File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.400:
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select for diffs
Sat Apr 11 01:11:02 2009 UTC (15 years, 1 month ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Side effect of change in lonnet.pm 1.886 -- to address bug 5290 (portfolio).
- HTML parsing code is also used when uploading to DOCS.
- Need to add httpref entry for any files linked to in uploaded file (not these types of file do not appear in the course map).
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.400 2009/04/11 01:11:02 raeburn Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::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}';
556: }
557: return $currentstring;
558: }
559:
560: sub edit_controls {
561: my $result .= '
562: <form method="post">
563: <div class="LC_edit_problem_header">
564: <div class="LC_edit_problem_header_row1">'.
565: &Apache::lonxml::renderingoptions().'
566: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
567: </div>
568: <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" /></div></div>
569: </form>
570: <br />';
571: return $result;
572: }
573:
574: sub end_body {
575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
576: my $currentstring = &end_p(); # Close off unclosed <p>
577: if ($target eq 'web' || $target eq 'webgrade') {
578: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
579: } elsif ($target eq 'tex') {
580: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
581: }
582: return $currentstring;
583: }
584:
585: # \begin{center} causes a new paragprah spacing that looks odd inside
586: # of a table cell. Same at the end of a \center but with a slightly
587: # larger space .. hence center_correction and center_end_correction.
588: #
589: sub center_correction { return '\vspace*{-6 mm}'; }
590: sub center_end_correction { return '\vspace*{-7 mm}'; }
591:
592: #-- <center> tag (end tag required)
593: sub start_center {
594: my ($target,$token,$tagstack) = @_;
595: my $currentstring = &end_p(); # Close off any prior para.
596: if ($target eq 'web' || $target eq 'webgrade') {
597: $currentstring .= $token->[4];
598: } elsif ($target eq 'tex') {
599: if (&is_inside_of($tagstack, "table")) {
600: $currentstring .= ¢er_correction();
601: }
602: $currentstring .= '\begin{center}';
603: }
604: return $currentstring;
605: }
606:
607: sub end_center {
608: my ($target,$token,$tagstack) = @_;
609: my $currentstring = '';
610: if ($target eq 'web' || $target eq 'webgrade') {
611: $currentstring = $token->[2];
612: } elsif ($target eq 'tex') {
613: $currentstring = '\end{center}';
614: if (&is_inside_of($tagstack, "table")) {
615: $currentstring .= ¢er_end_correction();
616: }
617: }
618: return $currentstring;
619: }
620:
621: #-- <b> tag (end tag required)
622: # NOTE: In TeX mode disables internal <p>
623: sub start_b {
624: my ($target,$token) = @_;
625: my $currentstring = '';
626: if ($target eq 'web' || $target eq 'webgrade') {
627: $currentstring = $token->[4];
628: } elsif ($target eq 'tex') {
629: &disable_para();
630: $currentstring .= '\textbf{';
631: }
632: return $currentstring;
633: }
634:
635: sub end_b {
636: my ($target,$token) = @_;
637: my $currentstring = '';
638: if ($target eq 'web' || $target eq 'webgrade') {
639: $currentstring = $token->[2];
640: } elsif ($target eq 'tex') {
641: &enable_para();
642: $currentstring = '}';
643: }
644: return $currentstring;
645: }
646:
647: #-- <strong> tag (end tag required)
648: # NOTE: in TeX mode disables internal <p>
649: sub start_strong {
650: my ($target,$token) = @_;
651: my $currentstring = '';
652: if ($target eq 'web' || $target eq 'webgrade') {
653: $currentstring = $token->[4];
654: } elsif ($target eq 'tex') {
655: &disable_para();
656: $currentstring = '\textbf{';
657: }
658: return $currentstring;
659: }
660:
661: sub end_strong {
662: my ($target,$token) = @_;
663: my $currentstring = '';
664: if ($target eq 'web' || $target eq 'webgrade') {
665: $currentstring = $token->[2];
666: } elsif ($target eq 'tex') {
667: &enable_para();
668: $currentstring = '}';
669: }
670: return $currentstring;
671: }
672:
673: #-- <h1> tag (end tag required)
674: sub start_h1 {
675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
676: my $currentstring = &end_p(); # Close off any prior para.
677: if ($target eq 'web' || $target eq 'webgrade') {
678: $currentstring .= $token->[4];
679: } elsif ($target eq 'tex') {
680: my $pre;
681: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
682: if ($align eq 'center') {
683: $pre='\begin{center}';
684: } elsif ($align eq 'left') {
685: $pre='\rlap{';
686: } elsif ($align eq 'right') {
687: $pre=' \hfill \llap{';
688: }
689: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
690: if (not defined $TeXsize) {$TeXsize="large";}
691: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
692: } elsif ($target eq 'meta') {
693: $currentstring.='<subject>';
694: &start_output($target);
695: }
696: return $currentstring;
697: }
698:
699: sub end_h1 {
700: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
701: my $currentstring = '';
702: if ($target eq 'web' || $target eq 'webgrade') {
703: $currentstring .= $token->[2];
704: } elsif ($target eq 'tex') {
705: my $post='\vskip 0 mm ';
706: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
707: if ($align eq 'center') {
708: $post='\end{center}';
709: } elsif ($align eq 'left') {
710: $post='} \hfill'.'\vskip 0 mm ';
711: } elsif ($align eq 'right') {
712: $post='}'.'\vskip 0 mm ';
713: }
714: $currentstring .= '}}'.$post;
715: } elsif ($target eq 'meta') {
716: &end_output($target);
717: $currentstring='</subject>';
718: }
719: return $currentstring;
720: }
721:
722: #-- <h2> tag
723: sub start_h2 {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
725: my $currentstring = &end_p(); # Close off any prior para.
726: if ($target eq 'web' || $target eq 'webgrade') {
727: $currentstring .= $token->[4];
728: } elsif ($target eq 'tex') {
729: my $pre;
730: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
731: if ($align eq 'center') {
732: $pre='\begin{center}';
733: } elsif ($align eq 'left') {
734: $pre='\rlap{';
735: } elsif ($align eq 'right') {
736: $pre=' \hfill \llap{';
737: }
738: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
739: if (not defined $TeXsize) {$TeXsize="large";}
740: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
741: }
742: return $currentstring;
743: }
744:
745: sub end_h2 {
746: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
747: my $currentstring = '';
748: if ($target eq 'web' || $target eq 'webgrade') {
749: $currentstring .= $token->[2];
750: } elsif ($target eq 'tex') {
751: my $post='\vskip 0 mm ';
752: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
753: if ($align eq 'center') {
754: $post='\end{center}';
755: } elsif ($align eq 'left') {
756: $post='} \hfill'.'\vskip 0 mm ';
757: } elsif ($align eq 'right') {
758: $post='}'.'\vskip 0 mm ';
759: }
760: $currentstring .= '}}'.$post;
761: }
762: return $currentstring;
763: }
764:
765: #-- <h3> tag
766: sub start_h3 {
767: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
768: my $currentstring = &end_p(); # Close off any prior para.
769: if ($target eq 'web' || $target eq 'webgrade') {
770: $currentstring .= $token->[4];
771: } elsif ($target eq 'tex') {
772: my $pre;
773: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
774: if ($align eq 'center') {
775: $pre='\begin{center}';
776: } elsif ($align eq 'left') {
777: $pre='\rlap{';
778: } elsif ($align eq 'right') {
779: $pre=' \hfill \llap{';
780: }
781: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
782: if (not defined $TeXsize) {$TeXsize="large";}
783: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
784: }
785: return $currentstring;
786: }
787:
788: sub end_h3 {
789: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
790: my $currentstring = '';
791: if ($target eq 'web' || $target eq 'webgrade') {
792: $currentstring .= $token->[2];
793: } elsif ($target eq 'tex') {
794: my $post='\vskip 0 mm ';
795: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
796: if ($align eq 'center') {
797: $post='\end{center}';
798: } elsif ($align eq 'left') {
799: $post='} \hfill'.'\vskip 0 mm ';
800: } elsif ($align eq 'right') {
801: $post='}'.'\vskip 0 mm ';
802: }
803: $currentstring .= '}}'.$post;
804: }
805: return $currentstring;
806: }
807:
808: #-- <h4> tag
809: sub start_h4 {
810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
811: my $currentstring = &end_p(); # Close off any prior para.
812: if ($target eq 'web' || $target eq 'webgrade') {
813: $currentstring .= $token->[4];
814: } elsif ($target eq 'tex') {
815: my $pre;
816: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
817: if ($align eq 'center') {
818: $pre='\begin{center}';
819: } elsif ($align eq 'left') {
820: $pre='\rlap{';
821: } elsif ($align eq 'right') {
822: $pre=' \hfill \llap{';
823: }
824: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
825: if (not defined $TeXsize) {$TeXsize="large";}
826: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
827: }
828: return $currentstring;
829: }
830:
831: sub end_h4 {
832: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
833: my $currentstring = '';
834: if ($target eq 'web' || $target eq 'webgrade') {
835: $currentstring .= $token->[2];
836: } elsif ($target eq 'tex') {
837: my $post='\vskip 0 mm ';
838: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
839: if ($align eq 'center') {
840: $post='\end{center}';
841: } elsif ($align eq 'left') {
842: $post='} \hfill'.'\vskip 0 mm ';
843: } elsif ($align eq 'right') {
844: $post='}'.'\vskip 0 mm ';
845: }
846: $currentstring .= '}}'.$post;
847: }
848: return $currentstring;
849: }
850:
851: #-- <h5> tag
852: sub start_h5 {
853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
854: my $currentstring = &end_p(); # Close off any prior paras.
855: if ($target eq 'web' || $target eq 'webgrade') {
856: $currentstring .= $token->[4];
857: } elsif ($target eq 'tex') {
858: my $pre;
859: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
860: if ($align eq 'center') {
861: $pre='\begin{center}';
862: } elsif ($align eq 'left') {
863: $pre='\rlap{';
864: } elsif ($align eq 'right') {
865: $pre=' \hfill \llap{';
866: }
867: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
868: if (not defined $TeXsize) {$TeXsize="large";}
869: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
870: }
871: return $currentstring;
872: }
873:
874: sub end_h5 {
875: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
876: my $currentstring = '';
877: if ($target eq 'web' || $target eq 'webgrade') {
878: $currentstring .= $token->[2];
879: } elsif ($target eq 'tex') {
880: my $post='\vskip 0 mm ';
881: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
882: if ($align eq 'center') {
883: $post='\end{center}';
884: } elsif ($align eq 'left') {
885: $post='} \hfill'.'\vskip 0 mm ';
886: } elsif ($align eq 'right') {
887: $post='}'.'\vskip 0 mm ';
888: }
889: $currentstring .= '}}'.$post;
890: }
891: return $currentstring;
892: }
893:
894: #-- <h6> tag
895: sub start_h6 {
896: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
897: my $currentstring = &end_p(); # Close off any prior paras.
898: if ($target eq 'web' || $target eq 'webgrade') {
899: $currentstring .= $token->[4];
900: } elsif ($target eq 'tex') {
901: my $pre;
902: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
903: if ($align eq 'center') {
904: $pre='\begin{center}';
905: } elsif ($align eq 'left') {
906: $pre='\rlap{';
907: } elsif ($align eq 'right') {
908: $pre=' \hfill \llap{';
909: }
910: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
911: if (not defined $TeXsize) {$TeXsize="large";}
912: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
913: }
914: return $currentstring;
915: }
916:
917: sub end_h6 {
918: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
919: my $currentstring = '';
920: if ($target eq 'web' || $target eq 'webgrade') {
921: $currentstring .= $token->[2];
922: } elsif ($target eq 'tex') {
923: my $post='\vskip 0 mm ';
924: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
925: if ($align eq 'center') {
926: $post='\end{center}';
927: } elsif ($align eq 'left') {
928: $post='} \hfill'.'\vskip 0 mm ';
929: } elsif ($align eq 'right') {
930: $post='}'.'\vskip 0 mm ';
931: }
932: $currentstring .= '}}'.$post;
933: }
934: return $currentstring;
935: }
936:
937: #--- <cite> tag (end tag required)
938: sub start_cite {
939: my ($target,$token) = @_;
940: my $currentstring = '';
941: if ($target eq 'web' || $target eq 'webgrade') {
942: $currentstring .= $token->[4];
943: } elsif ($target eq 'tex') {
944: $currentstring .= '\textit{';
945: }
946: return $currentstring;
947: }
948:
949: sub end_cite {
950: my ($target,$token) = @_;
951: my $currentstring = '';
952: if ($target eq 'web' || $target eq 'webgrade') {
953: $currentstring .= $token->[2];
954: } elsif ($target eq 'tex') {
955: $currentstring .= '}';
956: }
957: return $currentstring;
958: }
959:
960: #-- <i> tag (end tag required)
961: sub start_i {
962: my ($target,$token) = @_;
963: my $currentstring = '';
964: if ($target eq 'web' || $target eq 'webgrade') {
965: $currentstring .= $token->[4];
966: } elsif ($target eq 'tex') {
967: $currentstring .= '\textit{';
968: }
969: return $currentstring;
970: }
971:
972: sub end_i {
973: my ($target,$token) = @_;
974: my $currentstring = '';
975: if ($target eq 'web' || $target eq 'webgrade') {
976: $currentstring .= $token->[2];
977: } elsif ($target eq 'tex') {
978: $currentstring .= '}';
979: }
980: return $currentstring;
981: }
982:
983: #-- <address> tag (end tag required)
984: sub start_address {
985: my ($target,$token) = @_;
986: my $currentstring = '';
987: if ($target eq 'web' || $target eq 'webgrade') {
988: $currentstring .= $token->[4];
989: } elsif ($target eq 'tex') {
990: $currentstring .= '\textit{';
991: }
992: return $currentstring;
993: }
994:
995: sub end_address {
996: my ($target,$token) = @_;
997: my $currentstring = '';
998: if ($target eq 'web' || $target eq 'webgrade') {
999: $currentstring .= $token->[2];
1000: } elsif ($target eq 'tex') {
1001: $currentstring .= '}';
1002: }
1003: return $currentstring;
1004: }
1005:
1006: #-- <dfn> tag (end tag required)
1007: sub start_dfn {
1008: my ($target,$token) = @_;
1009: my $currentstring = '';
1010: if ($target eq 'web' || $target eq 'webgrade') {
1011: $currentstring .= $token->[4];
1012: } elsif ($target eq 'tex') {
1013: $currentstring .= '\textit{';
1014: }
1015: return $currentstring;
1016: }
1017:
1018: sub end_dfn {
1019: my ($target,$token) = @_;
1020: my $currentstring = '';
1021: if ($target eq 'web' || $target eq 'webgrade') {
1022: $currentstring .= $token->[2];
1023: } elsif ($target eq 'tex') {
1024: $currentstring .= '}';
1025: }
1026: return $currentstring;
1027: }
1028:
1029: #-- <tt> tag (end tag required)
1030: sub start_tt {
1031: my ($target,$token) = @_;
1032: my $currentstring = '';
1033: if ($target eq 'web' || $target eq 'webgrade') {
1034: $currentstring .= $token->[4];
1035: } elsif ($target eq 'tex') {
1036: $currentstring .= '\texttt{';
1037: }
1038: return $currentstring;
1039: }
1040:
1041: sub end_tt {
1042: my ($target,$token) = @_;
1043: my $currentstring = '';
1044: if ($target eq 'web' || $target eq 'webgrade') {
1045: $currentstring .= $token->[2];
1046: } elsif ($target eq 'tex') {
1047: $currentstring .= '}';
1048: }
1049: return $currentstring;
1050: }
1051:
1052: #-- <kbd> tag (end tag required)
1053: sub start_kbd {
1054: my ($target,$token) = @_;
1055: my $currentstring = '';
1056: if ($target eq 'web' || $target eq 'webgrade') {
1057: $currentstring .= $token->[4];
1058: } elsif ($target eq 'tex') {
1059: $currentstring .= '\texttt{';
1060: }
1061: return $currentstring;
1062: }
1063:
1064: sub end_kbd {
1065: my ($target,$token) = @_;
1066: my $currentstring = '';
1067: if ($target eq 'web' || $target eq 'webgrade') {
1068: $currentstring .= $token->[2];
1069: } elsif ($target eq 'tex') {
1070: $currentstring .= '}';
1071: }
1072: return $currentstring;
1073: }
1074:
1075: #-- <code> tag (end tag required)
1076: sub start_code {
1077: my ($target,$token) = @_;
1078: my $currentstring = '';
1079: if ($target eq 'web' || $target eq 'webgrade') {
1080: $currentstring .= $token->[4];
1081: } elsif ($target eq 'tex') {
1082: $currentstring .= '\texttt{';
1083: }
1084: return $currentstring;
1085: }
1086:
1087: sub end_code {
1088: my ($target,$token) = @_;
1089: my $currentstring = '';
1090: if ($target eq 'web' || $target eq 'webgrade') {
1091: $currentstring .= $token->[2];
1092: } elsif ($target eq 'tex') {
1093: $currentstring .= '}';
1094: }
1095: return $currentstring;
1096: }
1097:
1098: #-- <em> tag (end tag required)
1099: sub start_em {
1100: my ($target,$token) = @_;
1101: my $currentstring = '';
1102: if ($target eq 'web' || $target eq 'webgrade') {
1103: $currentstring .= $token->[4];
1104: } elsif ($target eq 'tex') {
1105: $currentstring .= '\emph{';
1106: }
1107: return $currentstring;
1108: }
1109:
1110: sub end_em {
1111: my ($target,$token) = @_;
1112: my $currentstring = '';
1113: if ($target eq 'web' || $target eq 'webgrade') {
1114: $currentstring .= $token->[2];
1115: } elsif ($target eq 'tex') {
1116: $currentstring .= '}';
1117: }
1118: return $currentstring;
1119: }
1120:
1121: #-- <q> tag (end tag required)
1122: sub start_q {
1123: my ($target,$token) = @_;
1124: my $currentstring = '';
1125: if ($target eq 'web' || $target eq 'webgrade') {
1126: $currentstring .= $token->[4];
1127: } elsif ($target eq 'tex') {
1128: $currentstring .= '\emph{';
1129: }
1130: return $currentstring;
1131: }
1132:
1133: sub end_q {
1134: my ($target,$token) = @_;
1135: my $currentstring = '';
1136: if ($target eq 'web' || $target eq 'webgrade') {
1137: $currentstring .= $token->[2];
1138: } elsif ($target eq 'tex') {
1139: $currentstring .= '}';
1140: }
1141: return $currentstring;
1142: }
1143:
1144: # <p> is a bit strange since it does not require a closing </p>
1145: # However in latex, we must often output closing stuff to end
1146: # environments and {}'s etc. Therefore we do all the work
1147: # of figuring out the ending strings in the start tag processing,
1148: # and provide a mechanism to output the stop text external
1149: # to tag processing.
1150: #
1151: {
1152:
1153: my $closing_string = ''; # String required to close <p>
1154:
1155: # Some tags are <p> fragile meaning that <p> inside of them
1156: # does not work within TeX mode. This is managed via the
1157: # counter below:
1158: #
1159:
1160: my $para_disabled = 0;
1161:
1162: sub disable_para {
1163: $para_disabled++;
1164: }
1165: sub enable_para {
1166: $para_disabled--;
1167: }
1168:
1169:
1170: #-- <p> tag (end tag optional)
1171: #optional attribute - align="center|left|right"
1172: sub start_p {
1173: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1174: my $currentstring = '';
1175: if ($target eq 'web' || $target eq 'webgrade') {
1176: $currentstring .= &end_p(); # close off prior para if in progress.
1177: $currentstring .= $token->[4];
1178: if (! ($currentstring =~ /\//)) {
1179: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1180: }
1181: } elsif ($target eq 'tex' && !$para_disabled) {
1182:
1183: $currentstring .= &end_p(); # close off prior para if in progress.
1184: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1185: if ($align eq 'center') {
1186: $currentstring .='\begin{center}\par ';
1187: $closing_string = '\end{center}';
1188: if (&is_inside_of($tagstack, "table")) {
1189: $currentstring = ¢er_correction().$currentstring;
1190: }
1191: } elsif ($align eq 'right') {
1192: $currentstring.="\n".'{\flushright ';
1193: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1194: $closing_string= "}\n";
1195: } elsif ($align eq 'left') {
1196: $currentstring.= "\n".'{\flushleft ';
1197: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1198: $closing_string = "}\n";
1199: } else {
1200: $currentstring.='\par ';
1201: if (&is_inside_of($tagstack, 'table')) {
1202: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1203: } else {
1204: $closing_string = '\strut\\\\\strut ';
1205: }
1206: }
1207:
1208: }
1209: return $currentstring;
1210: }
1211: #
1212: # End paragraph processing just requires that we output the
1213: # closing string that was saved and blank it.
1214: sub end_p {
1215: # Note only 'tex' mode uses disable_para and enable_para
1216: # so we don't need to know the target in the check below:
1217:
1218: if (!$para_disabled) {
1219: my $current_string = $closing_string;
1220: $closing_string = ''; # Not in a para anymore.
1221: return $current_string;
1222: } else {
1223: return '';
1224: }
1225:
1226: }
1227: }
1228: #-- <br> tag (end tag forbidden)
1229: sub start_br {
1230: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1231: my $currentstring = '';
1232: if ($target eq 'web' || $target eq 'webgrade') {
1233: $currentstring .= $token->[4];
1234: } elsif ($target eq 'tex') {
1235: my @tempo=@$tagstack;
1236: my $signal=0;
1237: # Not going to factor this to is_inside_of since that would require
1238: # multiple stack traversals.
1239: #
1240: for (my $i=$#tempo;$i>=0;$i--) {
1241: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1242: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1243: $signal=1;
1244: }
1245: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1246: $signal = 1;
1247: }
1248: }
1249: if ($signal != 1) {
1250: $currentstring .= '\strut \\\\ \strut ';
1251: }
1252:
1253: }
1254: return $currentstring;
1255: }
1256:
1257: sub end_br {
1258: my ($target,$token) = @_;
1259: my $currentstring = '';
1260: if ($target eq 'web' || $target eq 'webgrade') {
1261: $currentstring .= $token->[2];
1262: }
1263: return $currentstring;
1264: }
1265:
1266: #-- <big> tag (end tag required)
1267: sub start_big {
1268: my ($target,$token) = @_;
1269: my $currentstring = '';
1270: if ($target eq 'web' || $target eq 'webgrade') {
1271: $currentstring .= $token->[4];
1272: } elsif ($target eq 'tex') {
1273: $currentstring .= '{\large ';
1274: }
1275: return $currentstring;
1276: }
1277:
1278: sub end_big {
1279: my ($target,$token) = @_;
1280: my $currentstring = '';
1281: if ($target eq 'web' || $target eq 'webgrade') {
1282: $currentstring .= $token->[2];
1283: } elsif ($target eq 'tex') {
1284: $currentstring .= '}';
1285: }
1286: return $currentstring;
1287: }
1288:
1289: #-- <small> tag (end tag required)
1290: sub start_small {
1291: my ($target,$token) = @_;
1292: my $currentstring = '';
1293: if ($target eq 'web' || $target eq 'webgrade') {
1294: $currentstring .= $token->[4];
1295: } elsif ($target eq 'tex') {
1296: $currentstring .= '{\footnotesize ';
1297: }
1298: return $currentstring;
1299: }
1300:
1301: sub end_small {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web' || $target eq 'webgrade') {
1305: $currentstring .= $token->[2];
1306: } elsif ($target eq 'tex') {
1307: $currentstring .= '}';
1308: }
1309: return $currentstring;
1310: }
1311:
1312: #-- <basefont> tag (end tag forbidden)
1313: sub start_basefont {
1314: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1315: my $currentstring = '';
1316: if ($target eq 'web' || $target eq 'webgrade') {
1317: $currentstring = $token->[4];
1318: } elsif ($target eq 'tex') {
1319: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1320: if (defined $basesize) {
1321: $currentstring = '{\\'.$basesize.' ';
1322: }
1323: }
1324: return $currentstring;
1325: }
1326:
1327: sub end_basefont {
1328: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1329: my $currentstring = '';
1330: if ($target eq 'web' || $target eq 'webgrade') {
1331: $currentstring = $token->[4];
1332: } elsif ($target eq 'tex') {
1333: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1334: if (defined $basesize) {
1335: $currentstring = '}';
1336: }
1337: }
1338: return $currentstring;
1339: }
1340:
1341: #-- <font> tag (end tag required)
1342: sub start_font {
1343: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1344: my $currentstring = '';
1345: if ($target eq 'web' || $target eq 'webgrade') {
1346: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1347: if ($face!~/symbol/i) {
1348: if (($env{'browser.fontenhance'} eq 'on') ||
1349: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1350: }
1351: $currentstring = $token->[4];
1352: } elsif ($target eq 'tex') {
1353: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1354: if (defined $fontsize) {
1355: $currentstring = '{\\'.$fontsize.' ';
1356: }
1357: }
1358: return $currentstring;
1359: }
1360:
1361: sub end_font {
1362: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1363: my $currentstring = '';
1364: if ($target eq 'web' || $target eq 'webgrade') {
1365: $currentstring = $token->[2];
1366: } elsif ($target eq 'tex') {
1367: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1368: if (defined $fontsize) {
1369: $currentstring = '}';
1370: }
1371: }
1372: return $currentstring;
1373: }
1374:
1375: #-- <strike> tag (end tag required)
1376: sub start_strike {
1377: my ($target,$token) = @_;
1378: my $currentstring = '';
1379: if ($target eq 'web' || $target eq 'webgrade') {
1380: $currentstring .= $token->[4];
1381: } elsif ($target eq 'tex') {
1382: &Apache::lonxml::startredirection();
1383: }
1384: return $currentstring;
1385: }
1386:
1387: sub end_strike {
1388: my ($target,$token) = @_;
1389: my $currentstring = '';
1390: if ($target eq 'web' || $target eq 'webgrade') {
1391: $currentstring .= $token->[2];
1392: } elsif ($target eq 'tex') {
1393: $currentstring=&Apache::lonxml::endredirection();
1394: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1395: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1396: $currentstring=~s/(\S)\s*$/$1\}/;
1397: }
1398: return $currentstring;
1399: }
1400:
1401: #-- <s> tag (end tag required)
1402: sub start_s {
1403: my ($target,$token) = @_;
1404: my $currentstring = '';
1405: if ($target eq 'web' || $target eq 'webgrade') {
1406: $currentstring .= $token->[4];
1407: } elsif ($target eq 'tex') {
1408: &Apache::lonxml::startredirection();
1409: }
1410: return $currentstring;
1411: }
1412:
1413: sub end_s {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web' || $target eq 'webgrade') {
1417: $currentstring .= $token->[2];
1418: } elsif ($target eq 'tex') {
1419: $currentstring=&Apache::lonxml::endredirection();
1420: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1421: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1422: $currentstring=~s/(\S)\s*$/$1\}/;
1423: }
1424: return $currentstring;
1425: }
1426:
1427: #-- <sub> tag (end tag required)
1428: sub start_sub {
1429: my ($target,$token) = @_;
1430: my $currentstring = '';
1431: if ($target eq 'web' || $target eq 'webgrade') {
1432: $currentstring .= $token->[4];
1433: } elsif ($target eq 'tex') {
1434: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1435: }
1436: return $currentstring;
1437: }
1438:
1439: sub end_sub {
1440: my ($target,$token) = @_;
1441: my $currentstring = '';
1442: if ($target eq 'web' || $target eq 'webgrade') {
1443: $currentstring .= $token->[2];
1444: } elsif ($target eq 'tex') {
1445: $currentstring .= '}}';
1446: }
1447: return $currentstring;
1448: }
1449:
1450: #-- <sup> tag (end tag required)
1451: sub start_sup {
1452: my ($target,$token) = @_;
1453: my $currentstring = '';
1454: if ($target eq 'web' || $target eq 'webgrade') {
1455: $currentstring .= $token->[4];
1456: } elsif ($target eq 'tex') {
1457: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1458: }
1459: return $currentstring;
1460: }
1461:
1462: sub end_sup {
1463: my ($target,$token) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web' || $target eq 'webgrade') {
1466: $currentstring .= $token->[2];
1467: } elsif ($target eq 'tex') {
1468: $currentstring .= '}}';
1469: }
1470: return $currentstring;
1471: }
1472:
1473: #-- <hr> tag (end tag forbidden)
1474: sub start_hr {
1475: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1476: my $currentstring = &end_p(); # End enclosing para.
1477: if ($target eq 'web' || $target eq 'webgrade') {
1478: $currentstring .= $token->[4];
1479: } elsif ($target eq 'tex') {
1480:
1481: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1482: #
1483: my $restart_sub = 0;
1484: my $restart_sup = 0;
1485:
1486: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1487: # using the start_ stop_ functions.. those tags only care about
1488: # $target.
1489:
1490: if (&is_inside_of($tagstack, "sub")) {
1491: $restart_sub = 1;
1492: $currentstring .= &end_sub($target, $token, $tagstack,
1493: $parstack, $parser, $safeeval);
1494: }
1495: if (&is_inside_of($tagstack, "sup")) {
1496: $restart_sup = 1;
1497: $currentstring .= &end_sup($target, $token, $tagstack,
1498: $parstack, $parser, $safeeval);
1499: }
1500:
1501: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1502: if (defined $LaTeXwidth) {
1503: if ($LaTeXwidth=~/^%/) {
1504: substr($LaTeXwidth,0,1)='';
1505: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1506: }
1507: } else {
1508: $LaTeXwidth ='0.9\textwidth';
1509: }
1510: my ($pre,$post);
1511: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1512: if (($align eq 'center') || (not defined $align)) {
1513: $pre=''; $post='';
1514: } elsif ($align eq 'left') {
1515: $pre='\rlap{'; $post='} \hfill';
1516: } elsif ($align eq 'right') {
1517: $pre=' \hfill \llap{'; $post='}';
1518: }
1519: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1520: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1521: # Turn stuff back on that we can't be inside of.
1522:
1523: if ($restart_sub) {
1524: $currentstring .= &start_sub($target, $token, $tagstack,
1525: $parstack, $parser, $safeeval);
1526: }
1527: if ($restart_sup) {
1528: $currentstring .= &start_sup($target, $token, $tagstack,
1529: $parstack, $parser, $safeeval);
1530: }
1531: }
1532: return $currentstring;
1533: }
1534:
1535: sub end_hr {
1536: my ($target,$token) = @_;
1537: my $currentstring = '';
1538: if ($target eq 'web' || $target eq 'webgrade') {
1539: $currentstring .= $token->[2];
1540: }
1541: return $currentstring;
1542: }
1543:
1544: #-- <div> tag (end tag required)
1545: {
1546:
1547: # Since div can be nested, the stack below is used
1548: # in 'tex' mode to store the ending strings
1549: # for the div stack.
1550:
1551: my @div_end_stack;
1552:
1553: sub start_div {
1554: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1555: my $currentstring = &end_p(); # Close enclosing para.
1556: if ($target eq 'web' || $target eq 'webgrade') {
1557: $currentstring .= $token->[4];
1558: }
1559: if ($target eq 'tex') {
1560: # 4 possible alignments: left, right, center, and -missing-.
1561: # If inside a table row, we must let the table logic
1562: # do the alignment, however.
1563: #
1564:
1565: my $endstring = '';
1566:
1567: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1568: $safeeval, undef, 1));
1569: if ($align eq 'center') {
1570: $currentstring .= '\begin{center}';
1571: $endstring = '\end{center}';
1572: if (&is_inside_of($tagstack, "table")) {
1573: $currentstring = ¢er_correction().$currentstring;
1574: $endstring .= ¢er_end_correction();
1575: }
1576: }
1577: elsif ($align eq 'right') {
1578: $currentstring .= '\begin{flushright}';
1579: $endstring .= '\end{flushright}';
1580: } elsif ($align eq 'left') {
1581: $currentstring .= '\begin{flushleft}';
1582: $endstring = '\end{flushleft}';
1583: } else {
1584:
1585: }
1586: $currentstring .= "\n"; # For human readability.
1587: $endstring = "\n$endstring\n"; # For human readability
1588: push(@div_end_stack, $endstring);
1589: }
1590: return $currentstring;
1591: }
1592:
1593: sub end_div {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web' || $target eq 'webgrade') {
1597: $currentstring .= $token->[2];
1598: }
1599: if ($target eq 'tex') {
1600: my $endstring = pop @div_end_stack;
1601: $currentstring .= $endstring;
1602: }
1603: return $currentstring;
1604: }
1605: }
1606:
1607: #-- <a> tag (end tag required)
1608: sub start_a {
1609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1610: my $currentstring = '';
1611: if ($target eq 'web' || $target eq 'webgrade') {
1612: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1613: undef,1);
1614: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1615: if ($href =~ /\S/) {
1616: if ($href !~ m{^https?://}) {
1617: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1618: my $linkurl;
1619: if ($href =~ m{^/uploaded/}) {
1620: $linkurl = $href;
1621: } elsif ($href =~ m{^[^/]}) {
1622: my $path = $url;
1623: $path =~ s{[^/]*$}{};
1624: $linkurl = $path.$href;
1625: }
1626: if ($linkurl =~ m{^/uploaded/}) {
1627: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1628: if (&Apache::lonnet::is_on_map($url)) {
1629: &Apache::lonxml::extlink($linkurl);
1630: }
1631: }
1632: }
1633: }
1634: }
1635: }
1636: return $currentstring;
1637: }
1638:
1639: sub end_a {
1640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1641: my $currentstring = '';
1642: if ($target eq 'web' || $target eq 'webgrade') {
1643: $currentstring .= $token->[2];
1644: }
1645: if ($target eq 'tex') {
1646: my $href =
1647: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1648: my $name =
1649: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1650: my $uriprint =
1651: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1652: my $anchorprint =
1653: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1654: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1655: $href =~ s/([^\\])%/$1\\\%/g;
1656: # Substitute special symbols... and allow line breaks at each /
1657: #
1658: $href = &Apache::lonxml::latex_special_symbols($href);
1659: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1660: $currentstring .= ' ({\tt URI:'.$href.'})';
1661: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1662: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1663: } else {
1664: $currentstring.='';
1665: }
1666: }
1667: return $currentstring;
1668: }
1669:
1670: #-- <li> tag (end tag optional)
1671: sub start_li {
1672: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1673: my $currentstring = '';
1674: if ($target eq 'web' || $target eq 'webgrade') {
1675: $currentstring = $token->[4];
1676: } elsif ($target eq 'tex') {
1677: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1678: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1679: #FIXME need to support types i and I
1680: if ($type=~/disc/) {
1681: $currentstring .= ' \item[$\bullet$] ';
1682: } elsif ($type=~/circle/) {
1683: $currentstring .= ' \item[$\circ$] ';
1684: } elsif ($type=~/square/) {
1685: $currentstring .= ' \item[$\diamond$] ';
1686: } elsif ($type eq '1') {
1687: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1688: } elsif ($type eq 'A') {
1689: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1690: } elsif ($type eq 'a') {
1691: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1692: } elsif ($value ne '') {
1693: $currentstring .= ' \item['.$value.'] ';
1694: } else {
1695: $currentstring .= ' \item ';
1696: }
1697: $Apache::londefdef::list_index++;
1698: }
1699: return $currentstring;
1700: }
1701:
1702: sub end_li {
1703: my ($target,$token) = @_;
1704: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1705: if ($target eq 'web' || $target eq 'webgrade') {
1706: $currentstring .= $token->[2];
1707: }
1708: return $currentstring;
1709: }
1710:
1711: #-- <u> tag (end tag required)
1712: sub start_u {
1713: my ($target,$token) = @_;
1714: my $currentstring = '';
1715: if ($target eq 'web' || $target eq 'webgrade') {
1716: $currentstring .= $token->[4];
1717: } elsif ($target eq 'tex') {
1718: &Apache::lonxml::startredirection();
1719: }
1720: return $currentstring;
1721: }
1722:
1723: sub end_u {
1724: my ($target,$token) = @_;
1725: my $currentstring = '';
1726: if ($target eq 'web' || $target eq 'webgrade') {
1727: $currentstring .= $token->[2];
1728: } elsif ($target eq 'tex') {
1729: $currentstring=&Apache::lonxml::endredirection();
1730: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1731: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1732: $currentstring=~s/(\S)\s*$/$1\}/;
1733: }
1734: return $currentstring;
1735: }
1736:
1737: #-- <ul> tag (end tag required)
1738: sub start_ul {
1739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1740: my $currentstring = &end_p(); # Close off enclosing list.
1741: if ($target eq 'web' || $target eq 'webgrade') {
1742: $currentstring .= $token->[4];
1743: } elsif ($target eq 'tex') {
1744: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1745: $Apache::londefdef::list_index=0;
1746: if ($TeXtype eq 'disc') {
1747: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1748: '\renewcommand{\labelitemii}{$\bullet$}'.
1749: '\renewcommand{\labelitemiii}{$\bullet$}'.
1750: '\renewcommand{\labelitemiv}{$\bullet$}';
1751: } elsif ($TeXtype eq 'circle') {
1752: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1753: '\renewcommand{\labelitemii}{$\circ$}'.
1754: '\renewcommand{\labelitemiii}{$\circ$}'.
1755: '\renewcommand{\labelitemiv}{$\circ$}';
1756: } elsif ($TeXtype eq 'square') {
1757: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1758: '\renewcommand{\labelitemii}{$\diamond$}'.
1759: '\renewcommand{\labelitemiii}{$\diamond$}'.
1760: '\renewcommand{\labelitemiv}{$\diamond$}';
1761: }
1762: $currentstring .= '\strut \begin{itemize}';
1763: }
1764: return $currentstring;
1765: }
1766:
1767: sub end_ul {
1768: my ($target,$token) = @_;
1769: my $currentstring = '';
1770: if ($target eq 'web' || $target eq 'webgrade') {
1771: $currentstring = $token->[2];
1772: } elsif ($target eq 'tex') {
1773: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1774: '\renewcommand{\labelitemii}{$\bullet$}'.
1775: '\renewcommand{\labelitemiii}{$\bullet$}'.
1776: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1777: }
1778: return $currentstring;
1779: }
1780:
1781: #-- <menu> tag (end tag required)
1782: sub start_menu {
1783: my ($target,$token) = @_;
1784: my $currentstring = '';
1785: if ($target eq 'web' || $target eq 'webgrade') {
1786: $currentstring = $token->[4];
1787: } elsif ($target eq 'tex') {
1788: $currentstring = " \\begin{itemize} ";
1789: }
1790: return $currentstring;
1791: }
1792:
1793: sub end_menu {
1794: my ($target,$token) = @_;
1795: my $currentstring = '';
1796: if ($target eq 'web' || $target eq 'webgrade') {
1797: $currentstring = $token->[2];
1798: } elsif ($target eq 'tex') {
1799: $currentstring = " \\end{itemize}";
1800: }
1801: return $currentstring;
1802: }
1803:
1804: #-- <dir> tag (end tag required)
1805: sub start_dir {
1806: my ($target,$token) = @_;
1807: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1808: if ($target eq 'web' || $target eq 'webgrade') {
1809: $currentstring .= $token->[4];
1810: } elsif ($target eq 'tex') {
1811: $currentstring .= " \\begin{itemize} ";
1812: }
1813: return $currentstring;
1814: }
1815:
1816: sub end_dir {
1817: my ($target,$token) = @_;
1818: my $currentstring = '';
1819: if ($target eq 'web' || $target eq 'webgrade') {
1820: $currentstring = $token->[2];
1821: } elsif ($target eq 'tex') {
1822: $currentstring = " \\end{itemize}";
1823: }
1824: return $currentstring;
1825: }
1826:
1827: #-- <ol> tag (end tag required)
1828: sub start_ol {
1829: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1830: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1831: if ($target eq 'web' || $target eq 'webgrade') {
1832: $currentstring .= $token->[4];
1833: } elsif ($target eq 'tex') {
1834: $Apache::londefdef::list_index=0;
1835: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1836: if ($type eq '1') {
1837: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1838: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1839: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1840: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1841: } elsif ($type eq 'A') {
1842: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1843: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1844: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1845: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1846: } elsif ($type eq 'a') {
1847: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1848: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1849: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1850: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1851: } elsif ($type eq 'i') {
1852: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1853: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1854: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1855: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1856: } elsif ($type eq 'I') {
1857: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1858: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1859: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1860: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1861: }
1862: $currentstring .= '\strut \begin{enumerate}';
1863: }
1864: return $currentstring;
1865: }
1866:
1867: sub end_ol {
1868: my ($target,$token) = @_;
1869: my $currentstring = '';
1870: if ($target eq 'web' || $target eq 'webgrade') {
1871: $currentstring = $token->[2];
1872: } elsif ($target eq 'tex') {
1873: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1874: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1875: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1876: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1877: }
1878: return $currentstring;
1879: }
1880:
1881: #-- <dl> tag (end tag required)
1882: sub start_dl {
1883: my ($target,$token) = @_;
1884: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1885: if ($target eq 'web' || $target eq 'webgrade') {
1886: $currentstring .= $token->[4];
1887: } elsif ($target eq 'tex') {
1888: $currentstring .= '\begin{description}';
1889: $Apache::londefdef::DL++;
1890: push(@Apache::londefdef::description,[]);
1891: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1892: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1893: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1894: }
1895: return $currentstring;
1896: }
1897:
1898: sub end_dl {
1899: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1900: my $currentstring = '';
1901: if ($target eq 'web' || $target eq 'webgrade') {
1902: $currentstring = $token->[2];
1903: } elsif ($target eq 'tex') {
1904: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1905: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1906: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1907: $currentstring.=' '.$element.' ';
1908: }
1909: pop(@Apache::londefdef::description);
1910: $currentstring.='\end{description}';
1911: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1912: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1913: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1914: $Apache::londefdef::DL--;
1915: }
1916: return $currentstring;
1917: }
1918:
1919: #-- <dt> tag (end tag optional)
1920: sub start_dt {
1921: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1922: my $currentstring='';
1923: if ($target eq 'web' || $target eq 'webgrade') {
1924: $currentstring = $token->[4];
1925: } elsif ($target eq 'tex') {
1926: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1927: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1928: &Apache::lonxml::startredirection();
1929: $Apache::londefdef::DT[-1]++;
1930: $Apache::londefdef::seenDT[-1]=1;
1931: }
1932: return $currentstring;
1933: }
1934:
1935: sub end_dt {
1936: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1937: my $currentstring = '';
1938: if ($target eq 'web' || $target eq 'webgrade') {
1939: $currentstring = $token->[2];
1940: } elsif ($target eq 'tex') {
1941: if ($Apache::londefdef::DT[-1]) {
1942: my $data=&item_cleanup();
1943: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1944: $Apache::londefdef::DT[-1]--;
1945: }
1946: }
1947: return $currentstring;
1948: }
1949:
1950: sub item_cleanup {
1951: my $item=&Apache::lonxml::endredirection();
1952: $item=~s/\\begin{center}//g;
1953: $item=~s/\\end{center}//g;
1954: return $item;
1955: }
1956:
1957: #-- <dd> tag (end tag optional)
1958: sub start_dd {
1959: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1960: my $currentstring = '';
1961: if ($target eq 'web' || $target eq 'webgrade') {
1962: $currentstring = $token->[4];
1963: } elsif ($target eq 'tex') {
1964: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1965: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1966: if (!$Apache::londefdef::seenDT[-1]) {
1967: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1968: }
1969: push(@{$Apache::londefdef::description[-1]},'');
1970: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1971: $Apache::londefdef::DD[-1]++;
1972: &Apache::lonxml::startredirection();
1973: }
1974: return $currentstring;
1975: }
1976:
1977: sub end_dd {
1978: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1979: my $currentstring = '';
1980: if ($target eq 'web' || $target eq 'webgrade') {
1981: $currentstring = $token->[2];
1982: } elsif ($target eq 'tex') {
1983: $Apache::londefdef::description[-1]->[-1].=
1984: &Apache::lonxml::endredirection().' \vskip 0mm ';
1985: $Apache::londefdef::DD[-1]--;
1986: }
1987: return $currentstring;
1988: }
1989:
1990: #-- <table> tag (end tag required)
1991: # <table> also ends any prior <p> that is not closed.
1992: # but, unless I allow <p>'s to nest, that's the
1993: # only way I could think of to allow <p> in
1994: # <tr> <th> bodies
1995: #
1996: #list of supported attributes: border,width,TeXwidth,TeXtheme
1997: # align
1998: sub start_table {
1999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2000: my $textwidth = '';
2001: my $currentstring = &end_p();
2002: if ($target eq 'web' || $target eq 'webgrade') {
2003: $currentstring .= $token->[4];
2004: } elsif ($target eq 'tex') {
2005: &disable_para(); # Can't have paras in a table.
2006:
2007:
2008: # New table code:
2009:
2010: # Get the parameters that we can do something about:
2011:
2012: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2013: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2014: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2015: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2016:
2017: # The only thing that needs any figuring out is the width.. and then only if it is
2018: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2019: #
2020:
2021: my $table = new Apache::lontable();
2022: if ($border ne '') {
2023: $table->table_border(1);
2024: $table->cell_border(1);
2025: }
2026: if ($theme ne '') {
2027: $table->theme($theme);
2028: }
2029: if ($align ne '') {
2030: $table->alignment($align);
2031: }
2032:
2033: # Missing width is most of page width
2034:
2035: if ($width eq "") {
2036: $width = '70%';
2037: }
2038:
2039: # If a percentage, need to calculate what this means in terms of
2040: # page width:
2041:
2042: if ($width =~ /%$/) {
2043: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2044: $width =~ s/%//;
2045: $width = $width * $textwidth / 100.0;
2046: $width .= " mm";
2047: $table->width($width);
2048: }
2049:
2050: push(@Apache::londefdef::table, $table);
2051: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2052:
2053: #--------------------------------------------------------
2054: # Old table code here.
2055: #--------------------------------------------------------
2056:
2057:
2058: if (0) {
2059: push(@Apache::londefdef::table, {});
2060: $Apache::londefdef::table[-1]{'row_number'} = -1;
2061: #maximum table's width (default coincides with text line length)
2062: if ($#Apache::londefdef::table==0) {
2063: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2064: $textwidth=~/(\d+\.?\d*)/;
2065: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2066: } else {
2067: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2068: #the maximum width of nested table is determined by LATeX width of parent cell
2069: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2070: } else {
2071: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2072: $textwidth=$Apache::londefdef::table[-2]{'width'};
2073: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2074: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2075: }
2076: }
2077: }
2078:
2079: # width either comes forced from the TeXwidth or the width parameters.
2080: # in either case it can be a percentage or absolute width.
2081: # in the width case we ignore absolute width
2082: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2083: if (!defined($TeXwidth)) {
2084: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2085: $safeeval,undef,1);
2086: if ($htmlwidth =~ /%/) {
2087: $TeXwidth = $htmlwidth;
2088: } else {
2089: $TeXwidth = $textwidth;
2090: }
2091: }
2092: # if the width is specified as a % it is converted to an absolute width.
2093: # otherwise.. just plugged right in the hash
2094:
2095: if ($TeXwidth=~/%/) {
2096: $TeXwidth=~/(\d+)/;
2097: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2098: } else {
2099: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2100: }
2101: # In the end, however the table width cannot be wider than $textwidth...
2102:
2103: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2104: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2105: }
2106: #table's border
2107: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2108: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2109: unless (defined $border) { $border = 0; }
2110: if ($border) {
2111: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2112: $Apache::londefdef::table[-1]{'vinc'} = '&';
2113: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2114: } else {
2115: $Apache::londefdef::table[-1]{'hinc'} = '';
2116: $Apache::londefdef::table[-1]{'vinc'} = '&';
2117: $Apache::londefdef::table[-1]{'vvinc'} = '';
2118: }
2119: if ($#Apache::londefdef::table==0) {
2120: # Note that \newline seems to destroy the alignment envs.
2121: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2122: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2123: }
2124: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2125: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2126: $Apache::londefdef::table[-1]{'objectlen'}=[];
2127: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2128: $Apache::londefdef::table[-1]{'maxlen'}=[];
2129: $Apache::londefdef::table[-1]{'minlen'}=[];
2130: $Apache::londefdef::table[-1]{'content'}=[];
2131: $Apache::londefdef::table[-1]{'align'}=[];
2132: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2133: }
2134:
2135: }
2136: return $currentstring;
2137: }
2138:
2139: sub end_table {
2140: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2141: my $currentstring = '';
2142: if ($target eq 'web' || $target eq 'webgrade') {
2143: $currentstring = $token->[2];
2144: } elsif ($target eq 'tex') {
2145:
2146:
2147: # New table code:
2148:
2149: my $table = pop(@Apache::londefdef::table);
2150: my $t = $table->generate();
2151: $currentstring = $t->generate_string();
2152: &enable_para();
2153: #--------------------------------------------------------------
2154: # Old table code:
2155: #--------------------------------------------------------------
2156:
2157: if (0) {
2158:
2159: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2160: my $inmemory = '';
2161: my $output = '';
2162: my $WARNING='';
2163: #width of columns from TeXwidth attributes
2164:
2165: # Protect against unbalanced </table> tag.
2166:
2167: if (scalar(@Apache::londefdef::table) > 0) {
2168:
2169: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2170: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2171: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2172: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2173: }
2174: }
2175: }
2176: #free space and number of empty columns
2177: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2178: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2179: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2180: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2181: $empty_columns++;
2182: } else {
2183: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2184: }
2185: }
2186:
2187: #boundaries for contents columns
2188: my @min_len=();#columns can not be narrower
2189: my @max_len=();#maximum length of column
2190: my $avg_max;
2191: my $avg_min;
2192: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2193: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2194: my ($localmin,$localmax)=(0,0);
2195: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2196: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2197: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2198: }
2199: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2200: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2201: }
2202: }
2203: push @min_len, $localmin;
2204: push @max_len, $localmax;
2205: $avg_max = $localmax + $avg_max;
2206: $avg_min = $localmin + $avg_min;
2207: }
2208: # Does not really matter what the average max/min are if there are no cols.
2209: # and this prevents div 0 in that case.
2210:
2211: if ($counter_cols != 0) {
2212: $avg_max = $avg_max/$counter_cols;
2213: $avg_min = $avg_min/$counter_cols;
2214: }
2215:
2216:
2217: # I don't think the below is needed.. but just in case:
2218:
2219: if ($avg_min > $avg_max) {
2220: my $temp = $avg_min;
2221: $avg_min = $avg_max;
2222: $avg_max = $temp;
2223: }
2224:
2225:
2226: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2227: my $localmin=0,;
2228: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2229: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2230: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2231: }
2232: }
2233: if ($max_len[$jn]<$localmin) {
2234: $max_len[$jn]=$localmin;
2235: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2236: }#object size is bigger
2237: if ($min_len[$jn]<$localmin) {
2238: $min_len[$jn]=$localmin;
2239: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2240: }#object size is bigger
2241: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2242: $min_len[$jn]=0;
2243: $max_len[$jn]=0;
2244: }
2245: # Spans seem to be really bothered by max/min = 0. So if we have one
2246: # make it an average joe max/min.
2247:
2248: if ($max_len[$jn] == 0) {
2249: $max_len[$jn] = $avg_max;
2250: }
2251: if ($min_len[$jn] == 0) {
2252: $min_len[$jn] = $avg_min;
2253: }
2254:
2255: }
2256: #final adjustment of column width
2257: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2258: my @adjust=();
2259: #step 1. adjustment by maximum value
2260: my $space_needed=0;
2261: for (my $jn=0;$jn<=$#max_len;$jn++) {
2262: $space_needed=$space_needed+$max_len[$jn];
2263: }
2264: if ($space_needed<=$available_space) {
2265:
2266: for (my $jn=0;$jn<=$#max_len;$jn++) {
2267: if ($fwidth[$jn]==0) {
2268: $fwidth[$jn]=$max_len[$jn];
2269: }
2270: }
2271: } else {
2272: #step 2. adjustment by minimum value (estimation)
2273: $space_needed=0;
2274: for (my $jn=0;$jn<=$#min_len;$jn++) {
2275: $space_needed+=$min_len[$jn];
2276: }
2277: if ($space_needed>$available_space) {
2278: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2279: for (my $jn=0;$jn<=$#max_len;$jn++) {
2280: if ($fwidth[$jn]==0) {
2281: $fwidth[$jn]=$min_len[$jn];
2282: }
2283: }
2284: #check if we have objects which can be scaled
2285: my $how_many_to_scale=0;
2286: my @to_scale=();
2287: for (my $jn=0;$jn<=$#max_len;$jn++) {
2288: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2289: $how_many_to_scale++;
2290: push @to_scale, $jn;
2291: }
2292: }
2293: if ($how_many_to_scale>0) {
2294: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2295: foreach my $jn (@to_scale) {
2296: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2297: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2298: if ($1 ne '') {
2299: my $current_length=&recalc($1);
2300: $current_length=~/(\d+\.?\d*)/;
2301: $current_length=$current_length-$space_to_adjust;
2302: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2303: }
2304: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2305: if ($1 ne '') {
2306: my $current_length=$1;
2307: $current_length=$current_length-$space_to_adjust;
2308: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2309: }
2310: }
2311: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2312: }
2313: }
2314: } else {
2315: #step 3. adjustment over minimal + corrections
2316: my $enlarge_coef=$available_space/$space_needed;
2317: my $acsessive=0;
2318: for (my $jn=0;$jn<=$#min_len;$jn++) {
2319: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2320: if ($adjust[$jn]>$max_len[$jn]) {
2321: $fwidth[$jn]=$max_len[$jn];
2322: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2323: $adjust[$jn]=0;
2324:
2325: }
2326: }
2327: if ($acsessive>0) {
2328: #we have an excess of space and can redistribute it
2329: my $notempty_columns=0;
2330: for (my $jn=0;$jn<=$#min_len;$jn++) {
2331: if ($adjust[$jn]!=0) {
2332: $notempty_columns++;
2333: }
2334: }
2335: my $per_column=$acsessive/$notempty_columns;
2336: for (my $jn=0;$jn<=$#min_len;$jn++) {
2337: if ($adjust[$jn]!=0) {
2338: $adjust[$jn]+=$per_column;
2339: $fwidth[$jn]=$adjust[$jn];
2340: }
2341: }
2342: } else {
2343: for (my $jn=0;$jn<=$#min_len;$jn++) {
2344: $fwidth[$jn]=$adjust[$jn];
2345: }
2346: }
2347: }
2348: }
2349: # use all available width or specified width as if not specified,
2350: # the specified width gets defaulted to the available width.
2351:
2352: my $current=0;
2353: for (my $i=0;$i<=$#fwidth;$i++) {
2354: $current+=$fwidth[$i];
2355: }
2356: if ($current == 0) {
2357: $current = $Apache::londefdef::table[-1]{'width'};
2358: }
2359: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2360: for (my $i=0;$i<=$#fwidth;$i++) {
2361: $fwidth[$i]*=$coef;
2362: }
2363: #removing of empty columns if allowed
2364: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2365: if ($permission eq 'yes') {
2366: my @cleaned_table=();
2367: my @cleaned_header=();
2368: my $colind=0;
2369: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2370: if ($fwidth[$jn]!=0) {
2371: #we need to copy column
2372: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2373: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2374: $cleaned_header[$colind]=$fwidth[$jn];
2375: }
2376: $colind++;
2377: }
2378: }
2379: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2380: @fwidth=@cleaned_header;
2381: }
2382:
2383:
2384: #construct header of the table
2385: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2386: for (my $in=0;$in<=$#fwidth;$in++) {
2387: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2388: }
2389: $header_of_table .= '}';
2390:
2391: #fill the table
2392: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2393: my $have_rowspan = 0;
2394: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2395:
2396: #-----------------------------------------------------------
2397: # I think this order of doing things will ensure that
2398: # single rowspan, columspan and combined row/colspans will
2399: # work correctly. LaTeX is delicate here.
2400: # RF.
2401:
2402: # Start a rowspan if necessary:
2403:
2404: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2405: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2406: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2407: #
2408: # Do the appropriate magic if this has a colspan
2409: #
2410:
2411: my $border_char = "";
2412: if ($border) {
2413: $border_char = "|";
2414: }
2415: my $spanwidth = 0;
2416: if ($colspan > 1) {
2417: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2418: $spanwidth += $fwidth[$spancol];
2419: }
2420: $output .= '\multicolumn{'.
2421: $colspan
2422: ."}";
2423: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2424: $output .= '{'.$border_char.'c'.$border_char.'}{';
2425: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2426: $output .= '{'.$border_char.'r'.$border_char.'}{';
2427: }
2428: else {
2429: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2430: }
2431:
2432: } else {
2433: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2434: }
2435:
2436: # Rowspan... if colspan is 1, and there's an alignment we'll need
2437: # to kick in a multicolumn in order to get the alignment spec.
2438: # this must precede the multirow or LaTex gets quite upset.
2439: # Naturally if colspan > 1 we've already done that above ^
2440: #
2441: my $multirow_aligned = 0;
2442: if ($rowspan > 1) {
2443: if ($colspan == 1) {
2444: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2445: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2446: $multirow_aligned = 1;
2447: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2448: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2449: $multirow_aligned = 1;
2450: }
2451: }
2452: $have_rowspan++;
2453: if ($multirow_aligned) {
2454: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2455: } else {
2456: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2457: }
2458:
2459: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2460: s{^\s*\\par\s*}{};
2461: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2462: s{\s*\\vskip\s*0pt\s*$}{};
2463:
2464: #
2465: # If we did not throw in a multicolumn to align, then add
2466: # an extra {
2467: # so we close correctly without having to keep additional state
2468: # around
2469: #
2470: if (!$multirow_aligned) {
2471: $output .= '{';
2472: }
2473: }
2474: if (($rowspan eq '^') || ($rowspan eq '_')) {
2475: $have_rowspan++;
2476: }
2477: #--------------------------------------------------------------
2478:
2479:
2480: # For right and center alignment of single cells.
2481: # we are going to use a multicolumn with a span of 1 to specify alignment.
2482: #
2483: if ($colspan == 1 && $rowspan == 1) {
2484: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2485: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2486: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2487: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2488: }
2489: }
2490:
2491: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2492:
2493: if (($colspan == 1 && $rowspan == 1) &&
2494: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2495: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2496: $output .= '}';
2497: }
2498:
2499: # Close off any open multirow:
2500:
2501: if ($rowspan > 1) {
2502: $output .= '}}';
2503: }
2504: # Close off the colspan...
2505: #
2506: if ($colspan > 1) {
2507: $output .= '}';
2508: $jn += $colspan-1; # Adjust for number of rows really left.
2509: }
2510: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2511: }
2512: # If have_rowspan > 0, and borders are on, then
2513: # we need to do more than put an \hline at the bottom of row.
2514: # we need to do the appropriate \cline to ensure that
2515: # the spanned rows don't have \hlines through them.
2516:
2517: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2518: $output .= ' \\\\ ';
2519: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2520: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2521: if ($rowspan ne "^") {
2522: if (($rowspan <= 1) || ($rowspan eq '_')) {
2523: my $column = $jn+1;
2524: $output .= '\cline{'.$column.'-'.$column.'} ';
2525: }
2526: }
2527: }
2528:
2529: } else {
2530: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2531: }
2532: }
2533: # Note that \newline destroys alignment env's produced by e.g. <div>
2534: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2535: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2536: if ($#Apache::londefdef::table > 0) {
2537: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2538: # Figure out max/and min width by summing us and then
2539: # apply that to the current column of the table we nest in
2540: # if it's larger than the current width or the current width
2541: # is undefined.
2542: #
2543: my $min_nested_width = 0;
2544: my $max_nested_width = 0;
2545: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2546: $min_nested_width += $min_len[$col];
2547: $max_nested_width += $max_len[$col];
2548:
2549: }
2550: # Fudge in an extra 5 mm for borders etc:
2551:
2552: $min_nested_width += 5;
2553: $max_nested_width += 5;
2554:
2555: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2556: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2557: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2558: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2559: }
2560: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2561: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2562: }
2563:
2564: pop @Apache::londefdef::table;
2565: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2566: } else {
2567: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2568: pop @Apache::londefdef::table;
2569: undef @Apache::londefdef::table;
2570: }
2571: }
2572: &enable_para();
2573: }
2574: }
2575: return $currentstring;
2576: }
2577:
2578: #-- <tr> tag (end tag optional)
2579: sub start_tr {
2580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2581: my $currentstring = '';
2582: if ($target eq 'web' || $target eq 'webgrade') {
2583: $currentstring = $token->[4];
2584: } elsif ($target eq 'tex') {
2585:
2586: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2587: $Apache::londefdef::table[-1]->start_row();
2588:
2589: if ($align ne '') {
2590: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2591: }
2592:
2593: #---------------------------------------------------------------
2594: # Old table code.
2595: #---------------------------------------------------------------
2596:
2597: if (0) {
2598: $Apache::londefdef::table[-1]{'row_number'}++;
2599: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2600: if ($alignchar ne '') {
2601: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2602: } else {
2603: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2604: }
2605: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2606: #
2607: # Need to save the number of table columns to preserve the max # columns.
2608: #
2609: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2610: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2611: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2612: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2613: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2614: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2615: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2616: }
2617: }
2618: return $currentstring;
2619: }
2620:
2621: sub end_tr {
2622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2623: my $currentstring = &end_p(); # Close any pending <p> in the row.
2624: if ($target eq 'web' || $target eq 'webgrade') {
2625: $currentstring .= $token->[2];
2626: } elsif ($target eq 'tex') {
2627:
2628: # In case the user is missing a </td> or </th> tag:
2629:
2630: if ($Apache::londefdef::TD_redirection) {
2631: &end_td_tex($parstack,$parser,$safeeval);
2632: }
2633: $Apache::londefdef::table[-1]->end_row();
2634:
2635: #-----------------------------------------------
2636: # Old table code
2637: #-----------------------------------------------
2638:
2639: if (0) {
2640: if ($Apache::londefdef::TD_redirection) {
2641: &end_td_tex($parstack,$parser,$safeeval);
2642: }
2643: # Counter columns must be the maximum number of columns seen
2644: # in the table so far so:
2645: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2646: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2647: }
2648: }
2649:
2650:
2651: }
2652: return $currentstring;
2653: }
2654:
2655: #-- <td> tag (end tag optional)
2656: sub start_td {
2657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2658: my $currentstring = '';
2659: if ($target eq 'web' || $target eq 'webgrade') {
2660: $currentstring = $token->[4];
2661: } elsif ($target eq 'tex') {
2662: $Apache::londefdef::TD_redirection = 1;
2663: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2664: }
2665: return $currentstring;
2666: }
2667:
2668: sub tag_check {
2669: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2670: my @ar=@$parstack;
2671: for (my $i=$#ar-1;$i>=0;$i--) {
2672: if (lc($$tagstack[$i]) eq $good_tag) {
2673: &start_td_tex($parstack,$parser,$safeeval);
2674: last;
2675: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2676: splice @ar, $i+1;
2677: &end_td_tex(\@ar,$parser,$safeeval);
2678: &start_td_tex($parstack,$parser,$safeeval);
2679: last;
2680: }
2681: }
2682: return '';
2683: }
2684:
2685: #
2686: # Factor out cell configuration hash generation:
2687: #
2688:
2689: sub cell_config_hash {
2690: my ($align, $rowspan, $colspan) = @_;
2691: my %config;
2692: if ($align ne '') {
2693: $config{'halign'} = $align;
2694: }
2695: if ($colspan ne "") {
2696: $config{'colspan'} = $colspan;
2697: }
2698: if ($rowspan ne '') {
2699: $config{'rowspan'} = $rowspan;
2700: }
2701: return \%config;
2702: }
2703:
2704: sub start_td_tex {
2705: my ($parstack,$parser,$safeeval) = @_;
2706:
2707: # At this stage, an empty cell is created with the
2708: # appropriate rowspan/colspan and alignment
2709: # attributes, but empty of text. end_td_tex will
2710: # fetch the contents from the recursive parse and
2711: # fill the cell with them:
2712: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2713: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2714: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2715:
2716: my $config = &cell_config_hash($align, $rowspan, $colspan);
2717:
2718: my $table = $Apache::londefdef::table[-1];
2719: $table->add_cell('', $config);
2720:
2721:
2722: #------------------------------------------------
2723: # Old table code.
2724: #------------------------------------------------
2725:
2726: if (0) {
2727:
2728: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2729: if ($alignchar eq '') {
2730: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2731: }
2732: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2733: $Apache::londefdef::table[-1]{'counter_columns'}++;
2734: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2735: if (defined $TeXwidth) {
2736: my $current_length=&recalc($TeXwidth);
2737: $current_length=~/(\d+\.?\d*)/;
2738: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2739: }
2740: }
2741: &Apache::lonxml::startredirection();
2742: return '';
2743: }
2744:
2745: sub end_td_tex {
2746:
2747: my $text = &Apache::lonxml::endredirection();
2748: my $table = $Apache::londefdef::table[-1];
2749: $table->append_cell_text($text);
2750:
2751: #-------------------------------------------------
2752: # Old table code
2753: #-------------------------------------------------
2754:
2755: if (0) {
2756: my ($parstack,$parser,$safeeval) = @_;
2757: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2758: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2759: my $data = &Apache::lonxml::endredirection();
2760:
2761: # The rowspan array of the table indicates which cells are part of a span.
2762: # n indicates the start of a span set of n rows.
2763: # ^ indicates a cell that continues a span set.
2764: # _ indicates the cell is at the bottom of a span set.
2765: # If this and subsequent cells are part of a rowspan, we must
2766: # push along the row until we find one that is not.
2767:
2768: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2769: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2770: # Part of a span.
2771: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2772: $current_column++;
2773: }
2774: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2775:
2776:
2777: # Get the column and row spans.
2778: # Colspan can be done via \multicolumn if I can figure out the data structs.
2779:
2780: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2781: if (!$colspan) {
2782: $colspan = 1;
2783: }
2784:
2785: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2786: if (!$rowspan) {
2787: $rowspan = 1;
2788: }
2789:
2790:
2791:
2792: for (my $c = 0; $c < $colspan; $c++) {
2793: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2794: for (my $i = 1; $i < $rowspan; $i++) {
2795: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2796: if ($i == ($rowspan-1)) {
2797: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2798: }
2799: }
2800: }
2801:
2802: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2803: if (defined $TeXwidth) {
2804: for (my $c = 0; $c < $colspan; $c++) {
2805: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2806: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2807: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2808: }
2809: } else {
2810: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2811: my $garbage_data=$data;
2812: my $fwidth=0;
2813: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2814: my $current_length=&recalc($1);
2815: $current_length=~/(\d+\.?\d*)/;
2816: if ($fwidth<$1) {$fwidth=$1;}
2817: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2818: }
2819: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2820: my $current_length=$1;
2821: if ($fwidth<$current_length) {$fwidth=$current_length;}
2822: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2823: }
2824: for (my $c = 0; $c < $colspan; $c++) {
2825: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2826: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2827: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2828: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2829: }
2830: } 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)*/) {
2831: my $garbage_data=$data;
2832: my $fwidth=0;
2833: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2834: my $current_length=&recalc($1);
2835: $current_length=~/(\d+\.?\d*)/;
2836: if ($fwidth<$1) {$fwidth=$1;}
2837: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2838: }
2839: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2840: my $current_length=&recalc($1);
2841: $current_length=~/(\d+\.?\d*)/;
2842: if ($fwidth<$1) {$fwidth=$1;}
2843: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2844: }
2845: for (my $c = 0; $c < $colspan; $c++) {
2846: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2847: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2848: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2849: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2850: }
2851: $data=~s/\\\\\s*$//;
2852: } else {
2853: $data=~s/^\s+(\S.*)/$1/;
2854: $data=~s/(.*\S)\s+$/$1/;
2855: $data=~s/(\s)+/$1/;
2856: my ($current_length,$min_length)=(0,0);
2857: if ($data=~/\\vskip/) {
2858: my $newdata=$data;
2859: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2860: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2861: foreach my $elementdata (@newdata) {
2862: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2863: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2864: my @words=split(/ /,$elementdata);
2865: foreach my $word (@words) {
2866: my $lengthword=2.5*&LATEX_length($word);
2867: if ($min_length<$lengthword) {$min_length=$lengthword;}
2868: }
2869: }
2870: } else {
2871: $current_length=2.5*&LATEX_length($data);
2872: my @words=split(/ /,$data);
2873: foreach my $word (@words) {
2874: my $lengthword=2*&LATEX_length($word);
2875: if ($min_length<$lengthword) {$min_length=$lengthword;}
2876: }
2877: }
2878: for (my $c = 0; $c < $colspan; $c++) {
2879: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2880: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2881: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2882: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2883: }
2884: }
2885: }
2886: # Substitute all of the tables nested in this cell in their appropriate places.
2887:
2888:
2889: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2890: for (my $in=0; $in<=$nested_count; $in++) {
2891: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2892: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2893: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2894: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2895:
2896: }
2897: # Should be be killing off the 'include' elements as they're used up?
2898:
2899: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2900:
2901:
2902:
2903:
2904: # the colspan array will indicate how many columns will be spanned by this
2905: # cell..this requires that counter_columns also be adjusted accordingly
2906: # so that the next bunch of text goes in the right cell. Note that since
2907: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2908: #
2909:
2910: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2911: for (my $i = 0; $i < ($colspan -1); $i++) {
2912: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2913: }
2914: for (my $r = 0; $r < $rowspan; $r++) {
2915: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2916: # Put empty text in spanned cols.
2917:
2918: }
2919:
2920: }
2921:
2922: return '';
2923: }
2924:
2925: sub end_td {
2926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2927: my $currentstring = '';
2928: if ($target eq 'web' || $target eq 'webgrade') {
2929: $currentstring = $token->[2];
2930: } elsif ($target eq 'tex') {
2931: $Apache::londefdef::TD_redirection =0;
2932: &end_td_tex($parstack,$parser,$safeeval);
2933: }
2934: return $currentstring;
2935: }
2936:
2937: #-- <th> tag (end tag optional)
2938: sub start_th {
2939: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web' || $target eq 'webgrade') {
2942: $currentstring = $token->[4];
2943: } elsif ($target eq 'tex') {
2944: $Apache::londefdef::TD_redirection = 1;
2945: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2946: }
2947: return $currentstring;
2948: }
2949:
2950: sub tagg_check {
2951: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2952: my @ar=@$parstack;
2953: for (my $i=$#ar-1;$i>=0;$i--) {
2954: if (lc($$tagstack[$i]) eq $good_tag) {
2955: &start_th_tex($parstack,$parser,$safeeval);
2956: last;
2957: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2958: splice @ar, $i+1;
2959: &end_th_tex(\@ar,$parser,$safeeval);
2960: &start_th_tex($parstack,$parser,$safeeval);
2961: last;
2962: }
2963: }
2964: return '';
2965: }
2966:
2967: sub start_th_tex {
2968: my ($parstack,$parser,$safeeval) = @_;
2969:
2970: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2971: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2972: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2973:
2974: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2975: my $table = $Apache::londefdef::table[-1];
2976: $table->add_cell('\textbf{', $config);
2977:
2978: #-------------------------------------------------------------------------------------
2979: #
2980: # Old table code.
2981: #
2982: #--------------------------------------------------------------------------------------
2983:
2984: if (0) {
2985:
2986:
2987: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2988: if ($alignchar eq '') {
2989: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2990: }
2991: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2992: $Apache::londefdef::table[-1]{'counter_columns'}++;
2993: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2994: if (defined $TeXwidth) {
2995: my $current_length=&recalc($TeXwidth);
2996: $current_length=~/(\d+\.?\d*)/;
2997: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2998: }
2999: }
3000:
3001: # Accept xml until the </th> tag.
3002:
3003: &Apache::lonxml::startredirection();
3004: return '';
3005: }
3006:
3007: sub end_th_tex {
3008: my ($parstack,$parser,$safeeval) = @_;
3009:
3010: my $table = $Apache::londefdef::table[-1];
3011: my $text = &Apache::lonxml::endredirection();
3012: $table->append_cell_text($text.'}');
3013:
3014: #-----------------------------------------------------------------------------
3015: # Old table code:
3016: #-----------------------------------------------------------------------------
3017:
3018: if (0) {
3019: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3020: my $data=&Apache::lonxml::endredirection();
3021: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3022: if (defined $TeXwidth) {
3023: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3024: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3025: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3026: } else {
3027: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3028: my $garbage_data=$data;
3029: my $fwidth=0;
3030: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3031: my $current_length=&recalc($1);
3032: $current_length=~/(\d+\.?\d*)/;
3033: if ($fwidth<$1) {$fwidth=$1;}
3034: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3035: }
3036: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3037: my $current_length=$1;
3038: if ($fwidth<$current_length) {$fwidth=$current_length;}
3039: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3040: }
3041: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3042: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3043: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3044: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3045: } else {
3046: $data=~s/^\s+(\S.*)/$1/;
3047: $data=~s/(.*\S)\s+$/$1/;
3048: $data=~s/(\s)+/$1/;
3049: my ($current_length,$min_length)=(0,0);
3050: if ($data=~/\\vskip/) {
3051: my $newdata=$data;
3052: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3053: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3054: foreach my $elementdata (@newdata) {
3055: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3056: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3057: my @words=split(/ /,$elementdata);
3058: foreach my $word (@words) {
3059: my $lengthword=2.5*&LATEX_length($word);
3060: if ($min_length<$lengthword) {$min_length=$lengthword;}
3061: }
3062: }
3063: } else {
3064: $current_length=2.5*&LATEX_length($data);
3065: my @words=split(/ /,$data);
3066: foreach my $word (@words) {
3067: my $lengthword=2*&LATEX_length($word);
3068: if ($min_length<$lengthword) {$min_length=$lengthword;}
3069: }
3070: }
3071: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3072: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3073: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3074: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3075: }
3076: }
3077: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3078: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3079: }
3080: #make data bold
3081: $data='\textbf{'.$data.'}';
3082: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3083: }
3084: return'';
3085: }
3086:
3087: sub end_th {
3088: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3089: my $currentstring = &end_p(); # Close any open <p> in the row.
3090: if ($target eq 'web' || $target eq 'webgrade') {
3091: $currentstring .= $token->[2];
3092: } elsif ($target eq 'tex') {
3093: $Apache::londefdef::TD_redirection =0;
3094: &end_th_tex($parstack,$parser,$safeeval);
3095: }
3096: return $currentstring;
3097: }
3098:
3099: #-- <img> tag (end tag forbidden)
3100: #
3101: # Render the <IMG> tag.
3102: # <IMG> has the following attributes (in addition to the
3103: # standard HTML ones:
3104: # TeXwrap - Governs how the tex target will try to wrap text around
3105: # horizontally aligned images.
3106: # TeXwidth - The width of the image when rendered for print (mm).
3107: # TeXheight - The height of the image when rendered for print (mm)
3108: # (Note there seems to also be support for this as a % of page size)
3109: #
3110: sub start_img {
3111: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3112: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3113: undef,1);
3114: if (! $src &&
3115: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3116: ) {
3117: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3118: return '';
3119: }
3120: &Apache::lonxml::extlink($src);
3121: my $currentstring = '';
3122: my $scaling = .3;
3123:
3124: # Render unto browsers that which are the browser's...
3125:
3126: if ($target eq 'web' || $target eq 'webgrade') {
3127: if ($env{'browser.imagesuppress'} ne 'on') {
3128: my $enc = ('yes' eq
3129: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3130: $safeeval)));
3131: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3132: $enc);
3133: } else {
3134: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
3135: undef,1);
3136: if (!$alttag) {
3137: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3138: $src);
3139: }
3140: $currentstring.='[IMAGE: '.$alttag.']';
3141: }
3142:
3143: # and render unto TeX that which is LaTeX
3144:
3145: } elsif ($target eq 'tex') {
3146: #
3147: # The alignment will require some superstructure to be put around
3148: # the \includegraphics stuff. At present we can only partially
3149: # simulate the alignments offered by html.
3150: #
3151: #
3152: my $align = lc(&Apache::lonxml::get_param('align',
3153: $parstack,
3154: $safeeval,
3155: undef,1));
3156: if(!$align) {
3157: $align = "bottom"; # This is html's default so it's ours too.
3158: }
3159: #
3160: &Apache::lonxml::debug("Alignemnt = $align");
3161: # LaTeX's image/text wrapping is really bad since it wants to
3162: # make figures float.
3163: # The user has the optional parameter (applicable only to l/r
3164: # alignment to use the picins/parpic directive to get wrapped text
3165: # this is also imperfect.. that's why we give them a choice...
3166: # so they can't yell at us for our choice.
3167: #
3168: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3169: $parstack,
3170: $safeeval,
3171: undef,0);
3172: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3173: if(!$latex_rendering) {
3174: $latex_rendering = "texwrap";
3175: }
3176: # using texwrap inside a table does not work. So, if after all of this,
3177: # texwrap is on, we turn it off if we detect we're in a table:
3178: #
3179: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3180: $latex_rendering = 'parpic';
3181: }
3182:
3183: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3184:
3185: #if original bmp/gif/jpg/png file exist do following:
3186: my $origsrc=$src;
3187: my ($path,$file) = &get_eps_image($src);
3188: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3189: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3190: &Apache::lonxml::debug("path = $path file = $file src = $src");
3191: if (-e $src) {
3192: &Apache::lonxml::debug("$src exists");
3193: my ($height_param,$width_param)=
3194: &image_size($origsrc,0.3,$parstack,$safeeval);
3195: my $size;
3196: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3197: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3198: # Default size if not able to extract that (e.g. eps image).
3199:
3200: # &Apache::lonnet::logthis("Size = $size");
3201:
3202: $size='['.$size;
3203: $size=~s/,$/]/;
3204: $currentstring .= '\graphicspath{{'.$path.'}}'
3205: .'\includegraphics'.$size.'{'.$file.'} ';
3206: my $closure;
3207: ($currentstring, $closure) = &align_latex_image($align,
3208: $latex_rendering,
3209: $currentstring,
3210: $width_param,
3211: $height_param);
3212: $currentstring .= $closure;
3213:
3214: } else {
3215: &Apache::lonxml::debug("$src does not exist");
3216: #original image file doesn't exist so check the alt attribute
3217: my $alt =
3218: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3219: unless ($alt) {
3220: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3221: }
3222:
3223: if ($alt) { $currentstring .= ' '.$alt.' '; }
3224: }
3225:
3226: # And here's where the semi-quote breaks down: allow the user
3227: # to edit the beast as well by rendering the problem for edit:
3228: } elsif ($target eq 'edit') {
3229: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3230: $currentstring .=&Apache::edit::tag_start($target,$token);
3231: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3232: &Apache::edit::browse('src',undef,'alt',$only).' '.
3233: &Apache::edit::search('src',undef,'alt').'<br />';
3234: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3235: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3236: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3237: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3238: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3239: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3240: ['','bottom','middle','top','left','right'],$token,5);
3241: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3242: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3243: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3244: ['no','yes'], $token, 2);
3245: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3246: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3247: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3248: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3249: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3250:
3251: if ($token->[2]{'src'}=~/\$/) {
3252: $currentstring.='Variable image source';
3253: } else {
3254: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3255: if ($width) { $currentstring.=' width="'.$width.'" '; }
3256: if ($height) { $currentstring.=' height="'.$height.'" '; }
3257: $currentstring .= ' />';
3258: }
3259: } elsif ($target eq 'modified') {
3260: my ($osrc,$owidth,$oheight)=
3261: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3262: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3263: $safeeval,'src','alt','align',
3264: 'TeXwidth','TeXheight', 'TeXwrap',
3265: 'width','height','encrypturl');
3266: my ($nsrc,$nwidth,$nheight)=
3267: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3268: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3269: &image_replication($loc);
3270: my ($iwidth,$iheight);
3271: if (-e $loc) {
3272: my $image = Image::Magick->new;
3273: $image->Read($loc);
3274: ($iwidth, $iheight) = ($image->Get('width'),
3275: $image->Get('height'));
3276: }
3277: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3278: # changed image or no size specified,
3279: # if they didn't explicitly change the
3280: # width or height use the ones from the image
3281: if ($iwidth && $iheight) {
3282: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3283: $token->[2]{'width'} = $iwidth;$ctag=1;
3284: }
3285: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3286: $token->[2]{'height'}=$iheight;$ctag=1;
3287: }
3288: }
3289: }
3290: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3291: # if we don't have a width or height
3292: if ($iwidth && $cwidth && !$cheight) {
3293: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3294: }
3295: if ($iheight && $cheight && !$cwidth) {
3296: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3297: }
3298: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3299: }
3300:
3301: return $currentstring;
3302: }
3303:
3304: sub end_img {
3305: my ($target,$token) = @_;
3306: my $currentstring = '';
3307: if ($target eq 'web' || $target eq 'webgrade') {
3308: $currentstring = $token->[2];
3309: } elsif ($target eq 'tex') {
3310: $currentstring = '';
3311: }
3312: return $currentstring;
3313: }
3314:
3315: #-- <applet> tag (end tag required)
3316: sub start_applet {
3317: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3318:
3319: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3320: &Apache::lonxml::extlink($code);
3321: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3322: undef,1);
3323: &Apache::lonxml::extlink($archive);
3324: my $currentstring = '';
3325: if ($target eq 'web' || $target eq 'webgrade') {
3326: if ($env{'browser.appletsuppress'} ne 'on') {
3327: $currentstring = &Apache::lonenc::encrypt_ref($token,
3328: {'code'=>$code,
3329: 'archive'=>$archive}
3330: );
3331: } else {
3332: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3333: $safeeval,undef,1);
3334: unless ($alttag) {
3335: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3336: $code);
3337: }
3338: $currentstring='[APPLET: '.$alttag.']';
3339: }
3340: } elsif ($target eq 'tex') {
3341: # Turn off some stuff we can't be inside thank you LaTeX
3342:
3343:
3344: my $restart_sub = 0;
3345: my $restart_sup = 0;
3346:
3347: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3348: # using the start_ stop_ functions.. those tags only care about
3349: # $target.
3350:
3351: if (&is_inside_of($tagstack, "sub")) {
3352: $restart_sub = 1;
3353: $currentstring .= &end_sub($target, $token, $tagstack,
3354: $parstack, $parser, $safeeval);
3355: }
3356: if (&is_inside_of($tagstack, "sup")) {
3357: $restart_sup = 1;
3358: $currentstring .= &end_sup($target, $token, $tagstack,
3359: $parstack, $parser, $safeeval);
3360: }
3361:
3362: # Now process the applet; just replace it with its alt attribute.
3363:
3364: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3365: $safeeval,undef,1);
3366: unless ($alttag) {
3367: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3368: undef,1);
3369: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3370: $code);
3371: }
3372: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3373: '.}\end{center}';
3374:
3375: # Turn stuff back on that we can't be inside of.
3376:
3377: if ($restart_sub) {
3378: $currentstring .= &start_sub($target, $token, $tagstack,
3379: $parstack, $parser, $safeeval);
3380: }
3381: if ($restart_sup) {
3382: $currentstring .= &start_sup($target, $token, $tagstack,
3383: $parstack, $parser, $safeeval);
3384: }
3385: }
3386: return $currentstring;
3387: }
3388:
3389: sub end_applet {
3390: my ($target,$token) = @_;
3391: my $currentstring = '';
3392: if ($target eq 'web' || $target eq 'webgrade') {
3393: $currentstring = $token->[2];
3394: } elsif ($target eq 'tex') {
3395: }
3396: return $currentstring;
3397: }
3398:
3399: #-- <embed> tag (end tag optional/required)
3400: sub start_embed {
3401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3402: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3403: &Apache::lonxml::extlink($src);
3404: my $currentstring = '';
3405: if ($target eq 'web' || $target eq 'webgrade') {
3406: if ($env{'browser.embedsuppress'} ne 'on') {
3407: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3408: } else {
3409: my $alttag=&Apache::lonxml::get_param
3410: ('alt',$parstack,$safeeval,undef,1);
3411: unless ($alttag) {
3412: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3413: }
3414: $currentstring='[EMBED: '.$alttag.']';
3415: }
3416: } elsif ($target eq 'tex') {
3417: }
3418: return $currentstring;
3419: }
3420:
3421: sub end_embed {
3422: my ($target,$token) = @_;
3423: my $currentstring = '';
3424: if ($target eq 'web' || $target eq 'webgrade') {
3425: $currentstring = $token->[2];
3426: } elsif ($target eq 'tex') {
3427: }
3428: return $currentstring;
3429: }
3430:
3431: #-- <param> tag (end tag forbidden)
3432: sub start_param {
3433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3434: if (&Apache::lonxml::get_param('name',$parstack,
3435: $safeeval,undef,1)=~/^cabbase$/i) {
3436: my $value=&Apache::lonxml::get_param('value',$parstack,
3437: $safeeval,undef,1);
3438: &Apache::lonxml::extlink($value);
3439: }
3440:
3441: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3442: &Apache::lonxml::extlink($src);
3443: my $currentstring = '';
3444: if ($target eq 'web' || $target eq 'webgrade') {
3445: my %toconvert;
3446: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3447: if ($src) { $toconvert{'src'}= $src; }
3448: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3449: undef,1);
3450: if ($name=~/^cabbase$/i) {
3451: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3452: $safeeval,undef,1);
3453: }
3454: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3455: } elsif ($target eq 'tex') {
3456: }
3457: return $currentstring;
3458: }
3459:
3460: sub end_param {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web' || $target eq 'webgrade') {
3464: $currentstring = $token->[2];
3465: } elsif ($target eq 'tex') {
3466: }
3467: return $currentstring;
3468: }
3469:
3470: #-- <allow> tag
3471: sub start_allow {
3472: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3473: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3474: &Apache::lonxml::extlink($src);
3475:
3476: if ($target eq 'tex') { &image_replication($src); }
3477: my $result;
3478: if ($target eq 'edit') {
3479: $result .=&Apache::edit::tag_start($target,$token);
3480: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3481: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3482: } elsif ($target eq 'modified') {
3483: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3484: $safeeval,'src');
3485: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3486: }
3487: return $result;
3488: }
3489:
3490: sub end_allow {
3491: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3492: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3493: return '';
3494: }
3495:
3496: #-- Frames (end tag required)
3497: #-- <frameset>
3498: sub start_frameset {
3499: my ($target,$token) = @_;
3500: my $currentstring = ''; # Close any pending para.
3501: if ($target eq 'web' || $target eq 'webgrade') {
3502: $currentstring =
3503: &Apache::loncommon::start_page($Apache::londefdef::title,
3504: $Apache::londefdef::head,
3505: {'add_entries' => $token->[2],
3506: 'no_title' => 1,
3507: 'force_register' => 1,
3508: 'frameset' => 1,});
3509:
3510: }
3511: return $currentstring;
3512: }
3513:
3514: sub end_frameset {
3515: my ($target,$token) = @_;
3516: my $currentstring = '';
3517: if ($target eq 'web' || $target eq 'webgrade') {
3518: $currentstring = $token->[2];
3519: }
3520: return $currentstring;
3521: }
3522:
3523: #-- <xmp> (end tag required)
3524: sub start_xmp {
3525: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3526: my $currentstring = '';
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring .= $token->[4];
3529: } elsif ($target eq 'tex') {
3530: $currentstring .= '\begin{verbatim}';
3531: }
3532: return $currentstring;
3533: }
3534:
3535: sub end_xmp {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web' || $target eq 'webgrade') {
3539: $currentstring .= $token->[2];
3540: } elsif ($target eq 'tex') {
3541: $currentstring .= '\end{verbatim}';
3542: }
3543: return $currentstring;
3544: }
3545:
3546: #-- <pre> (end tag required)
3547: sub start_pre {
3548: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3549: my $currentstring = &end_p(); # close off pending <p>
3550: if ($target eq 'web' || $target eq 'webgrade') {
3551: $currentstring .= $token->[4];
3552: } elsif ($target eq 'tex') {
3553: $currentstring .= '\begin{verbatim}';
3554: &Apache::lonxml::disable_LaTeX_substitutions();
3555: }
3556: return $currentstring;
3557: }
3558:
3559: sub end_pre {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web' || $target eq 'webgrade') {
3563: $currentstring .= $token->[2];
3564: } elsif ($target eq 'tex') {
3565: $currentstring .= '\end{verbatim}';
3566: &Apache::lonxml::enable_LaTeX_substitutions();
3567: }
3568: return $currentstring;
3569: }
3570:
3571: #-- <insert>
3572: sub start_insert {
3573: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3574: my $currentstring = '';
3575: if ($target eq 'web' || $target eq 'webgrade') {
3576: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3577: $currentstring .= '<b>'.$display.'</b>';;
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_insert {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web' || $target eq 'webgrade') {
3586: $currentstring .= '';
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <externallink>
3592: sub start_externallink {
3593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web' || $target eq 'webgrade') {
3596: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3597: $currentstring .= '<b>'.$display.'</b>';;
3598: }
3599: return $currentstring;
3600: }
3601:
3602: sub end_externallink {
3603: my ($target,$token) = @_;
3604: my $currentstring = '';
3605: if ($target eq 'web' || $target eq 'webgrade') {
3606: $currentstring .= '';
3607: }
3608: return $currentstring;
3609: }
3610:
3611: #-- <blankspace heigth="">
3612: sub start_blankspace {
3613: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3614: my $currentstring = &end_p(); # closes off any unclosed <p>
3615: if ($target eq 'tex') {
3616: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3617: $currentstring .= '\vskip '.$howmuch.' ';
3618: }
3619: return $currentstring;
3620: }
3621:
3622: sub end_blankspace {
3623: my ($target,$token) = @_;
3624: my $currentstring = '';
3625: if ($target eq 'tex') {
3626: $currentstring .= '';
3627: }
3628: return $currentstring;
3629: }
3630:
3631: #-- <abbr> tag (end tag required)
3632: sub start_abbr {
3633: my ($target,$token) = @_;
3634: my $currentstring = '';
3635: if ($target eq 'web' || $target eq 'webgrade') {
3636: $currentstring = $token->[4];
3637: }
3638: return $currentstring;
3639: }
3640:
3641: sub end_abbr {
3642: my ($target,$token) = @_;
3643: my $currentstring = '';
3644: if ($target eq 'web' || $target eq 'webgrade') {
3645: $currentstring = $token->[2];
3646: }
3647: return $currentstring;
3648: }
3649:
3650: #-- <acronym> tag (end tag required)
3651: sub start_acronym {
3652: my ($target,$token) = @_;
3653: my $currentstring = '';
3654: if ($target eq 'web' || $target eq 'webgrade') {
3655: $currentstring = $token->[4];
3656: }
3657: return $currentstring;
3658: }
3659:
3660: sub end_acronym {
3661: my ($target,$token) = @_;
3662: my $currentstring = '';
3663: if ($target eq 'web' || $target eq 'webgrade') {
3664: $currentstring = $token->[2];
3665: }
3666: return $currentstring;
3667: }
3668:
3669: #-- <area> tag (end tag forbidden)
3670: sub start_area {
3671: my ($target,$token) = @_;
3672: my $currentstring = '';
3673: if ($target eq 'web' || $target eq 'webgrade') {
3674: $currentstring = $token->[4];
3675: }
3676: return $currentstring;
3677: }
3678:
3679: sub end_area {
3680: my ($target,$token) = @_;
3681: my $currentstring = '';
3682: if ($target eq 'web' || $target eq 'webgrade') {
3683: $currentstring = $token->[2];
3684: }
3685: return $currentstring;
3686: }
3687:
3688: #-- <base> tag (end tag forbidden)
3689: sub start_base {
3690: my ($target,$token) = @_;
3691: my $currentstring = '';
3692: if ($target eq 'web' || $target eq 'webgrade') {
3693: $currentstring = $token->[4];
3694: }
3695: return $currentstring;
3696: }
3697:
3698: sub end_base {
3699: my ($target,$token) = @_;
3700: my $currentstring = '';
3701: if ($target eq 'web' || $target eq 'webgrade') {
3702: $currentstring = $token->[2];
3703: }
3704: return $currentstring;
3705: }
3706:
3707: #-- <bdo> tag (end tag required)
3708: sub start_bdo {
3709: my ($target,$token) = @_;
3710: my $currentstring = '';
3711: if ($target eq 'web' || $target eq 'webgrade') {
3712: $currentstring = $token->[4];
3713: }
3714: return $currentstring;
3715: }
3716:
3717: sub end_bdo {
3718: my ($target,$token) = @_;
3719: my $currentstring = '';
3720: if ($target eq 'web' || $target eq 'webgrade') {
3721: $currentstring = $token->[2];
3722: }
3723: return $currentstring;
3724: }
3725:
3726: #-- <bgsound> tag (end tag optional)
3727: sub start_bgsound {
3728: my ($target,$token) = @_;
3729: my $currentstring = '';
3730: if ($target eq 'web' || $target eq 'webgrade') {
3731: $currentstring = $token->[4];
3732: }
3733: return $currentstring;
3734: }
3735:
3736: sub end_bgsound {
3737: my ($target,$token) = @_;
3738: my $currentstring = '';
3739: if ($target eq 'web' || $target eq 'webgrade') {
3740: $currentstring = $token->[2];
3741: }
3742: return $currentstring;
3743: }
3744:
3745: #-- <blink> tag (end tag required)
3746: sub start_blink {
3747: my ($target,$token) = @_;
3748: my $currentstring = '';
3749: if ($target eq 'web' || $target eq 'webgrade') {
3750: $currentstring = $token->[4];
3751: }
3752: return $currentstring;
3753: }
3754:
3755: sub end_blink {
3756: my ($target,$token) = @_;
3757: my $currentstring = '';
3758: if ($target eq 'web' || $target eq 'webgrade') {
3759: $currentstring = $token->[2];
3760: }
3761: return $currentstring;
3762: }
3763:
3764: #-- <blockquote> tag (end tag required)
3765: sub start_blockquote {
3766: my ($target,$token) = @_;
3767: my $currentstring = &end_p(); # Close any unclosed <p>
3768: if ($target eq 'web' || $target eq 'webgrade') {
3769: $currentstring .= $token->[4];
3770: }
3771: if ($target eq 'tex') {
3772: $currentstring .= '\begin{quote}';
3773: }
3774: return $currentstring;
3775: }
3776:
3777: sub end_blockquote {
3778: my ($target,$token) = @_;
3779: my $currentstring = '';
3780: if ($target eq 'web' || $target eq 'webgrade') {
3781: $currentstring = $token->[2];
3782: }
3783: if ($target eq 'tex') {
3784: $currentstring = '\end{quote}';
3785: }
3786: return $currentstring;
3787: }
3788:
3789: #-- <button> tag (end tag required)
3790: sub start_button {
3791: my ($target,$token) = @_;
3792: my $currentstring = '';
3793: if ($target eq 'web' || $target eq 'webgrade') {
3794: $currentstring = $token->[4];
3795: }
3796: return $currentstring;
3797: }
3798:
3799: sub end_button {
3800: my ($target,$token) = @_;
3801: my $currentstring = '';
3802: if ($target eq 'web' || $target eq 'webgrade') {
3803: $currentstring = $token->[2];
3804: }
3805: return $currentstring;
3806: }
3807:
3808: #-- <caption> tag (end tag required)
3809: sub start_caption {
3810: my ($target,$token) = @_;
3811: my $currentstring = '';
3812: if ($target eq 'web' || $target eq 'webgrade') {
3813: $currentstring = $token->[4];
3814: }
3815: return $currentstring;
3816: }
3817:
3818: sub end_caption {
3819: my ($target,$token) = @_;
3820: my $currentstring = '';
3821: if ($target eq 'web' || $target eq 'webgrade') {
3822: $currentstring = $token->[2];
3823: }
3824: return $currentstring;
3825: }
3826:
3827: #-- <col> tag (end tag forbdden)
3828: sub start_col {
3829: my ($target,$token) = @_;
3830: my $currentstring = '';
3831: if ($target eq 'web' || $target eq 'webgrade') {
3832: $currentstring = $token->[4];
3833: }
3834: return $currentstring;
3835: }
3836:
3837: sub end_col {
3838: my ($target,$token) = @_;
3839: my $currentstring = '';
3840: if ($target eq 'web' || $target eq 'webgrade') {
3841: $currentstring = $token->[2];
3842: }
3843: return $currentstring;
3844: }
3845:
3846: #-- <colgroup> tag (end tag optional)
3847: sub start_colgroup {
3848: my ($target,$token) = @_;
3849: my $currentstring = '';
3850: if ($target eq 'web' || $target eq 'webgrade') {
3851: $currentstring = $token->[4];
3852: }
3853: return $currentstring;
3854: }
3855:
3856: sub end_colgroup {
3857: my ($target,$token) = @_;
3858: my $currentstring = '';
3859: if ($target eq 'web' || $target eq 'webgrade') {
3860: $currentstring = $token->[2];
3861: }
3862: return $currentstring;
3863: }
3864:
3865: #-- <del> tag (end tag required)
3866: sub start_del {
3867: my ($target,$token) = @_;
3868: my $currentstring = '';
3869: if ($target eq 'web' || $target eq 'webgrade') {
3870: $currentstring = $token->[4];
3871: }
3872: return $currentstring;
3873: }
3874:
3875: sub end_del {
3876: my ($target,$token) = @_;
3877: my $currentstring = '';
3878: if ($target eq 'web' || $target eq 'webgrade') {
3879: $currentstring = $token->[2];
3880: }
3881: return $currentstring;
3882: }
3883:
3884: #-- <fieldset> tag (end tag required)
3885: sub start_fieldset {
3886: my ($target,$token) = @_;
3887: my $currentstring = '';
3888: if ($target eq 'web' || $target eq 'webgrade') {
3889: $currentstring = $token->[4];
3890: }
3891: return $currentstring;
3892: }
3893:
3894: sub end_fieldset {
3895: my ($target,$token) = @_;
3896: my $currentstring = '';
3897: if ($target eq 'web' || $target eq 'webgrade') {
3898: $currentstring = $token->[2];
3899: }
3900: return $currentstring;
3901: }
3902:
3903: #-- <frame> tag (end tag forbidden)
3904: sub start_frame {
3905: my ($target,$token) = @_;
3906: my $currentstring = '';
3907: if ($target eq 'web' || $target eq 'webgrade') {
3908: $currentstring = $token->[4];
3909: }
3910: return $currentstring;
3911: }
3912:
3913: sub end_frame {
3914: my ($target,$token) = @_;
3915: my $currentstring = '';
3916: if ($target eq 'web' || $target eq 'webgrade') {
3917: $currentstring = $token->[2];
3918: }
3919: return $currentstring;
3920: }
3921:
3922: #-- <iframe> tag (end tag required)
3923: sub start_iframe {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[4];
3928: }
3929: return $currentstring;
3930: }
3931:
3932: sub end_iframe {
3933: my ($target,$token) = @_;
3934: my $currentstring = '';
3935: if ($target eq 'web' || $target eq 'webgrade') {
3936: $currentstring = $token->[2];
3937: }
3938: return $currentstring;
3939: }
3940:
3941: #-- <ins> tag (end tag required)
3942: sub start_ins {
3943: my ($target,$token) = @_;
3944: my $currentstring = '';
3945: if ($target eq 'web' || $target eq 'webgrade') {
3946: $currentstring = $token->[4];
3947: }
3948: return $currentstring;
3949: }
3950:
3951: sub end_ins {
3952: my ($target,$token) = @_;
3953: my $currentstring = '';
3954: if ($target eq 'web' || $target eq 'webgrade') {
3955: $currentstring = $token->[2];
3956: }
3957: return $currentstring;
3958: }
3959:
3960: #-- <isindex> tag (end tag forbidden)
3961: sub start_isindex {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[4];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: sub end_isindex {
3971: my ($target,$token) = @_;
3972: my $currentstring = '';
3973: if ($target eq 'web' || $target eq 'webgrade') {
3974: $currentstring = $token->[2];
3975: }
3976: return $currentstring;
3977: }
3978:
3979: #-- <keygen> tag (end tag forbidden)
3980: sub start_keygen {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[4];
3985: }
3986: return $currentstring;
3987: }
3988:
3989: sub end_keygen {
3990: my ($target,$token) = @_;
3991: my $currentstring = '';
3992: if ($target eq 'web' || $target eq 'webgrade') {
3993: $currentstring = $token->[2];
3994: }
3995: return $currentstring;
3996: }
3997:
3998: #-- <label> tag
3999: sub start_label {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[4];
4004: }
4005: return $currentstring;
4006: }
4007:
4008: sub end_label {
4009: my ($target,$token) = @_;
4010: my $currentstring = '';
4011: if ($target eq 'web' || $target eq 'webgrade') {
4012: $currentstring = $token->[2];
4013: }
4014: return $currentstring;
4015: }
4016:
4017: #-- <layer> tag (end tag required)
4018: sub start_layer {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web' || $target eq 'webgrade') {
4022: $currentstring = $token->[4];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: sub end_layer {
4028: my ($target,$token) = @_;
4029: my $currentstring = '';
4030: if ($target eq 'web' || $target eq 'webgrade') {
4031: $currentstring = $token->[2];
4032: }
4033: return $currentstring;
4034: }
4035:
4036: #-- <legend> tag (end tag required)
4037: sub start_legend {
4038: my ($target,$token) = @_;
4039: my $currentstring = '';
4040: if ($target eq 'web' || $target eq 'webgrade') {
4041: $currentstring = $token->[4];
4042: }
4043: return $currentstring;
4044: }
4045:
4046: sub end_legend {
4047: my ($target,$token) = @_;
4048: my $currentstring = '';
4049: if ($target eq 'web' || $target eq 'webgrade') {
4050: $currentstring = $token->[2];
4051: }
4052: return $currentstring;
4053: }
4054:
4055: #-- <link> tag (end tag forbidden)
4056: sub start_link {
4057: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4058: my $currentstring = '';
4059: if ($target eq 'web' || $target eq 'webgrade') {
4060: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4061: undef,1);
4062: &Apache::lonxml::extlink($href);
4063: $currentstring = $token->[4];
4064: }
4065: return $currentstring;
4066: }
4067:
4068: sub end_link {
4069: my ($target,$token) = @_;
4070: my $currentstring = '';
4071: if ($target eq 'web' || $target eq 'webgrade') {
4072: $currentstring = $token->[2];
4073: }
4074: return $currentstring;
4075: }
4076:
4077: #-- <marquee> tag (end tag optional)
4078: sub start_marquee {
4079: my ($target,$token) = @_;
4080: my $currentstring = '';
4081: if ($target eq 'web' || $target eq 'webgrade') {
4082: $currentstring = $token->[4];
4083: }
4084: return $currentstring;
4085: }
4086:
4087: sub end_marquee {
4088: my ($target,$token) = @_;
4089: my $currentstring = '';
4090: if ($target eq 'web' || $target eq 'webgrade') {
4091: $currentstring = $token->[2];
4092: }
4093: return $currentstring;
4094: }
4095:
4096: #-- <multicol> tag (end tag required)
4097: sub start_multicol {
4098: my ($target,$token) = @_;
4099: my $currentstring = &end_p(); # Close any pending <p>
4100: if ($target eq 'web' || $target eq 'webgrade') {
4101: $currentstring .= $token->[4];
4102: }
4103: return $currentstring;
4104: }
4105:
4106: sub end_multicol {
4107: my ($target,$token) = @_;
4108: my $currentstring = '';
4109: if ($target eq 'web' || $target eq 'webgrade') {
4110: $currentstring = $token->[2];
4111: }
4112: return $currentstring;
4113: }
4114:
4115: #-- <nobr> tag (end tag required)
4116: sub start_nobr {
4117: my ($target,$token) = @_;
4118: my $currentstring = '';
4119: if ($target eq 'web' || $target eq 'webgrade') {
4120: $currentstring = $token->[4];
4121: } elsif ($target eq 'tex') {
4122: $currentstring='\mbox{';
4123: }
4124: return $currentstring;
4125: }
4126:
4127: sub end_nobr {
4128: my ($target,$token) = @_;
4129: my $currentstring = '';
4130: if ($target eq 'web' || $target eq 'webgrade') {
4131: $currentstring = $token->[2];
4132: } elsif ($target eq 'tex') {
4133: $currentstring='}';
4134: }
4135: return $currentstring;
4136: }
4137:
4138: #-- <noembed> tag (end tag required)
4139: sub start_noembed {
4140: my ($target,$token) = @_;
4141: my $currentstring = '';
4142: if ($target eq 'web' || $target eq 'webgrade') {
4143: $currentstring = $token->[4];
4144: }
4145: return $currentstring;
4146: }
4147:
4148: sub end_noembed {
4149: my ($target,$token) = @_;
4150: my $currentstring = '';
4151: if ($target eq 'web' || $target eq 'webgrade') {
4152: $currentstring = $token->[2];
4153: }
4154: return $currentstring;
4155: }
4156:
4157: #-- <noframes> tag (end tag required)
4158: sub start_noframes {
4159: my ($target,$token) = @_;
4160: my $currentstring = '';
4161: if ($target eq 'web' || $target eq 'webgrade') {
4162: $currentstring = $token->[4];
4163: }
4164: return $currentstring;
4165: }
4166:
4167: sub end_noframes {
4168: my ($target,$token) = @_;
4169: my $currentstring = '';
4170: if ($target eq 'web' || $target eq 'webgrade') {
4171: $currentstring = $token->[2];
4172: }
4173: return $currentstring;
4174: }
4175:
4176: #-- <nolayer> tag (end tag required)
4177: sub start_nolayer {
4178: my ($target,$token) = @_;
4179: my $currentstring = '';
4180: if ($target eq 'web' || $target eq 'webgrade') {
4181: $currentstring = $token->[4];
4182: }
4183: return $currentstring;
4184: }
4185:
4186: sub end_nolayer {
4187: my ($target,$token) = @_;
4188: my $currentstring = '';
4189: if ($target eq 'web' || $target eq 'webgrade') {
4190: $currentstring = $token->[2];
4191: }
4192: return $currentstring;
4193: }
4194:
4195: #-- <noscript> tag (end tag required)
4196: sub start_noscript {
4197: my ($target,$token) = @_;
4198: my $currentstring = '';
4199: if ($target eq 'web' || $target eq 'webgrade') {
4200: $currentstring = $token->[4];
4201: }
4202: return $currentstring;
4203: }
4204:
4205: sub end_noscript {
4206: my ($target,$token) = @_;
4207: my $currentstring = '';
4208: if ($target eq 'web' || $target eq 'webgrade') {
4209: $currentstring = $token->[2];
4210: }
4211: return $currentstring;
4212: }
4213:
4214: #-- <object> tag (end tag required)
4215: sub start_object {
4216: my ($target,$token) = @_;
4217: my $currentstring = '';
4218: if ($target eq 'web' || $target eq 'webgrade') {
4219: $currentstring = $token->[4];
4220: }
4221: return $currentstring;
4222: }
4223:
4224: sub end_object {
4225: my ($target,$token) = @_;
4226: my $currentstring = '';
4227: if ($target eq 'web' || $target eq 'webgrade') {
4228: $currentstring = $token->[2];
4229: }
4230: return $currentstring;
4231: }
4232:
4233: #-- <optgroup> tag (end tag required)
4234: sub start_optgroup {
4235: my ($target,$token) = @_;
4236: my $currentstring = '';
4237: if ($target eq 'web' || $target eq 'webgrade') {
4238: $currentstring = $token->[4];
4239: }
4240: return $currentstring;
4241: }
4242:
4243: sub end_optgroup {
4244: my ($target,$token) = @_;
4245: my $currentstring = '';
4246: if ($target eq 'web' || $target eq 'webgrade') {
4247: $currentstring = $token->[2];
4248: }
4249: return $currentstring;
4250: }
4251:
4252: #-- <samp> tag (end tag required)
4253: sub start_samp {
4254: my ($target,$token) = @_;
4255: my $currentstring = '';
4256: if ($target eq 'web' || $target eq 'webgrade') {
4257: $currentstring = $token->[4];
4258: } elsif ($target eq 'tex') {
4259: $currentstring='\texttt{';
4260: }
4261: return $currentstring;
4262: }
4263:
4264: sub end_samp {
4265: my ($target,$token) = @_;
4266: my $currentstring = '';
4267: if ($target eq 'web' || $target eq 'webgrade') {
4268: $currentstring = $token->[2];
4269: } elsif ($target eq 'tex') {
4270: $currentstring='}';
4271: }
4272: return $currentstring;
4273: }
4274:
4275: #-- <server> tag
4276: sub start_server {
4277: my ($target,$token) = @_;
4278: my $currentstring = '';
4279: if ($target eq 'web' || $target eq 'webgrade') {
4280: $currentstring = $token->[4];
4281: }
4282: return $currentstring;
4283: }
4284:
4285: sub end_server {
4286: my ($target,$token) = @_;
4287: my $currentstring = '';
4288: if ($target eq 'web' || $target eq 'webgrade') {
4289: $currentstring = $token->[2];
4290: }
4291: return $currentstring;
4292: }
4293:
4294: #-- <spacer> tag (end tag forbidden)
4295: sub start_spacer {
4296: my ($target,$token) = @_;
4297: my $currentstring = &end_p(); # Close off any open <p> tag.
4298: if ($target eq 'web' || $target eq 'webgrade') {
4299: $currentstring .= $token->[4];
4300: }
4301: return $currentstring;
4302: }
4303:
4304: sub end_spacer {
4305: my ($target,$token) = @_;
4306: my $currentstring = '';
4307: if ($target eq 'web' || $target eq 'webgrade') {
4308: $currentstring = $token->[2];
4309: }
4310: return $currentstring;
4311: }
4312:
4313: #-- <span> tag (end tag required)
4314: sub start_span {
4315: my ($target,$token) = @_;
4316: my $currentstring = '';
4317: if ($target eq 'web' || $target eq 'webgrade') {
4318: $currentstring = $token->[4];
4319: }
4320: return $currentstring;
4321: }
4322:
4323: sub end_span {
4324: my ($target,$token) = @_;
4325: my $currentstring = '';
4326: if ($target eq 'web' || $target eq 'webgrade') {
4327: $currentstring = $token->[2];
4328: }
4329: return $currentstring;
4330: }
4331:
4332: #-- <tbody> tag (end tag optional)
4333: sub start_tbody {
4334: my ($target,$token) = @_;
4335: my $currentstring = '';
4336: if ($target eq 'web' || $target eq 'webgrade') {
4337: $currentstring = $token->[4];
4338: }
4339: return $currentstring;
4340: }
4341:
4342: sub end_tbody {
4343: my ($target,$token) = @_;
4344: my $currentstring = '';
4345: if ($target eq 'web' || $target eq 'webgrade') {
4346: $currentstring = $token->[2];
4347: }
4348: return $currentstring;
4349: }
4350:
4351: #-- <tfoot> tag (end tag optional)
4352: sub start_tfoot {
4353: my ($target,$token) = @_;
4354: my $currentstring = '';
4355: if ($target eq 'web' || $target eq 'webgrade') {
4356: $currentstring = $token->[4];
4357: }
4358: return $currentstring;
4359: }
4360:
4361: sub end_tfoot {
4362: my ($target,$token) = @_;
4363: my $currentstring = '';
4364: if ($target eq 'web' || $target eq 'webgrade') {
4365: $currentstring = $token->[2];
4366: }
4367: return $currentstring;
4368: }
4369:
4370: #-- <thead> tag (end tag optional)
4371: sub start_thead {
4372: my ($target,$token) = @_;
4373: my $currentstring = '';
4374: if ($target eq 'web' || $target eq 'webgrade') {
4375: $currentstring = $token->[4];
4376: }
4377: return $currentstring;
4378: }
4379:
4380: sub end_thead {
4381: my ($target,$token) = @_;
4382: my $currentstring = '';
4383: if ($target eq 'web' || $target eq 'webgrade') {
4384: $currentstring = $token->[2];
4385: }
4386: return $currentstring;
4387: }
4388:
4389: #-- <var> tag
4390: sub start_var {
4391: my ($target,$token) = @_;
4392: my $currentstring = '';
4393: if ($target eq 'web' || $target eq 'webgrade') {
4394: $currentstring = $token->[4];
4395: } elsif ($target eq 'tex') {
4396: $currentstring = '\textit{';
4397: }
4398: return $currentstring;
4399: }
4400:
4401: sub end_var {
4402: my ($target,$token) = @_;
4403: my $currentstring = '';
4404: if ($target eq 'web' || $target eq 'webgrade') {
4405: $currentstring = $token->[2];
4406: } elsif ($target eq 'tex') {
4407: $currentstring = '}';
4408: }
4409: return $currentstring;
4410: }
4411:
4412: #-- <wbr> tag (end tag forbidden)
4413: sub start_wbr {
4414: my ($target,$token) = @_;
4415: my $currentstring = '';
4416: if ($target eq 'web' || $target eq 'webgrade') {
4417: $currentstring = $token->[4];
4418: }
4419: return $currentstring;
4420: }
4421:
4422: sub end_wbr {
4423: my ($target,$token) = @_;
4424: my $currentstring = '';
4425: if ($target eq 'web' || $target eq 'webgrade') {
4426: $currentstring = $token->[2];
4427: }
4428: return $currentstring;
4429: }
4430:
4431: #-- <hideweboutput> tag
4432: sub start_hideweboutput {
4433: my ($target,$token) = @_;
4434: if ($target eq 'web' || $target eq 'webgrade') {
4435: &Apache::lonxml::startredirection();
4436: }
4437: return '';
4438: }
4439:
4440: sub end_hideweboutput {
4441: my ($target,$token) = @_;
4442: my $currentstring = '';
4443: if ($target eq 'web' || $target eq 'webgrade') {
4444: $currentstring = &Apache::lonxml::endredirection();
4445: }
4446: return '';
4447: }
4448:
4449:
4450: sub image_replication {
4451: my $src = shift;
4452: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4453: #replicates eps or ps
4454: my $epssrc = my $pssrc = $src;
4455: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4456: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4457: if (not -e $epssrc && not -e $pssrc) {
4458: my $result=&Apache::lonnet::repcopy($epssrc);
4459: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4460: }
4461: return '';
4462: }
4463:
4464:
4465:
4466: sub resize_image {
4467: my ($height_param, $width_param, $scaling,
4468: $parstack, $safeeval, $depth, $cis) = @_;
4469:
4470: # First apply the scaling...
4471:
4472: $height_param = $height_param * $scaling;
4473: $width_param = $width_param * $scaling;
4474:
4475: #do we have any specified LaTeX size of the picture?
4476: my $toget='TeXwidth';
4477: if ($cis) {
4478: $toget=lc($toget);
4479: }
4480: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4481: $safeeval,$depth,$cis);
4482: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4483: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4484: $safeeval,$depth,$cis);
4485: #do we have any specified web size of the picture?
4486: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4487: $depth,1);
4488: if ($TeXwidth) {
4489: my $old_width_param=$width_param;
4490: if ($TeXwidth=~/(\d+)\s*\%/) {
4491: $width_param = $1*$env{'form.textwidth'}/100;
4492: } else {
4493: $width_param = $TeXwidth;
4494: }
4495: if ($TeXheight) {
4496: $height_param = $TeXheight;
4497: } elsif ($old_width_param) {
4498: $height_param=$TeXwidth/$old_width_param*$height_param;
4499: }
4500: } elsif ($TeXheight) {
4501: $height_param = $TeXheight;
4502: if ($height_param) {
4503: $width_param = $TeXheight/$height_param*$width_param;
4504: }
4505: } elsif ($width) {
4506: my $old_width_param=$width_param;
4507: $width_param = $width*$scaling;
4508: if ($old_width_param) {
4509: $height_param=$width_param/$old_width_param*$height_param;
4510: }
4511: }
4512: if ($width_param > $env{'form.textwidth'}) {
4513: my $old_width_param=$width_param;
4514: $width_param =0.95*$env{'form.textwidth'};
4515: if ($old_width_param) {
4516: $height_param=$width_param/$old_width_param*$height_param;
4517: }
4518: }
4519:
4520: return ($height_param, $width_param);
4521: }
4522:
4523: sub image_size {
4524: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4525:
4526: #size of image from gif/jpg/jpeg/png
4527: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4528: if (-e $ressrc) {
4529: $src = $ressrc;
4530: }
4531: my $image = Image::Magick->new;
4532: my $current_figure = $image->Read($src);
4533: my $width_param = $image->Get('width');
4534: my $height_param = $image->Get('height');
4535: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4536: undef($image);
4537:
4538: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4539: $scaling, $parstack, $safeeval,
4540: $depth, $cis);
4541:
4542: return ($height_param, $width_param);
4543: }
4544:
4545: sub image_width {
4546: my ($height, $width) = &image_size(@_);
4547: return $width;
4548: }
4549: # Not yet 100% sure this is correct in all circumstances..
4550: # due to my uncertainty about mods to image_size.
4551: #
4552: sub image_height {
4553: my ($height, $width) = &image_size(@_);
4554: return $height;
4555: }
4556:
4557: sub get_eps_image {
4558: my ($src)=@_;
4559: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4560:
4561: # In order to prevent the substitution of the alt text, we need to
4562: # be sure the orig_src file is on system now so:
4563:
4564: if (! -e $orig_src) {
4565: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4566: }
4567: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4568: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4569: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4570: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4571: &Apache::lonxml::debug("Filelocation gives: $src");
4572: if (! -e $src) {
4573: &Apache::lonxml::debug("$src does not exist");
4574: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4575: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4576: #if replication failed try to find ps file
4577: $src=~s/\.eps$/\.ps/;
4578: &Apache::lonxml::debug("Now looking for $src");
4579: #if no ps file try to replicate it.
4580: my $didrepcopy = &Apache::lonnet::repcopy($src);
4581: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4582: if ( (not -e $src) ||
4583: ($didrepcopy ne 'ok')) {
4584: &Apache::lonxml::debug("Failed to find or replicate $src");
4585:
4586: #if replication failed try to produce eps file dynamically
4587: $src=~s/\.ps$/\.eps/;
4588: my $temp_file;
4589: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4590: my $newsrc=$orig_src;
4591: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4592: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4593: print FILE ("$newsrc\n");
4594: close(FILE);
4595: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4596: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4597: if ($sext ne "") { # Put the ext. back in to uniquify.
4598: $src =~ s/\.eps$/$sext.eps/;
4599: }
4600:
4601: }
4602:
4603: }
4604: } else {
4605: # If the postscript file has spaces in its name,
4606: # LaTeX will gratuitiously vomit. Therefore
4607: # queue such files for copy with " " replaced by "_".
4608: # printout.pm will know them by their .ps or .eps extensions.
4609: my $newsrc = $orig_src;
4610: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4611: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4612: print FILE "$src\n";
4613: close FILE;
4614: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4615: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4616: }
4617: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4618: $path =~ s/ /\_/g;
4619: $file =~ s/ /\_/g;
4620: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4621: return ($path.'/',$file);
4622: }
4623:
4624: sub eps_generation {
4625: my ($src,$file,$width_param) = @_;
4626: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4627: my $temp_file = Apache::File->new('>>'.$filename);
4628: print $temp_file "$src\n";
4629: my $newsrc = $src;
4630: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4631: $newsrc=~s{/home/httpd/html/res}{};
4632: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4633: $newsrc=~s{/\./}{/};
4634: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4635: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4636: $newsrc=~s{/home/httpd/lonUsers}{};
4637: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4638: }
4639: if ($newsrc=~m{/userfiles/}) {
4640: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4641: } else {
4642: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4643: }
4644: }
4645:
4646: sub file_path {
4647: my $src=shift;
4648: my ($file,$path);
4649: if ($src =~ m!(.*)/([^/]*)$!) {
4650: $file = $2;
4651: $path = $1.'/';
4652: }
4653: return $file,$path;
4654: }
4655:
4656:
4657: sub recalc {
4658: my $argument = shift;
4659: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4660: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4661: my $value=$1;
4662: my $units=$2;
4663: if ($units eq 'cm') {
4664: $value*=10;
4665: } elsif ($units eq 'in') {
4666: $value*=25.4;
4667: } elsif ($units eq 'pc') {
4668: $value*=(25.4*12/72.27);
4669: } elsif ($units eq 'pt') {
4670: $value*=(25.4/72.27);
4671: }
4672: return $value.' mm';
4673: }
4674:
4675: sub LATEX_length {
4676: my $garbage=shift;
4677: $garbage=~s/^\s+$//;
4678: $garbage=~s/^\s+(\S.*)/$1/;#space before
4679: $garbage=~s/(.*\S)\s+$/$1/;#space after
4680: $garbage=~s/(\s)+/$1/;#only one space
4681: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4682: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4683: $garbage=~s/([^\\])\$/$1/g;#$
4684: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4685: $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;
4686: $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;
4687: $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;
4688: $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;
4689: $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;
4690: $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;
4691: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4692: #remove some other LaTeX command
4693: $garbage=~s|\\(\w+)\\|\\|g;
4694: $garbage=~s|\\(\w+)(\s*)|$2|g;
4695: $garbage=~s|\+|11|g;
4696: my $value=length($garbage);
4697: return $value;
4698: }
4699:
4700:
4701: sub align_latex_image {
4702: my ($align, $latex_rendering, $image, $width, $height) = @_;
4703: my $currentstring; # The 1/2 wrapped image.
4704: my $closure; # The closure of the wrappage.
4705:
4706: # if it's none just return it back
4707: if ($latex_rendering eq 'none') {
4708: return ($image,'');
4709: }
4710:
4711: # If there's an alignment specification we need to honor it here.
4712: # For the horizontal alignments, we will also honor the
4713: # value of the latex specfication. The default is parbox,
4714: # and that's used for illegal values too.
4715: #
4716: # Even though we set a default alignment value, the user
4717: # could have given us an illegal value. In that case we
4718: # just use the default alignment of bottom..
4719: $currentstring = "\n% figurewrapping \n";
4720: if ($align eq "top") {
4721: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4722: $closure = '}';
4723: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4724: my $offset = $height/2;
4725: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4726: $closure = '}';
4727: } elsif ($align eq "left") {
4728: if ($latex_rendering eq "parpic") {
4729: $currentstring .= '\parpic[l]{'.$image;
4730: $closure = '}';
4731: } elsif ($latex_rendering eq "parbox") {
4732: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4733: .$image;
4734: $closure = '\end{minipage}';
4735: } elsif ($latex_rendering eq "wrapfigure"
4736: || $latex_rendering ne 'none') { # wrapfig render
4737: $currentstring .=
4738: '\begin{wrapfigure}{l}{'.$width.'mm}'
4739: .'\scalebox{1.0}{'.$image;
4740: $closure = '}\end{wrapfigure}';
4741: }
4742: } elsif ($align eq "right") {
4743: if ($latex_rendering eq "parpic") {
4744: $currentstring .= '\parpic[r]{'.$image;
4745: $closure = '}';
4746: } elsif ($latex_rendering eq "parbox") {
4747: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4748: .$image;
4749: $closure = '\end{minipage}';
4750: } elsif ($latex_rendering eq "wrapfigure"
4751: || $latex_rendering ne 'none') { # wrapfig render
4752: $currentstring .=
4753: '\begin{wrapfigure}{r}{'.$width.'mm}'
4754: .'\scalebox{1.0}{'.$image;
4755: $closure = '}\end{wrapfigure}';
4756: }
4757: } else { # Bottom is also default.
4758: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4759: $currentstring .= "{$image";
4760: $closure = '}';
4761: }
4762: $currentstring .= "\n% end wrappage\n";
4763: $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
4764: return ($currentstring, $closure);
4765: }
4766:
4767:
4768: sub is_inside_of {
4769: my ($tagstack, $tag) = @_;
4770: my @stack = @$tagstack;
4771: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4772: if ($stack[$i] eq $tag) {
4773: return 1;
4774: }
4775: }
4776: return 0;
4777: }
4778:
4779:
4780: #
4781: # This sub provides the typical LaTeX prefix matter for tex output:
4782: #
4783: sub latex_header
4784: {
4785: my $currentstring = '';
4786:
4787: $currentstring .=
4788: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4789: if (($env{'form.latex_type'}=~'batchmode') ||
4790: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
4791: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4792: '\renewcommand{\deg}{$^{\circ}$}'.
4793: '\usepackage{multirow}'.
4794: '\usepackage{longtable}'.
4795: '\usepackage{textcomp}'.
4796: '\usepackage{makeidx}'.
4797: '\usepackage[dvips]{graphicx}'.
4798: '\usepackage{wrapfig}'.
4799: '\usepackage{picins}'.
4800: '\usepackage[T1]{fontenc}'."\n".
4801: '\usepackage{lmodern}'."\n".
4802: '\usepackage[postscript]{ucs}'."\n".
4803: '\usepackage[utf8x]{inputenc}'."\n".
4804: '\usepackage{pifont}' ."\n".
4805: '\usepackage{latexsym}'."\n".
4806: '\usepackage{epsfig}'.
4807: "\\usepackage{xtab}\n".
4808: "\\usepackage{tabularx}\n".
4809: "\\usepackage{booktabs}\n".
4810: "\\usepackage{array}\n".
4811: "\\usepackage{colortbl}\n".
4812: "\\usepackage{xcolor}\n".
4813: '\usepackage{calc}'.
4814: '\usepackage{amsmath}'.
4815: '\usepackage{amssymb}'.
4816: '\usepackage{amsfonts}'.
4817: '\usepackage{amsthm}'.
4818: '\usepackage{amscd}';
4819:
4820: if($env{'form.pdfFormFields'} eq 'yes') {
4821: $currentstring .= '\usepackage{hyperref}'.
4822: '\usepackage{eforms}'.
4823: '\usepackage{tabularx}';
4824: }
4825:
4826: $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}}'.
4827: '\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}}';
4828:
4829: return $currentstring;
4830:
4831: }
4832:
4833: =pod
4834:
4835: =head1 NAME
4836:
4837: Apache::londefdef.pm
4838:
4839: =head1 SYNOPSIS
4840:
4841: Tags Default Definition Module
4842:
4843: This is part of the LearningOnline Network with CAPA project
4844: described at http://www.lon-capa.org.
4845:
4846:
4847: =head1 NOTABLE SUBROUTINES
4848:
4849: =over
4850:
4851: =item start_hideweboutput()
4852:
4853: =item end_hideweboutput()
4854:
4855: =item image_replication()
4856:
4857: =item resize_image()
4858:
4859: Get correct sizing parameter for an image given
4860: it's initial ht. and wid. This allows sizing of
4861: images that are generated on-the-fly (e.g. gnuplot)
4862: as well as serving as a utility for image_size.
4863:
4864: Parameter:
4865: height_param
4866: width_param - Initial picture dimensions.
4867: scaling - A scale factor.
4868: parstack, - the current stack of tag attributes
4869: from the xml parser
4870: safeeval, - pointer to the safespace
4871: depth, - from what level in the stack to look for attributes
4872: (assumes -1 if unspecified)
4873: cis - look for attrubutes case insensitively
4874: (assumes false)
4875:
4876: Returns:
4877: height, width - new dimensions.
4878:
4879: =item image_size()
4880:
4881: =item image_width()
4882:
4883: =item image_height()
4884:
4885: =item get_eps_image()
4886:
4887: =item eps_generation()
4888:
4889: =item file_path()
4890:
4891: =item recalc()
4892:
4893: Converts a measurement in to mm from any of
4894: the other valid LaTeX units of measure.
4895: If the units of measure are missing from the
4896: parameter, it is assumed to be in and returned
4897: with mm units of measure
4898:
4899: =item LATEX_length()
4900:
4901: =item align_latex_image()
4902:
4903: Wrap image 'stuff' inside of the LaTeX required to implement
4904: alignment:
4905: align_tex_image(align, latex_rendering, image)
4906: Where:
4907: align - The HTML alignment specification.
4908: latex_rendering - rendering hint for latex.
4909: image - The LaTeX needed to insert the image itsef.
4910: width,height - dimensions of the image.
4911: Returns:
4912: The 1/2 wrapped image and the stuff required to close the
4913: wrappage. This allows e.g. randomlabel to insert more stuff
4914: into the closure.
4915:
4916:
4917: =item is_inside_of($tagstack, $tag)
4918: This sub returns true if the current state of Xml processing is inside of the tag.
4919: Parameters:
4920: tagstack - The tagstack from the parser.
4921: tag - The tag (without the <>'s.).
4922: Sample usage:
4923: if (is_inside_of($tagstack "table")) {
4924: I'm in a table....
4925: }
4926:
4927:
4928:
4929: =back
4930:
4931: =cut
4932:
4933:
4934: 1;
4935: __END__
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