($align eq 'left') {
739: $pre='\rlap{';
740: } elsif ($align eq 'right') {
741: $pre=' \hfill \llap{';
742: }
743: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
744: if (not defined $TeXsize) {$TeXsize="large";}
745: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
746: }
747: return $currentstring;
748: }
749:
750: sub end_h2 {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
752: my $currentstring = '';
753: if ($target eq 'web' || $target eq 'webgrade') {
754: $currentstring .= $token->[2];
755: } elsif ($target eq 'tex') {
756: my $post='\vskip 0 mm ';
757: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
758: if ($align eq 'center') {
759: $post='\end{center}';
760: } elsif ($align eq 'left') {
761: $post='} \hfill'.'\vskip 0 mm ';
762: } elsif ($align eq 'right') {
763: $post='}'.'\vskip 0 mm ';
764: }
765: $currentstring .= '}}'.$post;
766: }
767: return $currentstring;
768: }
769:
770: #-- <h3> tag
771: sub start_h3 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = &end_p(); # Close off any prior para.
774: if ($target eq 'web' || $target eq 'webgrade') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h3 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h4> tag
814: sub start_h4 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = &end_p(); # Close off any prior para.
817: if ($target eq 'web' || $target eq 'webgrade') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h4 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h5> tag
857: sub start_h5 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = &end_p(); # Close off any prior paras.
860: if ($target eq 'web' || $target eq 'webgrade') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h5 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #-- <h6> tag
900: sub start_h6 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior paras.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h6 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = '';
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: my $post='\vskip 0 mm ';
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $post='\end{center}';
932: } elsif ($align eq 'left') {
933: $post='} \hfill'.'\vskip 0 mm ';
934: } elsif ($align eq 'right') {
935: $post='}'.'\vskip 0 mm ';
936: }
937: $currentstring .= '}}'.$post;
938: }
939: return $currentstring;
940: }
941:
942: #--- <cite> tag (end tag required)
943: sub start_cite {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '\textit{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_cite {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web' || $target eq 'webgrade') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '}';
961: }
962: return $currentstring;
963: }
964:
965: #-- <i> tag (end tag required)
966: sub start_i {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[4];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '\textit{';
973: }
974: return $currentstring;
975: }
976:
977: sub end_i {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[2];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '}';
984: }
985: return $currentstring;
986: }
987:
988: #-- <address> tag (end tag required)
989: sub start_address {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web' || $target eq 'webgrade') {
993: $currentstring .= $token->[4];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '\textit{';
996: }
997: return $currentstring;
998: }
999:
1000: sub end_address {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[2];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '}';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <dfn> tag (end tag required)
1012: sub start_dfn {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '\textit{';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: sub end_dfn {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[2];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '}';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: #-- <tt> tag (end tag required)
1035: sub start_tt {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web' || $target eq 'webgrade') {
1039: $currentstring .= $token->[4];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '\texttt{';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: sub end_tt {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[2];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '}';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: #-- <kbd> tag (end tag required)
1058: sub start_kbd {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[4];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '\texttt{';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: sub end_kbd {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[2];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '}';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: #-- <code> tag (end tag required)
1081: sub start_code {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[4];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '\texttt{';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: sub end_code {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[2];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '}';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: #-- <em> tag (end tag required)
1104: sub start_em {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '\emph{';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_em {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[2];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '}';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: #-- <q> tag (end tag required)
1127: sub start_q {
1128: my ($target,$token) = @_;
1129: my $currentstring = '';
1130: if ($target eq 'web' || $target eq 'webgrade') {
1131: $currentstring .= $token->[4];
1132: } elsif ($target eq 'tex') {
1133: $currentstring .= '\emph{';
1134: }
1135: return $currentstring;
1136: }
1137:
1138: sub end_q {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web' || $target eq 'webgrade') {
1142: $currentstring .= $token->[2];
1143: } elsif ($target eq 'tex') {
1144: $currentstring .= '}';
1145: }
1146: return $currentstring;
1147: }
1148:
1149: # <p> is a bit strange since it does not require a closing </p>
1150: # However in latex, we must often output closing stuff to end
1151: # environments and {}'s etc. Therefore we do all the work
1152: # of figuring out the ending strings in the start tag processing,
1153: # and provide a mechanism to output the stop text external
1154: # to tag processing.
1155: #
1156: {
1157:
1158: my $closing_string = ''; # String required to close <p>
1159:
1160: # Some tags are <p> fragile meaning that <p> inside of them
1161: # does not work within TeX mode. This is managed via the
1162: # counter below:
1163: #
1164:
1165: my $para_disabled = 0;
1166:
1167: sub disable_para {
1168: $para_disabled++;
1169: }
1170: sub enable_para {
1171: $para_disabled--;
1172: }
1173:
1174:
1175: #-- <p> tag (end tag optional)
1176: #optional attribute - align="center|left|right"
1177: sub start_p {
1178: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= &end_p(); # close off prior para if in progress.
1182: $currentstring .= $token->[4];
1183: if (! ($currentstring =~ /\//)) {
1184: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1185: }
1186: } elsif ($target eq 'tex' && !$para_disabled) {
1187:
1188: $currentstring .= &end_p(); # close off prior para if in progress.
1189: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1190: if ($align eq 'center') {
1191: $currentstring .='\begin{center}\par ';
1192: $closing_string = '\end{center}';
1193: if (&is_inside_of($tagstack, "table")) {
1194: $currentstring = ¢er_correction().$currentstring;
1195: }
1196: } elsif ($align eq 'right') {
1197: $currentstring.="\n".'{\flushright ';
1198: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1199: $closing_string= "}\n";
1200: } elsif ($align eq 'left') {
1201: $currentstring.= "\n".'{\flushleft ';
1202: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1203: $closing_string = "}\n";
1204: } else {
1205: $currentstring.='\par ';
1206: if (&is_inside_of($tagstack, 'table')) {
1207: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1208: } else {
1209: $closing_string = '\strut\\\\\strut ';
1210: }
1211: }
1212:
1213: }
1214: return $currentstring;
1215: }
1216: #
1217: # End paragraph processing just requires that we output the
1218: # closing string that was saved and blank it.
1219: sub end_p {
1220: # Note only 'tex' mode uses disable_para and enable_para
1221: # so we don't need to know the target in the check below:
1222:
1223: if (!$para_disabled) {
1224: my $current_string = $closing_string;
1225: $closing_string = ''; # Not in a para anymore.
1226: return $current_string;
1227: } else {
1228: return '';
1229: }
1230:
1231: }
1232: }
1233: #-- <br> tag (end tag forbidden)
1234: sub start_br {
1235: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1236: my $currentstring = '';
1237: if ($target eq 'web' || $target eq 'webgrade') {
1238: $currentstring .= $token->[4];
1239: } elsif ($target eq 'tex') {
1240: my @tempo=@$tagstack;
1241: my $signal=0;
1242: # Not going to factor this to is_inside_of since that would require
1243: # multiple stack traversals.
1244: #
1245: for (my $i=$#tempo;$i>=0;$i--) {
1246: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1247: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1248: $signal=1;
1249: }
1250: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1251: $signal = 1;
1252: }
1253: }
1254: if ($signal != 1) {
1255: $currentstring .= '\strut \\\\ \strut ';
1256: }
1257:
1258: }
1259: return $currentstring;
1260: }
1261:
1262: sub end_br {
1263: my ($target,$token) = @_;
1264: my $currentstring = '';
1265: if ($target eq 'web' || $target eq 'webgrade') {
1266: $currentstring .= $token->[2];
1267: }
1268: return $currentstring;
1269: }
1270:
1271: #-- <big> tag (end tag required)
1272: sub start_big {
1273: my ($target,$token) = @_;
1274: my $currentstring = '';
1275: if ($target eq 'web' || $target eq 'webgrade') {
1276: $currentstring .= $token->[4];
1277: } elsif ($target eq 'tex') {
1278: $currentstring .= '{\large ';
1279: }
1280: return $currentstring;
1281: }
1282:
1283: sub end_big {
1284: my ($target,$token) = @_;
1285: my $currentstring = '';
1286: if ($target eq 'web' || $target eq 'webgrade') {
1287: $currentstring .= $token->[2];
1288: } elsif ($target eq 'tex') {
1289: $currentstring .= '}';
1290: }
1291: return $currentstring;
1292: }
1293:
1294: #-- <small> tag (end tag required)
1295: sub start_small {
1296: my ($target,$token) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web' || $target eq 'webgrade') {
1299: $currentstring .= $token->[4];
1300: } elsif ($target eq 'tex') {
1301: $currentstring .= '{\footnotesize ';
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_small {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring .= $token->[2];
1311: } elsif ($target eq 'tex') {
1312: $currentstring .= '}';
1313: }
1314: return $currentstring;
1315: }
1316:
1317: #-- <basefont> tag (end tag forbidden)
1318: sub start_basefont {
1319: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1320: my $currentstring = '';
1321: if ($target eq 'web' || $target eq 'webgrade') {
1322: $currentstring = $token->[4];
1323: } elsif ($target eq 'tex') {
1324: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1325: if (defined $basesize) {
1326: $currentstring = '{\\'.$basesize.' ';
1327: }
1328: }
1329: return $currentstring;
1330: }
1331:
1332: sub end_basefont {
1333: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1334: my $currentstring = '';
1335: if ($target eq 'web' || $target eq 'webgrade') {
1336: $currentstring = $token->[4];
1337: } elsif ($target eq 'tex') {
1338: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1339: if (defined $basesize) {
1340: $currentstring = '}';
1341: }
1342: }
1343: return $currentstring;
1344: }
1345:
1346: #-- <font> tag (end tag required)
1347: sub start_font {
1348: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1349: my $currentstring = '';
1350: if ($target eq 'web' || $target eq 'webgrade') {
1351: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1352: $currentstring = $token->[4];
1353: } elsif ($target eq 'tex') {
1354: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1355: if (defined $fontsize) {
1356: $currentstring = '{\\'.$fontsize.' ';
1357: }
1358: }
1359: return $currentstring;
1360: }
1361:
1362: sub end_font {
1363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1364: my $currentstring = '';
1365: if ($target eq 'web' || $target eq 'webgrade') {
1366: $currentstring = $token->[2];
1367: } elsif ($target eq 'tex') {
1368: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1369: if (defined $fontsize) {
1370: $currentstring = '}';
1371: }
1372: }
1373: return $currentstring;
1374: }
1375:
1376: #-- <strike> tag (end tag required)
1377: sub start_strike {
1378: my ($target,$token) = @_;
1379: my $currentstring = '';
1380: if ($target eq 'web' || $target eq 'webgrade') {
1381: $currentstring .= $token->[4];
1382: } elsif ($target eq 'tex') {
1383: &Apache::lonxml::startredirection();
1384: }
1385: return $currentstring;
1386: }
1387:
1388: sub end_strike {
1389: my ($target,$token) = @_;
1390: my $currentstring = '';
1391: if ($target eq 'web' || $target eq 'webgrade') {
1392: $currentstring .= $token->[2];
1393: } elsif ($target eq 'tex') {
1394: $currentstring=&Apache::lonxml::endredirection();
1395: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1396: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1397: $currentstring=~s/(\S)\s*$/$1\}/;
1398: }
1399: return $currentstring;
1400: }
1401:
1402: #-- <s> tag (end tag required)
1403: sub start_s {
1404: my ($target,$token) = @_;
1405: my $currentstring = '';
1406: if ($target eq 'web' || $target eq 'webgrade') {
1407: $currentstring .= $token->[4];
1408: } elsif ($target eq 'tex') {
1409: &Apache::lonxml::startredirection();
1410: }
1411: return $currentstring;
1412: }
1413:
1414: sub end_s {
1415: my ($target,$token) = @_;
1416: my $currentstring = '';
1417: if ($target eq 'web' || $target eq 'webgrade') {
1418: $currentstring .= $token->[2];
1419: } elsif ($target eq 'tex') {
1420: $currentstring=&Apache::lonxml::endredirection();
1421: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1422: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1423: $currentstring=~s/(\S)\s*$/$1\}/;
1424: }
1425: return $currentstring;
1426: }
1427:
1428: #-- <sub> tag (end tag required)
1429: sub start_sub {
1430: my ($target,$token) = @_;
1431: my $currentstring = '';
1432: if ($target eq 'web' || $target eq 'webgrade') {
1433: $currentstring .= $token->[4];
1434: } elsif ($target eq 'tex') {
1435: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1436: }
1437: return $currentstring;
1438: }
1439:
1440: sub end_sub {
1441: my ($target,$token) = @_;
1442: my $currentstring = '';
1443: if ($target eq 'web' || $target eq 'webgrade') {
1444: $currentstring .= $token->[2];
1445: } elsif ($target eq 'tex') {
1446: $currentstring .= '}}';
1447: }
1448: return $currentstring;
1449: }
1450:
1451: #-- <sup> tag (end tag required)
1452: sub start_sup {
1453: my ($target,$token) = @_;
1454: my $currentstring = '';
1455: if ($target eq 'web' || $target eq 'webgrade') {
1456: $currentstring .= $token->[4];
1457: } elsif ($target eq 'tex') {
1458: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1459: }
1460: return $currentstring;
1461: }
1462:
1463: sub end_sup {
1464: my ($target,$token) = @_;
1465: my $currentstring = '';
1466: if ($target eq 'web' || $target eq 'webgrade') {
1467: $currentstring .= $token->[2];
1468: } elsif ($target eq 'tex') {
1469: $currentstring .= '}}';
1470: }
1471: return $currentstring;
1472: }
1473:
1474: #-- <hr> tag (end tag forbidden)
1475: sub start_hr {
1476: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1477: my $currentstring = &end_p(); # End enclosing para.
1478: if ($target eq 'web' || $target eq 'webgrade') {
1479: $currentstring .= $token->[4];
1480: } elsif ($target eq 'tex') {
1481:
1482: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1483: #
1484: my $restart_sub = 0;
1485: my $restart_sup = 0;
1486:
1487: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1488: # using the start_ stop_ functions.. those tags only care about
1489: # $target.
1490:
1491: if (&is_inside_of($tagstack, "sub")) {
1492: $restart_sub = 1;
1493: $currentstring .= &end_sub($target, $token, $tagstack,
1494: $parstack, $parser, $safeeval);
1495: }
1496: if (&is_inside_of($tagstack, "sup")) {
1497: $restart_sup = 1;
1498: $currentstring .= &end_sup($target, $token, $tagstack,
1499: $parstack, $parser, $safeeval);
1500: }
1501:
1502: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1503: if (defined $LaTeXwidth) {
1504: if ($LaTeXwidth=~/^%/) {
1505: substr($LaTeXwidth,0,1)='';
1506: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1507: }
1508: } else {
1509: $LaTeXwidth ='0.9\textwidth';
1510: }
1511: my ($pre,$post);
1512: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1513: if (($align eq 'center') || (not defined $align)) {
1514: $pre=''; $post='';
1515: } elsif ($align eq 'left') {
1516: $pre='\rlap{'; $post='} \hfill';
1517: } elsif ($align eq 'right') {
1518: $pre=' \hfill \llap{'; $post='}';
1519: }
1520: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1521: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1522: # Turn stuff back on that we can't be inside of.
1523:
1524: if ($restart_sub) {
1525: $currentstring .= &start_sub($target, $token, $tagstack,
1526: $parstack, $parser, $safeeval);
1527: }
1528: if ($restart_sup) {
1529: $currentstring .= &start_sup($target, $token, $tagstack,
1530: $parstack, $parser, $safeeval);
1531: }
1532: }
1533: return $currentstring;
1534: }
1535:
1536: sub end_hr {
1537: my ($target,$token) = @_;
1538: my $currentstring = '';
1539: if ($target eq 'web' || $target eq 'webgrade') {
1540: $currentstring .= $token->[2];
1541: }
1542: return $currentstring;
1543: }
1544:
1545: #-- <div> tag (end tag required)
1546: {
1547:
1548: # Since div can be nested, the stack below is used
1549: # in 'tex' mode to store the ending strings
1550: # for the div stack.
1551:
1552: my @div_end_stack;
1553:
1554: sub start_div {
1555: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1556: my $currentstring = &end_p(); # Close enclosing para.
1557: if ($target eq 'web' || $target eq 'webgrade') {
1558: $currentstring .= $token->[4];
1559: }
1560: if ($target eq 'tex') {
1561: # 4 possible alignments: left, right, center, and -missing-.
1562: # If inside a table row, we must let the table logic
1563: # do the alignment, however.
1564: #
1565:
1566: my $endstring = '';
1567:
1568: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1569: $safeeval, undef, 1));
1570: if ($align eq 'center') {
1571: $currentstring .= '\begin{center}';
1572: $endstring = '\end{center}';
1573: if (&is_inside_of($tagstack, "table")) {
1574: $currentstring = ¢er_correction().$currentstring;
1575: $endstring .= ¢er_end_correction();
1576: }
1577: }
1578: elsif ($align eq 'right') {
1579: $currentstring .= '\begin{flushright}';
1580: $endstring .= '\end{flushright}';
1581: } elsif ($align eq 'left') {
1582: $currentstring .= '\begin{flushleft}';
1583: $endstring = '\end{flushleft}';
1584: } else {
1585:
1586: }
1587: $currentstring .= "\n"; # For human readability.
1588: $endstring = "\n$endstring\n"; # For human readability
1589: push(@div_end_stack, $endstring);
1590: }
1591: return $currentstring;
1592: }
1593:
1594: sub end_div {
1595: my ($target,$token) = @_;
1596: my $currentstring = '';
1597: if ($target eq 'web' || $target eq 'webgrade') {
1598: $currentstring .= $token->[2];
1599: }
1600: if ($target eq 'tex') {
1601: my $endstring = pop @div_end_stack;
1602: $currentstring .= $endstring;
1603: }
1604: return $currentstring;
1605: }
1606: }
1607:
1608: #-- <a> tag (end tag required)
1609: sub start_a {
1610: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1611: my $currentstring = '';
1612: if ($target eq 'web' || $target eq 'webgrade') {
1613: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1614: undef,1);
1615: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1616: if ($href =~ /\S/) {
1617: if ($href !~ m{^https?://}) {
1618: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1619: my $linkurl;
1620: if ($href =~ m{^/uploaded/}) {
1621: $linkurl = $href;
1622: } elsif ($href =~ m{^[^/]}) {
1623: my $path = $url;
1624: $path =~ s{[^/]*$}{};
1625: $linkurl = $path.$href;
1626: }
1627: if ($linkurl =~ m{^/uploaded/}) {
1628: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1629: if (&Apache::lonnet::is_on_map($url)) {
1630: &Apache::lonxml::extlink($linkurl);
1631: }
1632: }
1633: }
1634: }
1635: }
1636: }
1637: return $currentstring;
1638: }
1639:
1640: sub end_a {
1641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1642: my $currentstring = '';
1643: if ($target eq 'web' || $target eq 'webgrade') {
1644: $currentstring .= $token->[2];
1645: }
1646: if ($target eq 'tex') {
1647: my $href =
1648: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1649: my $name =
1650: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1651: my $uriprint =
1652: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1653: my $anchorprint =
1654: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1655: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1656: $href =~ s/([^\\])%/$1\\\%/g;
1657: # Substitute special symbols... and allow line breaks at each /
1658: #
1659: $href = &Apache::lonxml::latex_special_symbols($href);
1660: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1661: $currentstring .= ' ({\tt URI:'.$href.'})';
1662: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1663: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1664: } else {
1665: $currentstring.='';
1666: }
1667: }
1668: return $currentstring;
1669: }
1670:
1671: #-- <li> tag (end tag optional)
1672: sub start_li {
1673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1674: my $currentstring = '';
1675: if ($target eq 'web' || $target eq 'webgrade') {
1676: $currentstring = $token->[4];
1677: } elsif ($target eq 'tex') {
1678: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1679: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1680: #FIXME need to support types i and I
1681: if ($type=~/disc/) {
1682: $currentstring .= ' \item[$\bullet$] ';
1683: } elsif ($type=~/circle/) {
1684: $currentstring .= ' \item[$\circ$] ';
1685: } elsif ($type=~/square/) {
1686: $currentstring .= ' \item[$\diamond$] ';
1687: } elsif ($type eq '1') {
1688: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1689: } elsif ($type eq 'A') {
1690: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1691: } elsif ($type eq 'a') {
1692: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1693: } elsif ($value ne '') {
1694: $currentstring .= ' \item['.$value.'] ';
1695: } else {
1696: $currentstring .= ' \item ';
1697: }
1698: $Apache::londefdef::list_index++;
1699: }
1700: return $currentstring;
1701: }
1702:
1703: sub end_li {
1704: my ($target,$token) = @_;
1705: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1706: if ($target eq 'web' || $target eq 'webgrade') {
1707: $currentstring .= $token->[2];
1708: }
1709: return $currentstring;
1710: }
1711:
1712: #-- <u> tag (end tag required)
1713: sub start_u {
1714: my ($target,$token) = @_;
1715: my $currentstring = '';
1716: if ($target eq 'web' || $target eq 'webgrade') {
1717: $currentstring .= $token->[4];
1718: } elsif ($target eq 'tex') {
1719: &Apache::lonxml::startredirection();
1720: }
1721: return $currentstring;
1722: }
1723:
1724: sub end_u {
1725: my ($target,$token) = @_;
1726: my $currentstring = '';
1727: if ($target eq 'web' || $target eq 'webgrade') {
1728: $currentstring .= $token->[2];
1729: } elsif ($target eq 'tex') {
1730: $currentstring=&Apache::lonxml::endredirection();
1731: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1732: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1733: $currentstring=~s/(\S)\s*$/$1\}/;
1734: }
1735: return $currentstring;
1736: }
1737:
1738: #-- <ul> tag (end tag required)
1739: sub start_ul {
1740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1741: my $currentstring = &end_p(); # Close off enclosing list.
1742: if ($target eq 'web' || $target eq 'webgrade') {
1743: $currentstring .= $token->[4];
1744: } elsif ($target eq 'tex') {
1745: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1746: $Apache::londefdef::list_index=0;
1747: if ($TeXtype eq 'disc') {
1748: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1749: '\renewcommand{\labelitemii}{$\bullet$}'.
1750: '\renewcommand{\labelitemiii}{$\bullet$}'.
1751: '\renewcommand{\labelitemiv}{$\bullet$}';
1752: } elsif ($TeXtype eq 'circle') {
1753: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1754: '\renewcommand{\labelitemii}{$\circ$}'.
1755: '\renewcommand{\labelitemiii}{$\circ$}'.
1756: '\renewcommand{\labelitemiv}{$\circ$}';
1757: } elsif ($TeXtype eq 'square') {
1758: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1759: '\renewcommand{\labelitemii}{$\diamond$}'.
1760: '\renewcommand{\labelitemiii}{$\diamond$}'.
1761: '\renewcommand{\labelitemiv}{$\diamond$}';
1762: }
1763: $currentstring .= '\strut \begin{itemize}';
1764: }
1765: return $currentstring;
1766: }
1767:
1768: sub end_ul {
1769: my ($target,$token) = @_;
1770: my $currentstring = '';
1771: if ($target eq 'web' || $target eq 'webgrade') {
1772: $currentstring = $token->[2];
1773: } elsif ($target eq 'tex') {
1774: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1775: '\renewcommand{\labelitemii}{$\bullet$}'.
1776: '\renewcommand{\labelitemiii}{$\bullet$}'.
1777: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1778: }
1779: return $currentstring;
1780: }
1781:
1782: #-- <menu> tag (end tag required)
1783: sub start_menu {
1784: my ($target,$token) = @_;
1785: my $currentstring = '';
1786: if ($target eq 'web' || $target eq 'webgrade') {
1787: $currentstring = $token->[4];
1788: } elsif ($target eq 'tex') {
1789: $currentstring = " \\begin{itemize} ";
1790: }
1791: return $currentstring;
1792: }
1793:
1794: sub end_menu {
1795: my ($target,$token) = @_;
1796: my $currentstring = '';
1797: if ($target eq 'web' || $target eq 'webgrade') {
1798: $currentstring = $token->[2];
1799: } elsif ($target eq 'tex') {
1800: $currentstring = " \\end{itemize}";
1801: }
1802: return $currentstring;
1803: }
1804:
1805: #-- <dir> tag (end tag required)
1806: sub start_dir {
1807: my ($target,$token) = @_;
1808: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1809: if ($target eq 'web' || $target eq 'webgrade') {
1810: $currentstring .= $token->[4];
1811: } elsif ($target eq 'tex') {
1812: $currentstring .= " \\begin{itemize} ";
1813: }
1814: return $currentstring;
1815: }
1816:
1817: sub end_dir {
1818: my ($target,$token) = @_;
1819: my $currentstring = '';
1820: if ($target eq 'web' || $target eq 'webgrade') {
1821: $currentstring = $token->[2];
1822: } elsif ($target eq 'tex') {
1823: $currentstring = " \\end{itemize}";
1824: }
1825: return $currentstring;
1826: }
1827:
1828: #-- <ol> tag (end tag required)
1829: sub start_ol {
1830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1831: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1832: if ($target eq 'web' || $target eq 'webgrade') {
1833: $currentstring .= $token->[4];
1834: } elsif ($target eq 'tex') {
1835: $Apache::londefdef::list_index=0;
1836: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1837: if ($type eq '1') {
1838: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1839: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1840: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1841: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1842: } elsif ($type eq 'A') {
1843: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1844: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1845: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1846: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1847: } elsif ($type eq 'a') {
1848: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1849: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1850: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1851: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1852: } elsif ($type eq 'i') {
1853: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1854: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1855: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1856: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1857: } elsif ($type eq 'I') {
1858: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1859: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1860: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1861: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1862: }
1863: $currentstring .= '\strut \begin{enumerate}';
1864: }
1865: return $currentstring;
1866: }
1867:
1868: sub end_ol {
1869: my ($target,$token) = @_;
1870: my $currentstring = '';
1871: if ($target eq 'web' || $target eq 'webgrade') {
1872: $currentstring = $token->[2];
1873: } elsif ($target eq 'tex') {
1874: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1875: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1876: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1877: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1878: }
1879: return $currentstring;
1880: }
1881:
1882: #-- <dl> tag (end tag required)
1883: sub start_dl {
1884: my ($target,$token) = @_;
1885: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1886: if ($target eq 'web' || $target eq 'webgrade') {
1887: $currentstring .= $token->[4];
1888: } elsif ($target eq 'tex') {
1889: $currentstring .= '\begin{description}';
1890: $Apache::londefdef::DL++;
1891: push(@Apache::londefdef::description,[]);
1892: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1893: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1894: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1895: }
1896: return $currentstring;
1897: }
1898:
1899: sub end_dl {
1900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1901: my $currentstring = '';
1902: if ($target eq 'web' || $target eq 'webgrade') {
1903: $currentstring = $token->[2];
1904: } elsif ($target eq 'tex') {
1905: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1906: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1907: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1908: $currentstring.=' '.$element.' ';
1909: }
1910: pop(@Apache::londefdef::description);
1911: $currentstring.='\end{description}';
1912: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1913: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1914: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1915: $Apache::londefdef::DL--;
1916: }
1917: return $currentstring;
1918: }
1919:
1920: #-- <dt> tag (end tag optional)
1921: sub start_dt {
1922: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1923: my $currentstring='';
1924: if ($target eq 'web' || $target eq 'webgrade') {
1925: $currentstring = $token->[4];
1926: } elsif ($target eq 'tex') {
1927: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1928: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1929: &Apache::lonxml::startredirection();
1930: $Apache::londefdef::DT[-1]++;
1931: $Apache::londefdef::seenDT[-1]=1;
1932: }
1933: return $currentstring;
1934: }
1935:
1936: sub end_dt {
1937: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1938: my $currentstring = '';
1939: if ($target eq 'web' || $target eq 'webgrade') {
1940: $currentstring = $token->[2];
1941: } elsif ($target eq 'tex') {
1942: if ($Apache::londefdef::DT[-1]) {
1943: my $data=&item_cleanup();
1944: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1945: $Apache::londefdef::DT[-1]--;
1946: }
1947: }
1948: return $currentstring;
1949: }
1950:
1951: sub item_cleanup {
1952: my $item=&Apache::lonxml::endredirection();
1953: $item=~s/\\begin{center}//g;
1954: $item=~s/\\end{center}//g;
1955: return $item;
1956: }
1957:
1958: #-- <dd> tag (end tag optional)
1959: sub start_dd {
1960: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1961: my $currentstring = '';
1962: if ($target eq 'web' || $target eq 'webgrade') {
1963: $currentstring = $token->[4];
1964: } elsif ($target eq 'tex') {
1965: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1966: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1967: if (!$Apache::londefdef::seenDT[-1]) {
1968: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1969: }
1970: push(@{$Apache::londefdef::description[-1]},'');
1971: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1972: $Apache::londefdef::DD[-1]++;
1973: &Apache::lonxml::startredirection();
1974: }
1975: return $currentstring;
1976: }
1977:
1978: sub end_dd {
1979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1980: my $currentstring = '';
1981: if ($target eq 'web' || $target eq 'webgrade') {
1982: $currentstring = $token->[2];
1983: } elsif ($target eq 'tex') {
1984: $Apache::londefdef::description[-1]->[-1].=
1985: &Apache::lonxml::endredirection().' \vskip 0mm ';
1986: $Apache::londefdef::DD[-1]--;
1987: }
1988: return $currentstring;
1989: }
1990:
1991: #-- <table> tag (end tag required)
1992: # <table> also ends any prior <p> that is not closed.
1993: # but, unless I allow <p>'s to nest, that's the
1994: # only way I could think of to allow <p> in
1995: # <tr> <th> bodies
1996: #
1997: #list of supported attributes: border,width,TeXwidth,TeXtheme
1998: # align
1999: sub start_table {
2000: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2001: my $textwidth = '';
2002: my $currentstring = &end_p();
2003: if ($target eq 'web' || $target eq 'webgrade') {
2004: $currentstring .= $token->[4];
2005: } elsif ($target eq 'tex') {
2006: &disable_para(); # Can't have paras in a table.
2007:
2008:
2009: # New table code:
2010:
2011: # Get the parameters that we can do something about:
2012:
2013: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2014: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2015: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2016: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2017:
2018: # The only thing that needs any figuring out is the width.. and then only if it is
2019: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2020: #
2021:
2022: my $table = new Apache::lontable();
2023: if ($border ne '') {
2024: $table->table_border(1);
2025: $table->cell_border(1);
2026: }
2027: if ($theme ne '') {
2028: $table->theme($theme);
2029: }
2030: if ($align ne '') {
2031: $table->alignment($align);
2032: }
2033:
2034: # Missing width is most of page width
2035:
2036: if ($width eq "") {
2037: $width = '70%';
2038: }
2039:
2040: # If a percentage, need to calculate what this means in terms of
2041: # page width:
2042:
2043: if ($width =~ /%$/) {
2044: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2045: $width =~ s/%//;
2046: $width = $width * $textwidth / 100.0;
2047: $width .= " mm";
2048: $table->width($width);
2049: }
2050:
2051: push(@Apache::londefdef::table, $table);
2052: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2053:
2054: #--------------------------------------------------------
2055: # Old table code here.
2056: #--------------------------------------------------------
2057:
2058:
2059: if (0) {
2060: push(@Apache::londefdef::table, {});
2061: $Apache::londefdef::table[-1]{'row_number'} = -1;
2062: #maximum table's width (default coincides with text line length)
2063: if ($#Apache::londefdef::table==0) {
2064: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2065: $textwidth=~/(\d+\.?\d*)/;
2066: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2067: } else {
2068: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2069: #the maximum width of nested table is determined by LATeX width of parent cell
2070: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2071: } else {
2072: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2073: $textwidth=$Apache::londefdef::table[-2]{'width'};
2074: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2075: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2076: }
2077: }
2078: }
2079:
2080: # width either comes forced from the TeXwidth or the width parameters.
2081: # in either case it can be a percentage or absolute width.
2082: # in the width case we ignore absolute width
2083: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2084: if (!defined($TeXwidth)) {
2085: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2086: $safeeval,undef,1);
2087: if ($htmlwidth =~ /%/) {
2088: $TeXwidth = $htmlwidth;
2089: } else {
2090: $TeXwidth = $textwidth;
2091: }
2092: }
2093: # if the width is specified as a % it is converted to an absolute width.
2094: # otherwise.. just plugged right in the hash
2095:
2096: if ($TeXwidth=~/%/) {
2097: $TeXwidth=~/(\d+)/;
2098: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2099: } else {
2100: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2101: }
2102: # In the end, however the table width cannot be wider than $textwidth...
2103:
2104: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2105: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2106: }
2107: #table's border
2108: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2109: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2110: unless (defined $border) { $border = 0; }
2111: if ($border) {
2112: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2113: $Apache::londefdef::table[-1]{'vinc'} = '&';
2114: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2115: } else {
2116: $Apache::londefdef::table[-1]{'hinc'} = '';
2117: $Apache::londefdef::table[-1]{'vinc'} = '&';
2118: $Apache::londefdef::table[-1]{'vvinc'} = '';
2119: }
2120: if ($#Apache::londefdef::table==0) {
2121: # Note that \newline seems to destroy the alignment envs.
2122: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2123: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2124: }
2125: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2126: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2127: $Apache::londefdef::table[-1]{'objectlen'}=[];
2128: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2129: $Apache::londefdef::table[-1]{'maxlen'}=[];
2130: $Apache::londefdef::table[-1]{'minlen'}=[];
2131: $Apache::londefdef::table[-1]{'content'}=[];
2132: $Apache::londefdef::table[-1]{'align'}=[];
2133: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2134: }
2135:
2136: }
2137: return $currentstring;
2138: }
2139:
2140: sub end_table {
2141: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2142: my $currentstring = '';
2143: if ($target eq 'web' || $target eq 'webgrade') {
2144: $currentstring = $token->[2];
2145: } elsif ($target eq 'tex') {
2146:
2147:
2148: # New table code:
2149:
2150: my $table = pop(@Apache::londefdef::table);
2151: my $t = $table->generate();
2152: $currentstring = $t->generate_string();
2153: &enable_para();
2154: #--------------------------------------------------------------
2155: # Old table code:
2156: #--------------------------------------------------------------
2157:
2158: if (0) {
2159:
2160: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2161: my $inmemory = '';
2162: my $output = '';
2163: my $WARNING='';
2164: #width of columns from TeXwidth attributes
2165:
2166: # Protect against unbalanced </table> tag.
2167:
2168: if (scalar(@Apache::londefdef::table) > 0) {
2169:
2170: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2171: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2172: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2173: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2174: }
2175: }
2176: }
2177: #free space and number of empty columns
2178: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2179: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2180: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2181: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2182: $empty_columns++;
2183: } else {
2184: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2185: }
2186: }
2187:
2188: #boundaries for contents columns
2189: my @min_len=();#columns can not be narrower
2190: my @max_len=();#maximum length of column
2191: my $avg_max;
2192: my $avg_min;
2193: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2194: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2195: my ($localmin,$localmax)=(0,0);
2196: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2197: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2198: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2199: }
2200: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2201: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2202: }
2203: }
2204: push @min_len, $localmin;
2205: push @max_len, $localmax;
2206: $avg_max = $localmax + $avg_max;
2207: $avg_min = $localmin + $avg_min;
2208: }
2209: # Does not really matter what the average max/min are if there are no cols.
2210: # and this prevents div 0 in that case.
2211:
2212: if ($counter_cols != 0) {
2213: $avg_max = $avg_max/$counter_cols;
2214: $avg_min = $avg_min/$counter_cols;
2215: }
2216:
2217:
2218: # I don't think the below is needed.. but just in case:
2219:
2220: if ($avg_min > $avg_max) {
2221: my $temp = $avg_min;
2222: $avg_min = $avg_max;
2223: $avg_max = $temp;
2224: }
2225:
2226:
2227: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2228: my $localmin=0,;
2229: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2230: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2231: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2232: }
2233: }
2234: if ($max_len[$jn]<$localmin) {
2235: $max_len[$jn]=$localmin;
2236: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2237: }#object size is bigger
2238: if ($min_len[$jn]<$localmin) {
2239: $min_len[$jn]=$localmin;
2240: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2241: }#object size is bigger
2242: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2243: $min_len[$jn]=0;
2244: $max_len[$jn]=0;
2245: }
2246: # Spans seem to be really bothered by max/min = 0. So if we have one
2247: # make it an average joe max/min.
2248:
2249: if ($max_len[$jn] == 0) {
2250: $max_len[$jn] = $avg_max;
2251: }
2252: if ($min_len[$jn] == 0) {
2253: $min_len[$jn] = $avg_min;
2254: }
2255:
2256: }
2257: #final adjustment of column width
2258: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2259: my @adjust=();
2260: #step 1. adjustment by maximum value
2261: my $space_needed=0;
2262: for (my $jn=0;$jn<=$#max_len;$jn++) {
2263: $space_needed=$space_needed+$max_len[$jn];
2264: }
2265: if ($space_needed<=$available_space) {
2266:
2267: for (my $jn=0;$jn<=$#max_len;$jn++) {
2268: if ($fwidth[$jn]==0) {
2269: $fwidth[$jn]=$max_len[$jn];
2270: }
2271: }
2272: } else {
2273: #step 2. adjustment by minimum value (estimation)
2274: $space_needed=0;
2275: for (my $jn=0;$jn<=$#min_len;$jn++) {
2276: $space_needed+=$min_len[$jn];
2277: }
2278: if ($space_needed>$available_space) {
2279: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2280: for (my $jn=0;$jn<=$#max_len;$jn++) {
2281: if ($fwidth[$jn]==0) {
2282: $fwidth[$jn]=$min_len[$jn];
2283: }
2284: }
2285: #check if we have objects which can be scaled
2286: my $how_many_to_scale=0;
2287: my @to_scale=();
2288: for (my $jn=0;$jn<=$#max_len;$jn++) {
2289: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2290: $how_many_to_scale++;
2291: push @to_scale, $jn;
2292: }
2293: }
2294: if ($how_many_to_scale>0) {
2295: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2296: foreach my $jn (@to_scale) {
2297: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2298: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2299: if ($1 ne '') {
2300: my $current_length=&recalc($1);
2301: $current_length=~/(\d+\.?\d*)/;
2302: $current_length=$current_length-$space_to_adjust;
2303: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2304: }
2305: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2306: if ($1 ne '') {
2307: my $current_length=$1;
2308: $current_length=$current_length-$space_to_adjust;
2309: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2310: }
2311: }
2312: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2313: }
2314: }
2315: } else {
2316: #step 3. adjustment over minimal + corrections
2317: my $enlarge_coef=$available_space/$space_needed;
2318: my $acsessive=0;
2319: for (my $jn=0;$jn<=$#min_len;$jn++) {
2320: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2321: if ($adjust[$jn]>$max_len[$jn]) {
2322: $fwidth[$jn]=$max_len[$jn];
2323: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2324: $adjust[$jn]=0;
2325:
2326: }
2327: }
2328: if ($acsessive>0) {
2329: #we have an excess of space and can redistribute it
2330: my $notempty_columns=0;
2331: for (my $jn=0;$jn<=$#min_len;$jn++) {
2332: if ($adjust[$jn]!=0) {
2333: $notempty_columns++;
2334: }
2335: }
2336: my $per_column=$acsessive/$notempty_columns;
2337: for (my $jn=0;$jn<=$#min_len;$jn++) {
2338: if ($adjust[$jn]!=0) {
2339: $adjust[$jn]+=$per_column;
2340: $fwidth[$jn]=$adjust[$jn];
2341: }
2342: }
2343: } else {
2344: for (my $jn=0;$jn<=$#min_len;$jn++) {
2345: $fwidth[$jn]=$adjust[$jn];
2346: }
2347: }
2348: }
2349: }
2350: # use all available width or specified width as if not specified,
2351: # the specified width gets defaulted to the available width.
2352:
2353: my $current=0;
2354: for (my $i=0;$i<=$#fwidth;$i++) {
2355: $current+=$fwidth[$i];
2356: }
2357: if ($current == 0) {
2358: $current = $Apache::londefdef::table[-1]{'width'};
2359: }
2360: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2361: for (my $i=0;$i<=$#fwidth;$i++) {
2362: $fwidth[$i]*=$coef;
2363: }
2364: #removing of empty columns if allowed
2365: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2366: if ($permission eq 'yes') {
2367: my @cleaned_table=();
2368: my @cleaned_header=();
2369: my $colind=0;
2370: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2371: if ($fwidth[$jn]!=0) {
2372: #we need to copy column
2373: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2374: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2375: $cleaned_header[$colind]=$fwidth[$jn];
2376: }
2377: $colind++;
2378: }
2379: }
2380: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2381: @fwidth=@cleaned_header;
2382: }
2383:
2384:
2385: #construct header of the table
2386: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2387: for (my $in=0;$in<=$#fwidth;$in++) {
2388: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2389: }
2390: $header_of_table .= '}';
2391:
2392: #fill the table
2393: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2394: my $have_rowspan = 0;
2395: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2396:
2397: #-----------------------------------------------------------
2398: # I think this order of doing things will ensure that
2399: # single rowspan, columspan and combined row/colspans will
2400: # work correctly. LaTeX is delicate here.
2401: # RF.
2402:
2403: # Start a rowspan if necessary:
2404:
2405: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2406: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2407: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2408: #
2409: # Do the appropriate magic if this has a colspan
2410: #
2411:
2412: my $border_char = "";
2413: if ($border) {
2414: $border_char = "|";
2415: }
2416: my $spanwidth = 0;
2417: if ($colspan > 1) {
2418: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2419: $spanwidth += $fwidth[$spancol];
2420: }
2421: $output .= '\multicolumn{'.
2422: $colspan
2423: ."}";
2424: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2425: $output .= '{'.$border_char.'c'.$border_char.'}{';
2426: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2427: $output .= '{'.$border_char.'r'.$border_char.'}{';
2428: }
2429: else {
2430: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2431: }
2432:
2433: } else {
2434: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2435: }
2436:
2437: # Rowspan... if colspan is 1, and there's an alignment we'll need
2438: # to kick in a multicolumn in order to get the alignment spec.
2439: # this must precede the multirow or LaTex gets quite upset.
2440: # Naturally if colspan > 1 we've already done that above ^
2441: #
2442: my $multirow_aligned = 0;
2443: if ($rowspan > 1) {
2444: if ($colspan == 1) {
2445: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2446: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2447: $multirow_aligned = 1;
2448: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2449: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2450: $multirow_aligned = 1;
2451: }
2452: }
2453: $have_rowspan++;
2454: if ($multirow_aligned) {
2455: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2456: } else {
2457: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2458: }
2459:
2460: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2461: s{^\s*\\par\s*}{};
2462: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2463: s{\s*\\vskip\s*0pt\s*$}{};
2464:
2465: #
2466: # If we did not throw in a multicolumn to align, then add
2467: # an extra {
2468: # so we close correctly without having to keep additional state
2469: # around
2470: #
2471: if (!$multirow_aligned) {
2472: $output .= '{';
2473: }
2474: }
2475: if (($rowspan eq '^') || ($rowspan eq '_')) {
2476: $have_rowspan++;
2477: }
2478: #--------------------------------------------------------------
2479:
2480:
2481: # For right and center alignment of single cells.
2482: # we are going to use a multicolumn with a span of 1 to specify alignment.
2483: #
2484: if ($colspan == 1 && $rowspan == 1) {
2485: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2486: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2487: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2488: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2489: }
2490: }
2491:
2492: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2493:
2494: if (($colspan == 1 && $rowspan == 1) &&
2495: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2496: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2497: $output .= '}';
2498: }
2499:
2500: # Close off any open multirow:
2501:
2502: if ($rowspan > 1) {
2503: $output .= '}}';
2504: }
2505: # Close off the colspan...
2506: #
2507: if ($colspan > 1) {
2508: $output .= '}';
2509: $jn += $colspan-1; # Adjust for number of rows really left.
2510: }
2511: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2512: }
2513: # If have_rowspan > 0, and borders are on, then
2514: # we need to do more than put an \hline at the bottom of row.
2515: # we need to do the appropriate \cline to ensure that
2516: # the spanned rows don't have \hlines through them.
2517:
2518: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2519: $output .= ' \\\\ ';
2520: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2521: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2522: if ($rowspan ne "^") {
2523: if (($rowspan <= 1) || ($rowspan eq '_')) {
2524: my $column = $jn+1;
2525: $output .= '\cline{'.$column.'-'.$column.'} ';
2526: }
2527: }
2528: }
2529:
2530: } else {
2531: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2532: }
2533: }
2534: # Note that \newline destroys alignment env's produced by e.g. <div>
2535: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2536: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2537: if ($#Apache::londefdef::table > 0) {
2538: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2539: # Figure out max/and min width by summing us and then
2540: # apply that to the current column of the table we nest in
2541: # if it's larger than the current width or the current width
2542: # is undefined.
2543: #
2544: my $min_nested_width = 0;
2545: my $max_nested_width = 0;
2546: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2547: $min_nested_width += $min_len[$col];
2548: $max_nested_width += $max_len[$col];
2549:
2550: }
2551: # Fudge in an extra 5 mm for borders etc:
2552:
2553: $min_nested_width += 5;
2554: $max_nested_width += 5;
2555:
2556: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2557: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2558: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2559: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2560: }
2561: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2562: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2563: }
2564:
2565: pop @Apache::londefdef::table;
2566: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2567: } else {
2568: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2569: pop @Apache::londefdef::table;
2570: undef @Apache::londefdef::table;
2571: }
2572: }
2573: &enable_para();
2574: }
2575: }
2576: return $currentstring;
2577: }
2578:
2579: #-- <tr> tag (end tag optional)
2580: sub start_tr {
2581: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2582: my $currentstring = '';
2583: if ($target eq 'web' || $target eq 'webgrade') {
2584: $currentstring = $token->[4];
2585: } elsif ($target eq 'tex') {
2586:
2587: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2588: $Apache::londefdef::table[-1]->start_row();
2589:
2590: if ($align ne '') {
2591: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2592: }
2593:
2594: #---------------------------------------------------------------
2595: # Old table code.
2596: #---------------------------------------------------------------
2597:
2598: if (0) {
2599: $Apache::londefdef::table[-1]{'row_number'}++;
2600: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2601: if ($alignchar ne '') {
2602: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2603: } else {
2604: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2605: }
2606: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2607: #
2608: # Need to save the number of table columns to preserve the max # columns.
2609: #
2610: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2611: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2612: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2613: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2614: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2615: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2616: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2617: }
2618: }
2619: return $currentstring;
2620: }
2621:
2622: sub end_tr {
2623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2624: my $currentstring = &end_p(); # Close any pending <p> in the row.
2625: if ($target eq 'web' || $target eq 'webgrade') {
2626: $currentstring .= $token->[2];
2627: } elsif ($target eq 'tex') {
2628:
2629: # In case the user is missing a </td> or </th> tag:
2630:
2631: if ($Apache::londefdef::TD_redirection) {
2632: &end_td_tex($parstack,$parser,$safeeval);
2633: }
2634: $Apache::londefdef::table[-1]->end_row();
2635:
2636: #-----------------------------------------------
2637: # Old table code
2638: #-----------------------------------------------
2639:
2640: if (0) {
2641: if ($Apache::londefdef::TD_redirection) {
2642: &end_td_tex($parstack,$parser,$safeeval);
2643: }
2644: # Counter columns must be the maximum number of columns seen
2645: # in the table so far so:
2646: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2647: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2648: }
2649: }
2650:
2651:
2652: }
2653: return $currentstring;
2654: }
2655:
2656: #-- <td> tag (end tag optional)
2657: sub start_td {
2658: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2659: my $currentstring = '';
2660: if ($target eq 'web' || $target eq 'webgrade') {
2661: $currentstring = $token->[4];
2662: } elsif ($target eq 'tex') {
2663: $Apache::londefdef::TD_redirection = 1;
2664: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2665: }
2666: return $currentstring;
2667: }
2668:
2669: sub tag_check {
2670: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2671: my @ar=@$parstack;
2672: for (my $i=$#ar-1;$i>=0;$i--) {
2673: if (lc($$tagstack[$i]) eq $good_tag) {
2674: &start_td_tex($parstack,$parser,$safeeval);
2675: last;
2676: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2677: splice @ar, $i+1;
2678: &end_td_tex(\@ar,$parser,$safeeval);
2679: &start_td_tex($parstack,$parser,$safeeval);
2680: last;
2681: }
2682: }
2683: return '';
2684: }
2685:
2686: #
2687: # Factor out cell configuration hash generation:
2688: #
2689:
2690: sub cell_config_hash {
2691: my ($align, $rowspan, $colspan) = @_;
2692: my %config;
2693: if ($align ne '') {
2694: $config{'halign'} = $align;
2695: }
2696: if ($colspan ne "") {
2697: $config{'colspan'} = $colspan;
2698: }
2699: if ($rowspan ne '') {
2700: $config{'rowspan'} = $rowspan;
2701: }
2702: return \%config;
2703: }
2704:
2705: sub start_td_tex {
2706: my ($parstack,$parser,$safeeval) = @_;
2707:
2708: # At this stage, an empty cell is created with the
2709: # appropriate rowspan/colspan and alignment
2710: # attributes, but empty of text. end_td_tex will
2711: # fetch the contents from the recursive parse and
2712: # fill the cell with them:
2713: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2714: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2715: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2716:
2717: my $config = &cell_config_hash($align, $rowspan, $colspan);
2718:
2719: my $table = $Apache::londefdef::table[-1];
2720: $table->add_cell('', $config);
2721:
2722:
2723: #------------------------------------------------
2724: # Old table code.
2725: #------------------------------------------------
2726:
2727: if (0) {
2728:
2729: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2730: if ($alignchar eq '') {
2731: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2732: }
2733: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2734: $Apache::londefdef::table[-1]{'counter_columns'}++;
2735: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2736: if (defined $TeXwidth) {
2737: my $current_length=&recalc($TeXwidth);
2738: $current_length=~/(\d+\.?\d*)/;
2739: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2740: }
2741: }
2742: &Apache::lonxml::startredirection();
2743: return '';
2744: }
2745:
2746: sub end_td_tex {
2747:
2748: my $text = &Apache::lonxml::endredirection();
2749: my $table = $Apache::londefdef::table[-1];
2750: $table->append_cell_text($text);
2751:
2752: #-------------------------------------------------
2753: # Old table code
2754: #-------------------------------------------------
2755:
2756: if (0) {
2757: my ($parstack,$parser,$safeeval) = @_;
2758: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2759: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2760: my $data = &Apache::lonxml::endredirection();
2761:
2762: # The rowspan array of the table indicates which cells are part of a span.
2763: # n indicates the start of a span set of n rows.
2764: # ^ indicates a cell that continues a span set.
2765: # _ indicates the cell is at the bottom of a span set.
2766: # If this and subsequent cells are part of a rowspan, we must
2767: # push along the row until we find one that is not.
2768:
2769: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2770: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2771: # Part of a span.
2772: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2773: $current_column++;
2774: }
2775: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2776:
2777:
2778: # Get the column and row spans.
2779: # Colspan can be done via \multicolumn if I can figure out the data structs.
2780:
2781: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2782: if (!$colspan) {
2783: $colspan = 1;
2784: }
2785:
2786: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2787: if (!$rowspan) {
2788: $rowspan = 1;
2789: }
2790:
2791:
2792:
2793: for (my $c = 0; $c < $colspan; $c++) {
2794: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2795: for (my $i = 1; $i < $rowspan; $i++) {
2796: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2797: if ($i == ($rowspan-1)) {
2798: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2799: }
2800: }
2801: }
2802:
2803: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2804: if (defined $TeXwidth) {
2805: for (my $c = 0; $c < $colspan; $c++) {
2806: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2807: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2808: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2809: }
2810: } else {
2811: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2812: my $garbage_data=$data;
2813: my $fwidth=0;
2814: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2815: my $current_length=&recalc($1);
2816: $current_length=~/(\d+\.?\d*)/;
2817: if ($fwidth<$1) {$fwidth=$1;}
2818: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2819: }
2820: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2821: my $current_length=$1;
2822: if ($fwidth<$current_length) {$fwidth=$current_length;}
2823: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2824: }
2825: for (my $c = 0; $c < $colspan; $c++) {
2826: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2827: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2828: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2829: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2830: }
2831: } 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)*/) {
2832: my $garbage_data=$data;
2833: my $fwidth=0;
2834: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2835: my $current_length=&recalc($1);
2836: $current_length=~/(\d+\.?\d*)/;
2837: if ($fwidth<$1) {$fwidth=$1;}
2838: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2839: }
2840: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2841: my $current_length=&recalc($1);
2842: $current_length=~/(\d+\.?\d*)/;
2843: if ($fwidth<$1) {$fwidth=$1;}
2844: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2845: }
2846: for (my $c = 0; $c < $colspan; $c++) {
2847: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2848: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2849: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2850: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2851: }
2852: $data=~s/\\\\\s*$//;
2853: } else {
2854: $data=~s/^\s+(\S.*)/$1/;
2855: $data=~s/(.*\S)\s+$/$1/;
2856: $data=~s/(\s)+/$1/;
2857: my ($current_length,$min_length)=(0,0);
2858: if ($data=~/\\vskip/) {
2859: my $newdata=$data;
2860: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2861: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2862: foreach my $elementdata (@newdata) {
2863: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2864: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2865: my @words=split(/ /,$elementdata);
2866: foreach my $word (@words) {
2867: my $lengthword=2.5*&LATEX_length($word);
2868: if ($min_length<$lengthword) {$min_length=$lengthword;}
2869: }
2870: }
2871: } else {
2872: $current_length=2.5*&LATEX_length($data);
2873: my @words=split(/ /,$data);
2874: foreach my $word (@words) {
2875: my $lengthword=2*&LATEX_length($word);
2876: if ($min_length<$lengthword) {$min_length=$lengthword;}
2877: }
2878: }
2879: for (my $c = 0; $c < $colspan; $c++) {
2880: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2881: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2882: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2883: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2884: }
2885: }
2886: }
2887: # Substitute all of the tables nested in this cell in their appropriate places.
2888:
2889:
2890: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2891: for (my $in=0; $in<=$nested_count; $in++) {
2892: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2893: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2894: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2895: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2896:
2897: }
2898: # Should be be killing off the 'include' elements as they're used up?
2899:
2900: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2901:
2902:
2903:
2904:
2905: # the colspan array will indicate how many columns will be spanned by this
2906: # cell..this requires that counter_columns also be adjusted accordingly
2907: # so that the next bunch of text goes in the right cell. Note that since
2908: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2909: #
2910:
2911: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2912: for (my $i = 0; $i < ($colspan -1); $i++) {
2913: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2914: }
2915: for (my $r = 0; $r < $rowspan; $r++) {
2916: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2917: # Put empty text in spanned cols.
2918:
2919: }
2920:
2921: }
2922:
2923: return '';
2924: }
2925:
2926: sub end_td {
2927: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2928: my $currentstring = '';
2929: if ($target eq 'web' || $target eq 'webgrade') {
2930: $currentstring = $token->[2];
2931: } elsif ($target eq 'tex') {
2932: $Apache::londefdef::TD_redirection =0;
2933: &end_td_tex($parstack,$parser,$safeeval);
2934: }
2935: return $currentstring;
2936: }
2937:
2938: #-- <th> tag (end tag optional)
2939: sub start_th {
2940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2941: my $currentstring = '';
2942: if ($target eq 'web' || $target eq 'webgrade') {
2943: $currentstring = $token->[4];
2944: } elsif ($target eq 'tex') {
2945: $Apache::londefdef::TD_redirection = 1;
2946: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2947: }
2948: return $currentstring;
2949: }
2950:
2951: sub tagg_check {
2952: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2953: my @ar=@$parstack;
2954: for (my $i=$#ar-1;$i>=0;$i--) {
2955: if (lc($$tagstack[$i]) eq $good_tag) {
2956: &start_th_tex($parstack,$parser,$safeeval);
2957: last;
2958: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2959: splice @ar, $i+1;
2960: &end_th_tex(\@ar,$parser,$safeeval);
2961: &start_th_tex($parstack,$parser,$safeeval);
2962: last;
2963: }
2964: }
2965: return '';
2966: }
2967:
2968: sub start_th_tex {
2969: my ($parstack,$parser,$safeeval) = @_;
2970:
2971: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2972: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2973: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2974:
2975: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2976: my $table = $Apache::londefdef::table[-1];
2977: $table->add_cell('\textbf{', $config);
2978:
2979: #-------------------------------------------------------------------------------------
2980: #
2981: # Old table code.
2982: #
2983: #--------------------------------------------------------------------------------------
2984:
2985: if (0) {
2986:
2987:
2988: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2989: if ($alignchar eq '') {
2990: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2991: }
2992: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2993: $Apache::londefdef::table[-1]{'counter_columns'}++;
2994: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2995: if (defined $TeXwidth) {
2996: my $current_length=&recalc($TeXwidth);
2997: $current_length=~/(\d+\.?\d*)/;
2998: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2999: }
3000: }
3001:
3002: # Accept xml until the </th> tag.
3003:
3004: &Apache::lonxml::startredirection();
3005: return '';
3006: }
3007:
3008: sub end_th_tex {
3009: my ($parstack,$parser,$safeeval) = @_;
3010:
3011: my $table = $Apache::londefdef::table[-1];
3012: my $text = &Apache::lonxml::endredirection();
3013: $table->append_cell_text($text.'}');
3014:
3015: #-----------------------------------------------------------------------------
3016: # Old table code:
3017: #-----------------------------------------------------------------------------
3018:
3019: if (0) {
3020: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3021: my $data=&Apache::lonxml::endredirection();
3022: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3023: if (defined $TeXwidth) {
3024: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3025: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3026: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3027: } else {
3028: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3029: my $garbage_data=$data;
3030: my $fwidth=0;
3031: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3032: my $current_length=&recalc($1);
3033: $current_length=~/(\d+\.?\d*)/;
3034: if ($fwidth<$1) {$fwidth=$1;}
3035: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3036: }
3037: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3038: my $current_length=$1;
3039: if ($fwidth<$current_length) {$fwidth=$current_length;}
3040: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3041: }
3042: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3043: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3044: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3045: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3046: } else {
3047: $data=~s/^\s+(\S.*)/$1/;
3048: $data=~s/(.*\S)\s+$/$1/;
3049: $data=~s/(\s)+/$1/;
3050: my ($current_length,$min_length)=(0,0);
3051: if ($data=~/\\vskip/) {
3052: my $newdata=$data;
3053: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3054: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3055: foreach my $elementdata (@newdata) {
3056: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3057: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3058: my @words=split(/ /,$elementdata);
3059: foreach my $word (@words) {
3060: my $lengthword=2.5*&LATEX_length($word);
3061: if ($min_length<$lengthword) {$min_length=$lengthword;}
3062: }
3063: }
3064: } else {
3065: $current_length=2.5*&LATEX_length($data);
3066: my @words=split(/ /,$data);
3067: foreach my $word (@words) {
3068: my $lengthword=2*&LATEX_length($word);
3069: if ($min_length<$lengthword) {$min_length=$lengthword;}
3070: }
3071: }
3072: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3073: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3074: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3075: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3076: }
3077: }
3078: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3079: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3080: }
3081: #make data bold
3082: $data='\textbf{'.$data.'}';
3083: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3084: }
3085: return'';
3086: }
3087:
3088: sub end_th {
3089: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3090: my $currentstring = &end_p(); # Close any open <p> in the row.
3091: if ($target eq 'web' || $target eq 'webgrade') {
3092: $currentstring .= $token->[2];
3093: } elsif ($target eq 'tex') {
3094: $Apache::londefdef::TD_redirection =0;
3095: &end_th_tex($parstack,$parser,$safeeval);
3096: }
3097: return $currentstring;
3098: }
3099:
3100: #-- <img> tag (end tag forbidden)
3101: #
3102: # Render the <IMG> tag.
3103: # <IMG> has the following attributes (in addition to the
3104: # standard HTML ones:
3105: # TeXwrap - Governs how the tex target will try to wrap text around
3106: # horizontally aligned images.
3107: # TeXwidth - The width of the image when rendered for print (mm).
3108: # TeXheight - The height of the image when rendered for print (mm)
3109: # (Note there seems to also be support for this as a % of page size)
3110: #
3111: sub start_img {
3112: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3113: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3114: undef,1);
3115: if (! $src &&
3116: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3117: ) {
3118: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3119: return '';
3120: }
3121: &Apache::lonxml::extlink($src);
3122: my $currentstring = '';
3123: my $scaling = .3;
3124:
3125: # Render unto browsers that which are the browser's...
3126:
3127: if ($target eq 'web' || $target eq 'webgrade') {
3128: if ($env{'browser.imagesuppress'} ne 'on') {
3129: my $enc = ('yes' eq
3130: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3131: $safeeval)));
3132: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3133: $enc);
3134: } else {
3135: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3136: undef,1);
3137: if (!$alttag) {
3138: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3139: $src);
3140: }
3141: $currentstring.='[IMAGE: '.$alttag.']';
3142: }
3143:
3144: # and render unto TeX that which is LaTeX
3145:
3146: } elsif ($target eq 'tex') {
3147: #
3148: # The alignment will require some superstructure to be put around
3149: # the \includegraphics stuff. At present we can only partially
3150: # simulate the alignments offered by html.
3151: #
3152: #
3153: my $align = lc(&Apache::lonxml::get_param('align',
3154: $parstack,
3155: $safeeval,
3156: undef,1));
3157: if(!$align) {
3158: $align = "bottom"; # This is html's default so it's ours too.
3159: }
3160: #
3161: &Apache::lonxml::debug("Alignemnt = $align");
3162: # LaTeX's image/text wrapping is really bad since it wants to
3163: # make figures float.
3164: # The user has the optional parameter (applicable only to l/r
3165: # alignment to use the picins/parpic directive to get wrapped text
3166: # this is also imperfect.. that's why we give them a choice...
3167: # so they can't yell at us for our choice.
3168: #
3169: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3170: $parstack,
3171: $safeeval,
3172: undef,0);
3173: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3174: if(!$latex_rendering) {
3175: $latex_rendering = "texwrap";
3176: }
3177: # using texwrap inside a table does not work. So, if after all of this,
3178: # texwrap is on, we turn it off if we detect we're in a table:
3179: #
3180: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3181: $latex_rendering = 'parpic';
3182: }
3183:
3184: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3185:
3186: #if original bmp/gif/jpg/png file exist do following:
3187: my $origsrc=$src;
3188: my ($path,$file) = &get_eps_image($src);
3189: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3190: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3191: &Apache::lonxml::debug("path = $path file = $file src = $src");
3192: if (-e $src) {
3193: &Apache::lonxml::debug("$src exists");
3194: my ($height_param,$width_param)=
3195: &image_size($origsrc,0.3,$parstack,$safeeval);
3196: my $size;
3197: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3198: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3199: # Default size if not able to extract that (e.g. eps image).
3200:
3201: # &Apache::lonnet::logthis("Size = $size");
3202:
3203: $size='['.$size;
3204: $size=~s/,$/]/;
3205: $currentstring .= '\graphicspath{{'.$path.'}}'
3206: .'\includegraphics'.$size.'{'.$file.'} ';
3207: my $closure;
3208: ($currentstring, $closure) = &align_latex_image($align,
3209: $latex_rendering,
3210: $currentstring,
3211: $width_param,
3212: $height_param);
3213: $currentstring .= $closure;
3214:
3215: } else {
3216: &Apache::lonxml::debug("$src does not exist");
3217: #original image file doesn't exist so check the alt attribute
3218: my $alt =
3219: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3220: unless ($alt) {
3221: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3222: }
3223:
3224: if ($alt) { $currentstring .= ' '.$alt.' '; }
3225: }
3226:
3227: # And here's where the semi-quote breaks down: allow the user
3228: # to edit the beast as well by rendering the problem for edit:
3229: } elsif ($target eq 'edit') {
3230: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3231: $currentstring .=&Apache::edit::tag_start($target,$token);
3232: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3233: &Apache::edit::browse('src',undef,'alt',$only).' '.
3234: &Apache::edit::search('src',undef,'alt').'<br />';
3235: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3236: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3237: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3238: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3239: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3240: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3241: ['','bottom','middle','top','left','right'],$token,5);
3242: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3243: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3244: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3245: ['no','yes'], $token, 2);
3246: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3247: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3248: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3249: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3250: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3251:
3252: if ($token->[2]{'src'}=~/\$/) {
3253: $currentstring.='Variable image source';
3254: } else {
3255: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3256: if ($width) { $currentstring.=' width="'.$width.'" '; }
3257: if ($height) { $currentstring.=' height="'.$height.'" '; }
3258: $currentstring .= ' />';
3259: }
3260: } elsif ($target eq 'modified') {
3261: my ($osrc,$owidth,$oheight)=
3262: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3263: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3264: $safeeval,'src','alt','align',
3265: 'TeXwidth','TeXheight', 'TeXwrap',
3266: 'width','height','encrypturl');
3267: my ($nsrc,$nwidth,$nheight)=
3268: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3269: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3270: &image_replication($loc);
3271: my ($iwidth,$iheight);
3272: if (-e $loc) {
3273: my $image = Image::Magick->new;
3274: $image->Read($loc);
3275: ($iwidth, $iheight) = ($image->Get('width'),
3276: $image->Get('height'));
3277: }
3278: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3279: # changed image or no size specified,
3280: # if they didn't explicitly change the
3281: # width or height use the ones from the image
3282: if ($iwidth && $iheight) {
3283: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3284: $token->[2]{'width'} = $iwidth;$ctag=1;
3285: }
3286: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3287: $token->[2]{'height'}=$iheight;$ctag=1;
3288: }
3289: }
3290: }
3291: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3292: # if we don't have a width or height
3293: if ($iwidth && $cwidth && !$cheight) {
3294: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3295: }
3296: if ($iheight && $cheight && !$cwidth) {
3297: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3298: }
3299: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3300: }
3301:
3302: return $currentstring;
3303: }
3304:
3305: sub end_img {
3306: my ($target,$token) = @_;
3307: my $currentstring = '';
3308: if ($target eq 'web' || $target eq 'webgrade') {
3309: $currentstring = $token->[2];
3310: } elsif ($target eq 'tex') {
3311: $currentstring = '';
3312: }
3313: return $currentstring;
3314: }
3315:
3316: #-- <applet> tag (end tag required)
3317: sub start_applet {
3318: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3319:
3320: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3321: &Apache::lonxml::extlink($code);
3322: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3323: undef,1);
3324: &Apache::lonxml::extlink($archive);
3325: my $currentstring = '';
3326: if ($target eq 'web' || $target eq 'webgrade') {
3327: if ($env{'browser.appletsuppress'} ne 'on') {
3328: $currentstring = &Apache::lonenc::encrypt_ref($token,
3329: {'code'=>$code,
3330: 'archive'=>$archive}
3331: );
3332: } else {
3333: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3334: $safeeval,undef,1);
3335: unless ($alttag) {
3336: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3337: $code);
3338: }
3339: $currentstring='[APPLET: '.$alttag.']';
3340: }
3341: } elsif ($target eq 'tex') {
3342: # Turn off some stuff we can't be inside thank you LaTeX
3343:
3344:
3345: my $restart_sub = 0;
3346: my $restart_sup = 0;
3347:
3348: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3349: # using the start_ stop_ functions.. those tags only care about
3350: # $target.
3351:
3352: if (&is_inside_of($tagstack, "sub")) {
3353: $restart_sub = 1;
3354: $currentstring .= &end_sub($target, $token, $tagstack,
3355: $parstack, $parser, $safeeval);
3356: }
3357: if (&is_inside_of($tagstack, "sup")) {
3358: $restart_sup = 1;
3359: $currentstring .= &end_sup($target, $token, $tagstack,
3360: $parstack, $parser, $safeeval);
3361: }
3362:
3363: # Now process the applet; just replace it with its alt attribute.
3364:
3365: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3366: $safeeval,undef,1);
3367: unless ($alttag) {
3368: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3369: undef,1);
3370: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3371: $code);
3372: }
3373: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3374: '.}\end{center}';
3375:
3376: # Turn stuff back on that we can't be inside of.
3377:
3378: if ($restart_sub) {
3379: $currentstring .= &start_sub($target, $token, $tagstack,
3380: $parstack, $parser, $safeeval);
3381: }
3382: if ($restart_sup) {
3383: $currentstring .= &start_sup($target, $token, $tagstack,
3384: $parstack, $parser, $safeeval);
3385: }
3386: }
3387: return $currentstring;
3388: }
3389:
3390: sub end_applet {
3391: my ($target,$token) = @_;
3392: my $currentstring = '';
3393: if ($target eq 'web' || $target eq 'webgrade') {
3394: $currentstring = $token->[2];
3395: } elsif ($target eq 'tex') {
3396: }
3397: return $currentstring;
3398: }
3399:
3400: #-- <embed> tag (end tag optional/required)
3401: sub start_embed {
3402: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3403: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3404: &Apache::lonxml::extlink($src);
3405: my $currentstring = '';
3406: if ($target eq 'web' || $target eq 'webgrade') {
3407: if ($env{'browser.embedsuppress'} ne 'on') {
3408: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3409: } else {
3410: my $alttag=&Apache::lonxml::get_param
3411: ('alt',$parstack,$safeeval,undef,1);
3412: unless ($alttag) {
3413: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3414: }
3415: $currentstring='[EMBED: '.$alttag.']';
3416: }
3417: } elsif ($target eq 'tex') {
3418: }
3419: return $currentstring;
3420: }
3421:
3422: sub end_embed {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web' || $target eq 'webgrade') {
3426: $currentstring = $token->[2];
3427: } elsif ($target eq 'tex') {
3428: }
3429: return $currentstring;
3430: }
3431:
3432: #-- <param> tag (end tag forbidden)
3433: sub start_param {
3434: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3435: if (&Apache::lonxml::get_param('name',$parstack,
3436: $safeeval,undef,1)=~/^cabbase$/i) {
3437: my $value=&Apache::lonxml::get_param('value',$parstack,
3438: $safeeval,undef,1);
3439: &Apache::lonxml::extlink($value);
3440: }
3441:
3442: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3443: &Apache::lonxml::extlink($src);
3444: my $currentstring = '';
3445: if ($target eq 'web' || $target eq 'webgrade') {
3446: my %toconvert;
3447: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3448: if ($src) { $toconvert{'src'}= $src; }
3449: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3450: undef,1);
3451: if ($name=~/^cabbase$/i) {
3452: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3453: $safeeval,undef,1);
3454: }
3455: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3456: } elsif ($target eq 'tex') {
3457: }
3458: return $currentstring;
3459: }
3460:
3461: sub end_param {
3462: my ($target,$token) = @_;
3463: my $currentstring = '';
3464: if ($target eq 'web' || $target eq 'webgrade') {
3465: $currentstring = $token->[2];
3466: } elsif ($target eq 'tex') {
3467: }
3468: return $currentstring;
3469: }
3470:
3471: #-- <allow> tag
3472: sub start_allow {
3473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3474: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3475: &Apache::lonxml::extlink($src);
3476:
3477: if ($target eq 'tex') { &image_replication($src); }
3478: my $result;
3479: if ($target eq 'edit') {
3480: $result .=&Apache::edit::tag_start($target,$token);
3481: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3482: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3483: } elsif ($target eq 'modified') {
3484: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3485: $safeeval,'src');
3486: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3487: }
3488: return $result;
3489: }
3490:
3491: sub end_allow {
3492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3493: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3494: return '';
3495: }
3496:
3497: #-- Frames (end tag required)
3498: #-- <frameset>
3499: sub start_frameset {
3500: my ($target,$token) = @_;
3501: my $currentstring = ''; # Close any pending para.
3502: if ($target eq 'web' || $target eq 'webgrade') {
3503: $currentstring =
3504: &Apache::loncommon::start_page($Apache::londefdef::title,
3505: $Apache::londefdef::head,
3506: {'add_entries' => $token->[2],
3507: # 'no_title' => 1,
3508: 'force_register' => 1,
3509: 'frameset' => 1,});
3510:
3511: }
3512: return $currentstring;
3513: }
3514:
3515: sub end_frameset {
3516: my ($target,$token) = @_;
3517: my $currentstring = '';
3518: if ($target eq 'web' || $target eq 'webgrade') {
3519: $currentstring = $token->[2];
3520: }
3521: return $currentstring;
3522: }
3523:
3524: #-- <xmp> (end tag required)
3525: sub start_xmp {
3526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web' || $target eq 'webgrade') {
3529: $currentstring .= $token->[4];
3530: } elsif ($target eq 'tex') {
3531: $currentstring .= '\begin{verbatim}';
3532: }
3533: return $currentstring;
3534: }
3535:
3536: sub end_xmp {
3537: my ($target,$token) = @_;
3538: my $currentstring = '';
3539: if ($target eq 'web' || $target eq 'webgrade') {
3540: $currentstring .= $token->[2];
3541: } elsif ($target eq 'tex') {
3542: $currentstring .= '\end{verbatim}';
3543: }
3544: return $currentstring;
3545: }
3546:
3547: #-- <pre> (end tag required)
3548: sub start_pre {
3549: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3550: my $currentstring = &end_p(); # close off pending <p>
3551: if ($target eq 'web' || $target eq 'webgrade') {
3552: $currentstring .= $token->[4];
3553: } elsif ($target eq 'tex') {
3554: $currentstring .= '\begin{verbatim}';
3555: &Apache::lonxml::disable_LaTeX_substitutions();
3556: }
3557: return $currentstring;
3558: }
3559:
3560: sub end_pre {
3561: my ($target,$token) = @_;
3562: my $currentstring = '';
3563: if ($target eq 'web' || $target eq 'webgrade') {
3564: $currentstring .= $token->[2];
3565: } elsif ($target eq 'tex') {
3566: $currentstring .= '\end{verbatim}';
3567: &Apache::lonxml::enable_LaTeX_substitutions();
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <insert>
3573: sub start_insert {
3574: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3575: my $currentstring = '';
3576: if ($target eq 'web' || $target eq 'webgrade') {
3577: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3578: $currentstring .= '<b>'.$display.'</b>';;
3579: }
3580: return $currentstring;
3581: }
3582:
3583: sub end_insert {
3584: my ($target,$token) = @_;
3585: my $currentstring = '';
3586: if ($target eq 'web' || $target eq 'webgrade') {
3587: $currentstring .= '';
3588: }
3589: return $currentstring;
3590: }
3591:
3592: #-- <externallink>
3593: sub start_externallink {
3594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3595: my $currentstring = '';
3596: if ($target eq 'web' || $target eq 'webgrade') {
3597: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3598: $currentstring .= '<b>'.$display.'</b>';;
3599: }
3600: return $currentstring;
3601: }
3602:
3603: sub end_externallink {
3604: my ($target,$token) = @_;
3605: my $currentstring = '';
3606: if ($target eq 'web' || $target eq 'webgrade') {
3607: $currentstring .= '';
3608: }
3609: return $currentstring;
3610: }
3611:
3612: #-- <blankspace heigth="">
3613: sub start_blankspace {
3614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3615: my $currentstring = &end_p(); # closes off any unclosed <p>
3616: if ($target eq 'tex') {
3617: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3618: $currentstring .= '\vskip '.$howmuch.' ';
3619: }
3620: return $currentstring;
3621: }
3622:
3623: sub end_blankspace {
3624: my ($target,$token) = @_;
3625: my $currentstring = '';
3626: if ($target eq 'tex') {
3627: $currentstring .= '';
3628: }
3629: return $currentstring;
3630: }
3631:
3632: #-- <abbr> tag (end tag required)
3633: sub start_abbr {
3634: my ($target,$token) = @_;
3635: my $currentstring = '';
3636: if ($target eq 'web' || $target eq 'webgrade') {
3637: $currentstring = $token->[4];
3638: }
3639: return $currentstring;
3640: }
3641:
3642: sub end_abbr {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web' || $target eq 'webgrade') {
3646: $currentstring = $token->[2];
3647: }
3648: return $currentstring;
3649: }
3650:
3651: #-- <acronym> tag (end tag required)
3652: sub start_acronym {
3653: my ($target,$token) = @_;
3654: my $currentstring = '';
3655: if ($target eq 'web' || $target eq 'webgrade') {
3656: $currentstring = $token->[4];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: sub end_acronym {
3662: my ($target,$token) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web' || $target eq 'webgrade') {
3665: $currentstring = $token->[2];
3666: }
3667: return $currentstring;
3668: }
3669:
3670: #-- <area> tag (end tag forbidden)
3671: sub start_area {
3672: my ($target,$token) = @_;
3673: my $currentstring = '';
3674: if ($target eq 'web' || $target eq 'webgrade') {
3675: $currentstring = $token->[4];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: sub end_area {
3681: my ($target,$token) = @_;
3682: my $currentstring = '';
3683: if ($target eq 'web' || $target eq 'webgrade') {
3684: $currentstring = $token->[2];
3685: }
3686: return $currentstring;
3687: }
3688:
3689: #-- <base> tag (end tag forbidden)
3690: sub start_base {
3691: my ($target,$token) = @_;
3692: my $currentstring = '';
3693: if ($target eq 'web' || $target eq 'webgrade') {
3694: $currentstring = $token->[4];
3695: }
3696: return $currentstring;
3697: }
3698:
3699: sub end_base {
3700: my ($target,$token) = @_;
3701: my $currentstring = '';
3702: if ($target eq 'web' || $target eq 'webgrade') {
3703: $currentstring = $token->[2];
3704: }
3705: return $currentstring;
3706: }
3707:
3708: #-- <bdo> tag (end tag required)
3709: sub start_bdo {
3710: my ($target,$token) = @_;
3711: my $currentstring = '';
3712: if ($target eq 'web' || $target eq 'webgrade') {
3713: $currentstring = $token->[4];
3714: }
3715: return $currentstring;
3716: }
3717:
3718: sub end_bdo {
3719: my ($target,$token) = @_;
3720: my $currentstring = '';
3721: if ($target eq 'web' || $target eq 'webgrade') {
3722: $currentstring = $token->[2];
3723: }
3724: return $currentstring;
3725: }
3726:
3727: #-- <bgsound> tag (end tag optional)
3728: sub start_bgsound {
3729: my ($target,$token) = @_;
3730: my $currentstring = '';
3731: if ($target eq 'web' || $target eq 'webgrade') {
3732: $currentstring = $token->[4];
3733: }
3734: return $currentstring;
3735: }
3736:
3737: sub end_bgsound {
3738: my ($target,$token) = @_;
3739: my $currentstring = '';
3740: if ($target eq 'web' || $target eq 'webgrade') {
3741: $currentstring = $token->[2];
3742: }
3743: return $currentstring;
3744: }
3745:
3746: #-- <blink> tag (end tag required)
3747: sub start_blink {
3748: my ($target,$token) = @_;
3749: my $currentstring = '';
3750: if ($target eq 'web' || $target eq 'webgrade') {
3751: $currentstring = $token->[4];
3752: }
3753: return $currentstring;
3754: }
3755:
3756: sub end_blink {
3757: my ($target,$token) = @_;
3758: my $currentstring = '';
3759: if ($target eq 'web' || $target eq 'webgrade') {
3760: $currentstring = $token->[2];
3761: }
3762: return $currentstring;
3763: }
3764:
3765: #-- <blockquote> tag (end tag required)
3766: sub start_blockquote {
3767: my ($target,$token) = @_;
3768: my $currentstring = &end_p(); # Close any unclosed <p>
3769: if ($target eq 'web' || $target eq 'webgrade') {
3770: $currentstring .= $token->[4];
3771: }
3772: if ($target eq 'tex') {
3773: $currentstring .= '\begin{quote}';
3774: }
3775: return $currentstring;
3776: }
3777:
3778: sub end_blockquote {
3779: my ($target,$token) = @_;
3780: my $currentstring = '';
3781: if ($target eq 'web' || $target eq 'webgrade') {
3782: $currentstring = $token->[2];
3783: }
3784: if ($target eq 'tex') {
3785: $currentstring = '\end{quote}';
3786: }
3787: return $currentstring;
3788: }
3789:
3790: #-- <button> tag (end tag required)
3791: sub start_button {
3792: my ($target,$token) = @_;
3793: my $currentstring = '';
3794: if ($target eq 'web' || $target eq 'webgrade') {
3795: $currentstring = $token->[4];
3796: }
3797: return $currentstring;
3798: }
3799:
3800: sub end_button {
3801: my ($target,$token) = @_;
3802: my $currentstring = '';
3803: if ($target eq 'web' || $target eq 'webgrade') {
3804: $currentstring = $token->[2];
3805: }
3806: return $currentstring;
3807: }
3808:
3809: #-- <caption> tag (end tag required)
3810: sub start_caption {
3811: my ($target,$token) = @_;
3812: my $currentstring = '';
3813: if ($target eq 'web' || $target eq 'webgrade') {
3814: $currentstring = $token->[4];
3815: }
3816: return $currentstring;
3817: }
3818:
3819: sub end_caption {
3820: my ($target,$token) = @_;
3821: my $currentstring = '';
3822: if ($target eq 'web' || $target eq 'webgrade') {
3823: $currentstring = $token->[2];
3824: }
3825: return $currentstring;
3826: }
3827:
3828: #-- <col> tag (end tag forbdden)
3829: sub start_col {
3830: my ($target,$token) = @_;
3831: my $currentstring = '';
3832: if ($target eq 'web' || $target eq 'webgrade') {
3833: $currentstring = $token->[4];
3834: }
3835: return $currentstring;
3836: }
3837:
3838: sub end_col {
3839: my ($target,$token) = @_;
3840: my $currentstring = '';
3841: if ($target eq 'web' || $target eq 'webgrade') {
3842: $currentstring = $token->[2];
3843: }
3844: return $currentstring;
3845: }
3846:
3847: #-- <colgroup> tag (end tag optional)
3848: sub start_colgroup {
3849: my ($target,$token) = @_;
3850: my $currentstring = '';
3851: if ($target eq 'web' || $target eq 'webgrade') {
3852: $currentstring = $token->[4];
3853: }
3854: return $currentstring;
3855: }
3856:
3857: sub end_colgroup {
3858: my ($target,$token) = @_;
3859: my $currentstring = '';
3860: if ($target eq 'web' || $target eq 'webgrade') {
3861: $currentstring = $token->[2];
3862: }
3863: return $currentstring;
3864: }
3865:
3866: #-- <del> tag (end tag required)
3867: sub start_del {
3868: my ($target,$token) = @_;
3869: my $currentstring = '';
3870: if ($target eq 'web' || $target eq 'webgrade') {
3871: $currentstring = $token->[4];
3872: }
3873: return $currentstring;
3874: }
3875:
3876: sub end_del {
3877: my ($target,$token) = @_;
3878: my $currentstring = '';
3879: if ($target eq 'web' || $target eq 'webgrade') {
3880: $currentstring = $token->[2];
3881: }
3882: return $currentstring;
3883: }
3884:
3885: #-- <fieldset> tag (end tag required)
3886: sub start_fieldset {
3887: my ($target,$token) = @_;
3888: my $currentstring = '';
3889: if ($target eq 'web' || $target eq 'webgrade') {
3890: $currentstring = $token->[4];
3891: }
3892: return $currentstring;
3893: }
3894:
3895: sub end_fieldset {
3896: my ($target,$token) = @_;
3897: my $currentstring = '';
3898: if ($target eq 'web' || $target eq 'webgrade') {
3899: $currentstring = $token->[2];
3900: }
3901: return $currentstring;
3902: }
3903:
3904: #-- <frame> tag (end tag forbidden)
3905: sub start_frame {
3906: my ($target,$token) = @_;
3907: my $currentstring = '';
3908: if ($target eq 'web' || $target eq 'webgrade') {
3909: $currentstring = $token->[4];
3910: }
3911: return $currentstring;
3912: }
3913:
3914: sub end_frame {
3915: my ($target,$token) = @_;
3916: my $currentstring = '';
3917: if ($target eq 'web' || $target eq 'webgrade') {
3918: $currentstring = $token->[2];
3919: }
3920: return $currentstring;
3921: }
3922:
3923: #-- <iframe> tag (end tag required)
3924: sub start_iframe {
3925: my ($target,$token) = @_;
3926: my $currentstring = '';
3927: if ($target eq 'web' || $target eq 'webgrade') {
3928: $currentstring = $token->[4];
3929: }
3930: return $currentstring;
3931: }
3932:
3933: sub end_iframe {
3934: my ($target,$token) = @_;
3935: my $currentstring = '';
3936: if ($target eq 'web' || $target eq 'webgrade') {
3937: $currentstring = $token->[2];
3938: }
3939: return $currentstring;
3940: }
3941:
3942: #-- <ins> tag (end tag required)
3943: sub start_ins {
3944: my ($target,$token) = @_;
3945: my $currentstring = '';
3946: if ($target eq 'web' || $target eq 'webgrade') {
3947: $currentstring = $token->[4];
3948: }
3949: return $currentstring;
3950: }
3951:
3952: sub end_ins {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[2];
3957: }
3958: return $currentstring;
3959: }
3960:
3961: #-- <isindex> tag (end tag forbidden)
3962: sub start_isindex {
3963: my ($target,$token) = @_;
3964: my $currentstring = '';
3965: if ($target eq 'web' || $target eq 'webgrade') {
3966: $currentstring = $token->[4];
3967: }
3968: return $currentstring;
3969: }
3970:
3971: sub end_isindex {
3972: my ($target,$token) = @_;
3973: my $currentstring = '';
3974: if ($target eq 'web' || $target eq 'webgrade') {
3975: $currentstring = $token->[2];
3976: }
3977: return $currentstring;
3978: }
3979:
3980: #-- <keygen> tag (end tag forbidden)
3981: sub start_keygen {
3982: my ($target,$token) = @_;
3983: my $currentstring = '';
3984: if ($target eq 'web' || $target eq 'webgrade') {
3985: $currentstring = $token->[4];
3986: }
3987: return $currentstring;
3988: }
3989:
3990: sub end_keygen {
3991: my ($target,$token) = @_;
3992: my $currentstring = '';
3993: if ($target eq 'web' || $target eq 'webgrade') {
3994: $currentstring = $token->[2];
3995: }
3996: return $currentstring;
3997: }
3998:
3999: #-- <label> tag
4000: sub start_label {
4001: my ($target,$token) = @_;
4002: my $currentstring = '';
4003: if ($target eq 'web' || $target eq 'webgrade') {
4004: $currentstring = $token->[4];
4005: }
4006: return $currentstring;
4007: }
4008:
4009: sub end_label {
4010: my ($target,$token) = @_;
4011: my $currentstring = '';
4012: if ($target eq 'web' || $target eq 'webgrade') {
4013: $currentstring = $token->[2];
4014: }
4015: return $currentstring;
4016: }
4017:
4018: #-- <layer> tag (end tag required)
4019: sub start_layer {
4020: my ($target,$token) = @_;
4021: my $currentstring = '';
4022: if ($target eq 'web' || $target eq 'webgrade') {
4023: $currentstring = $token->[4];
4024: }
4025: return $currentstring;
4026: }
4027:
4028: sub end_layer {
4029: my ($target,$token) = @_;
4030: my $currentstring = '';
4031: if ($target eq 'web' || $target eq 'webgrade') {
4032: $currentstring = $token->[2];
4033: }
4034: return $currentstring;
4035: }
4036:
4037: #-- <legend> tag (end tag required)
4038: sub start_legend {
4039: my ($target,$token) = @_;
4040: my $currentstring = '';
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: $currentstring = $token->[4];
4043: }
4044: return $currentstring;
4045: }
4046:
4047: sub end_legend {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = $token->[2];
4052: }
4053: return $currentstring;
4054: }
4055:
4056: #-- <link> tag (end tag forbidden)
4057: sub start_link {
4058: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4059: my $currentstring = '';
4060: if ($target eq 'web' || $target eq 'webgrade') {
4061: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4062: undef,1);
4063: &Apache::lonxml::extlink($href);
4064: $currentstring = $token->[4];
4065: }
4066: return $currentstring;
4067: }
4068:
4069: sub end_link {
4070: my ($target,$token) = @_;
4071: my $currentstring = '';
4072: if ($target eq 'web' || $target eq 'webgrade') {
4073: $currentstring = $token->[2];
4074: }
4075: return $currentstring;
4076: }
4077:
4078: #-- <marquee> tag (end tag optional)
4079: sub start_marquee {
4080: my ($target,$token) = @_;
4081: my $currentstring = '';
4082: if ($target eq 'web' || $target eq 'webgrade') {
4083: $currentstring = $token->[4];
4084: }
4085: return $currentstring;
4086: }
4087:
4088: sub end_marquee {
4089: my ($target,$token) = @_;
4090: my $currentstring = '';
4091: if ($target eq 'web' || $target eq 'webgrade') {
4092: $currentstring = $token->[2];
4093: }
4094: return $currentstring;
4095: }
4096:
4097: #-- <multicol> tag (end tag required)
4098: sub start_multicol {
4099: my ($target,$token) = @_;
4100: my $currentstring = &end_p(); # Close any pending <p>
4101: if ($target eq 'web' || $target eq 'webgrade') {
4102: $currentstring .= $token->[4];
4103: }
4104: return $currentstring;
4105: }
4106:
4107: sub end_multicol {
4108: my ($target,$token) = @_;
4109: my $currentstring = '';
4110: if ($target eq 'web' || $target eq 'webgrade') {
4111: $currentstring = $token->[2];
4112: }
4113: return $currentstring;
4114: }
4115:
4116: #-- <nobr> tag (end tag required)
4117: sub start_nobr {
4118: my ($target,$token) = @_;
4119: my $currentstring = '';
4120: if ($target eq 'web' || $target eq 'webgrade') {
4121: $currentstring = $token->[4];
4122: } elsif ($target eq 'tex') {
4123: $currentstring='\mbox{';
4124: }
4125: return $currentstring;
4126: }
4127:
4128: sub end_nobr {
4129: my ($target,$token) = @_;
4130: my $currentstring = '';
4131: if ($target eq 'web' || $target eq 'webgrade') {
4132: $currentstring = $token->[2];
4133: } elsif ($target eq 'tex') {
4134: $currentstring='}';
4135: }
4136: return $currentstring;
4137: }
4138:
4139: #-- <noembed> tag (end tag required)
4140: sub start_noembed {
4141: my ($target,$token) = @_;
4142: my $currentstring = '';
4143: if ($target eq 'web' || $target eq 'webgrade') {
4144: $currentstring = $token->[4];
4145: }
4146: return $currentstring;
4147: }
4148:
4149: sub end_noembed {
4150: my ($target,$token) = @_;
4151: my $currentstring = '';
4152: if ($target eq 'web' || $target eq 'webgrade') {
4153: $currentstring = $token->[2];
4154: }
4155: return $currentstring;
4156: }
4157:
4158: #-- <noframes> tag (end tag required)
4159: sub start_noframes {
4160: my ($target,$token) = @_;
4161: my $currentstring = '';
4162: if ($target eq 'web' || $target eq 'webgrade') {
4163: $currentstring = $token->[4];
4164: }
4165: return $currentstring;
4166: }
4167:
4168: sub end_noframes {
4169: my ($target,$token) = @_;
4170: my $currentstring = '';
4171: if ($target eq 'web' || $target eq 'webgrade') {
4172: $currentstring = $token->[2];
4173: }
4174: return $currentstring;
4175: }
4176:
4177: #-- <nolayer> tag (end tag required)
4178: sub start_nolayer {
4179: my ($target,$token) = @_;
4180: my $currentstring = '';
4181: if ($target eq 'web' || $target eq 'webgrade') {
4182: $currentstring = $token->[4];
4183: }
4184: return $currentstring;
4185: }
4186:
4187: sub end_nolayer {
4188: my ($target,$token) = @_;
4189: my $currentstring = '';
4190: if ($target eq 'web' || $target eq 'webgrade') {
4191: $currentstring = $token->[2];
4192: }
4193: return $currentstring;
4194: }
4195:
4196: #-- <noscript> tag (end tag required)
4197: sub start_noscript {
4198: my ($target,$token) = @_;
4199: my $currentstring = '';
4200: if ($target eq 'web' || $target eq 'webgrade') {
4201: $currentstring = $token->[4];
4202: }
4203: return $currentstring;
4204: }
4205:
4206: sub end_noscript {
4207: my ($target,$token) = @_;
4208: my $currentstring = '';
4209: if ($target eq 'web' || $target eq 'webgrade') {
4210: $currentstring = $token->[2];
4211: }
4212: return $currentstring;
4213: }
4214:
4215: #-- <object> tag (end tag required)
4216: sub start_object {
4217: my ($target,$token) = @_;
4218: my $currentstring = '';
4219: if ($target eq 'web' || $target eq 'webgrade') {
4220: $currentstring = $token->[4];
4221: }
4222: return $currentstring;
4223: }
4224:
4225: sub end_object {
4226: my ($target,$token) = @_;
4227: my $currentstring = '';
4228: if ($target eq 'web' || $target eq 'webgrade') {
4229: $currentstring = $token->[2];
4230: }
4231: return $currentstring;
4232: }
4233:
4234: #-- <optgroup> tag (end tag required)
4235: sub start_optgroup {
4236: my ($target,$token) = @_;
4237: my $currentstring = '';
4238: if ($target eq 'web' || $target eq 'webgrade') {
4239: $currentstring = $token->[4];
4240: }
4241: return $currentstring;
4242: }
4243:
4244: sub end_optgroup {
4245: my ($target,$token) = @_;
4246: my $currentstring = '';
4247: if ($target eq 'web' || $target eq 'webgrade') {
4248: $currentstring = $token->[2];
4249: }
4250: return $currentstring;
4251: }
4252:
4253: #-- <samp> tag (end tag required)
4254: sub start_samp {
4255: my ($target,$token) = @_;
4256: my $currentstring = '';
4257: if ($target eq 'web' || $target eq 'webgrade') {
4258: $currentstring = $token->[4];
4259: } elsif ($target eq 'tex') {
4260: $currentstring='\texttt{';
4261: }
4262: return $currentstring;
4263: }
4264:
4265: sub end_samp {
4266: my ($target,$token) = @_;
4267: my $currentstring = '';
4268: if ($target eq 'web' || $target eq 'webgrade') {
4269: $currentstring = $token->[2];
4270: } elsif ($target eq 'tex') {
4271: $currentstring='}';
4272: }
4273: return $currentstring;
4274: }
4275:
4276: #-- <server> tag
4277: sub start_server {
4278: my ($target,$token) = @_;
4279: my $currentstring = '';
4280: if ($target eq 'web' || $target eq 'webgrade') {
4281: $currentstring = $token->[4];
4282: }
4283: return $currentstring;
4284: }
4285:
4286: sub end_server {
4287: my ($target,$token) = @_;
4288: my $currentstring = '';
4289: if ($target eq 'web' || $target eq 'webgrade') {
4290: $currentstring = $token->[2];
4291: }
4292: return $currentstring;
4293: }
4294:
4295: #-- <spacer> tag (end tag forbidden)
4296: sub start_spacer {
4297: my ($target,$token) = @_;
4298: my $currentstring = &end_p(); # Close off any open <p> tag.
4299: if ($target eq 'web' || $target eq 'webgrade') {
4300: $currentstring .= $token->[4];
4301: }
4302: return $currentstring;
4303: }
4304:
4305: sub end_spacer {
4306: my ($target,$token) = @_;
4307: my $currentstring = '';
4308: if ($target eq 'web' || $target eq 'webgrade') {
4309: $currentstring = $token->[2];
4310: }
4311: return $currentstring;
4312: }
4313:
4314: #-- <span> tag (end tag required)
4315: sub start_span {
4316: my ($target,$token) = @_;
4317: my $currentstring = '';
4318: if ($target eq 'web' || $target eq 'webgrade') {
4319: $currentstring = $token->[4];
4320: }
4321: return $currentstring;
4322: }
4323:
4324: sub end_span {
4325: my ($target,$token) = @_;
4326: my $currentstring = '';
4327: if ($target eq 'web' || $target eq 'webgrade') {
4328: $currentstring = $token->[2];
4329: }
4330: return $currentstring;
4331: }
4332:
4333: #-- <tbody> tag (end tag optional)
4334: sub start_tbody {
4335: my ($target,$token) = @_;
4336: my $currentstring = '';
4337: if ($target eq 'web' || $target eq 'webgrade') {
4338: $currentstring = $token->[4];
4339: }
4340: return $currentstring;
4341: }
4342:
4343: sub end_tbody {
4344: my ($target,$token) = @_;
4345: my $currentstring = '';
4346: if ($target eq 'web' || $target eq 'webgrade') {
4347: $currentstring = $token->[2];
4348: }
4349: return $currentstring;
4350: }
4351:
4352: #-- <tfoot> tag (end tag optional)
4353: sub start_tfoot {
4354: my ($target,$token) = @_;
4355: my $currentstring = '';
4356: if ($target eq 'web' || $target eq 'webgrade') {
4357: $currentstring = $token->[4];
4358: }
4359: return $currentstring;
4360: }
4361:
4362: sub end_tfoot {
4363: my ($target,$token) = @_;
4364: my $currentstring = '';
4365: if ($target eq 'web' || $target eq 'webgrade') {
4366: $currentstring = $token->[2];
4367: }
4368: return $currentstring;
4369: }
4370:
4371: #-- <thead> tag (end tag optional)
4372: sub start_thead {
4373: my ($target,$token) = @_;
4374: my $currentstring = '';
4375: if ($target eq 'web' || $target eq 'webgrade') {
4376: $currentstring = $token->[4];
4377: }
4378: return $currentstring;
4379: }
4380:
4381: sub end_thead {
4382: my ($target,$token) = @_;
4383: my $currentstring = '';
4384: if ($target eq 'web' || $target eq 'webgrade') {
4385: $currentstring = $token->[2];
4386: }
4387: return $currentstring;
4388: }
4389:
4390: #-- <var> tag
4391: sub start_var {
4392: my ($target,$token) = @_;
4393: my $currentstring = '';
4394: if ($target eq 'web' || $target eq 'webgrade') {
4395: $currentstring = $token->[4];
4396: } elsif ($target eq 'tex') {
4397: $currentstring = '\textit{';
4398: }
4399: return $currentstring;
4400: }
4401:
4402: sub end_var {
4403: my ($target,$token) = @_;
4404: my $currentstring = '';
4405: if ($target eq 'web' || $target eq 'webgrade') {
4406: $currentstring = $token->[2];
4407: } elsif ($target eq 'tex') {
4408: $currentstring = '}';
4409: }
4410: return $currentstring;
4411: }
4412:
4413: #-- <wbr> tag (end tag forbidden)
4414: sub start_wbr {
4415: my ($target,$token) = @_;
4416: my $currentstring = '';
4417: if ($target eq 'web' || $target eq 'webgrade') {
4418: $currentstring = $token->[4];
4419: }
4420: return $currentstring;
4421: }
4422:
4423: sub end_wbr {
4424: my ($target,$token) = @_;
4425: my $currentstring = '';
4426: if ($target eq 'web' || $target eq 'webgrade') {
4427: $currentstring = $token->[2];
4428: }
4429: return $currentstring;
4430: }
4431:
4432: #-- <hideweboutput> tag
4433: sub start_hideweboutput {
4434: my ($target,$token) = @_;
4435: if ($target eq 'web' || $target eq 'webgrade') {
4436: &Apache::lonxml::startredirection();
4437: }
4438: return '';
4439: }
4440:
4441: sub end_hideweboutput {
4442: my ($target,$token) = @_;
4443: my $currentstring = '';
4444: if ($target eq 'web' || $target eq 'webgrade') {
4445: $currentstring = &Apache::lonxml::endredirection();
4446: }
4447: return '';
4448: }
4449:
4450:
4451: sub image_replication {
4452: my $src = shift;
4453: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4454: #replicates eps or ps
4455: my $epssrc = my $pssrc = $src;
4456: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4457: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4458: if (not -e $epssrc && not -e $pssrc) {
4459: my $result=&Apache::lonnet::repcopy($epssrc);
4460: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4461: }
4462: return '';
4463: }
4464:
4465:
4466:
4467: sub resize_image {
4468: my ($height_param, $width_param, $scaling,
4469: $parstack, $safeeval, $depth, $cis) = @_;
4470:
4471: # First apply the scaling...
4472:
4473: $height_param = $height_param * $scaling;
4474: $width_param = $width_param * $scaling;
4475:
4476: #do we have any specified LaTeX size of the picture?
4477: my $toget='TeXwidth';
4478: if ($cis) {
4479: $toget=lc($toget);
4480: }
4481: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4482: $safeeval,$depth,$cis);
4483: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4484: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4485: $safeeval,$depth,$cis);
4486: #do we have any specified web size of the picture?
4487: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4488: $depth,1);
4489: if ($TeXwidth) {
4490: my $old_width_param=$width_param;
4491: if ($TeXwidth=~/(\d+)\s*\%/) {
4492: $width_param = $1*$env{'form.textwidth'}/100;
4493: } else {
4494: $width_param = $TeXwidth;
4495: }
4496: if ($TeXheight) {
4497: $height_param = $TeXheight;
4498: } elsif ($old_width_param) {
4499: $height_param=$TeXwidth/$old_width_param*$height_param;
4500: }
4501: } elsif ($TeXheight) {
4502: $height_param = $TeXheight;
4503: if ($height_param) {
4504: $width_param = $TeXheight/$height_param*$width_param;
4505: }
4506: } elsif ($width) {
4507: my $old_width_param=$width_param;
4508: $width_param = $width*$scaling;
4509: if ($old_width_param) {
4510: $height_param=$width_param/$old_width_param*$height_param;
4511: }
4512: }
4513: if ($width_param > $env{'form.textwidth'}) {
4514: my $old_width_param=$width_param;
4515: $width_param =0.95*$env{'form.textwidth'};
4516: if ($old_width_param) {
4517: $height_param=$width_param/$old_width_param*$height_param;
4518: }
4519: }
4520:
4521: return ($height_param, $width_param);
4522: }
4523:
4524: sub image_size {
4525: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4526:
4527: #size of image from gif/jpg/jpeg/png
4528: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4529: if (-e $ressrc) {
4530: $src = $ressrc;
4531: }
4532: my $image = Image::Magick->new;
4533: my $current_figure = $image->Read($src);
4534: my $width_param = $image->Get('width');
4535: my $height_param = $image->Get('height');
4536: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4537: undef($image);
4538:
4539: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4540: $scaling, $parstack, $safeeval,
4541: $depth, $cis);
4542:
4543: return ($height_param, $width_param);
4544: }
4545:
4546: sub image_width {
4547: my ($height, $width) = &image_size(@_);
4548: return $width;
4549: }
4550: # Not yet 100% sure this is correct in all circumstances..
4551: # due to my uncertainty about mods to image_size.
4552: #
4553: sub image_height {
4554: my ($height, $width) = &image_size(@_);
4555: return $height;
4556: }
4557:
4558: sub get_eps_image {
4559: my ($src)=@_;
4560: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4561:
4562: # In order to prevent the substitution of the alt text, we need to
4563: # be sure the orig_src file is on system now so:
4564:
4565: if (! -e $orig_src) {
4566: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4567: }
4568: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4569: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4570: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4571: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4572: &Apache::lonxml::debug("Filelocation gives: $src");
4573: if (! -e $src) {
4574: &Apache::lonxml::debug("$src does not exist");
4575: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4576: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4577: #if replication failed try to find ps file
4578: $src=~s/\.eps$/\.ps/;
4579: &Apache::lonxml::debug("Now looking for $src");
4580: #if no ps file try to replicate it.
4581: my $didrepcopy = &Apache::lonnet::repcopy($src);
4582: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4583: if ( (not -e $src) ||
4584: ($didrepcopy ne 'ok')) {
4585: &Apache::lonxml::debug("Failed to find or replicate $src");
4586:
4587: #if replication failed try to produce eps file dynamically
4588: $src=~s/\.ps$/\.eps/;
4589: my $temp_file;
4590: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4591: my $newsrc=$orig_src;
4592: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4593: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4594: print FILE ("$newsrc\n");
4595: close(FILE);
4596: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4597: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4598: if ($sext ne "") { # Put the ext. back in to uniquify.
4599: $src =~ s/\.eps$/$sext.eps/;
4600: }
4601:
4602: }
4603:
4604: }
4605: } else {
4606: # If the postscript file has spaces in its name,
4607: # LaTeX will gratuitiously vomit. Therefore
4608: # queue such files for copy with " " replaced by "_".
4609: # printout.pm will know them by their .ps or .eps extensions.
4610: my $newsrc = $orig_src;
4611: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4612: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4613: print FILE "$src\n";
4614: close FILE;
4615: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4616: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4617: }
4618: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4619: $path =~ s/ /\_/g;
4620: $file =~ s/ /\_/g;
4621: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4622: return ($path.'/',$file);
4623: }
4624:
4625: sub eps_generation {
4626: my ($src,$file,$width_param) = @_;
4627: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4628: my $temp_file = Apache::File->new('>>'.$filename);
4629: print $temp_file "$src\n";
4630: my $newsrc = $src;
4631: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4632: $newsrc=~s{/home/httpd/html/res}{};
4633: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4634: $newsrc=~s{/\./}{/};
4635: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4636: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4637: $newsrc=~s{/home/httpd/lonUsers}{};
4638: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4639: }
4640: if ($newsrc=~m{/userfiles/}) {
4641: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4642: } else {
4643: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4644: }
4645: }
4646:
4647: sub file_path {
4648: my $src=shift;
4649: my ($file,$path);
4650: if ($src =~ m!(.*)/([^/]*)$!) {
4651: $file = $2;
4652: $path = $1.'/';
4653: }
4654: return $file,$path;
4655: }
4656:
4657:
4658: sub recalc {
4659: my $argument = shift;
4660: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4661: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4662: my $value=$1;
4663: my $units=$2;
4664: if ($units eq 'cm') {
4665: $value*=10;
4666: } elsif ($units eq 'in') {
4667: $value*=25.4;
4668: } elsif ($units eq 'pc') {
4669: $value*=(25.4*12/72.27);
4670: } elsif ($units eq 'pt') {
4671: $value*=(25.4/72.27);
4672: }
4673: return $value.' mm';
4674: }
4675:
4676: sub LATEX_length {
4677: my $garbage=shift;
4678: $garbage=~s/^\s+$//;
4679: $garbage=~s/^\s+(\S.*)/$1/;#space before
4680: $garbage=~s/(.*\S)\s+$/$1/;#space after
4681: $garbage=~s/(\s)+/$1/;#only one space
4682: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4683: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4684: $garbage=~s/([^\\])\$/$1/g;#$
4685: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4686: $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;
4687: $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;
4688: $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;
4689: $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;
4690: $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;
4691: $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;
4692: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4693: #remove some other LaTeX command
4694: $garbage=~s|\\(\w+)\\|\\|g;
4695: $garbage=~s|\\(\w+)(\s*)|$2|g;
4696: $garbage=~s|\+|11|g;
4697: my $value=length($garbage);
4698: return $value;
4699: }
4700:
4701:
4702: sub align_latex_image {
4703: my ($align, $latex_rendering, $image, $width, $height) = @_;
4704: my $currentstring; # The 1/2 wrapped image.
4705: my $closure; # The closure of the wrappage.
4706:
4707: # if it's none just return it back
4708: if ($latex_rendering eq 'none') {
4709: return ($image,'');
4710: }
4711:
4712: # If there's an alignment specification we need to honor it here.
4713: # For the horizontal alignments, we will also honor the
4714: # value of the latex specfication. The default is parbox,
4715: # and that's used for illegal values too.
4716: #
4717: # Even though we set a default alignment value, the user
4718: # could have given us an illegal value. In that case we
4719: # just use the default alignment of bottom..
4720: $currentstring = "\n% figurewrapping \n";
4721: if ($align eq "top") {
4722: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4723: $closure = '}';
4724: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4725: my $offset = $height/2;
4726: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4727: $closure = '}';
4728: } elsif ($align eq "left") {
4729: if ($latex_rendering eq "parpic") {
4730: $currentstring .= '\parpic[l]{'.$image;
4731: $closure = '}';
4732: } elsif ($latex_rendering eq "parbox") {
4733: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4734: .$image;
4735: $closure = '\end{minipage}';
4736: } elsif ($latex_rendering eq "wrapfigure"
4737: || $latex_rendering ne 'none') { # wrapfig render
4738: $currentstring .=
4739: '\begin{wrapfigure}{l}{'.$width.'mm}'
4740: .'\scalebox{1.0}{'.$image;
4741: $closure = '}\end{wrapfigure}';
4742: }
4743: } elsif ($align eq "right") {
4744: if ($latex_rendering eq "parpic") {
4745: $currentstring .= '\parpic[r]{'.$image;
4746: $closure = '}';
4747: } elsif ($latex_rendering eq "parbox") {
4748: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4749: .$image;
4750: $closure = '\end{minipage}';
4751: } elsif ($latex_rendering eq "wrapfigure"
4752: || $latex_rendering ne 'none') { # wrapfig render
4753: $currentstring .=
4754: '\begin{wrapfigure}{r}{'.$width.'mm}'
4755: .'\scalebox{1.0}{'.$image;
4756: $closure = '}\end{wrapfigure}';
4757: }
4758: } else { # Bottom is also default.
4759: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4760: $currentstring .= "{$image";
4761: $closure = '}';
4762: }
4763: $currentstring .= "\n% end wrappage\n";
4764: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4765: return ($currentstring, $closure);
4766: }
4767:
4768:
4769: sub is_inside_of {
4770: my ($tagstack, $tag) = @_;
4771: my @stack = @$tagstack;
4772: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4773: if ($stack[$i] eq $tag) {
4774: return 1;
4775: }
4776: }
4777: return 0;
4778: }
4779:
4780:
4781: #
4782: # This sub provides the typical LaTeX prefix matter for tex output:
4783: #
4784: sub latex_header
4785: {
4786: my ($mode) = @_;
4787: my $currentstring = '';
4788:
4789: $currentstring .=
4790: "\n% &Apache::lonxml::londefdef \n" .
4791: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4792: if (($env{'form.latex_type'}=~'batchmode') ||
4793: (!$env{'request.role.adv'}) ||
4794: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4795: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4796: '\renewcommand{\deg}{$^{\circ}$}'.
4797: '\usepackage{multirow}'.
4798: '\usepackage{longtable}'.
4799: '\usepackage{textcomp}'.
4800: '\usepackage{makeidx}'.
4801: '\usepackage[dvips]{graphicx}'.
4802: '\usepackage{wrapfig}'.
4803: '\usepackage{picins}'.
4804: '\usepackage[T1]{fontenc}'."\n".
4805: '\usepackage{lmodern}'."\n".
4806: '\usepackage[postscript]{ucs}'."\n".
4807: '\usepackage[utf8x]{inputenc}'."\n".
4808: '\usepackage{pifont}' ."\n".
4809: '\usepackage{latexsym}'."\n".
4810: '\usepackage{epsfig}'.
4811: "\\usepackage{xtab}\n".
4812: "\\usepackage{tabularx}\n".
4813: "\\usepackage{booktabs}\n".
4814: "\\usepackage{array}\n".
4815: "\\usepackage{colortbl}\n".
4816: "\\usepackage{xcolor}\n".
4817: '\usepackage{calc}'.
4818: '\usepackage{amsmath}'.
4819: '\usepackage{amssymb}'.
4820: '\usepackage{amsfonts}'.
4821: '\usepackage{amsthm}'.
4822: '\usepackage{amscd}'
4823: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4824: '\usepackage[T1]{fontenc}'."\n".
4825: '\usepackage{lmodern}'."\n".
4826: '\usepackage[postscript]{ucs}'."\n".
4827: '\usepackage[utf8x]{inputenc}'."\n".
4828: '\usepackage{pifont}' . "\n";
4829:
4830: if($env{'form.pdfFormFields'} eq 'yes') {
4831: $currentstring .= '\usepackage{hyperref}'.
4832: '\usepackage{eforms}'.
4833: '\usepackage{tabularx}';
4834: }
4835:
4836: $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}}'.
4837: '\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}}';
4838: $currentstring .= '\begin{document}';
4839:
4840: return $currentstring;
4841:
4842: }
4843:
4844: =pod
4845:
4846: =head1 NAME
4847:
4848: Apache::londefdef.pm
4849:
4850: =head1 SYNOPSIS
4851:
4852: Tags Default Definition Module
4853:
4854: This is part of the LearningOnline Network with CAPA project
4855: described at http://www.lon-capa.org.
4856:
4857:
4858: =head1 NOTABLE SUBROUTINES
4859:
4860: =over
4861:
4862: =item start_hideweboutput()
4863:
4864: =item end_hideweboutput()
4865:
4866: =item image_replication()
4867:
4868: =item resize_image()
4869:
4870: Get correct sizing parameter for an image given
4871: it's initial ht. and wid. This allows sizing of
4872: images that are generated on-the-fly (e.g. gnuplot)
4873: as well as serving as a utility for image_size.
4874:
4875: Parameter:
4876: height_param
4877: width_param - Initial picture dimensions.
4878: scaling - A scale factor.
4879: parstack, - the current stack of tag attributes
4880: from the xml parser
4881: safeeval, - pointer to the safespace
4882: depth, - from what level in the stack to look for attributes
4883: (assumes -1 if unspecified)
4884: cis - look for attrubutes case insensitively
4885: (assumes false)
4886:
4887: Returns:
4888: height, width - new dimensions.
4889:
4890: =item image_size()
4891:
4892: =item image_width()
4893:
4894: =item image_height()
4895:
4896: =item get_eps_image()
4897:
4898: =item eps_generation()
4899:
4900: =item file_path()
4901:
4902: =item recalc()
4903:
4904: Converts a measurement in to mm from any of
4905: the other valid LaTeX units of measure.
4906: If the units of measure are missing from the
4907: parameter, it is assumed to be in and returned
4908: with mm units of measure
4909:
4910: =item LATEX_length()
4911:
4912: =item align_latex_image()
4913:
4914: Wrap image 'stuff' inside of the LaTeX required to implement
4915: alignment:
4916: align_tex_image(align, latex_rendering, image)
4917: Where:
4918: align - The HTML alignment specification.
4919: latex_rendering - rendering hint for latex.
4920: image - The LaTeX needed to insert the image itsef.
4921: width,height - dimensions of the image.
4922: Returns:
4923: The 1/2 wrapped image and the stuff required to close the
4924: wrappage. This allows e.g. randomlabel to insert more stuff
4925: into the closure.
4926:
4927:
4928: =item is_inside_of($tagstack, $tag)
4929: This sub returns true if the current state of Xml processing is inside of the tag.
4930: Parameters:
4931: tagstack - The tagstack from the parser.
4932: tag - The tag (without the <>'s.).
4933: Sample usage:
4934: if (is_inside_of($tagstack "table")) {
4935: I'm in a table....
4936: }
4937:
4938:
4939:
4940: =back
4941:
4942: =cut
4943:
4944:
4945: 1;
4946: __END__
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