1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.417 2010/06/10 15:54:06 bisitz Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Apache::File();
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: # Breadcrumbs
542: &Apache::lonhtmlcommon::clear_breadcrumbs();
543: if ($env{'request.state'} eq 'construct') {
544: &Apache::lonhtmlcommon::add_breadcrumb({
545: 'text' => 'Construction Space',
546: 'href' => &Apache::loncommon::authorspace(),
547: });
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'HTML Editor',
550: 'href' => '',
551: });
552: # breadcrumbs (and tools) will be created
553: # in start_page->bodytag->innerregister
554: } else {
555: # FIXME Where are we?
556: }
557:
558: $currentstring =
559: &Apache::loncommon::start_page($Apache::londefdef::title,
560: $Apache::londefdef::head
561: .$extra_head,
562: {'add_entries' => $token->[2],
563: # 'no_title' => 1,
564: 'force_register' => 1});
565:
566: my $header = '';
567: if ($env{'request.state'} ne 'published' &&
568: $env{'request.state'} ne 'construct') {
569: $header=&Apache::lonmenu::constspaceform();
570: }
571: if ($env{'request.state'} ne 'published') {
572: $header.=&Apache::londefdef::edit_controls();
573: }
574: if ($env{'request.state'} eq 'construct') {
575: $currentstring.=&Apache::loncommon::head_subbox(
576: &Apache::loncommon::CSTR_pageheader()
577: .$header);
578: } elsif ($env{'request.state'} eq 'edit') {
579: $currentstring.=&Apache::loncommon::head_subbox($header);
580: }
581: $currentstring.=&Apache::lonxml::message_location();
582: } elsif ($target eq 'tex') {
583: $currentstring = ''; # '\begin{document}' is in header.
584: }
585:
586: return $currentstring;
587: }
588:
589: sub edit_controls {
590: my ($nochgview) = @_;
591: my $result .= '
592: <form method="post">
593: <div class="LC_edit_problem_header">';
594: unless ($nochgview) {
595: $result .= '
596: <div class="LC_edit_problem_header_row1">'.
597: &Apache::lonxml::renderingoptions().'
598: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
599: </div>';
600: }
601: $result .= '
602: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
603: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
604: $result .= (' ' x 3).'<input type="button" value="'.&mt('Course View').'" onclick="javascript:location.href=currentURL" />';
605: }
606: $result .= '</div>
607: </div>
608: </form>
609: ';
610: return $result;
611: }
612:
613: sub end_body {
614: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
615: my $currentstring = &end_p(); # Close off unclosed <p>
616: if ($target eq 'web' || $target eq 'webgrade') {
617: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
618: } elsif ($target eq 'tex') {
619: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
620: }
621: return $currentstring;
622: }
623:
624: # \begin{center} causes a new paragprah spacing that looks odd inside
625: # of a table cell. Same at the end of a \center but with a slightly
626: # larger space .. hence center_correction and center_end_correction.
627: #
628: sub center_correction { return '\vspace*{-6 mm}'; }
629: sub center_end_correction { return '\vspace*{-7 mm}'; }
630:
631: #-- <center> tag (end tag required)
632: sub start_center {
633: my ($target,$token,$tagstack) = @_;
634: my $currentstring = &end_p(); # Close off any prior para.
635: if ($target eq 'web' || $target eq 'webgrade') {
636: $currentstring .= $token->[4];
637: } elsif ($target eq 'tex') {
638: if (&is_inside_of($tagstack, "table")) {
639: $currentstring .= ¢er_correction();
640: }
641: $currentstring .= '\begin{center}';
642: }
643: return $currentstring;
644: }
645:
646: sub end_center {
647: my ($target,$token,$tagstack) = @_;
648: my $currentstring = '';
649: if ($target eq 'web' || $target eq 'webgrade') {
650: $currentstring = $token->[2];
651: } elsif ($target eq 'tex') {
652: $currentstring = '\end{center}';
653: if (&is_inside_of($tagstack, "table")) {
654: $currentstring .= ¢er_end_correction();
655: }
656: }
657: return $currentstring;
658: }
659:
660: #-- <b> tag (end tag required)
661: # NOTE: In TeX mode disables internal <p>
662: sub start_b {
663: my ($target,$token) = @_;
664: my $currentstring = '';
665: if ($target eq 'web' || $target eq 'webgrade') {
666: $currentstring = $token->[4];
667: } elsif ($target eq 'tex') {
668: &disable_para();
669: $currentstring .= '\textbf{';
670: }
671: return $currentstring;
672: }
673:
674: sub end_b {
675: my ($target,$token) = @_;
676: my $currentstring = '';
677: if ($target eq 'web' || $target eq 'webgrade') {
678: $currentstring = $token->[2];
679: } elsif ($target eq 'tex') {
680: &enable_para();
681: $currentstring = '}';
682: }
683: return $currentstring;
684: }
685:
686: #-- <strong> tag (end tag required)
687: # NOTE: in TeX mode disables internal <p>
688: sub start_strong {
689: my ($target,$token) = @_;
690: my $currentstring = '';
691: if ($target eq 'web' || $target eq 'webgrade') {
692: $currentstring = $token->[4];
693: } elsif ($target eq 'tex') {
694: &disable_para();
695: $currentstring = '\textbf{';
696: }
697: return $currentstring;
698: }
699:
700: sub end_strong {
701: my ($target,$token) = @_;
702: my $currentstring = '';
703: if ($target eq 'web' || $target eq 'webgrade') {
704: $currentstring = $token->[2];
705: } elsif ($target eq 'tex') {
706: &enable_para();
707: $currentstring = '}';
708: }
709: return $currentstring;
710: }
711:
712: #-- <h1> tag (end tag required)
713: sub start_h1 {
714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
715: my $currentstring = &end_p(); # Close off any prior para.
716: if ($target eq 'web' || $target eq 'webgrade') {
717: $currentstring .= $token->[4];
718: } elsif ($target eq 'tex') {
719: my $pre;
720: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
721: if ($align eq 'center') {
722: $pre='\begin{center}';
723: } elsif ($align eq 'left') {
724: $pre='\rlap{';
725: } elsif ($align eq 'right') {
726: $pre=' \hfill \llap{';
727: }
728: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
729: if (not defined $TeXsize) {$TeXsize="large";}
730: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
731: } elsif ($target eq 'meta') {
732: $currentstring.='<subject>';
733: &start_output($target);
734: }
735: return $currentstring;
736: }
737:
738: sub end_h1 {
739: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
740: my $currentstring = '';
741: if ($target eq 'web' || $target eq 'webgrade') {
742: $currentstring .= $token->[2];
743: } elsif ($target eq 'tex') {
744: my $post='\vskip 0 mm ';
745: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
746: if ($align eq 'center') {
747: $post='\end{center}';
748: } elsif ($align eq 'left') {
749: $post='} \hfill'.'\vskip 0 mm ';
750: } elsif ($align eq 'right') {
751: $post='}'.'\vskip 0 mm ';
752: }
753: $currentstring .= '}}'.$post;
754: } elsif ($target eq 'meta') {
755: &end_output($target);
756: $currentstring='</subject>';
757: }
758: return $currentstring;
759: }
760:
761: #-- <h2> tag
762: sub start_h2 {
763: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
764: my $currentstring = &end_p(); # Close off any prior para.
765: if ($target eq 'web' || $target eq 'webgrade') {
766: $currentstring .= $token->[4];
767: } elsif ($target eq 'tex') {
768: my $pre;
769: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
770: if ($align eq 'center') {
771: $pre='\begin{center}';
772: } elsif ($align eq 'left') {
773: $pre='\rlap{';
774: } elsif ($align eq 'right') {
775: $pre=' \hfill \llap{';
776: }
777: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
778: if (not defined $TeXsize) {$TeXsize="large";}
779: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
780: }
781: return $currentstring;
782: }
783:
784: sub end_h2 {
785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
786: my $currentstring = '';
787: if ($target eq 'web' || $target eq 'webgrade') {
788: $currentstring .= $token->[2];
789: } elsif ($target eq 'tex') {
790: my $post='\vskip 0 mm ';
791: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
792: if ($align eq 'center') {
793: $post='\end{center}';
794: } elsif ($align eq 'left') {
795: $post='} \hfill'.'\vskip 0 mm ';
796: } elsif ($align eq 'right') {
797: $post='}'.'\vskip 0 mm ';
798: }
799: $currentstring .= '}}'.$post;
800: }
801: return $currentstring;
802: }
803:
804: #-- <h3> tag
805: sub start_h3 {
806: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
807: my $currentstring = &end_p(); # Close off any prior para.
808: if ($target eq 'web' || $target eq 'webgrade') {
809: $currentstring .= $token->[4];
810: } elsif ($target eq 'tex') {
811: my $pre;
812: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
813: if ($align eq 'center') {
814: $pre='\begin{center}';
815: } elsif ($align eq 'left') {
816: $pre='\rlap{';
817: } elsif ($align eq 'right') {
818: $pre=' \hfill \llap{';
819: }
820: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
821: if (not defined $TeXsize) {$TeXsize="large";}
822: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
823: }
824: return $currentstring;
825: }
826:
827: sub end_h3 {
828: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
829: my $currentstring = '';
830: if ($target eq 'web' || $target eq 'webgrade') {
831: $currentstring .= $token->[2];
832: } elsif ($target eq 'tex') {
833: my $post='\vskip 0 mm ';
834: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
835: if ($align eq 'center') {
836: $post='\end{center}';
837: } elsif ($align eq 'left') {
838: $post='} \hfill'.'\vskip 0 mm ';
839: } elsif ($align eq 'right') {
840: $post='}'.'\vskip 0 mm ';
841: }
842: $currentstring .= '}}'.$post;
843: }
844: return $currentstring;
845: }
846:
847: #-- <h4> tag
848: sub start_h4 {
849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
850: my $currentstring = &end_p(); # Close off any prior para.
851: if ($target eq 'web' || $target eq 'webgrade') {
852: $currentstring .= $token->[4];
853: } elsif ($target eq 'tex') {
854: my $pre;
855: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
856: if ($align eq 'center') {
857: $pre='\begin{center}';
858: } elsif ($align eq 'left') {
859: $pre='\rlap{';
860: } elsif ($align eq 'right') {
861: $pre=' \hfill \llap{';
862: }
863: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
864: if (not defined $TeXsize) {$TeXsize="large";}
865: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
866: }
867: return $currentstring;
868: }
869:
870: sub end_h4 {
871: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
872: my $currentstring = '';
873: if ($target eq 'web' || $target eq 'webgrade') {
874: $currentstring .= $token->[2];
875: } elsif ($target eq 'tex') {
876: my $post='\vskip 0 mm ';
877: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
878: if ($align eq 'center') {
879: $post='\end{center}';
880: } elsif ($align eq 'left') {
881: $post='} \hfill'.'\vskip 0 mm ';
882: } elsif ($align eq 'right') {
883: $post='}'.'\vskip 0 mm ';
884: }
885: $currentstring .= '}}'.$post;
886: }
887: return $currentstring;
888: }
889:
890: #-- <h5> tag
891: sub start_h5 {
892: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
893: my $currentstring = &end_p(); # Close off any prior paras.
894: if ($target eq 'web' || $target eq 'webgrade') {
895: $currentstring .= $token->[4];
896: } elsif ($target eq 'tex') {
897: my $pre;
898: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
899: if ($align eq 'center') {
900: $pre='\begin{center}';
901: } elsif ($align eq 'left') {
902: $pre='\rlap{';
903: } elsif ($align eq 'right') {
904: $pre=' \hfill \llap{';
905: }
906: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
907: if (not defined $TeXsize) {$TeXsize="large";}
908: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
909: }
910: return $currentstring;
911: }
912:
913: sub end_h5 {
914: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
915: my $currentstring = '';
916: if ($target eq 'web' || $target eq 'webgrade') {
917: $currentstring .= $token->[2];
918: } elsif ($target eq 'tex') {
919: my $post='\vskip 0 mm ';
920: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
921: if ($align eq 'center') {
922: $post='\end{center}';
923: } elsif ($align eq 'left') {
924: $post='} \hfill'.'\vskip 0 mm ';
925: } elsif ($align eq 'right') {
926: $post='}'.'\vskip 0 mm ';
927: }
928: $currentstring .= '}}'.$post;
929: }
930: return $currentstring;
931: }
932:
933: #-- <h6> tag
934: sub start_h6 {
935: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
936: my $currentstring = &end_p(); # Close off any prior paras.
937: if ($target eq 'web' || $target eq 'webgrade') {
938: $currentstring .= $token->[4];
939: } elsif ($target eq 'tex') {
940: my $pre;
941: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
942: if ($align eq 'center') {
943: $pre='\begin{center}';
944: } elsif ($align eq 'left') {
945: $pre='\rlap{';
946: } elsif ($align eq 'right') {
947: $pre=' \hfill \llap{';
948: }
949: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
950: if (not defined $TeXsize) {$TeXsize="large";}
951: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
952: }
953: return $currentstring;
954: }
955:
956: sub end_h6 {
957: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
958: my $currentstring = '';
959: if ($target eq 'web' || $target eq 'webgrade') {
960: $currentstring .= $token->[2];
961: } elsif ($target eq 'tex') {
962: my $post='\vskip 0 mm ';
963: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
964: if ($align eq 'center') {
965: $post='\end{center}';
966: } elsif ($align eq 'left') {
967: $post='} \hfill'.'\vskip 0 mm ';
968: } elsif ($align eq 'right') {
969: $post='}'.'\vskip 0 mm ';
970: }
971: $currentstring .= '}}'.$post;
972: }
973: return $currentstring;
974: }
975:
976: #--- <cite> tag (end tag required)
977: sub start_cite {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web' || $target eq 'webgrade') {
981: $currentstring .= $token->[4];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '\textit{';
984: }
985: return $currentstring;
986: }
987:
988: sub end_cite {
989: my ($target,$token) = @_;
990: my $currentstring = '';
991: if ($target eq 'web' || $target eq 'webgrade') {
992: $currentstring .= $token->[2];
993: } elsif ($target eq 'tex') {
994: $currentstring .= '}';
995: }
996: return $currentstring;
997: }
998:
999: #-- <i> tag (end tag required)
1000: sub start_i {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web' || $target eq 'webgrade') {
1004: $currentstring .= $token->[4];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '\textit{';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: sub end_i {
1012: my ($target,$token) = @_;
1013: my $currentstring = '';
1014: if ($target eq 'web' || $target eq 'webgrade') {
1015: $currentstring .= $token->[2];
1016: } elsif ($target eq 'tex') {
1017: $currentstring .= '}';
1018: }
1019: return $currentstring;
1020: }
1021:
1022: #-- <address> tag (end tag required)
1023: sub start_address {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web' || $target eq 'webgrade') {
1027: $currentstring .= $token->[4];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '\textit{';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: sub end_address {
1035: my ($target,$token) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web' || $target eq 'webgrade') {
1038: $currentstring .= $token->[2];
1039: } elsif ($target eq 'tex') {
1040: $currentstring .= '}';
1041: }
1042: return $currentstring;
1043: }
1044:
1045: #-- <dfn> tag (end tag required)
1046: sub start_dfn {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web' || $target eq 'webgrade') {
1050: $currentstring .= $token->[4];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '\textit{';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: sub end_dfn {
1058: my ($target,$token) = @_;
1059: my $currentstring = '';
1060: if ($target eq 'web' || $target eq 'webgrade') {
1061: $currentstring .= $token->[2];
1062: } elsif ($target eq 'tex') {
1063: $currentstring .= '}';
1064: }
1065: return $currentstring;
1066: }
1067:
1068: #-- <tt> tag (end tag required)
1069: sub start_tt {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: $currentstring .= $token->[4];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '\texttt{';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: sub end_tt {
1081: my ($target,$token) = @_;
1082: my $currentstring = '';
1083: if ($target eq 'web' || $target eq 'webgrade') {
1084: $currentstring .= $token->[2];
1085: } elsif ($target eq 'tex') {
1086: $currentstring .= '}';
1087: }
1088: return $currentstring;
1089: }
1090:
1091: #-- <kbd> tag (end tag required)
1092: sub start_kbd {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web' || $target eq 'webgrade') {
1096: $currentstring .= $token->[4];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '\texttt{';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: sub end_kbd {
1104: my ($target,$token) = @_;
1105: my $currentstring = '';
1106: if ($target eq 'web' || $target eq 'webgrade') {
1107: $currentstring .= $token->[2];
1108: } elsif ($target eq 'tex') {
1109: $currentstring .= '}';
1110: }
1111: return $currentstring;
1112: }
1113:
1114: #-- <code> tag (end tag required)
1115: sub start_code {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web' || $target eq 'webgrade') {
1119: $currentstring .= $token->[4];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '\texttt{';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: sub end_code {
1127: my ($target,$token) = @_;
1128: my $currentstring = '';
1129: if ($target eq 'web' || $target eq 'webgrade') {
1130: $currentstring .= $token->[2];
1131: } elsif ($target eq 'tex') {
1132: $currentstring .= '}';
1133: }
1134: return $currentstring;
1135: }
1136:
1137: #-- <em> tag (end tag required)
1138: sub start_em {
1139: my ($target,$token) = @_;
1140: my $currentstring = '';
1141: if ($target eq 'web' || $target eq 'webgrade') {
1142: $currentstring .= $token->[4];
1143: } elsif ($target eq 'tex') {
1144: $currentstring .= '\emph{';
1145: }
1146: return $currentstring;
1147: }
1148:
1149: sub end_em {
1150: my ($target,$token) = @_;
1151: my $currentstring = '';
1152: if ($target eq 'web' || $target eq 'webgrade') {
1153: $currentstring .= $token->[2];
1154: } elsif ($target eq 'tex') {
1155: $currentstring .= '}';
1156: }
1157: return $currentstring;
1158: }
1159:
1160: #-- <q> tag (end tag required)
1161: sub start_q {
1162: my ($target,$token) = @_;
1163: my $currentstring = '';
1164: if ($target eq 'web' || $target eq 'webgrade') {
1165: $currentstring .= $token->[4];
1166: } elsif ($target eq 'tex') {
1167: $currentstring .= '\emph{';
1168: }
1169: return $currentstring;
1170: }
1171:
1172: sub end_q {
1173: my ($target,$token) = @_;
1174: my $currentstring = '';
1175: if ($target eq 'web' || $target eq 'webgrade') {
1176: $currentstring .= $token->[2];
1177: } elsif ($target eq 'tex') {
1178: $currentstring .= '}';
1179: }
1180: return $currentstring;
1181: }
1182:
1183: # <p> is a bit strange since it does not require a closing </p>
1184: # However in latex, we must often output closing stuff to end
1185: # environments and {}'s etc. Therefore we do all the work
1186: # of figuring out the ending strings in the start tag processing,
1187: # and provide a mechanism to output the stop text external
1188: # to tag processing.
1189: #
1190: {
1191:
1192: my $closing_string = ''; # String required to close <p>
1193:
1194: # Some tags are <p> fragile meaning that <p> inside of them
1195: # does not work within TeX mode. This is managed via the
1196: # counter below:
1197: #
1198:
1199: my $para_disabled = 0;
1200:
1201: sub disable_para {
1202: $para_disabled++;
1203: }
1204: sub enable_para {
1205: $para_disabled--;
1206: }
1207:
1208:
1209: #-- <p> tag (end tag optional)
1210: #optional attribute - align="center|left|right"
1211: sub start_p {
1212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1213: my $currentstring = '';
1214: if ($target eq 'web' || $target eq 'webgrade') {
1215: $currentstring .= &end_p(); # close off prior para if in progress.
1216: $currentstring .= $token->[4];
1217: if (! ($currentstring =~ /\//)) {
1218: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1219: }
1220: } elsif ($target eq 'tex' && !$para_disabled) {
1221:
1222: $currentstring .= &end_p(); # close off prior para if in progress.
1223: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1224: if ($align eq 'center') {
1225: $currentstring .='\begin{center}\par ';
1226: $closing_string = '\end{center}';
1227: if (&is_inside_of($tagstack, "table")) {
1228: $currentstring = ¢er_correction().$currentstring;
1229: }
1230: } elsif ($align eq 'right') {
1231: $currentstring.="\n".'{\flushright ';
1232: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1233: $closing_string= "}\n";
1234: } elsif ($align eq 'left') {
1235: $currentstring.= "\n".'{\flushleft ';
1236: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1237: $closing_string = "}\n";
1238: } else {
1239: $currentstring.='\par ';
1240: if (&is_inside_of($tagstack, 'table')) {
1241: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1242: } else {
1243: $closing_string = '\strut\\\\\strut ';
1244: }
1245: }
1246:
1247: }
1248: return $currentstring;
1249: }
1250: #
1251: # End paragraph processing just requires that we output the
1252: # closing string that was saved and blank it.
1253: sub end_p {
1254: # Note only 'tex' mode uses disable_para and enable_para
1255: # so we don't need to know the target in the check below:
1256:
1257: if (!$para_disabled) {
1258: my $current_string = $closing_string;
1259: $closing_string = ''; # Not in a para anymore.
1260: return $current_string;
1261: } else {
1262: return '';
1263: }
1264:
1265: }
1266: }
1267: #-- <br> tag (end tag forbidden)
1268: sub start_br {
1269: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1270: my $currentstring = '';
1271: if ($target eq 'web' || $target eq 'webgrade') {
1272: $currentstring .= $token->[4];
1273: } elsif ($target eq 'tex') {
1274: my @tempo=@$tagstack;
1275: my $signal=0;
1276: # Not going to factor this to is_inside_of since that would require
1277: # multiple stack traversals.
1278: #
1279: for (my $i=$#tempo;$i>=0;$i--) {
1280: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1281: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1282: $signal=1;
1283: }
1284: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1285: $signal = 1;
1286: }
1287: }
1288: if ($signal != 1) {
1289: $currentstring .= '\strut \\\\ \strut ';
1290: }
1291:
1292: }
1293: return $currentstring;
1294: }
1295:
1296: sub end_br {
1297: my ($target,$token) = @_;
1298: my $currentstring = '';
1299: if ($target eq 'web' || $target eq 'webgrade') {
1300: $currentstring .= $token->[2];
1301: }
1302: return $currentstring;
1303: }
1304:
1305: #-- <big> tag (end tag required)
1306: sub start_big {
1307: my ($target,$token) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring .= $token->[4];
1311: } elsif ($target eq 'tex') {
1312: $currentstring .= '{\large ';
1313: }
1314: return $currentstring;
1315: }
1316:
1317: sub end_big {
1318: my ($target,$token) = @_;
1319: my $currentstring = '';
1320: if ($target eq 'web' || $target eq 'webgrade') {
1321: $currentstring .= $token->[2];
1322: } elsif ($target eq 'tex') {
1323: $currentstring .= '}';
1324: }
1325: return $currentstring;
1326: }
1327:
1328: #-- <small> tag (end tag required)
1329: sub start_small {
1330: my ($target,$token) = @_;
1331: my $currentstring = '';
1332: if ($target eq 'web' || $target eq 'webgrade') {
1333: $currentstring .= $token->[4];
1334: } elsif ($target eq 'tex') {
1335: $currentstring .= '{\footnotesize ';
1336: }
1337: return $currentstring;
1338: }
1339:
1340: sub end_small {
1341: my ($target,$token) = @_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring .= $token->[2];
1345: } elsif ($target eq 'tex') {
1346: $currentstring .= '}';
1347: }
1348: return $currentstring;
1349: }
1350:
1351: #-- <basefont> tag (end tag forbidden)
1352: sub start_basefont {
1353: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1354: my $currentstring = '';
1355: if ($target eq 'web' || $target eq 'webgrade') {
1356: $currentstring = $token->[4];
1357: } elsif ($target eq 'tex') {
1358: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1359: if (defined $basesize) {
1360: $currentstring = '{\\'.$basesize.' ';
1361: }
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_basefont {
1367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring = $token->[4];
1371: } elsif ($target eq 'tex') {
1372: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1373: if (defined $basesize) {
1374: $currentstring = '}';
1375: }
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <font> tag (end tag required)
1381: sub start_font {
1382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1386: $currentstring = $token->[4];
1387: } elsif ($target eq 'tex') {
1388: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1389: if (defined $fontsize) {
1390: $currentstring = '{\\'.$fontsize.' ';
1391: }
1392: }
1393: return $currentstring;
1394: }
1395:
1396: sub end_font {
1397: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1398: my $currentstring = '';
1399: if ($target eq 'web' || $target eq 'webgrade') {
1400: $currentstring = $token->[2];
1401: } elsif ($target eq 'tex') {
1402: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1403: if (defined $fontsize) {
1404: $currentstring = '}';
1405: }
1406: }
1407: return $currentstring;
1408: }
1409:
1410: #-- <strike> tag (end tag required)
1411: sub start_strike {
1412: my ($target,$token) = @_;
1413: my $currentstring = '';
1414: if ($target eq 'web' || $target eq 'webgrade') {
1415: $currentstring .= $token->[4];
1416: } elsif ($target eq 'tex') {
1417: &Apache::lonxml::startredirection();
1418: }
1419: return $currentstring;
1420: }
1421:
1422: sub end_strike {
1423: my ($target,$token) = @_;
1424: my $currentstring = '';
1425: if ($target eq 'web' || $target eq 'webgrade') {
1426: $currentstring .= $token->[2];
1427: } elsif ($target eq 'tex') {
1428: $currentstring=&Apache::lonxml::endredirection();
1429: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1430: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1431: $currentstring=~s/(\S)\s*$/$1\}/;
1432: }
1433: return $currentstring;
1434: }
1435:
1436: #-- <s> tag (end tag required)
1437: sub start_s {
1438: my ($target,$token) = @_;
1439: my $currentstring = '';
1440: if ($target eq 'web' || $target eq 'webgrade') {
1441: $currentstring .= $token->[4];
1442: } elsif ($target eq 'tex') {
1443: &Apache::lonxml::startredirection();
1444: }
1445: return $currentstring;
1446: }
1447:
1448: sub end_s {
1449: my ($target,$token) = @_;
1450: my $currentstring = '';
1451: if ($target eq 'web' || $target eq 'webgrade') {
1452: $currentstring .= $token->[2];
1453: } elsif ($target eq 'tex') {
1454: $currentstring=&Apache::lonxml::endredirection();
1455: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1456: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1457: $currentstring=~s/(\S)\s*$/$1\}/;
1458: }
1459: return $currentstring;
1460: }
1461:
1462: #-- <sub> tag (end tag required)
1463: sub start_sub {
1464: my ($target,$token) = @_;
1465: my $currentstring = '';
1466: if ($target eq 'web' || $target eq 'webgrade') {
1467: $currentstring .= $token->[4];
1468: } elsif ($target eq 'tex') {
1469: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1470: }
1471: return $currentstring;
1472: }
1473:
1474: sub end_sub {
1475: my ($target,$token) = @_;
1476: my $currentstring = '';
1477: if ($target eq 'web' || $target eq 'webgrade') {
1478: $currentstring .= $token->[2];
1479: } elsif ($target eq 'tex') {
1480: $currentstring .= '}}';
1481: }
1482: return $currentstring;
1483: }
1484:
1485: #-- <sup> tag (end tag required)
1486: sub start_sup {
1487: my ($target,$token) = @_;
1488: my $currentstring = '';
1489: if ($target eq 'web' || $target eq 'webgrade') {
1490: $currentstring .= $token->[4];
1491: } elsif ($target eq 'tex') {
1492: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1493: }
1494: return $currentstring;
1495: }
1496:
1497: sub end_sup {
1498: my ($target,$token) = @_;
1499: my $currentstring = '';
1500: if ($target eq 'web' || $target eq 'webgrade') {
1501: $currentstring .= $token->[2];
1502: } elsif ($target eq 'tex') {
1503: $currentstring .= '}}';
1504: }
1505: return $currentstring;
1506: }
1507:
1508: #-- <hr> tag (end tag forbidden)
1509: sub start_hr {
1510: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1511: my $currentstring = &end_p(); # End enclosing para.
1512: if ($target eq 'web' || $target eq 'webgrade') {
1513: $currentstring .= $token->[4];
1514: } elsif ($target eq 'tex') {
1515:
1516: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1517: #
1518: my $restart_sub = 0;
1519: my $restart_sup = 0;
1520:
1521: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1522: # using the start_ stop_ functions.. those tags only care about
1523: # $target.
1524:
1525: if (&is_inside_of($tagstack, "sub")) {
1526: $restart_sub = 1;
1527: $currentstring .= &end_sub($target, $token, $tagstack,
1528: $parstack, $parser, $safeeval);
1529: }
1530: if (&is_inside_of($tagstack, "sup")) {
1531: $restart_sup = 1;
1532: $currentstring .= &end_sup($target, $token, $tagstack,
1533: $parstack, $parser, $safeeval);
1534: }
1535:
1536: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1537: if (defined $LaTeXwidth) {
1538: if ($LaTeXwidth=~/^%/) {
1539: substr($LaTeXwidth,0,1)='';
1540: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1541: }
1542: } else {
1543: $LaTeXwidth ='0.9\textwidth';
1544: }
1545: my ($pre,$post);
1546: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1547: if (($align eq 'center') || (not defined $align)) {
1548: $pre=''; $post='';
1549: } elsif ($align eq 'left') {
1550: $pre='\rlap{'; $post='} \hfill';
1551: } elsif ($align eq 'right') {
1552: $pre=' \hfill \llap{'; $post='}';
1553: }
1554: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1555: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1556: # Turn stuff back on that we can't be inside of.
1557:
1558: if ($restart_sub) {
1559: $currentstring .= &start_sub($target, $token, $tagstack,
1560: $parstack, $parser, $safeeval);
1561: }
1562: if ($restart_sup) {
1563: $currentstring .= &start_sup($target, $token, $tagstack,
1564: $parstack, $parser, $safeeval);
1565: }
1566: }
1567: return $currentstring;
1568: }
1569:
1570: sub end_hr {
1571: my ($target,$token) = @_;
1572: my $currentstring = '';
1573: if ($target eq 'web' || $target eq 'webgrade') {
1574: $currentstring .= $token->[2];
1575: }
1576: return $currentstring;
1577: }
1578:
1579: #-- <div> tag (end tag required)
1580: {
1581:
1582: # Since div can be nested, the stack below is used
1583: # in 'tex' mode to store the ending strings
1584: # for the div stack.
1585:
1586: my @div_end_stack;
1587:
1588: sub start_div {
1589: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1590: my $currentstring = &end_p(); # Close enclosing para.
1591: if ($target eq 'web' || $target eq 'webgrade') {
1592: $currentstring .= $token->[4];
1593: }
1594: if ($target eq 'tex') {
1595: # 4 possible alignments: left, right, center, and -missing-.
1596: # If inside a table row, we must let the table logic
1597: # do the alignment, however.
1598: #
1599:
1600: my $endstring = '';
1601:
1602: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1603: $safeeval, undef, 1));
1604: if ($align eq 'center') {
1605: $currentstring .= '\begin{center}';
1606: $endstring = '\end{center}';
1607: if (&is_inside_of($tagstack, "table")) {
1608: $currentstring = ¢er_correction().$currentstring;
1609: $endstring .= ¢er_end_correction();
1610: }
1611: }
1612: elsif ($align eq 'right') {
1613: $currentstring .= '\begin{flushright}';
1614: $endstring .= '\end{flushright}';
1615: } elsif ($align eq 'left') {
1616: $currentstring .= '\begin{flushleft}';
1617: $endstring = '\end{flushleft}';
1618: } else {
1619:
1620: }
1621: $currentstring .= "\n"; # For human readability.
1622: $endstring = "\n$endstring\n"; # For human readability
1623: push(@div_end_stack, $endstring);
1624: }
1625: return $currentstring;
1626: }
1627:
1628: sub end_div {
1629: my ($target,$token) = @_;
1630: my $currentstring = '';
1631: if ($target eq 'web' || $target eq 'webgrade') {
1632: $currentstring .= $token->[2];
1633: }
1634: if ($target eq 'tex') {
1635: my $endstring = pop @div_end_stack;
1636: $currentstring .= $endstring;
1637: }
1638: return $currentstring;
1639: }
1640: }
1641:
1642: #-- <a> tag (end tag required)
1643: sub start_a {
1644: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1645: my $currentstring = '';
1646: if ($target eq 'web' || $target eq 'webgrade') {
1647: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1648: undef,1);
1649: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1650: if ($href =~ /\S/) {
1651: if ($href !~ m{^https?://}) {
1652: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1653: my $linkurl;
1654: if ($href =~ m{^/uploaded/}) {
1655: $linkurl = $href;
1656: } elsif ($href =~ m{^[^/]}) {
1657: my $path = $url;
1658: $path =~ s{[^/]*$}{};
1659: $linkurl = $path.$href;
1660: }
1661: if ($linkurl =~ m{^/uploaded/}) {
1662: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1663: if (&Apache::lonnet::is_on_map($url)) {
1664: &Apache::lonxml::extlink($linkurl);
1665: }
1666: }
1667: }
1668: }
1669: }
1670: }
1671: return $currentstring;
1672: }
1673:
1674: sub end_a {
1675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1676: my $currentstring = '';
1677: if ($target eq 'web' || $target eq 'webgrade') {
1678: $currentstring .= $token->[2];
1679: }
1680: if ($target eq 'tex') {
1681: my $href =
1682: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1683: my $name =
1684: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1685: my $uriprint =
1686: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1687: my $anchorprint =
1688: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1689: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1690: $href =~ s/([^\\])%/$1\\\%/g;
1691: # Substitute special symbols... and allow line breaks at each /
1692: #
1693: $href = &Apache::lonxml::latex_special_symbols($href);
1694: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1695: $currentstring .= ' ({\tt URI:'.$href.'})';
1696: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1697: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1698: } else {
1699: $currentstring.='';
1700: }
1701: }
1702: return $currentstring;
1703: }
1704:
1705: #-- <li> tag (end tag optional)
1706: sub start_li {
1707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1708: my $currentstring = '';
1709: if ($target eq 'web' || $target eq 'webgrade') {
1710: $currentstring = $token->[4];
1711: } elsif ($target eq 'tex') {
1712: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1713: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1714: #FIXME need to support types i and I
1715: if ($type=~/disc/) {
1716: $currentstring .= ' \item[$\bullet$] ';
1717: } elsif ($type=~/circle/) {
1718: $currentstring .= ' \item[$\circ$] ';
1719: } elsif ($type=~/square/) {
1720: $currentstring .= ' \item[$\diamond$] ';
1721: } elsif ($type eq '1') {
1722: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1723: } elsif ($type eq 'A') {
1724: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1725: } elsif ($type eq 'a') {
1726: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1727: } elsif ($value ne '') {
1728: $currentstring .= ' \item['.$value.'] ';
1729: } else {
1730: $currentstring .= ' \item ';
1731: }
1732: $Apache::londefdef::list_index++;
1733: }
1734: return $currentstring;
1735: }
1736:
1737: sub end_li {
1738: my ($target,$token) = @_;
1739: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1740: if ($target eq 'web' || $target eq 'webgrade') {
1741: $currentstring .= $token->[2];
1742: }
1743: return $currentstring;
1744: }
1745:
1746: #-- <u> tag (end tag required)
1747: sub start_u {
1748: my ($target,$token) = @_;
1749: my $currentstring = '';
1750: if ($target eq 'web' || $target eq 'webgrade') {
1751: $currentstring .= $token->[4];
1752: } elsif ($target eq 'tex') {
1753: &Apache::lonxml::startredirection();
1754: }
1755: return $currentstring;
1756: }
1757:
1758: sub end_u {
1759: my ($target,$token) = @_;
1760: my $currentstring = '';
1761: if ($target eq 'web' || $target eq 'webgrade') {
1762: $currentstring .= $token->[2];
1763: } elsif ($target eq 'tex') {
1764: $currentstring=&Apache::lonxml::endredirection();
1765: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1766: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1767: $currentstring=~s/(\S)\s*$/$1\}/;
1768: }
1769: return $currentstring;
1770: }
1771:
1772: #-- <ul> tag (end tag required)
1773: sub start_ul {
1774: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1775: my $currentstring = &end_p(); # Close off enclosing list.
1776: if ($target eq 'web' || $target eq 'webgrade') {
1777: $currentstring .= $token->[4];
1778: } elsif ($target eq 'tex') {
1779: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1780: $Apache::londefdef::list_index=0;
1781: if ($TeXtype eq 'disc') {
1782: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1783: '\renewcommand{\labelitemii}{$\bullet$}'.
1784: '\renewcommand{\labelitemiii}{$\bullet$}'.
1785: '\renewcommand{\labelitemiv}{$\bullet$}';
1786: } elsif ($TeXtype eq 'circle') {
1787: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1788: '\renewcommand{\labelitemii}{$\circ$}'.
1789: '\renewcommand{\labelitemiii}{$\circ$}'.
1790: '\renewcommand{\labelitemiv}{$\circ$}';
1791: } elsif ($TeXtype eq 'square') {
1792: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1793: '\renewcommand{\labelitemii}{$\diamond$}'.
1794: '\renewcommand{\labelitemiii}{$\diamond$}'.
1795: '\renewcommand{\labelitemiv}{$\diamond$}';
1796: }
1797: $currentstring .= '\strut \begin{itemize}';
1798: }
1799: return $currentstring;
1800: }
1801:
1802: sub end_ul {
1803: my ($target,$token) = @_;
1804: my $currentstring = '';
1805: if ($target eq 'web' || $target eq 'webgrade') {
1806: $currentstring = $token->[2];
1807: } elsif ($target eq 'tex') {
1808: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1809: '\renewcommand{\labelitemii}{$\bullet$}'.
1810: '\renewcommand{\labelitemiii}{$\bullet$}'.
1811: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1812: }
1813: return $currentstring;
1814: }
1815:
1816: #-- <menu> tag (end tag required)
1817: sub start_menu {
1818: my ($target,$token) = @_;
1819: my $currentstring = '';
1820: if ($target eq 'web' || $target eq 'webgrade') {
1821: $currentstring = $token->[4];
1822: } elsif ($target eq 'tex') {
1823: $currentstring = " \\begin{itemize} ";
1824: }
1825: return $currentstring;
1826: }
1827:
1828: sub end_menu {
1829: my ($target,$token) = @_;
1830: my $currentstring = '';
1831: if ($target eq 'web' || $target eq 'webgrade') {
1832: $currentstring = $token->[2];
1833: } elsif ($target eq 'tex') {
1834: $currentstring = " \\end{itemize}";
1835: }
1836: return $currentstring;
1837: }
1838:
1839: #-- <dir> tag (end tag required)
1840: sub start_dir {
1841: my ($target,$token) = @_;
1842: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1843: if ($target eq 'web' || $target eq 'webgrade') {
1844: $currentstring .= $token->[4];
1845: } elsif ($target eq 'tex') {
1846: $currentstring .= " \\begin{itemize} ";
1847: }
1848: return $currentstring;
1849: }
1850:
1851: sub end_dir {
1852: my ($target,$token) = @_;
1853: my $currentstring = '';
1854: if ($target eq 'web' || $target eq 'webgrade') {
1855: $currentstring = $token->[2];
1856: } elsif ($target eq 'tex') {
1857: $currentstring = " \\end{itemize}";
1858: }
1859: return $currentstring;
1860: }
1861:
1862: #-- <ol> tag (end tag required)
1863: sub start_ol {
1864: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1865: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1866: if ($target eq 'web' || $target eq 'webgrade') {
1867: $currentstring .= $token->[4];
1868: } elsif ($target eq 'tex') {
1869: $Apache::londefdef::list_index=0;
1870: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1871: if ($type eq '1') {
1872: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1873: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1874: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1875: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1876: } elsif ($type eq 'A') {
1877: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1878: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1879: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1880: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1881: } elsif ($type eq 'a') {
1882: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1883: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1884: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1885: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1886: } elsif ($type eq 'i') {
1887: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1888: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1889: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1890: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1891: } elsif ($type eq 'I') {
1892: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1893: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1894: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1895: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1896: }
1897: $currentstring .= '\strut \begin{enumerate}';
1898: }
1899: return $currentstring;
1900: }
1901:
1902: sub end_ol {
1903: my ($target,$token) = @_;
1904: my $currentstring = '';
1905: if ($target eq 'web' || $target eq 'webgrade') {
1906: $currentstring = $token->[2];
1907: } elsif ($target eq 'tex') {
1908: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1909: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1910: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1911: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1912: }
1913: return $currentstring;
1914: }
1915:
1916: #-- <dl> tag (end tag required)
1917: sub start_dl {
1918: my ($target,$token) = @_;
1919: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1920: if ($target eq 'web' || $target eq 'webgrade') {
1921: $currentstring .= $token->[4];
1922: } elsif ($target eq 'tex') {
1923: $currentstring .= '\begin{description}';
1924: $Apache::londefdef::DL++;
1925: push(@Apache::londefdef::description,[]);
1926: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1927: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1928: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1929: }
1930: return $currentstring;
1931: }
1932:
1933: sub end_dl {
1934: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1935: my $currentstring = '';
1936: if ($target eq 'web' || $target eq 'webgrade') {
1937: $currentstring = $token->[2];
1938: } elsif ($target eq 'tex') {
1939: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1940: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1941: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1942: $currentstring.=' '.$element.' ';
1943: }
1944: pop(@Apache::londefdef::description);
1945: $currentstring.='\end{description}';
1946: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1947: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1948: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1949: $Apache::londefdef::DL--;
1950: }
1951: return $currentstring;
1952: }
1953:
1954: #-- <dt> tag (end tag optional)
1955: sub start_dt {
1956: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1957: my $currentstring='';
1958: if ($target eq 'web' || $target eq 'webgrade') {
1959: $currentstring = $token->[4];
1960: } elsif ($target eq 'tex') {
1961: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1962: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1963: &Apache::lonxml::startredirection();
1964: $Apache::londefdef::DT[-1]++;
1965: $Apache::londefdef::seenDT[-1]=1;
1966: }
1967: return $currentstring;
1968: }
1969:
1970: sub end_dt {
1971: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1972: my $currentstring = '';
1973: if ($target eq 'web' || $target eq 'webgrade') {
1974: $currentstring = $token->[2];
1975: } elsif ($target eq 'tex') {
1976: if ($Apache::londefdef::DT[-1]) {
1977: my $data=&item_cleanup();
1978: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1979: $Apache::londefdef::DT[-1]--;
1980: }
1981: }
1982: return $currentstring;
1983: }
1984:
1985: sub item_cleanup {
1986: my $item=&Apache::lonxml::endredirection();
1987: $item=~s/\\begin{center}//g;
1988: $item=~s/\\end{center}//g;
1989: return $item;
1990: }
1991:
1992: #-- <dd> tag (end tag optional)
1993: sub start_dd {
1994: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1995: my $currentstring = '';
1996: if ($target eq 'web' || $target eq 'webgrade') {
1997: $currentstring = $token->[4];
1998: } elsif ($target eq 'tex') {
1999: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2000: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2001: if (!$Apache::londefdef::seenDT[-1]) {
2002: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2003: }
2004: push(@{$Apache::londefdef::description[-1]},'');
2005: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2006: $Apache::londefdef::DD[-1]++;
2007: &Apache::lonxml::startredirection();
2008: }
2009: return $currentstring;
2010: }
2011:
2012: sub end_dd {
2013: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2014: my $currentstring = '';
2015: if ($target eq 'web' || $target eq 'webgrade') {
2016: $currentstring = $token->[2];
2017: } elsif ($target eq 'tex') {
2018: $Apache::londefdef::description[-1]->[-1].=
2019: &Apache::lonxml::endredirection().' \vskip 0mm ';
2020: $Apache::londefdef::DD[-1]--;
2021: }
2022: return $currentstring;
2023: }
2024:
2025: #-- <table> tag (end tag required)
2026: # <table> also ends any prior <p> that is not closed.
2027: # but, unless I allow <p>'s to nest, that's the
2028: # only way I could think of to allow <p> in
2029: # <tr> <th> bodies
2030: #
2031: #list of supported attributes: border,width,TeXwidth,TeXtheme
2032: # align
2033: sub start_table {
2034: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2035: my $textwidth = '';
2036: my $currentstring = &end_p();
2037: if ($target eq 'web' || $target eq 'webgrade') {
2038: $currentstring .= $token->[4];
2039: } elsif ($target eq 'tex') {
2040: &disable_para(); # Can't have paras in a table.
2041:
2042:
2043: # New table code:
2044:
2045: # Get the parameters that we can do something about:
2046:
2047: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2048: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2049: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2050: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2051:
2052: # The only thing that needs any figuring out is the width.. and then only if it is
2053: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2054: #
2055:
2056: my $table = new Apache::lontable();
2057: if ($border ne '') {
2058: $table->table_border(1);
2059: $table->cell_border(1);
2060: }
2061: if ($theme ne '') {
2062: $table->theme($theme);
2063: }
2064: if ($align ne '') {
2065: $table->alignment($align);
2066: }
2067:
2068: # Missing width is most of page width
2069:
2070: if ($width eq "") {
2071: $width = '70%';
2072: }
2073:
2074: # If a percentage, need to calculate what this means in terms of
2075: # page width:
2076:
2077: if ($width =~ /%$/) {
2078: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2079: $width =~ s/%//;
2080: $width = $width * $textwidth / 100.0;
2081: $width .= " mm";
2082: $table->width($width);
2083: }
2084:
2085: push(@Apache::londefdef::table, $table);
2086: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2087:
2088: #--------------------------------------------------------
2089: # Old table code here.
2090: #--------------------------------------------------------
2091:
2092:
2093: if (0) {
2094: push(@Apache::londefdef::table, {});
2095: $Apache::londefdef::table[-1]{'row_number'} = -1;
2096: #maximum table's width (default coincides with text line length)
2097: if ($#Apache::londefdef::table==0) {
2098: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
2099: $textwidth=~/(\d+\.?\d*)/;
2100: $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
2101: } else {
2102: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
2103: #the maximum width of nested table is determined by LATeX width of parent cell
2104: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
2105: } else {
2106: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
2107: $textwidth=$Apache::londefdef::table[-2]{'width'};
2108: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
2109: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
2110: }
2111: }
2112: }
2113:
2114: # width either comes forced from the TeXwidth or the width parameters.
2115: # in either case it can be a percentage or absolute width.
2116: # in the width case we ignore absolute width
2117: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2118: if (!defined($TeXwidth)) {
2119: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
2120: $safeeval,undef,1);
2121: if ($htmlwidth =~ /%/) {
2122: $TeXwidth = $htmlwidth;
2123: } else {
2124: $TeXwidth = $textwidth;
2125: }
2126: }
2127: # if the width is specified as a % it is converted to an absolute width.
2128: # otherwise.. just plugged right in the hash
2129:
2130: if ($TeXwidth=~/%/) {
2131: $TeXwidth=~/(\d+)/;
2132: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
2133: } else {
2134: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
2135: }
2136: # In the end, however the table width cannot be wider than $textwidth...
2137:
2138: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
2139: $Apache::londefdef::table[-1]{'width'} = $textwidth;
2140: }
2141: #table's border
2142: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2143: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2144: unless (defined $border) { $border = 0; }
2145: if ($border) {
2146: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
2147: $Apache::londefdef::table[-1]{'vinc'} = '&';
2148: $Apache::londefdef::table[-1]{'vvinc'} = '|';
2149: } else {
2150: $Apache::londefdef::table[-1]{'hinc'} = '';
2151: $Apache::londefdef::table[-1]{'vinc'} = '&';
2152: $Apache::londefdef::table[-1]{'vvinc'} = '';
2153: }
2154: if ($#Apache::londefdef::table==0) {
2155: # Note that \newline seems to destroy the alignment envs.
2156: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2157: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2158: }
2159: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2160: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2161: $Apache::londefdef::table[-1]{'objectlen'}=[];
2162: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2163: $Apache::londefdef::table[-1]{'maxlen'}=[];
2164: $Apache::londefdef::table[-1]{'minlen'}=[];
2165: $Apache::londefdef::table[-1]{'content'}=[];
2166: $Apache::londefdef::table[-1]{'align'}=[];
2167: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2168: }
2169:
2170: }
2171: return $currentstring;
2172: }
2173:
2174: sub end_table {
2175: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2176: my $currentstring = '';
2177: if ($target eq 'web' || $target eq 'webgrade') {
2178: $currentstring = $token->[2];
2179: } elsif ($target eq 'tex') {
2180:
2181:
2182: # New table code:
2183:
2184: my $table = pop(@Apache::londefdef::table);
2185: my $t = $table->generate();
2186: $currentstring = $t->generate_string();
2187: &enable_para();
2188: #--------------------------------------------------------------
2189: # Old table code:
2190: #--------------------------------------------------------------
2191:
2192: if (0) {
2193:
2194: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
2195: my $inmemory = '';
2196: my $output = '';
2197: my $WARNING='';
2198: #width of columns from TeXwidth attributes
2199:
2200: # Protect against unbalanced </table> tag.
2201:
2202: if (scalar(@Apache::londefdef::table) > 0) {
2203:
2204: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2205: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2206: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2207: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2208: }
2209: }
2210: }
2211: #free space and number of empty columns
2212: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2213: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2214: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2215: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2216: $empty_columns++;
2217: } else {
2218: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2219: }
2220: }
2221:
2222: #boundaries for contents columns
2223: my @min_len=();#columns can not be narrower
2224: my @max_len=();#maximum length of column
2225: my $avg_max;
2226: my $avg_min;
2227: my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
2228: for (my $jn=0;$jn<=$counter_cols; $jn++) {
2229: my ($localmin,$localmax)=(0,0);
2230: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2231: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2232: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2233: }
2234: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2235: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2236: }
2237: }
2238: push @min_len, $localmin;
2239: push @max_len, $localmax;
2240: $avg_max = $localmax + $avg_max;
2241: $avg_min = $localmin + $avg_min;
2242: }
2243: # Does not really matter what the average max/min are if there are no cols.
2244: # and this prevents div 0 in that case.
2245:
2246: if ($counter_cols != 0) {
2247: $avg_max = $avg_max/$counter_cols;
2248: $avg_min = $avg_min/$counter_cols;
2249: }
2250:
2251:
2252: # I don't think the below is needed.. but just in case:
2253:
2254: if ($avg_min > $avg_max) {
2255: my $temp = $avg_min;
2256: $avg_min = $avg_max;
2257: $avg_max = $temp;
2258: }
2259:
2260:
2261: for (my $jn=0;$jn<=$counter_cols;$jn++) {
2262: my $localmin=0,;
2263: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2264: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2265: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2266: }
2267: }
2268: if ($max_len[$jn]<$localmin) {
2269: $max_len[$jn]=$localmin;
2270: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2271: }#object size is bigger
2272: if ($min_len[$jn]<$localmin) {
2273: $min_len[$jn]=$localmin;
2274: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2275: }#object size is bigger
2276: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2277: $min_len[$jn]=0;
2278: $max_len[$jn]=0;
2279: }
2280: # Spans seem to be really bothered by max/min = 0. So if we have one
2281: # make it an average joe max/min.
2282:
2283: if ($max_len[$jn] == 0) {
2284: $max_len[$jn] = $avg_max;
2285: }
2286: if ($min_len[$jn] == 0) {
2287: $min_len[$jn] = $avg_min;
2288: }
2289:
2290: }
2291: #final adjustment of column width
2292: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2293: my @adjust=();
2294: #step 1. adjustment by maximum value
2295: my $space_needed=0;
2296: for (my $jn=0;$jn<=$#max_len;$jn++) {
2297: $space_needed=$space_needed+$max_len[$jn];
2298: }
2299: if ($space_needed<=$available_space) {
2300:
2301: for (my $jn=0;$jn<=$#max_len;$jn++) {
2302: if ($fwidth[$jn]==0) {
2303: $fwidth[$jn]=$max_len[$jn];
2304: }
2305: }
2306: } else {
2307: #step 2. adjustment by minimum value (estimation)
2308: $space_needed=0;
2309: for (my $jn=0;$jn<=$#min_len;$jn++) {
2310: $space_needed+=$min_len[$jn];
2311: }
2312: if ($space_needed>$available_space) {
2313: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2314: for (my $jn=0;$jn<=$#max_len;$jn++) {
2315: if ($fwidth[$jn]==0) {
2316: $fwidth[$jn]=$min_len[$jn];
2317: }
2318: }
2319: #check if we have objects which can be scaled
2320: my $how_many_to_scale=0;
2321: my @to_scale=();
2322: for (my $jn=0;$jn<=$#max_len;$jn++) {
2323: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2324: $how_many_to_scale++;
2325: push @to_scale, $jn;
2326: }
2327: }
2328: if ($how_many_to_scale>0) {
2329: my $space_to_adjust=($space_needed-$available_space)/$how_many_to_scale;
2330: foreach my $jn (@to_scale) {
2331: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2332: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2333: if ($1 ne '') {
2334: my $current_length=&recalc($1);
2335: $current_length=~/(\d+\.?\d*)/;
2336: $current_length=$current_length-$space_to_adjust;
2337: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2338: }
2339: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2340: if ($1 ne '') {
2341: my $current_length=$1;
2342: $current_length=$current_length-$space_to_adjust;
2343: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2344: }
2345: }
2346: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2347: }
2348: }
2349: } else {
2350: #step 3. adjustment over minimal + corrections
2351: my $enlarge_coef=$available_space/$space_needed;
2352: my $acsessive=0;
2353: for (my $jn=0;$jn<=$#min_len;$jn++) {
2354: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2355: if ($adjust[$jn]>$max_len[$jn]) {
2356: $fwidth[$jn]=$max_len[$jn];
2357: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2358: $adjust[$jn]=0;
2359:
2360: }
2361: }
2362: if ($acsessive>0) {
2363: #we have an excess of space and can redistribute it
2364: my $notempty_columns=0;
2365: for (my $jn=0;$jn<=$#min_len;$jn++) {
2366: if ($adjust[$jn]!=0) {
2367: $notempty_columns++;
2368: }
2369: }
2370: my $per_column=$acsessive/$notempty_columns;
2371: for (my $jn=0;$jn<=$#min_len;$jn++) {
2372: if ($adjust[$jn]!=0) {
2373: $adjust[$jn]+=$per_column;
2374: $fwidth[$jn]=$adjust[$jn];
2375: }
2376: }
2377: } else {
2378: for (my $jn=0;$jn<=$#min_len;$jn++) {
2379: $fwidth[$jn]=$adjust[$jn];
2380: }
2381: }
2382: }
2383: }
2384: # use all available width or specified width as if not specified,
2385: # the specified width gets defaulted to the available width.
2386:
2387: my $current=0;
2388: for (my $i=0;$i<=$#fwidth;$i++) {
2389: $current+=$fwidth[$i];
2390: }
2391: if ($current == 0) {
2392: $current = $Apache::londefdef::table[-1]{'width'};
2393: }
2394: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2395: for (my $i=0;$i<=$#fwidth;$i++) {
2396: $fwidth[$i]*=$coef;
2397: }
2398: #removing of empty columns if allowed
2399: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2400: if ($permission eq 'yes') {
2401: my @cleaned_table=();
2402: my @cleaned_header=();
2403: my $colind=0;
2404: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2405: if ($fwidth[$jn]!=0) {
2406: #we need to copy column
2407: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2408: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2409: $cleaned_header[$colind]=$fwidth[$jn];
2410: }
2411: $colind++;
2412: }
2413: }
2414: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2415: @fwidth=@cleaned_header;
2416: }
2417:
2418:
2419: #construct header of the table
2420: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2421: for (my $in=0;$in<=$#fwidth;$in++) {
2422: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2423: }
2424: $header_of_table .= '}';
2425:
2426: #fill the table
2427: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2428: my $have_rowspan = 0;
2429: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2430:
2431: #-----------------------------------------------------------
2432: # I think this order of doing things will ensure that
2433: # single rowspan, columspan and combined row/colspans will
2434: # work correctly. LaTeX is delicate here.
2435: # RF.
2436:
2437: # Start a rowspan if necessary:
2438:
2439: my $primary_col_width = $fwidth[$jn]; # Width of primary column.
2440: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2441: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2442: #
2443: # Do the appropriate magic if this has a colspan
2444: #
2445:
2446: my $border_char = "";
2447: if ($border) {
2448: $border_char = "|";
2449: }
2450: my $spanwidth = 0;
2451: if ($colspan > 1) {
2452: for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
2453: $spanwidth += $fwidth[$spancol];
2454: }
2455: $output .= '\multicolumn{'.
2456: $colspan
2457: ."}";
2458: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2459: $output .= '{'.$border_char.'c'.$border_char.'}{';
2460: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2461: $output .= '{'.$border_char.'r'.$border_char.'}{';
2462: }
2463: else {
2464: $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
2465: }
2466:
2467: } else {
2468: $spanwidth = $primary_col_width; # If no span width will be just colwidth
2469: }
2470:
2471: # Rowspan... if colspan is 1, and there's an alignment we'll need
2472: # to kick in a multicolumn in order to get the alignment spec.
2473: # this must precede the multirow or LaTex gets quite upset.
2474: # Naturally if colspan > 1 we've already done that above ^
2475: #
2476: my $multirow_aligned = 0;
2477: if ($rowspan > 1) {
2478: if ($colspan == 1) {
2479: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2480: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2481: $multirow_aligned = 1;
2482: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2483: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2484: $multirow_aligned = 1;
2485: }
2486: }
2487: $have_rowspan++;
2488: if ($multirow_aligned) {
2489: $output .= '\multirow{'.$rowspan.'}[0]{*}{';
2490: } else {
2491: $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
2492: }
2493:
2494: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2495: s{^\s*\\par\s*}{};
2496: $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
2497: s{\s*\\vskip\s*0pt\s*$}{};
2498:
2499: #
2500: # If we did not throw in a multicolumn to align, then add
2501: # an extra {
2502: # so we close correctly without having to keep additional state
2503: # around
2504: #
2505: if (!$multirow_aligned) {
2506: $output .= '{';
2507: }
2508: }
2509: if (($rowspan eq '^') || ($rowspan eq '_')) {
2510: $have_rowspan++;
2511: }
2512: #--------------------------------------------------------------
2513:
2514:
2515: # For right and center alignment of single cells.
2516: # we are going to use a multicolumn with a span of 1 to specify alignment.
2517: #
2518: if ($colspan == 1 && $rowspan == 1) {
2519: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2520: $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
2521: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2522: $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
2523: }
2524: }
2525:
2526: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2527:
2528: if (($colspan == 1 && $rowspan == 1) &&
2529: (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
2530: ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
2531: $output .= '}';
2532: }
2533:
2534: # Close off any open multirow:
2535:
2536: if ($rowspan > 1) {
2537: $output .= '}}';
2538: }
2539: # Close off the colspan...
2540: #
2541: if ($colspan > 1) {
2542: $output .= '}';
2543: $jn += $colspan-1; # Adjust for number of rows really left.
2544: }
2545: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2546: }
2547: # If have_rowspan > 0, and borders are on, then
2548: # we need to do more than put an \hline at the bottom of row.
2549: # we need to do the appropriate \cline to ensure that
2550: # the spanned rows don't have \hlines through them.
2551:
2552: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2553: $output .= ' \\\\ ';
2554: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2555: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2556: if ($rowspan ne "^") {
2557: if (($rowspan <= 1) || ($rowspan eq '_')) {
2558: my $column = $jn+1;
2559: $output .= '\cline{'.$column.'-'.$column.'} ';
2560: }
2561: }
2562: }
2563:
2564: } else {
2565: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2566: }
2567: }
2568: # Note that \newline destroys alignment env's produced by e.g. <div>
2569: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2570: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2571: if ($#Apache::londefdef::table > 0) {
2572: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2573: # Figure out max/and min width by summing us and then
2574: # apply that to the current column of the table we nest in
2575: # if it's larger than the current width or the current width
2576: # is undefined.
2577: #
2578: my $min_nested_width = 0;
2579: my $max_nested_width = 0;
2580: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2581: $min_nested_width += $min_len[$col];
2582: $max_nested_width += $max_len[$col];
2583:
2584: }
2585: # Fudge in an extra 5 mm for borders etc:
2586:
2587: $min_nested_width += 5;
2588: $max_nested_width += 5;
2589:
2590: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2591: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2592: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2593: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2594: }
2595: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2596: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2597: }
2598:
2599: pop @Apache::londefdef::table;
2600: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2601: } else {
2602: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2603: pop @Apache::londefdef::table;
2604: undef @Apache::londefdef::table;
2605: }
2606: }
2607: &enable_para();
2608: }
2609: }
2610: return $currentstring;
2611: }
2612:
2613: #-- <tr> tag (end tag optional)
2614: sub start_tr {
2615: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2616: my $currentstring = '';
2617: if ($target eq 'web' || $target eq 'webgrade') {
2618: $currentstring = $token->[4];
2619: } elsif ($target eq 'tex') {
2620:
2621: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2622: $Apache::londefdef::table[-1]->start_row();
2623:
2624: if ($align ne '') {
2625: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2626: }
2627:
2628: #---------------------------------------------------------------
2629: # Old table code.
2630: #---------------------------------------------------------------
2631:
2632: if (0) {
2633: $Apache::londefdef::table[-1]{'row_number'}++;
2634: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2635: if ($alignchar ne '') {
2636: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2637: } else {
2638: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2639: }
2640: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2641: #
2642: # Need to save the number of table columns to preserve the max # columns.
2643: #
2644: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2645: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2646: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2647: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2648: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2649: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2650: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2651: }
2652: }
2653: return $currentstring;
2654: }
2655:
2656: sub end_tr {
2657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2658: my $currentstring = &end_p(); # Close any pending <p> in the row.
2659: if ($target eq 'web' || $target eq 'webgrade') {
2660: $currentstring .= $token->[2];
2661: } elsif ($target eq 'tex') {
2662:
2663: # In case the user is missing a </td> or </th> tag:
2664:
2665: if ($Apache::londefdef::TD_redirection) {
2666: &end_td_tex($parstack,$parser,$safeeval);
2667: }
2668: $Apache::londefdef::table[-1]->end_row();
2669:
2670: #-----------------------------------------------
2671: # Old table code
2672: #-----------------------------------------------
2673:
2674: if (0) {
2675: if ($Apache::londefdef::TD_redirection) {
2676: &end_td_tex($parstack,$parser,$safeeval);
2677: }
2678: # Counter columns must be the maximum number of columns seen
2679: # in the table so far so:
2680: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2681: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2682: }
2683: }
2684:
2685:
2686: }
2687: return $currentstring;
2688: }
2689:
2690: #-- <td> tag (end tag optional)
2691: sub start_td {
2692: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2693: my $currentstring = '';
2694: if ($target eq 'web' || $target eq 'webgrade') {
2695: $currentstring = $token->[4];
2696: } elsif ($target eq 'tex') {
2697: $Apache::londefdef::TD_redirection = 1;
2698: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2699: }
2700: return $currentstring;
2701: }
2702:
2703: sub tag_check {
2704: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2705: my @ar=@$parstack;
2706: for (my $i=$#ar-1;$i>=0;$i--) {
2707: if (lc($$tagstack[$i]) eq $good_tag) {
2708: &start_td_tex($parstack,$parser,$safeeval);
2709: last;
2710: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2711: splice @ar, $i+1;
2712: &end_td_tex(\@ar,$parser,$safeeval);
2713: &start_td_tex($parstack,$parser,$safeeval);
2714: last;
2715: }
2716: }
2717: return '';
2718: }
2719:
2720: #
2721: # Factor out cell configuration hash generation:
2722: #
2723:
2724: sub cell_config_hash {
2725: my ($align, $rowspan, $colspan) = @_;
2726: my %config;
2727: if ($align ne '') {
2728: $config{'halign'} = $align;
2729: }
2730: if ($colspan ne "") {
2731: $config{'colspan'} = $colspan;
2732: }
2733: if ($rowspan ne '') {
2734: $config{'rowspan'} = $rowspan;
2735: }
2736: return \%config;
2737: }
2738:
2739: sub start_td_tex {
2740: my ($parstack,$parser,$safeeval) = @_;
2741:
2742: # At this stage, an empty cell is created with the
2743: # appropriate rowspan/colspan and alignment
2744: # attributes, but empty of text. end_td_tex will
2745: # fetch the contents from the recursive parse and
2746: # fill the cell with them:
2747: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2748: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2749: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2750:
2751: my $config = &cell_config_hash($align, $rowspan, $colspan);
2752:
2753: my $table = $Apache::londefdef::table[-1];
2754: $table->add_cell('', $config);
2755:
2756:
2757: #------------------------------------------------
2758: # Old table code.
2759: #------------------------------------------------
2760:
2761: if (0) {
2762:
2763: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2764: if ($alignchar eq '') {
2765: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2766: }
2767: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2768: $Apache::londefdef::table[-1]{'counter_columns'}++;
2769: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2770: if (defined $TeXwidth) {
2771: my $current_length=&recalc($TeXwidth);
2772: $current_length=~/(\d+\.?\d*)/;
2773: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2774: }
2775: }
2776: &Apache::lonxml::startredirection();
2777: return '';
2778: }
2779:
2780: sub end_td_tex {
2781:
2782: my $text = &Apache::lonxml::endredirection();
2783: my $table = $Apache::londefdef::table[-1];
2784: $table->append_cell_text($text);
2785:
2786: #-------------------------------------------------
2787: # Old table code
2788: #-------------------------------------------------
2789:
2790: if (0) {
2791: my ($parstack,$parser,$safeeval) = @_;
2792: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2793: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2794: my $data = &Apache::lonxml::endredirection();
2795:
2796: # The rowspan array of the table indicates which cells are part of a span.
2797: # n indicates the start of a span set of n rows.
2798: # ^ indicates a cell that continues a span set.
2799: # _ indicates the cell is at the bottom of a span set.
2800: # If this and subsequent cells are part of a rowspan, we must
2801: # push along the row until we find one that is not.
2802:
2803: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2804: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2805: # Part of a span.
2806: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2807: $current_column++;
2808: }
2809: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2810:
2811:
2812: # Get the column and row spans.
2813: # Colspan can be done via \multicolumn if I can figure out the data structs.
2814:
2815: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2816: if (!$colspan) {
2817: $colspan = 1;
2818: }
2819:
2820: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2821: if (!$rowspan) {
2822: $rowspan = 1;
2823: }
2824:
2825:
2826:
2827: for (my $c = 0; $c < $colspan; $c++) {
2828: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2829: for (my $i = 1; $i < $rowspan; $i++) {
2830: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2831: if ($i == ($rowspan-1)) {
2832: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2833: }
2834: }
2835: }
2836:
2837: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2838: if (defined $TeXwidth) {
2839: for (my $c = 0; $c < $colspan; $c++) {
2840: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2841: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2842: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2843: }
2844: } else {
2845: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2846: my $garbage_data=$data;
2847: my $fwidth=0;
2848: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2849: my $current_length=&recalc($1);
2850: $current_length=~/(\d+\.?\d*)/;
2851: if ($fwidth<$1) {$fwidth=$1;}
2852: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2853: }
2854: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2855: my $current_length=$1;
2856: if ($fwidth<$current_length) {$fwidth=$current_length;}
2857: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2858: }
2859: for (my $c = 0; $c < $colspan; $c++) {
2860: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2861: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2862: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2863: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2864: }
2865: } 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)*/) {
2866: my $garbage_data=$data;
2867: my $fwidth=0;
2868: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2869: my $current_length=&recalc($1);
2870: $current_length=~/(\d+\.?\d*)/;
2871: if ($fwidth<$1) {$fwidth=$1;}
2872: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2873: }
2874: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2875: my $current_length=&recalc($1);
2876: $current_length=~/(\d+\.?\d*)/;
2877: if ($fwidth<$1) {$fwidth=$1;}
2878: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2879: }
2880: for (my $c = 0; $c < $colspan; $c++) {
2881: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2882: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2883: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2884: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2885: }
2886: $data=~s/\\\\\s*$//;
2887: } else {
2888: $data=~s/^\s+(\S.*)/$1/;
2889: $data=~s/(.*\S)\s+$/$1/;
2890: $data=~s/(\s)+/$1/;
2891: my ($current_length,$min_length)=(0,0);
2892: if ($data=~/\\vskip/) {
2893: my $newdata=$data;
2894: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2895: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2896: foreach my $elementdata (@newdata) {
2897: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2898: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2899: my @words=split(/ /,$elementdata);
2900: foreach my $word (@words) {
2901: my $lengthword=2.5*&LATEX_length($word);
2902: if ($min_length<$lengthword) {$min_length=$lengthword;}
2903: }
2904: }
2905: } else {
2906: $current_length=2.5*&LATEX_length($data);
2907: my @words=split(/ /,$data);
2908: foreach my $word (@words) {
2909: my $lengthword=2*&LATEX_length($word);
2910: if ($min_length<$lengthword) {$min_length=$lengthword;}
2911: }
2912: }
2913: for (my $c = 0; $c < $colspan; $c++) {
2914: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2915: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2916: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2917: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2918: }
2919: }
2920: }
2921: # Substitute all of the tables nested in this cell in their appropriate places.
2922:
2923:
2924: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2925: for (my $in=0; $in<=$nested_count; $in++) {
2926: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2927: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2928: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2929: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2930:
2931: }
2932: # Should be be killing off the 'include' elements as they're used up?
2933:
2934: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2935:
2936:
2937:
2938:
2939: # the colspan array will indicate how many columns will be spanned by this
2940: # cell..this requires that counter_columns also be adjusted accordingly
2941: # so that the next bunch of text goes in the right cell. Note that since
2942: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2943: #
2944:
2945: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2946: for (my $i = 0; $i < ($colspan -1); $i++) {
2947: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2948: }
2949: for (my $r = 0; $r < $rowspan; $r++) {
2950: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2951: # Put empty text in spanned cols.
2952:
2953: }
2954:
2955: }
2956:
2957: return '';
2958: }
2959:
2960: sub end_td {
2961: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2962: my $currentstring = '';
2963: if ($target eq 'web' || $target eq 'webgrade') {
2964: $currentstring = $token->[2];
2965: } elsif ($target eq 'tex') {
2966: $Apache::londefdef::TD_redirection =0;
2967: &end_td_tex($parstack,$parser,$safeeval);
2968: }
2969: return $currentstring;
2970: }
2971:
2972: #-- <th> tag (end tag optional)
2973: sub start_th {
2974: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2975: my $currentstring = '';
2976: if ($target eq 'web' || $target eq 'webgrade') {
2977: $currentstring = $token->[4];
2978: } elsif ($target eq 'tex') {
2979: $Apache::londefdef::TD_redirection = 1;
2980: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2981: }
2982: return $currentstring;
2983: }
2984:
2985: sub tagg_check {
2986: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2987: my @ar=@$parstack;
2988: for (my $i=$#ar-1;$i>=0;$i--) {
2989: if (lc($$tagstack[$i]) eq $good_tag) {
2990: &start_th_tex($parstack,$parser,$safeeval);
2991: last;
2992: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2993: splice @ar, $i+1;
2994: &end_th_tex(\@ar,$parser,$safeeval);
2995: &start_th_tex($parstack,$parser,$safeeval);
2996: last;
2997: }
2998: }
2999: return '';
3000: }
3001:
3002: sub start_th_tex {
3003: my ($parstack,$parser,$safeeval) = @_;
3004:
3005: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
3006: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
3007: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
3008:
3009: my $config = cell_config_hash($alignment, $rowspan, $colspan);
3010: my $table = $Apache::londefdef::table[-1];
3011: $table->add_cell('\textbf{', $config);
3012:
3013: #-------------------------------------------------------------------------------------
3014: #
3015: # Old table code.
3016: #
3017: #--------------------------------------------------------------------------------------
3018:
3019: if (0) {
3020:
3021:
3022: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
3023: if ($alignchar eq '') {
3024: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
3025: }
3026: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
3027: $Apache::londefdef::table[-1]{'counter_columns'}++;
3028: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3029: if (defined $TeXwidth) {
3030: my $current_length=&recalc($TeXwidth);
3031: $current_length=~/(\d+\.?\d*)/;
3032: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
3033: }
3034: }
3035:
3036: # Accept xml until the </th> tag.
3037:
3038: &Apache::lonxml::startredirection();
3039: return '';
3040: }
3041:
3042: sub end_th_tex {
3043: my ($parstack,$parser,$safeeval) = @_;
3044:
3045: my $table = $Apache::londefdef::table[-1];
3046: my $text = &Apache::lonxml::endredirection();
3047: $table->append_cell_text($text.'}');
3048:
3049: #-----------------------------------------------------------------------------
3050: # Old table code:
3051: #-----------------------------------------------------------------------------
3052:
3053: if (0) {
3054: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
3055: my $data=&Apache::lonxml::endredirection();
3056: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
3057: if (defined $TeXwidth) {
3058: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3059: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3060: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3061: } else {
3062: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
3063: my $garbage_data=$data;
3064: my $fwidth=0;
3065: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
3066: my $current_length=&recalc($1);
3067: $current_length=~/(\d+\.?\d*)/;
3068: if ($fwidth<$1) {$fwidth=$1;}
3069: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
3070: }
3071: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
3072: my $current_length=$1;
3073: if ($fwidth<$current_length) {$fwidth=$current_length;}
3074: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
3075: }
3076: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3077: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
3078: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3079: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3080: } else {
3081: $data=~s/^\s+(\S.*)/$1/;
3082: $data=~s/(.*\S)\s+$/$1/;
3083: $data=~s/(\s)+/$1/;
3084: my ($current_length,$min_length)=(0,0);
3085: if ($data=~/\\vskip/) {
3086: my $newdata=$data;
3087: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
3088: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
3089: foreach my $elementdata (@newdata) {
3090: my $lengthnewdata=2.5*&LATEX_length($elementdata);
3091: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
3092: my @words=split(/ /,$elementdata);
3093: foreach my $word (@words) {
3094: my $lengthword=2.5*&LATEX_length($word);
3095: if ($min_length<$lengthword) {$min_length=$lengthword;}
3096: }
3097: }
3098: } else {
3099: $current_length=2.5*&LATEX_length($data);
3100: my @words=split(/ /,$data);
3101: foreach my $word (@words) {
3102: my $lengthword=2*&LATEX_length($word);
3103: if ($min_length<$lengthword) {$min_length=$lengthword;}
3104: }
3105: }
3106: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3107: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
3108: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
3109: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
3110: }
3111: }
3112: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
3113: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
3114: }
3115: #make data bold
3116: $data='\textbf{'.$data.'}';
3117: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
3118: }
3119: return'';
3120: }
3121:
3122: sub end_th {
3123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3124: my $currentstring = &end_p(); # Close any open <p> in the row.
3125: if ($target eq 'web' || $target eq 'webgrade') {
3126: $currentstring .= $token->[2];
3127: } elsif ($target eq 'tex') {
3128: $Apache::londefdef::TD_redirection =0;
3129: &end_th_tex($parstack,$parser,$safeeval);
3130: }
3131: return $currentstring;
3132: }
3133:
3134: #-- <img> tag (end tag forbidden)
3135: #
3136: # Render the <IMG> tag.
3137: # <IMG> has the following attributes (in addition to the
3138: # standard HTML ones:
3139: # TeXwrap - Governs how the tex target will try to wrap text around
3140: # horizontally aligned images.
3141: # TeXwidth - The width of the image when rendered for print (mm).
3142: # TeXheight - The height of the image when rendered for print (mm)
3143: # (Note there seems to also be support for this as a % of page size)
3144: #
3145: sub start_img {
3146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
3147: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
3148: undef,1);
3149: if (! $src &&
3150: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
3151: ) {
3152: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
3153: return '';
3154: }
3155: &Apache::lonxml::extlink($src);
3156: my $currentstring = '';
3157: my $scaling = .3;
3158:
3159: # Render unto browsers that which are the browser's...
3160:
3161: if ($target eq 'web' || $target eq 'webgrade') {
3162: my $enc = ('yes' eq
3163: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
3164: $safeeval)));
3165: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
3166: $enc);
3167:
3168: # and render unto TeX that which is LaTeX
3169: } elsif ($target eq 'tex') {
3170: #
3171: # The alignment will require some superstructure to be put around
3172: # the \includegraphics stuff. At present we can only partially
3173: # simulate the alignments offered by html.
3174: #
3175: #
3176: my $align = lc(&Apache::lonxml::get_param('align',
3177: $parstack,
3178: $safeeval,
3179: undef,1));
3180: if(!$align) {
3181: $align = "bottom"; # This is html's default so it's ours too.
3182: }
3183: #
3184: &Apache::lonxml::debug("Alignemnt = $align");
3185: # LaTeX's image/text wrapping is really bad since it wants to
3186: # make figures float.
3187: # The user has the optional parameter (applicable only to l/r
3188: # alignment to use the picins/parpic directive to get wrapped text
3189: # this is also imperfect.. that's why we give them a choice...
3190: # so they can't yell at us for our choice.
3191: #
3192: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
3193: $parstack,
3194: $safeeval,
3195: undef,0);
3196: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
3197: if(!$latex_rendering) {
3198: $latex_rendering = "texwrap";
3199: }
3200: # using texwrap inside a table does not work. So, if after all of this,
3201: # texwrap is on, we turn it off if we detect we're in a table:
3202: #
3203: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
3204: $latex_rendering = 'parpic';
3205: }
3206:
3207: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
3208:
3209: #if original bmp/gif/jpg/png file exist do following:
3210: my $origsrc=$src;
3211: my ($path,$file) = &get_eps_image($src);
3212: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
3213: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3214: &Apache::lonxml::debug("path = $path file = $file src = $src");
3215: if (-e $src) {
3216: &Apache::lonxml::debug("$src exists");
3217: my ($height_param,$width_param)=
3218: &image_size($origsrc,0.3,$parstack,$safeeval);
3219: my $size;
3220: if ($width_param) { $size.='width='.$width_param.' mm,'; }
3221: if ($height_param) { $size.='height='.$height_param.' mm]'; }
3222: # Default size if not able to extract that (e.g. eps image).
3223:
3224: # &Apache::lonnet::logthis("Size = $size");
3225:
3226: $size='['.$size;
3227: $size=~s/,$/]/;
3228: $currentstring .= '\graphicspath{{'.$path.'}}'
3229: .'\includegraphics'.$size.'{'.$file.'} ';
3230: my $closure;
3231: ($currentstring, $closure) = &align_latex_image($align,
3232: $latex_rendering,
3233: $currentstring,
3234: $width_param,
3235: $height_param);
3236: $currentstring .= $closure;
3237:
3238: } else {
3239: &Apache::lonxml::debug("$src does not exist");
3240: #original image file doesn't exist so check the alt attribute
3241: my $alt =
3242: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
3243: unless ($alt) {
3244: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3245: }
3246:
3247: if ($alt) { $currentstring .= ' '.$alt.' '; }
3248: }
3249:
3250: # And here's where the semi-quote breaks down: allow the user
3251: # to edit the beast as well by rendering the problem for edit:
3252: } elsif ($target eq 'edit') {
3253: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
3254: $currentstring .=&Apache::edit::tag_start($target,$token);
3255: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
3256: &Apache::edit::browse('src',undef,'alt',$only).' '.
3257: &Apache::edit::search('src',undef,'alt').'<br />';
3258: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
3259: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
3260: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
3261: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
3262: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
3263: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
3264: ['','bottom','middle','top','left','right'],$token,5);
3265: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
3266: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
3267: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
3268: ['no','yes'], $token, 2);
3269: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
3270: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
3271: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
3272: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
3273: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
3274:
3275: if ($token->[2]{'src'}=~/\$/) {
3276: $currentstring.='Variable image source';
3277: } else {
3278: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
3279: if ($width) { $currentstring.=' width="'.$width.'" '; }
3280: if ($height) { $currentstring.=' height="'.$height.'" '; }
3281: $currentstring .= ' />';
3282: }
3283: } elsif ($target eq 'modified') {
3284: my ($osrc,$owidth,$oheight)=
3285: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3286: my $ctag=&Apache::edit::get_new_args($token,$parstack,
3287: $safeeval,'src','alt','align',
3288: 'TeXwidth','TeXheight', 'TeXwrap',
3289: 'width','height','encrypturl');
3290: my ($nsrc,$nwidth,$nheight)=
3291: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
3292: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
3293: &image_replication($loc);
3294: my ($iwidth,$iheight);
3295: if (-e $loc) {
3296: my $image = Image::Magick->new;
3297: $image->Read($loc);
3298: ($iwidth, $iheight) = ($image->Get('width'),
3299: $image->Get('height'));
3300: }
3301: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
3302: # changed image or no size specified,
3303: # if they didn't explicitly change the
3304: # width or height use the ones from the image
3305: if ($iwidth && $iheight) {
3306: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
3307: $token->[2]{'width'} = $iwidth;$ctag=1;
3308: }
3309: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
3310: $token->[2]{'height'}=$iheight;$ctag=1;
3311: }
3312: }
3313: }
3314: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
3315: # if we don't have a width or height
3316: if ($iwidth && $cwidth && !$cheight) {
3317: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
3318: }
3319: if ($iheight && $cheight && !$cwidth) {
3320: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
3321: }
3322: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
3323: }
3324:
3325: return $currentstring;
3326: }
3327:
3328: sub end_img {
3329: my ($target,$token) = @_;
3330: my $currentstring = '';
3331: if ($target eq 'web' || $target eq 'webgrade') {
3332: $currentstring = $token->[2];
3333: } elsif ($target eq 'tex') {
3334: $currentstring = '';
3335: }
3336: return $currentstring;
3337: }
3338:
3339: #-- <applet> tag (end tag required)
3340: sub start_applet {
3341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3342:
3343: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
3344: &Apache::lonxml::extlink($code);
3345: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
3346: undef,1);
3347: &Apache::lonxml::extlink($archive);
3348: my $currentstring = '';
3349: if ($target eq 'web' || $target eq 'webgrade') {
3350: $currentstring = &Apache::lonenc::encrypt_ref($token,
3351: {'code'=>$code,
3352: 'archive'=>$archive}
3353: );
3354: } elsif ($target eq 'tex') {
3355: # Turn off some stuff we can't be inside thank you LaTeX
3356:
3357: my $restart_sub = 0;
3358: my $restart_sup = 0;
3359:
3360: # Since <sub> and <sup> are simple tags it's ok to turn off/on
3361: # using the start_ stop_ functions.. those tags only care about
3362: # $target.
3363:
3364: if (&is_inside_of($tagstack, "sub")) {
3365: $restart_sub = 1;
3366: $currentstring .= &end_sub($target, $token, $tagstack,
3367: $parstack, $parser, $safeeval);
3368: }
3369: if (&is_inside_of($tagstack, "sup")) {
3370: $restart_sup = 1;
3371: $currentstring .= &end_sup($target, $token, $tagstack,
3372: $parstack, $parser, $safeeval);
3373: }
3374:
3375: # Now process the applet; just replace it with its alt attribute.
3376:
3377: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3378: $safeeval,undef,1);
3379: unless ($alttag) {
3380: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3381: undef,1);
3382: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3383: $code);
3384: }
3385: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3386: '.}\end{center}';
3387:
3388: # Turn stuff back on that we can't be inside of.
3389:
3390: if ($restart_sub) {
3391: $currentstring .= &start_sub($target, $token, $tagstack,
3392: $parstack, $parser, $safeeval);
3393: }
3394: if ($restart_sup) {
3395: $currentstring .= &start_sup($target, $token, $tagstack,
3396: $parstack, $parser, $safeeval);
3397: }
3398: }
3399: return $currentstring;
3400: }
3401:
3402: sub end_applet {
3403: my ($target,$token) = @_;
3404: my $currentstring = '';
3405: if ($target eq 'web' || $target eq 'webgrade') {
3406: $currentstring = $token->[2];
3407: } elsif ($target eq 'tex') {
3408: }
3409: return $currentstring;
3410: }
3411:
3412: #-- <embed> tag (end tag optional/required)
3413: sub start_embed {
3414: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3415: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3416: &Apache::lonxml::extlink($src);
3417: my $currentstring = '';
3418: if ($target eq 'web' || $target eq 'webgrade') {
3419: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3420: } elsif ($target eq 'tex') {
3421: }
3422: return $currentstring;
3423: }
3424:
3425: sub end_embed {
3426: my ($target,$token) = @_;
3427: my $currentstring = '';
3428: if ($target eq 'web' || $target eq 'webgrade') {
3429: $currentstring = $token->[2];
3430: } elsif ($target eq 'tex') {
3431: # ./.
3432: }
3433: return $currentstring;
3434: }
3435:
3436: #-- <param> tag (end tag forbidden)
3437: sub start_param {
3438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3439: if (&Apache::lonxml::get_param('name',$parstack,
3440: $safeeval,undef,1)=~/^cabbase$/i) {
3441: my $value=&Apache::lonxml::get_param('value',$parstack,
3442: $safeeval,undef,1);
3443: &Apache::lonxml::extlink($value);
3444: }
3445:
3446: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3447: &Apache::lonxml::extlink($src);
3448: my $currentstring = '';
3449: if ($target eq 'web' || $target eq 'webgrade') {
3450: my %toconvert;
3451: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3452: if ($src) { $toconvert{'src'}= $src; }
3453: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3454: undef,1);
3455: if ($name=~/^cabbase$/i) {
3456: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3457: $safeeval,undef,1);
3458: }
3459: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3460: } elsif ($target eq 'tex') {
3461: }
3462: return $currentstring;
3463: }
3464:
3465: sub end_param {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web' || $target eq 'webgrade') {
3469: $currentstring = $token->[2];
3470: } elsif ($target eq 'tex') {
3471: }
3472: return $currentstring;
3473: }
3474:
3475: #-- <allow> tag
3476: sub start_allow {
3477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3478: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3479: &Apache::lonxml::extlink($src);
3480:
3481: if ($target eq 'tex') { &image_replication($src); }
3482: my $result;
3483: if ($target eq 'edit') {
3484: $result .=&Apache::edit::tag_start($target,$token);
3485: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3486: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3487: } elsif ($target eq 'modified') {
3488: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3489: $safeeval,'src');
3490: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3491: }
3492: return $result;
3493: }
3494:
3495: sub end_allow {
3496: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3497: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3498: return '';
3499: }
3500:
3501: #-- Frames (end tag required)
3502: #-- <frameset>
3503: sub start_frameset {
3504: my ($target,$token) = @_;
3505: my $currentstring = ''; # Close any pending para.
3506: if ($target eq 'web' || $target eq 'webgrade') {
3507: $currentstring =
3508: &Apache::loncommon::start_page($Apache::londefdef::title,
3509: $Apache::londefdef::head,
3510: {'add_entries' => $token->[2],
3511: # 'no_title' => 1,
3512: 'force_register' => 1,
3513: 'frameset' => 1,});
3514:
3515: }
3516: return $currentstring;
3517: }
3518:
3519: sub end_frameset {
3520: my ($target,$token) = @_;
3521: my $currentstring = '';
3522: if ($target eq 'web' || $target eq 'webgrade') {
3523: $currentstring = $token->[2];
3524: }
3525: return $currentstring;
3526: }
3527:
3528: #-- <xmp> (end tag required)
3529: sub start_xmp {
3530: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3531: my $currentstring = '';
3532: if ($target eq 'web' || $target eq 'webgrade') {
3533: $currentstring .= $token->[4];
3534: } elsif ($target eq 'tex') {
3535: $currentstring .= '\begin{verbatim}';
3536: }
3537: return $currentstring;
3538: }
3539:
3540: sub end_xmp {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web' || $target eq 'webgrade') {
3544: $currentstring .= $token->[2];
3545: } elsif ($target eq 'tex') {
3546: $currentstring .= '\end{verbatim}';
3547: }
3548: return $currentstring;
3549: }
3550:
3551: #-- <pre> (end tag required)
3552: sub start_pre {
3553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3554: my $currentstring = &end_p(); # close off pending <p>
3555: if ($target eq 'web' || $target eq 'webgrade') {
3556: $currentstring .= $token->[4];
3557: } elsif ($target eq 'tex') {
3558: $currentstring .= '\begin{verbatim}';
3559: &Apache::lonxml::disable_LaTeX_substitutions();
3560: }
3561: return $currentstring;
3562: }
3563:
3564: sub end_pre {
3565: my ($target,$token) = @_;
3566: my $currentstring = '';
3567: if ($target eq 'web' || $target eq 'webgrade') {
3568: $currentstring .= $token->[2];
3569: } elsif ($target eq 'tex') {
3570: $currentstring .= '\end{verbatim}';
3571: &Apache::lonxml::enable_LaTeX_substitutions();
3572: }
3573: return $currentstring;
3574: }
3575:
3576: #-- <insert>
3577: sub start_insert {
3578: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3582: $currentstring .= '<b>'.$display.'</b>';;
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_insert {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring .= '';
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <externallink>
3597: sub start_externallink {
3598: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web' || $target eq 'webgrade') {
3601: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3602: $currentstring .= '<b>'.$display.'</b>';;
3603: }
3604: return $currentstring;
3605: }
3606:
3607: sub end_externallink {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'web' || $target eq 'webgrade') {
3611: $currentstring .= '';
3612: }
3613: return $currentstring;
3614: }
3615:
3616: #-- <blankspace heigth="">
3617: sub start_blankspace {
3618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3619: my $currentstring = &end_p(); # closes off any unclosed <p>
3620: if ($target eq 'tex') {
3621: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3622: $currentstring .= '\vskip '.$howmuch.' ';
3623: }
3624: return $currentstring;
3625: }
3626:
3627: sub end_blankspace {
3628: my ($target,$token) = @_;
3629: my $currentstring = '';
3630: if ($target eq 'tex') {
3631: $currentstring .= '';
3632: }
3633: return $currentstring;
3634: }
3635:
3636: #-- <abbr> tag (end tag required)
3637: sub start_abbr {
3638: my ($target,$token) = @_;
3639: my $currentstring = '';
3640: if ($target eq 'web' || $target eq 'webgrade') {
3641: $currentstring = $token->[4];
3642: }
3643: return $currentstring;
3644: }
3645:
3646: sub end_abbr {
3647: my ($target,$token) = @_;
3648: my $currentstring = '';
3649: if ($target eq 'web' || $target eq 'webgrade') {
3650: $currentstring = $token->[2];
3651: }
3652: return $currentstring;
3653: }
3654:
3655: #-- <acronym> tag (end tag required)
3656: sub start_acronym {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web' || $target eq 'webgrade') {
3660: $currentstring = $token->[4];
3661: }
3662: return $currentstring;
3663: }
3664:
3665: sub end_acronym {
3666: my ($target,$token) = @_;
3667: my $currentstring = '';
3668: if ($target eq 'web' || $target eq 'webgrade') {
3669: $currentstring = $token->[2];
3670: }
3671: return $currentstring;
3672: }
3673:
3674: #-- <area> tag (end tag forbidden)
3675: sub start_area {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[4];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: sub end_area {
3685: my ($target,$token) = @_;
3686: my $currentstring = '';
3687: if ($target eq 'web' || $target eq 'webgrade') {
3688: $currentstring = $token->[2];
3689: }
3690: return $currentstring;
3691: }
3692:
3693: #-- <base> tag (end tag forbidden)
3694: sub start_base {
3695: my ($target,$token) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web' || $target eq 'webgrade') {
3698: $currentstring = $token->[4];
3699: }
3700: return $currentstring;
3701: }
3702:
3703: sub end_base {
3704: my ($target,$token) = @_;
3705: my $currentstring = '';
3706: if ($target eq 'web' || $target eq 'webgrade') {
3707: $currentstring = $token->[2];
3708: }
3709: return $currentstring;
3710: }
3711:
3712: #-- <bdo> tag (end tag required)
3713: sub start_bdo {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web' || $target eq 'webgrade') {
3717: $currentstring = $token->[4];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: sub end_bdo {
3723: my ($target,$token) = @_;
3724: my $currentstring = '';
3725: if ($target eq 'web' || $target eq 'webgrade') {
3726: $currentstring = $token->[2];
3727: }
3728: return $currentstring;
3729: }
3730:
3731: #-- <bgsound> tag (end tag optional)
3732: sub start_bgsound {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[4];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: sub end_bgsound {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web' || $target eq 'webgrade') {
3745: $currentstring = $token->[2];
3746: }
3747: return $currentstring;
3748: }
3749:
3750: #-- <blink> tag (end tag required)
3751: sub start_blink {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[4];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: sub end_blink {
3761: my ($target,$token) = @_;
3762: my $currentstring = '';
3763: if ($target eq 'web' || $target eq 'webgrade') {
3764: $currentstring = $token->[2];
3765: }
3766: return $currentstring;
3767: }
3768:
3769: #-- <blockquote> tag (end tag required)
3770: sub start_blockquote {
3771: my ($target,$token) = @_;
3772: my $currentstring = &end_p(); # Close any unclosed <p>
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring .= $token->[4];
3775: }
3776: if ($target eq 'tex') {
3777: $currentstring .= '\begin{quote}';
3778: }
3779: return $currentstring;
3780: }
3781:
3782: sub end_blockquote {
3783: my ($target,$token) = @_;
3784: my $currentstring = '';
3785: if ($target eq 'web' || $target eq 'webgrade') {
3786: $currentstring = $token->[2];
3787: }
3788: if ($target eq 'tex') {
3789: $currentstring = '\end{quote}';
3790: }
3791: return $currentstring;
3792: }
3793:
3794: #-- <button> tag (end tag required)
3795: sub start_button {
3796: my ($target,$token) = @_;
3797: my $currentstring = '';
3798: if ($target eq 'web' || $target eq 'webgrade') {
3799: $currentstring = $token->[4];
3800: }
3801: return $currentstring;
3802: }
3803:
3804: sub end_button {
3805: my ($target,$token) = @_;
3806: my $currentstring = '';
3807: if ($target eq 'web' || $target eq 'webgrade') {
3808: $currentstring = $token->[2];
3809: }
3810: return $currentstring;
3811: }
3812:
3813: #-- <caption> tag (end tag required)
3814: sub start_caption {
3815: my ($target,$token) = @_;
3816: my $currentstring = '';
3817: if ($target eq 'web' || $target eq 'webgrade') {
3818: $currentstring = $token->[4];
3819: }
3820: return $currentstring;
3821: }
3822:
3823: sub end_caption {
3824: my ($target,$token) = @_;
3825: my $currentstring = '';
3826: if ($target eq 'web' || $target eq 'webgrade') {
3827: $currentstring = $token->[2];
3828: }
3829: return $currentstring;
3830: }
3831:
3832: #-- <col> tag (end tag forbdden)
3833: sub start_col {
3834: my ($target,$token) = @_;
3835: my $currentstring = '';
3836: if ($target eq 'web' || $target eq 'webgrade') {
3837: $currentstring = $token->[4];
3838: }
3839: return $currentstring;
3840: }
3841:
3842: sub end_col {
3843: my ($target,$token) = @_;
3844: my $currentstring = '';
3845: if ($target eq 'web' || $target eq 'webgrade') {
3846: $currentstring = $token->[2];
3847: }
3848: return $currentstring;
3849: }
3850:
3851: #-- <colgroup> tag (end tag optional)
3852: sub start_colgroup {
3853: my ($target,$token) = @_;
3854: my $currentstring = '';
3855: if ($target eq 'web' || $target eq 'webgrade') {
3856: $currentstring = $token->[4];
3857: }
3858: return $currentstring;
3859: }
3860:
3861: sub end_colgroup {
3862: my ($target,$token) = @_;
3863: my $currentstring = '';
3864: if ($target eq 'web' || $target eq 'webgrade') {
3865: $currentstring = $token->[2];
3866: }
3867: return $currentstring;
3868: }
3869:
3870:
3871: #-- <del> tag (end tag required)
3872: sub start_del {
3873: my ($target,$token) = @_;
3874: my $currentstring = '';
3875: if ($target eq 'web' || $target eq 'webgrade') {
3876: $currentstring = $token->[4];
3877: } elsif ($target eq 'tex') {
3878: &disable_para();
3879: $currentstring .= '\st{';
3880: }
3881: return $currentstring;
3882: }
3883:
3884: sub end_del {
3885: my ($target,$token) = @_;
3886: my $currentstring = '';
3887: if ($target eq 'web' || $target eq 'webgrade') {
3888: $currentstring = $token->[2];
3889: } elsif ($target eq 'tex') {
3890: &enable_para();
3891: $currentstring = '}';
3892: }
3893: return $currentstring;
3894: }
3895:
3896: #-- <fieldset> tag (end tag required)
3897: sub start_fieldset {
3898: my ($target,$token) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: $currentstring = $token->[4];
3902: }
3903: return $currentstring;
3904: }
3905:
3906: sub end_fieldset {
3907: my ($target,$token) = @_;
3908: my $currentstring = '';
3909: if ($target eq 'web' || $target eq 'webgrade') {
3910: $currentstring = $token->[2];
3911: }
3912: return $currentstring;
3913: }
3914:
3915: #-- <frame> tag (end tag forbidden)
3916: sub start_frame {
3917: my ($target,$token) = @_;
3918: my $currentstring = '';
3919: if ($target eq 'web' || $target eq 'webgrade') {
3920: $currentstring = $token->[4];
3921: }
3922: return $currentstring;
3923: }
3924:
3925: sub end_frame {
3926: my ($target,$token) = @_;
3927: my $currentstring = '';
3928: if ($target eq 'web' || $target eq 'webgrade') {
3929: $currentstring = $token->[2];
3930: }
3931: return $currentstring;
3932: }
3933:
3934: #-- <iframe> tag (end tag required)
3935: sub start_iframe {
3936: my ($target,$token) = @_;
3937: my $currentstring = '';
3938: if ($target eq 'web' || $target eq 'webgrade') {
3939: $currentstring = $token->[4];
3940: }
3941: return $currentstring;
3942: }
3943:
3944: sub end_iframe {
3945: my ($target,$token) = @_;
3946: my $currentstring = '';
3947: if ($target eq 'web' || $target eq 'webgrade') {
3948: $currentstring = $token->[2];
3949: }
3950: return $currentstring;
3951: }
3952:
3953: #-- <ins> tag (end tag required)
3954: sub start_ins {
3955: my ($target,$token) = @_;
3956: my $currentstring = '';
3957: if ($target eq 'web' || $target eq 'webgrade') {
3958: $currentstring = $token->[4];
3959: }
3960: return $currentstring;
3961: }
3962:
3963: sub end_ins {
3964: my ($target,$token) = @_;
3965: my $currentstring = '';
3966: if ($target eq 'web' || $target eq 'webgrade') {
3967: $currentstring = $token->[2];
3968: }
3969: return $currentstring;
3970: }
3971:
3972: #-- <isindex> tag (end tag forbidden)
3973: sub start_isindex {
3974: my ($target,$token) = @_;
3975: my $currentstring = '';
3976: if ($target eq 'web' || $target eq 'webgrade') {
3977: $currentstring = $token->[4];
3978: }
3979: return $currentstring;
3980: }
3981:
3982: sub end_isindex {
3983: my ($target,$token) = @_;
3984: my $currentstring = '';
3985: if ($target eq 'web' || $target eq 'webgrade') {
3986: $currentstring = $token->[2];
3987: }
3988: return $currentstring;
3989: }
3990:
3991: #-- <keygen> tag (end tag forbidden)
3992: sub start_keygen {
3993: my ($target,$token) = @_;
3994: my $currentstring = '';
3995: if ($target eq 'web' || $target eq 'webgrade') {
3996: $currentstring = $token->[4];
3997: }
3998: return $currentstring;
3999: }
4000:
4001: sub end_keygen {
4002: my ($target,$token) = @_;
4003: my $currentstring = '';
4004: if ($target eq 'web' || $target eq 'webgrade') {
4005: $currentstring = $token->[2];
4006: }
4007: return $currentstring;
4008: }
4009:
4010: #-- <label> tag
4011: sub start_label {
4012: my ($target,$token) = @_;
4013: my $currentstring = '';
4014: if ($target eq 'web' || $target eq 'webgrade') {
4015: $currentstring = $token->[4];
4016: }
4017: return $currentstring;
4018: }
4019:
4020: sub end_label {
4021: my ($target,$token) = @_;
4022: my $currentstring = '';
4023: if ($target eq 'web' || $target eq 'webgrade') {
4024: $currentstring = $token->[2];
4025: }
4026: return $currentstring;
4027: }
4028:
4029: #-- <layer> tag (end tag required)
4030: sub start_layer {
4031: my ($target,$token) = @_;
4032: my $currentstring = '';
4033: if ($target eq 'web' || $target eq 'webgrade') {
4034: $currentstring = $token->[4];
4035: }
4036: return $currentstring;
4037: }
4038:
4039: sub end_layer {
4040: my ($target,$token) = @_;
4041: my $currentstring = '';
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: $currentstring = $token->[2];
4044: }
4045: return $currentstring;
4046: }
4047:
4048: #-- <legend> tag (end tag required)
4049: sub start_legend {
4050: my ($target,$token) = @_;
4051: my $currentstring = '';
4052: if ($target eq 'web' || $target eq 'webgrade') {
4053: $currentstring = $token->[4];
4054: }
4055: return $currentstring;
4056: }
4057:
4058: sub end_legend {
4059: my ($target,$token) = @_;
4060: my $currentstring = '';
4061: if ($target eq 'web' || $target eq 'webgrade') {
4062: $currentstring = $token->[2];
4063: }
4064: return $currentstring;
4065: }
4066:
4067: #-- <link> tag (end tag forbidden)
4068: sub start_link {
4069: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
4070: my $currentstring = '';
4071: if ($target eq 'web' || $target eq 'webgrade') {
4072: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
4073: undef,1);
4074: &Apache::lonxml::extlink($href);
4075: $currentstring = $token->[4];
4076: }
4077: return $currentstring;
4078: }
4079:
4080: sub end_link {
4081: my ($target,$token) = @_;
4082: my $currentstring = '';
4083: if ($target eq 'web' || $target eq 'webgrade') {
4084: $currentstring = $token->[2];
4085: }
4086: return $currentstring;
4087: }
4088:
4089: #-- <marquee> tag (end tag optional)
4090: sub start_marquee {
4091: my ($target,$token) = @_;
4092: my $currentstring = '';
4093: if ($target eq 'web' || $target eq 'webgrade') {
4094: $currentstring = $token->[4];
4095: }
4096: return $currentstring;
4097: }
4098:
4099: sub end_marquee {
4100: my ($target,$token) = @_;
4101: my $currentstring = '';
4102: if ($target eq 'web' || $target eq 'webgrade') {
4103: $currentstring = $token->[2];
4104: }
4105: return $currentstring;
4106: }
4107:
4108: #-- <multicol> tag (end tag required)
4109: sub start_multicol {
4110: my ($target,$token) = @_;
4111: my $currentstring = &end_p(); # Close any pending <p>
4112: if ($target eq 'web' || $target eq 'webgrade') {
4113: $currentstring .= $token->[4];
4114: }
4115: return $currentstring;
4116: }
4117:
4118: sub end_multicol {
4119: my ($target,$token) = @_;
4120: my $currentstring = '';
4121: if ($target eq 'web' || $target eq 'webgrade') {
4122: $currentstring = $token->[2];
4123: }
4124: return $currentstring;
4125: }
4126:
4127: #-- <nobr> tag (end tag required)
4128: sub start_nobr {
4129: my ($target,$token) = @_;
4130: my $currentstring = '';
4131: if ($target eq 'web' || $target eq 'webgrade') {
4132: $currentstring = $token->[4];
4133: } elsif ($target eq 'tex') {
4134: $currentstring='\mbox{';
4135: }
4136: return $currentstring;
4137: }
4138:
4139: sub end_nobr {
4140: my ($target,$token) = @_;
4141: my $currentstring = '';
4142: if ($target eq 'web' || $target eq 'webgrade') {
4143: $currentstring = $token->[2];
4144: } elsif ($target eq 'tex') {
4145: $currentstring='}';
4146: }
4147: return $currentstring;
4148: }
4149:
4150: #-- <noembed> tag (end tag required)
4151: sub start_noembed {
4152: my ($target,$token) = @_;
4153: my $currentstring = '';
4154: if ($target eq 'web' || $target eq 'webgrade') {
4155: $currentstring = $token->[4];
4156: }
4157: return $currentstring;
4158: }
4159:
4160: sub end_noembed {
4161: my ($target,$token) = @_;
4162: my $currentstring = '';
4163: if ($target eq 'web' || $target eq 'webgrade') {
4164: $currentstring = $token->[2];
4165: }
4166: return $currentstring;
4167: }
4168:
4169: #-- <noframes> tag (end tag required)
4170: sub start_noframes {
4171: my ($target,$token) = @_;
4172: my $currentstring = '';
4173: if ($target eq 'web' || $target eq 'webgrade') {
4174: $currentstring = $token->[4];
4175: }
4176: return $currentstring;
4177: }
4178:
4179: sub end_noframes {
4180: my ($target,$token) = @_;
4181: my $currentstring = '';
4182: if ($target eq 'web' || $target eq 'webgrade') {
4183: $currentstring = $token->[2];
4184: }
4185: return $currentstring;
4186: }
4187:
4188: #-- <nolayer> tag (end tag required)
4189: sub start_nolayer {
4190: my ($target,$token) = @_;
4191: my $currentstring = '';
4192: if ($target eq 'web' || $target eq 'webgrade') {
4193: $currentstring = $token->[4];
4194: }
4195: return $currentstring;
4196: }
4197:
4198: sub end_nolayer {
4199: my ($target,$token) = @_;
4200: my $currentstring = '';
4201: if ($target eq 'web' || $target eq 'webgrade') {
4202: $currentstring = $token->[2];
4203: }
4204: return $currentstring;
4205: }
4206:
4207: #-- <noscript> tag (end tag required)
4208: sub start_noscript {
4209: my ($target,$token) = @_;
4210: my $currentstring = '';
4211: if ($target eq 'web' || $target eq 'webgrade') {
4212: $currentstring = $token->[4];
4213: }
4214: return $currentstring;
4215: }
4216:
4217: sub end_noscript {
4218: my ($target,$token) = @_;
4219: my $currentstring = '';
4220: if ($target eq 'web' || $target eq 'webgrade') {
4221: $currentstring = $token->[2];
4222: }
4223: return $currentstring;
4224: }
4225:
4226: #-- <object> tag (end tag required)
4227: sub start_object {
4228: my ($target,$token) = @_;
4229: my $currentstring = '';
4230: if ($target eq 'web' || $target eq 'webgrade') {
4231: $currentstring = $token->[4];
4232: }
4233: return $currentstring;
4234: }
4235:
4236: sub end_object {
4237: my ($target,$token) = @_;
4238: my $currentstring = '';
4239: if ($target eq 'web' || $target eq 'webgrade') {
4240: $currentstring = $token->[2];
4241: }
4242: return $currentstring;
4243: }
4244:
4245: #-- <optgroup> tag (end tag required)
4246: sub start_optgroup {
4247: my ($target,$token) = @_;
4248: my $currentstring = '';
4249: if ($target eq 'web' || $target eq 'webgrade') {
4250: $currentstring = $token->[4];
4251: }
4252: return $currentstring;
4253: }
4254:
4255: sub end_optgroup {
4256: my ($target,$token) = @_;
4257: my $currentstring = '';
4258: if ($target eq 'web' || $target eq 'webgrade') {
4259: $currentstring = $token->[2];
4260: }
4261: return $currentstring;
4262: }
4263:
4264: #-- <samp> tag (end tag required)
4265: sub start_samp {
4266: my ($target,$token) = @_;
4267: my $currentstring = '';
4268: if ($target eq 'web' || $target eq 'webgrade') {
4269: $currentstring = $token->[4];
4270: } elsif ($target eq 'tex') {
4271: $currentstring='\texttt{';
4272: }
4273: return $currentstring;
4274: }
4275:
4276: sub end_samp {
4277: my ($target,$token) = @_;
4278: my $currentstring = '';
4279: if ($target eq 'web' || $target eq 'webgrade') {
4280: $currentstring = $token->[2];
4281: } elsif ($target eq 'tex') {
4282: $currentstring='}';
4283: }
4284: return $currentstring;
4285: }
4286:
4287: #-- <server> tag
4288: sub start_server {
4289: my ($target,$token) = @_;
4290: my $currentstring = '';
4291: if ($target eq 'web' || $target eq 'webgrade') {
4292: $currentstring = $token->[4];
4293: }
4294: return $currentstring;
4295: }
4296:
4297: sub end_server {
4298: my ($target,$token) = @_;
4299: my $currentstring = '';
4300: if ($target eq 'web' || $target eq 'webgrade') {
4301: $currentstring = $token->[2];
4302: }
4303: return $currentstring;
4304: }
4305:
4306: #-- <spacer> tag (end tag forbidden)
4307: sub start_spacer {
4308: my ($target,$token) = @_;
4309: my $currentstring = &end_p(); # Close off any open <p> tag.
4310: if ($target eq 'web' || $target eq 'webgrade') {
4311: $currentstring .= $token->[4];
4312: }
4313: return $currentstring;
4314: }
4315:
4316: sub end_spacer {
4317: my ($target,$token) = @_;
4318: my $currentstring = '';
4319: if ($target eq 'web' || $target eq 'webgrade') {
4320: $currentstring = $token->[2];
4321: }
4322: return $currentstring;
4323: }
4324:
4325: #-- <span> tag (end tag required)
4326: sub start_span {
4327: my ($target,$token) = @_;
4328: my $currentstring = '';
4329: if ($target eq 'web' || $target eq 'webgrade') {
4330: $currentstring = $token->[4];
4331: }
4332: return $currentstring;
4333: }
4334:
4335: sub end_span {
4336: my ($target,$token) = @_;
4337: my $currentstring = '';
4338: if ($target eq 'web' || $target eq 'webgrade') {
4339: $currentstring = $token->[2];
4340: }
4341: return $currentstring;
4342: }
4343:
4344: #-- <tbody> tag (end tag optional)
4345: sub start_tbody {
4346: my ($target,$token) = @_;
4347: my $currentstring = '';
4348: if ($target eq 'web' || $target eq 'webgrade') {
4349: $currentstring = $token->[4];
4350: }
4351: return $currentstring;
4352: }
4353:
4354: sub end_tbody {
4355: my ($target,$token) = @_;
4356: my $currentstring = '';
4357: if ($target eq 'web' || $target eq 'webgrade') {
4358: $currentstring = $token->[2];
4359: }
4360: return $currentstring;
4361: }
4362:
4363: #-- <tfoot> tag (end tag optional)
4364: sub start_tfoot {
4365: my ($target,$token) = @_;
4366: my $currentstring = '';
4367: if ($target eq 'web' || $target eq 'webgrade') {
4368: $currentstring = $token->[4];
4369: }
4370: return $currentstring;
4371: }
4372:
4373: sub end_tfoot {
4374: my ($target,$token) = @_;
4375: my $currentstring = '';
4376: if ($target eq 'web' || $target eq 'webgrade') {
4377: $currentstring = $token->[2];
4378: }
4379: return $currentstring;
4380: }
4381:
4382: #-- <thead> tag (end tag optional)
4383: sub start_thead {
4384: my ($target,$token) = @_;
4385: my $currentstring = '';
4386: if ($target eq 'web' || $target eq 'webgrade') {
4387: $currentstring = $token->[4];
4388: }
4389: return $currentstring;
4390: }
4391:
4392: sub end_thead {
4393: my ($target,$token) = @_;
4394: my $currentstring = '';
4395: if ($target eq 'web' || $target eq 'webgrade') {
4396: $currentstring = $token->[2];
4397: }
4398: return $currentstring;
4399: }
4400:
4401: #-- <var> tag
4402: sub start_var {
4403: my ($target,$token) = @_;
4404: my $currentstring = '';
4405: if ($target eq 'web' || $target eq 'webgrade') {
4406: $currentstring = $token->[4];
4407: } elsif ($target eq 'tex') {
4408: $currentstring = '\textit{';
4409: }
4410: return $currentstring;
4411: }
4412:
4413: sub end_var {
4414: my ($target,$token) = @_;
4415: my $currentstring = '';
4416: if ($target eq 'web' || $target eq 'webgrade') {
4417: $currentstring = $token->[2];
4418: } elsif ($target eq 'tex') {
4419: $currentstring = '}';
4420: }
4421: return $currentstring;
4422: }
4423:
4424: #-- <wbr> tag (end tag forbidden)
4425: sub start_wbr {
4426: my ($target,$token) = @_;
4427: my $currentstring = '';
4428: if ($target eq 'web' || $target eq 'webgrade') {
4429: $currentstring = $token->[4];
4430: }
4431: return $currentstring;
4432: }
4433:
4434: sub end_wbr {
4435: my ($target,$token) = @_;
4436: my $currentstring = '';
4437: if ($target eq 'web' || $target eq 'webgrade') {
4438: $currentstring = $token->[2];
4439: }
4440: return $currentstring;
4441: }
4442:
4443: #-- <hideweboutput> tag
4444: sub start_hideweboutput {
4445: my ($target,$token) = @_;
4446: if ($target eq 'web' || $target eq 'webgrade') {
4447: &Apache::lonxml::startredirection();
4448: }
4449: return '';
4450: }
4451:
4452: sub end_hideweboutput {
4453: my ($target,$token) = @_;
4454: my $currentstring = '';
4455: if ($target eq 'web' || $target eq 'webgrade') {
4456: $currentstring = &Apache::lonxml::endredirection();
4457: }
4458: return '';
4459: }
4460:
4461:
4462: sub image_replication {
4463: my $src = shift;
4464: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4465: #replicates eps or ps
4466: my $epssrc = my $pssrc = $src;
4467: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4468: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4469: if (not -e $epssrc && not -e $pssrc) {
4470: my $result=&Apache::lonnet::repcopy($epssrc);
4471: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4472: }
4473: return '';
4474: }
4475:
4476:
4477:
4478: sub resize_image {
4479: my ($height_param, $width_param, $scaling,
4480: $parstack, $safeeval, $depth, $cis) = @_;
4481:
4482: # First apply the scaling...
4483:
4484: $height_param = $height_param * $scaling;
4485: $width_param = $width_param * $scaling;
4486:
4487: #do we have any specified LaTeX size of the picture?
4488: my $toget='TeXwidth';
4489: if ($cis) {
4490: $toget=lc($toget);
4491: }
4492: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4493: $safeeval,$depth,$cis);
4494: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4495: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4496: $safeeval,$depth,$cis);
4497: #do we have any specified web size of the picture?
4498: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4499: $depth,1);
4500: if ($TeXwidth) {
4501: my $old_width_param=$width_param;
4502: if ($TeXwidth=~/(\d+)\s*\%/) {
4503: $width_param = $1*$env{'form.textwidth'}/100;
4504: } else {
4505: $width_param = $TeXwidth;
4506: }
4507: if ($TeXheight) {
4508: $height_param = $TeXheight;
4509: } elsif ($old_width_param) {
4510: $height_param=$TeXwidth/$old_width_param*$height_param;
4511: }
4512: } elsif ($TeXheight) {
4513: $height_param = $TeXheight;
4514: if ($height_param) {
4515: $width_param = $TeXheight/$height_param*$width_param;
4516: }
4517: } elsif ($width) {
4518: my $old_width_param=$width_param;
4519: $width_param = $width*$scaling;
4520: if ($old_width_param) {
4521: $height_param=$width_param/$old_width_param*$height_param;
4522: }
4523: }
4524: if ($width_param > $env{'form.textwidth'}) {
4525: my $old_width_param=$width_param;
4526: $width_param =0.95*$env{'form.textwidth'};
4527: if ($old_width_param) {
4528: $height_param=$width_param/$old_width_param*$height_param;
4529: }
4530: }
4531:
4532: return ($height_param, $width_param);
4533: }
4534:
4535: sub image_size {
4536: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4537:
4538: #size of image from gif/jpg/jpeg/png
4539: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4540: if (-e $ressrc) {
4541: $src = $ressrc;
4542: }
4543: my $image = Image::Magick->new;
4544: my $current_figure = $image->Read($src);
4545: my $width_param = $image->Get('width');
4546: my $height_param = $image->Get('height');
4547: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4548: undef($image);
4549:
4550: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4551: $scaling, $parstack, $safeeval,
4552: $depth, $cis);
4553:
4554: return ($height_param, $width_param);
4555: }
4556:
4557: sub image_width {
4558: my ($height, $width) = &image_size(@_);
4559: return $width;
4560: }
4561: # Not yet 100% sure this is correct in all circumstances..
4562: # due to my uncertainty about mods to image_size.
4563: #
4564: sub image_height {
4565: my ($height, $width) = &image_size(@_);
4566: return $height;
4567: }
4568:
4569: sub get_eps_image {
4570: my ($src)=@_;
4571: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4572:
4573: # In order to prevent the substitution of the alt text, we need to
4574: # be sure the orig_src file is on system now so:
4575:
4576: if (! -e $orig_src) {
4577: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4578: }
4579: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4580: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4581: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4582: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4583: &Apache::lonxml::debug("Filelocation gives: $src");
4584: if (! -e $src) {
4585: &Apache::lonxml::debug("$src does not exist");
4586: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4587: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4588: #if replication failed try to find ps file
4589: $src=~s/\.eps$/\.ps/;
4590: &Apache::lonxml::debug("Now looking for $src");
4591: #if no ps file try to replicate it.
4592: my $didrepcopy = &Apache::lonnet::repcopy($src);
4593: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4594: if ( (not -e $src) ||
4595: ($didrepcopy ne 'ok')) {
4596: &Apache::lonxml::debug("Failed to find or replicate $src");
4597:
4598: #if replication failed try to produce eps file dynamically
4599: $src=~s/\.ps$/\.eps/;
4600: my $temp_file;
4601: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4602: my $newsrc=$orig_src;
4603: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4604: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4605: print FILE ("$newsrc\n");
4606: close(FILE);
4607: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4608: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4609: if ($sext ne "") { # Put the ext. back in to uniquify.
4610: $src =~ s/\.eps$/$sext.eps/;
4611: }
4612:
4613: }
4614:
4615: }
4616: } else {
4617: # If the postscript file has spaces in its name,
4618: # LaTeX will gratuitiously vomit. Therefore
4619: # queue such files for copy with " " replaced by "_".
4620: # printout.pm will know them by their .ps or .eps extensions.
4621: my $newsrc = $orig_src;
4622: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4623: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4624: print FILE "$src\n";
4625: close FILE;
4626: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4627: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4628: }
4629: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4630: $path =~ s/ /\_/g;
4631: $file =~ s/ /\_/g;
4632: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4633: return ($path.'/',$file);
4634: }
4635:
4636: sub eps_generation {
4637: my ($src,$file,$width_param) = @_;
4638: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4639: my $temp_file = Apache::File->new('>>'.$filename);
4640: print $temp_file "$src\n";
4641: my $newsrc = $src;
4642: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4643: $newsrc=~s{/home/httpd/html/res}{};
4644: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4645: $newsrc=~s{/\./}{/};
4646: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4647: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4648: $newsrc=~s{/home/httpd/lonUsers}{};
4649: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4650: }
4651: if ($newsrc=~m{/userfiles/}) {
4652: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4653: } else {
4654: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4655: }
4656: }
4657:
4658: sub file_path {
4659: my $src=shift;
4660: my ($file,$path);
4661: if ($src =~ m!(.*)/([^/]*)$!) {
4662: $file = $2;
4663: $path = $1.'/';
4664: }
4665: return $file,$path;
4666: }
4667:
4668:
4669: sub recalc {
4670: my $argument = shift;
4671: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4672: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4673: my $value=$1;
4674: my $units=$2;
4675: if ($units eq 'cm') {
4676: $value*=10;
4677: } elsif ($units eq 'in') {
4678: $value*=25.4;
4679: } elsif ($units eq 'pc') {
4680: $value*=(25.4*12/72.27);
4681: } elsif ($units eq 'pt') {
4682: $value*=(25.4/72.27);
4683: }
4684: return $value.' mm';
4685: }
4686:
4687: sub LATEX_length {
4688: my $garbage=shift;
4689: $garbage=~s/^\s+$//;
4690: $garbage=~s/^\s+(\S.*)/$1/;#space before
4691: $garbage=~s/(.*\S)\s+$/$1/;#space after
4692: $garbage=~s/(\s)+/$1/;#only one space
4693: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4694: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4695: $garbage=~s/([^\\])\$/$1/g;#$
4696: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4697: $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;
4698: $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;
4699: $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;
4700: $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;
4701: $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;
4702: $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;
4703: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4704: #remove some other LaTeX command
4705: $garbage=~s|\\(\w+)\\|\\|g;
4706: $garbage=~s|\\(\w+)(\s*)|$2|g;
4707: $garbage=~s|\+|11|g;
4708: my $value=length($garbage);
4709: return $value;
4710: }
4711:
4712:
4713: sub align_latex_image {
4714: my ($align, $latex_rendering, $image, $width, $height) = @_;
4715: my $currentstring; # The 1/2 wrapped image.
4716: my $closure; # The closure of the wrappage.
4717:
4718: # if it's none just return it back
4719: if ($latex_rendering eq 'none') {
4720: return ($image,'');
4721: }
4722:
4723: # If there's an alignment specification we need to honor it here.
4724: # For the horizontal alignments, we will also honor the
4725: # value of the latex specfication. The default is parbox,
4726: # and that's used for illegal values too.
4727: #
4728: # Even though we set a default alignment value, the user
4729: # could have given us an illegal value. In that case we
4730: # just use the default alignment of bottom..
4731: $currentstring = '';
4732: if ($align eq "top") {
4733: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4734: $closure = '}';
4735: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4736: my $offset = $height/2;
4737: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4738: $closure = '}';
4739: } elsif ($align eq "left") {
4740: if ($latex_rendering eq "parpic") {
4741: $currentstring .= '\parpic[l]{'.$image;
4742: $closure = '}';
4743: } elsif ($latex_rendering eq "parbox") {
4744: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4745: .$image;
4746: $closure = '\end{minipage}';
4747: } elsif ($latex_rendering eq "wrapfigure"
4748: || $latex_rendering ne 'none') { # wrapfig render
4749: $currentstring .=
4750: '\begin{wrapfigure}{l}{'.$width.'mm}'
4751: .'\scalebox{1.0}{'.$image;
4752: $closure = '}\end{wrapfigure}';
4753: }
4754: } elsif ($align eq "right") {
4755: if ($latex_rendering eq "parpic") {
4756: $currentstring .= '\parpic[r]{'.$image;
4757: $closure = '}';
4758: } elsif ($latex_rendering eq "parbox") {
4759: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4760: .$image;
4761: $closure = '\end{minipage}';
4762: } elsif ($latex_rendering eq "wrapfigure"
4763: || $latex_rendering ne 'none') { # wrapfig render
4764: $currentstring .=
4765: '\begin{wrapfigure}{r}{'.$width.'mm}'
4766: .'\scalebox{1.0}{'.$image;
4767: $closure = '}\end{wrapfigure}';
4768: }
4769: } else { # Bottom is also default.
4770: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4771: $currentstring .= "{$image";
4772: $closure = '}';
4773: }
4774: return ($currentstring, $closure);
4775: }
4776:
4777:
4778: sub is_inside_of {
4779: my ($tagstack, $tag) = @_;
4780: my @stack = @$tagstack;
4781: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4782: if ($stack[$i] eq $tag) {
4783: return 1;
4784: }
4785: }
4786: return 0;
4787: }
4788:
4789:
4790: #
4791: # This sub provides the typical LaTeX prefix matter for tex output:
4792: #
4793: sub latex_header {
4794: my ($mode) = @_;
4795: my $currentstring = '';
4796:
4797: $currentstring .=
4798: "\n% &Apache::lonxml::londefdef \n" .
4799: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4800: if (($env{'form.latex_type'}=~'batchmode') ||
4801: (!$env{'request.role.adv'}) ||
4802: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4803: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4804: '\renewcommand{\deg}{$^{\circ}$}'.
4805: '\usepackage{multirow}'.
4806: '\usepackage{longtable}'.
4807: '\usepackage{textcomp}'.
4808: '\usepackage{makeidx}'.
4809: '\usepackage[dvips]{graphicx}'.
4810: '\usepackage{wrapfig}'.
4811: '\usepackage{picins}'.
4812: '\usepackage[T1]{fontenc}'."\n".
4813: '\usepackage{lmodern}'."\n".
4814: '\usepackage[postscript]{ucs}'."\n".
4815: '\usepackage[utf8x]{inputenc}'."\n".
4816: '\usepackage{pifont}' ."\n".
4817: '\usepackage{latexsym}'."\n".
4818: '\usepackage{epsfig}'.
4819: "\\usepackage{xtab}\n".
4820: "\\usepackage{tabularx}\n".
4821: "\\usepackage{booktabs}\n".
4822: "\\usepackage{array}\n".
4823: "\\usepackage{colortbl}\n".
4824: "\\usepackage{xcolor}\n".
4825: '\usepackage{calc}'.
4826: '\usepackage{amsmath}'.
4827: '\usepackage{soul}',
4828: '\usepackage{amssymb}'.
4829: '\usepackage{amsfonts}'.
4830: '\usepackage{amsthm}'.
4831: '\usepackage{amscd}'
4832: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4833: '\usepackage[T1]{fontenc}'."\n".
4834: '\usepackage{lmodern}'."\n".
4835: '\usepackage[postscript]{ucs}'."\n".
4836: '\usepackage[utf8x]{inputenc}'."\n".
4837: '\usepackage{pifont}' . "\n";
4838:
4839: if($env{'form.pdfFormFields'} eq 'yes') {
4840: $currentstring .= '\usepackage{hyperref}'.
4841: '\usepackage{eforms}'.
4842: '\usepackage{tabularx}';
4843: }
4844:
4845: $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}}'.
4846: '\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}}';
4847: $currentstring .= '\begin{document}';
4848:
4849: return $currentstring;
4850:
4851: }
4852:
4853: =pod
4854:
4855: =head1 NAME
4856:
4857: Apache::londefdef.pm
4858:
4859: =head1 SYNOPSIS
4860:
4861: Tags Default Definition Module
4862:
4863: This is part of the LearningOnline Network with CAPA project
4864: described at http://www.lon-capa.org.
4865:
4866:
4867: =head1 NOTABLE SUBROUTINES
4868:
4869: =over
4870:
4871: =item start_hideweboutput()
4872:
4873: =item end_hideweboutput()
4874:
4875: =item image_replication()
4876:
4877: =item resize_image()
4878:
4879: Get correct sizing parameter for an image given
4880: it's initial ht. and wid. This allows sizing of
4881: images that are generated on-the-fly (e.g. gnuplot)
4882: as well as serving as a utility for image_size.
4883:
4884: Parameter:
4885: height_param
4886: width_param - Initial picture dimensions.
4887: scaling - A scale factor.
4888: parstack, - the current stack of tag attributes
4889: from the xml parser
4890: safeeval, - pointer to the safespace
4891: depth, - from what level in the stack to look for attributes
4892: (assumes -1 if unspecified)
4893: cis - look for attrubutes case insensitively
4894: (assumes false)
4895:
4896: Returns:
4897: height, width - new dimensions.
4898:
4899: =item image_size()
4900:
4901: =item image_width()
4902:
4903: =item image_height()
4904:
4905: =item get_eps_image()
4906:
4907: =item eps_generation()
4908:
4909: =item file_path()
4910:
4911: =item recalc()
4912:
4913: Converts a measurement in to mm from any of
4914: the other valid LaTeX units of measure.
4915: If the units of measure are missing from the
4916: parameter, it is assumed to be in and returned
4917: with mm units of measure
4918:
4919: =item LATEX_length()
4920:
4921: =item align_latex_image()
4922:
4923: Wrap image 'stuff' inside of the LaTeX required to implement
4924: alignment:
4925: align_tex_image(align, latex_rendering, image)
4926: Where:
4927: align - The HTML alignment specification.
4928: latex_rendering - rendering hint for latex.
4929: image - The LaTeX needed to insert the image itsef.
4930: width,height - dimensions of the image.
4931: Returns:
4932: The 1/2 wrapped image and the stuff required to close the
4933: wrappage. This allows e.g. randomlabel to insert more stuff
4934: into the closure.
4935:
4936:
4937: =item is_inside_of($tagstack, $tag)
4938: This sub returns true if the current state of Xml processing is inside of the tag.
4939: Parameters:
4940: tagstack - The tagstack from the parser.
4941: tag - The tag (without the <>'s.).
4942: Sample usage:
4943: if (is_inside_of($tagstack "table")) {
4944: I'm in a table....
4945: }
4946:
4947:
4948:
4949: =back
4950:
4951: =cut
4952:
4953:
4954: 1;
4955: __END__
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