1:
2: # The LearningOnline Network with CAPA
3: # Tags Default Definition Module
4: #
5: # $Id: londefdef.pm,v 1.432 2011/09/15 19:03:19 raeburn Exp $
6: #
7: #
8: # Copyright Michigan State University Board of Trustees
9: #
10: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
11: #
12: # LON-CAPA is free software; you can redistribute it and/or modify
13: # it under the terms of the GNU General Public License as published by
14: # the Free Software Foundation; either version 2 of the License, or
15: # (at your option) any later version.
16: #
17: # LON-CAPA is distributed in the hope that it will be useful,
18: # but WITHOUT ANY WARRANTY; without even the implied warranty of
19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20: # GNU General Public License for more details.
21: #
22: # You should have received a copy of the GNU General Public License
23: # along with LON-CAPA; if not, write to the Free Software
24: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25: #
26: # /home/httpd/html/adm/gpl.txt
27: #
28: # http://www.lon-capa.org/
29: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
30: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
31: # binary executable programs or libraries distributed by the
32: # Michigan State University (the "Licensee"), but any binaries so
33: # distributed are hereby licensed only for use in the context
34: # of a program or computational system for which the Licensee is the
35: # primary author or distributor, and which performs substantial
36: # additional tasks beyond the translation of (La)TeX into HTML.
37: # The C source of the Code may not be distributed by the Licensee
38: # to any other parties under any circumstances.
39: #
40:
41: package Apache::londefdef;
42:
43: use Apache::lonnet;
44: use strict;
45: use Apache::lonxml;
46: use Apache::lontable;
47: use Image::Magick;
48: use Apache::lonmenu();
49: use Apache::lonmeta();
50: use Apache::lonlocal;
51: use Apache::loncommon();
52: use Apache::Constants qw(:common);
53: use File::Basename;
54: use LONCAPA();
55: # use Data::Dumper;
56:
57: BEGIN {
58:
59: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
60:
61: }
62:
63:
64: sub initialize_londefdef {
65: $Apache::londefdef::TD_redirection=0;
66: @Apache::londefdef::table = ();
67: $Apache::londefdef::select=0;
68: undef(@Apache::londefdef::description);
69: @Apache::londefdef::DD=(0);
70: @Apache::londefdef::DT=(0);
71: @Apache::londefdef::seenDT=(0);
72: $Apache::londefdef::list_index=0;
73: undef($Apache::londefdef::head);
74: undef($Apache::londefdef::title);
75: }
76:
77: #======================= TAG SUBROUTINES =====================
78: #-- <output>
79: sub start_output {
80: my ($target) = @_;
81: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
82: return '';
83: }
84: sub end_output {
85: my ($target) = @_;
86: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
87: return '';
88: }
89: #-- <m> tag
90: sub start_m {
91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
92: my $currentstring = '';
93: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
94: if ($target eq 'web' || $target eq 'analyze') {
95: &Apache::lonxml::debug("M is starting with:$inside:");
96: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
97: if ($eval eq 'on') {
98: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
99: #&Apache::lonxml::debug("M is evaluated to:$inside:");
100: }
101: my $tex = $inside;
102: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
103: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
104: if ($Apache::lontexconvert::errorstring) {
105: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
106: $tex = &HTML::Entities::encode($tex,'<>&"');
107: my ($linenumber) =
108: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
109: if (defined($linenumber)) {
110: my @tex=split("\n",$tex);
111: $tex[$linenumber]='<b><font color="red">'.
112: $tex[$linenumber].'</font></b>';
113: $tex=join("\n",@tex);
114: }
115: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
116: $Apache::lontexconvert::errorstring='';
117: }
118: #&Apache::lonxml::debug("M is ends with:$currentstring:");
119: $Apache::lonxml::post_evaluate=0;
120: } elsif ($target eq 'tex') {
121:
122: $currentstring = $inside;
123: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
124: if ($eval eq 'on') {
125: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
126: }
127: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
128: # detect simple math mode entry exits, and convert them
129: # to use \ensuremath ... unless there's a \verb inside.
130: if (! ($currentstring=~/\\verb/)) {
131: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
132: $currentstring=~s/^(\s*)\$/$1/;
133: $currentstring=~s/\$(\s*)$/$1/;
134: $currentstring='\ensuremath{'.$currentstring.'}';
135: }
136: }
137: $Apache::lonxml::post_evaluate=0;
138: }
139: return $currentstring;
140: }
141:
142: sub end_m {
143: my ($target,$token) = @_;
144: my $currentstring = '';
145: if ($target eq 'tex') {
146: $currentstring = "";
147: }
148: return $currentstring;
149: }
150:
151: sub start_tthoption {
152: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
153: my $result;
154: if ($target eq 'web' || $target eq 'webgrade') {
155: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
156: $style);
157: $inside=~s/^\s*//;
158: if ($env{'browser.mathml'}) {
159: &tth::ttmoptions($inside);
160: } else {
161: &tth::tthoptions($inside);
162: }
163: }
164: return $result;
165: }
166:
167: sub end_tthoption {
168: my ($target,$token) = @_;
169: my $result;
170: return $result;
171: }
172:
173: #-- <html> tag (end tag optional)
174: sub start_html {
175: my ($target,$token) = @_;
176: my $currentstring = '';
177: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
178: # start_body() takes care of emitting the <html>
179: } elsif ($target eq 'tex') {
180:
181: $currentstring .= &latex_header();
182: }
183: return $currentstring;
184: }
185:
186: sub end_html {
187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
188: my $currentstring = '';
189: if ($target eq 'web' || $target eq 'webgrade') {
190: # end_body takes care of the </html>
191: }
192: return $currentstring;
193: }
194:
195: #-- <head> tag (end tag optional)
196: sub start_head {
197: my ($target,$token) = @_;
198: my $currentstring = '';
199: if ($target eq 'web' || $target eq 'webgrade') {
200: &Apache::lonxml::startredirection();
201: }
202: return $currentstring;
203: }
204:
205: sub end_head {
206: my ($target,$token) = @_;
207: my $currentstring = '';
208: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
209: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
210: # in case there is a </head> but no <head>
211: if ($Apache::lonxml::redirection) {
212: $Apache::londefdef::head = &Apache::lonxml::endredirection();
213: }
214: }
215: return $currentstring;
216: }
217:
218: #-- <map> tag (end tag required)
219: sub start_map {
220: my ($target,$token) = @_;
221: my $currentstring = '';
222: if ($target eq 'web' || $target eq 'webgrade') {
223: $currentstring = $token->[4];
224: }
225: return $currentstring;
226: }
227:
228: sub end_map {
229: my ($target,$token) = @_;
230: my $currentstring = '';
231: if ($target eq 'web' || $target eq 'webgrade') {
232: $currentstring = $token->[2];
233: }
234: return $currentstring;
235: }
236:
237: #-- <select> tag (end tag required)
238: sub start_select {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web' || $target eq 'webgrade') {
242: $currentstring = $token->[4];
243: } elsif ($target eq 'tex') {
244: $Apache::londefdef::select=0;
245: }
246: return $currentstring;
247: }
248:
249: sub end_select {
250: my ($target,$token) = @_;
251: my $currentstring = '';
252: if ($target eq 'web' || $target eq 'webgrade') {
253: $currentstring = $token->[2];
254: }
255: return $currentstring;
256: }
257:
258: #-- <option> tag (end tag optional)
259: sub start_option {
260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
261: my $currentstring = '';
262: if ($target eq 'web' || $target eq 'webgrade') {
263: $currentstring = $token->[4];
264: } elsif ($target eq 'tex') {
265: $Apache::londefdef::select++;
266: if ($Apache::londefdef::select == 1) {
267: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
268: } else {
269: $currentstring='\keephidden{';
270: }
271: }
272: return $currentstring;
273: }
274:
275: sub end_option {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: } elsif ($target eq 'tex') {
281: $currentstring='}';
282: }
283: return $currentstring;
284: }
285:
286: #-- <input> tag (end tag forbidden)
287: sub start_input {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web' || $target eq 'webgrade') {
291: $currentstring = $token->[4];
292: }
293: return $currentstring;
294: }
295:
296: sub end_input {
297: my ($target,$token) = @_;
298: my $currentstring = '';
299: if ($target eq 'web' || $target eq 'webgrade') {
300: $currentstring = $token->[2];
301: }
302: return $currentstring;
303: }
304:
305: #-- <textarea> tag (end tag required)
306: sub start_textarea {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web' || $target eq 'webgrade') {
310: $currentstring = $token->[4];
311: }
312: return $currentstring;
313: }
314:
315: sub end_textarea {
316: my ($target,$token) = @_;
317: my $currentstring = '';
318: if ($target eq 'web' || $target eq 'webgrade') {
319: $currentstring = $token->[2];
320: }
321: return $currentstring;
322: }
323:
324: #-- <form> tag (end tag required)
325: sub start_form {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_form {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <title> tag (end tag required)
344: sub start_title {
345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $Apache::londefdef::title =
349: &Apache::lonxml::get_all_text('/title',$parser,$style);
350: } elsif ($target eq 'tex') {
351: $currentstring .= '\keephidden{Title of the document: '
352: }
353: if ($target eq 'meta') {
354: $currentstring='<title>';
355: &start_output($target);
356: }
357: return $currentstring;
358: }
359:
360: sub end_title {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: # start_title takes care of swallowing the title
365: } elsif ($target eq 'tex') {
366: $currentstring .= '}';
367: }
368: if ($target eq 'meta') {
369: &end_output($target);
370: $currentstring='</title>';
371: }
372: return $currentstring;
373: }
374:
375: #-- <meta> tag (end tag forbidden)
376: sub start_meta {
377: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
378: my $currentstring = '';
379: if ($target eq 'web' || $target eq 'webgrade') {
380: my $args='';
381: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
382: if ($args eq '') {
383: &Apache::lonxml::get_all_text("/meta",$parser,$style);
384: } else {
385: $currentstring = $token->[4];
386: }
387: if ($env{'form.grade_imsexport'}) {
388: $currentstring = '';
389: }
390: } elsif ($target eq 'meta') {
391: unless (&Apache::lonxml::get_param
392: ('http-equiv',$parstack,$safeeval,undef,1)) {
393: my $name=$token->[2]->{'name'};
394: $name=~tr/A-Z/a-z/;
395: $name=~s/\s/\_/gs;
396: $name=~s/\W//gs;
397: if ($name) {
398: $currentstring='<'.$name;
399: my $display=&Apache::lonxml::get_param
400: ('display',$parstack,$safeeval,undef,1);
401: if ($display) {
402: $display=~s/\"/\'/g;
403: $currentstring.=' display="'.$display.'"';
404: }
405: $currentstring.='>'.
406: &Apache::lonxml::get_param
407: ('content',$parstack,$safeeval,undef,1).
408: '</'.$name.'>';
409: }
410: my $display=&Apache::lonxml::get_param
411: ('display',$parstack,$safeeval,undef,1);
412: if ($display) {
413: $display=&HTML::Entities::encode($display,'<>&"');
414: $currentstring.='<'.$name.'.display>'.$display.
415: '</'.$name.'.display>';
416: }
417: }
418: } elsif ($target eq 'tex') {
419: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
420: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
421: if ((not defined $content) && (not defined $name)) {
422: &Apache::lonxml::startredirection();
423: }
424: } elsif ($target eq 'edit') {
425: $currentstring .= &Apache::edit::tag_start($target,$token);
426: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
427: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
428: $currentstring .= &Apache::edit::end_row();
429: } elsif ($target eq 'modified') {
430: my $constructtag =
431: &Apache::edit::get_new_args($token,$parstack,$safeeval,
432: 'name','content');
433: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
434: }
435: return $currentstring;
436: }
437:
438: sub end_meta {
439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
440: my $currentstring = '';
441: if ($target eq 'web' || $target eq 'webgrade') {
442: my $args='';
443: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
444: if ($args ne '') {
445: $currentstring = $token->[4];
446: }
447: } elsif ($target eq 'tex') {
448: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
449: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
450: if ((not defined $content) && (not defined $name)) {
451: &Apache::lonxml::endredirection();
452: }
453: }
454: return $currentstring;
455: }
456:
457: sub insert_meta {
458: return '
459: <meta />';
460: }
461:
462: # accessrule
463: sub start_accessrule {
464: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
465: my $currentstring = '';
466: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
467: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
468: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
469: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
470:
471: my ($dom,$crs,$sec,$separator);
472: if ($type eq 'user') {
473: ($dom,$crs,$sec)=split(m{/},$realm);
474: $crs = &LONCAPA::clean_username($crs);
475: $separator = '/';
476: } else {
477: ($dom,$crs,$sec)=split(/\_/,$realm);
478: $crs = &LONCAPA::clean_courseid($crs);
479: $separator = '_';
480: }
481: $dom = &LONCAPA::clean_domain($dom);
482:
483: $sec =~s/\W//;
484: $realm = $dom;
485: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
486: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
487: $role=~s/\W//g;
488:
489: if ($target eq 'web') {
490: my $args='';
491: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
492: if ($args eq '') {
493: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
494: } else {
495: $currentstring = $token->[4];
496: }
497: }
498: if ($target eq 'meta') {
499: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
500: }
501: return $currentstring;
502: }
503:
504: sub end_accessrule {
505: my ($target,$token,$tagstack,$parstack,$parser) = @_;
506: my $currentstring = '';
507: if ($target eq 'web') {
508: my $args='';
509: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
510: if ($args ne '') {
511: $currentstring = $token->[4];
512: }
513: }
514: return $currentstring;
515: }
516:
517: sub generate_css_links {
518: my $links;
519: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
520: if ($css_href =~ /\S/) {
521: &Apache::lonxml::extlink($css_href);
522: $links .=
523: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
524: }
525: return $links;
526: }
527:
528: #-- <body> tag (end tag required)
529: sub start_body {
530: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
531: my $currentstring = '';
532:
533: if ($target eq 'web' || $target eq 'webgrade') {
534: if ($Apache::lonhomework::parsing_a_problem) {
535: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
536: return '';
537: }
538:
539: if (&is_inside_of($tagstack, "head")) {
540: &end_head(@_);
541: }
542:
543: my $extra_head = &generate_css_links();
544:
545: # Breadcrumbs
546: &Apache::lonhtmlcommon::clear_breadcrumbs();
547: if ($env{'request.state'} eq 'construct') {
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'Construction Space',
550: 'href' => &Apache::loncommon::authorspace(),
551: });
552: &Apache::lonhtmlcommon::add_breadcrumb({
553: 'text' => 'HTML Editor',
554: 'href' => '',
555: });
556: # breadcrumbs (and tools) will be created
557: # in start_page->bodytag->innerregister
558: } else {
559: # FIXME Where are we?
560: }
561:
562: $currentstring =
563: &Apache::loncommon::start_page($Apache::londefdef::title,
564: $Apache::londefdef::head
565: .$extra_head,
566: {'add_entries' => $token->[2],
567: # 'no_title' => 1,
568: 'force_register' => 1});
569:
570: my $header = '';
571: if ($env{'request.state'} ne 'published' &&
572: $env{'request.state'} ne 'construct') {
573: $header=&Apache::lonmenu::constspaceform();
574: }
575: if ($env{'request.state'} ne 'published') {
576: $header.=&Apache::londefdef::edit_controls();
577: }
578: if ($env{'request.state'} eq 'construct') {
579: $currentstring.=&Apache::loncommon::head_subbox(
580: &Apache::loncommon::CSTR_pageheader()
581: .$header);
582: } elsif ($env{'request.state'} eq 'edit') {
583: $currentstring.=&Apache::loncommon::head_subbox($header);
584: }
585: $currentstring.=&Apache::lonxml::message_location();
586: } elsif ($target eq 'tex') {
587: $currentstring = ''; # '\begin{document}' is in header.
588: }
589:
590: return $currentstring;
591: }
592:
593: sub edit_controls {
594: my ($nochgview) = @_;
595: my $result .= '
596: <form method="post" action="">
597: <div class="LC_edit_problem_header">';
598: unless ($nochgview) {
599: $result .= '
600: <div class="LC_edit_problem_header_row1">'.
601: &Apache::lonxml::renderingoptions().'
602: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
603: </div>';
604: }
605: $result .= '
606: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
607: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
608: my $viewtext = &mt('Course View');
609: if (&Apache::loncommon::course_type() eq 'Community') {
610: $viewtext = &mt('Community View');
611: }
612: $result .= (' ' x 3).'<input type="button" value="'.
613: $viewtext.'" onclick="javascript:location.href=currentURL" />';
614: }
615: $result .= '</div>
616: </div>
617: </form>
618: ';
619: return $result;
620: }
621:
622: sub end_body {
623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
624: my $currentstring = &end_p(); # Close off unclosed <p>
625: if ($target eq 'web' || $target eq 'webgrade') {
626: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
627: } elsif ($target eq 'tex') {
628: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
629: }
630: return $currentstring;
631: }
632:
633: # \begin{center} causes a new paragprah spacing that looks odd inside
634: # of a table cell. Same at the end of a \center but with a slightly
635: # larger space .. hence center_correction and center_end_correction.
636: #
637: sub center_correction { return '\vspace*{-6 mm}'; }
638: sub center_end_correction { return '\vspace*{-7 mm}'; }
639:
640: #-- <center> tag (end tag required)
641: sub start_center {
642: my ($target,$token,$tagstack) = @_;
643: my $currentstring = &end_p(); # Close off any prior para.
644: if ($target eq 'web' || $target eq 'webgrade') {
645: $currentstring .= $token->[4];
646: } elsif ($target eq 'tex') {
647: if (&is_inside_of($tagstack, "table")) {
648: $currentstring .= ¢er_correction();
649: }
650: $currentstring .= '\begin{center}';
651: }
652: return $currentstring;
653: }
654:
655: sub end_center {
656: my ($target,$token,$tagstack) = @_;
657: my $currentstring = '';
658: if ($target eq 'web' || $target eq 'webgrade') {
659: $currentstring = $token->[2];
660: } elsif ($target eq 'tex') {
661: $currentstring = '\end{center}';
662: if (&is_inside_of($tagstack, "table")) {
663: $currentstring .= ¢er_end_correction();
664: }
665: }
666: return $currentstring;
667: }
668:
669: #-- <b> tag (end tag required)
670: # NOTE: In TeX mode disables internal <p>
671: sub start_b {
672: my ($target,$token) = @_;
673: my $currentstring = '';
674: if ($target eq 'web' || $target eq 'webgrade') {
675: $currentstring = $token->[4];
676: } elsif ($target eq 'tex') {
677: &disable_para();
678: $currentstring .= '\textbf{';
679: }
680: return $currentstring;
681: }
682:
683: sub end_b {
684: my ($target,$token) = @_;
685: my $currentstring = '';
686: if ($target eq 'web' || $target eq 'webgrade') {
687: $currentstring = $token->[2];
688: } elsif ($target eq 'tex') {
689: &enable_para();
690: $currentstring = '}';
691: }
692: return $currentstring;
693: }
694:
695: #-- <strong> tag (end tag required)
696: # NOTE: in TeX mode disables internal <p>
697: sub start_strong {
698: my ($target,$token) = @_;
699: my $currentstring = '';
700: if ($target eq 'web' || $target eq 'webgrade') {
701: $currentstring = $token->[4];
702: } elsif ($target eq 'tex') {
703: &disable_para();
704: $currentstring = '\textbf{';
705: }
706: return $currentstring;
707: }
708:
709: sub end_strong {
710: my ($target,$token) = @_;
711: my $currentstring = '';
712: if ($target eq 'web' || $target eq 'webgrade') {
713: $currentstring = $token->[2];
714: } elsif ($target eq 'tex') {
715: &enable_para();
716: $currentstring = '}';
717: }
718: return $currentstring;
719: }
720:
721: #-- <h1> tag (end tag required)
722: sub start_h1 {
723: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
724: my $currentstring = &end_p(); # Close off any prior para.
725: if ($target eq 'web' || $target eq 'webgrade') {
726: $currentstring .= $token->[4];
727: } elsif ($target eq 'tex') {
728: my $pre;
729: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
730: if ($align eq 'center') {
731: $pre='\begin{center}';
732: } elsif ($align eq 'left') {
733: $pre='\rlap{';
734: } elsif ($align eq 'right') {
735: $pre=' \hfill \llap{';
736: }
737: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
738: if (not defined $TeXsize) {$TeXsize="large";}
739: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
740: } elsif ($target eq 'meta') {
741: $currentstring.='<subject>';
742: &start_output($target);
743: }
744: return $currentstring;
745: }
746:
747: sub end_h1 {
748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
749: my $currentstring = '';
750: if ($target eq 'web' || $target eq 'webgrade') {
751: $currentstring .= $token->[2];
752: } elsif ($target eq 'tex') {
753: my $post='\vskip 0 mm ';
754: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
755: if ($align eq 'center') {
756: $post='\end{center}';
757: } elsif ($align eq 'left') {
758: $post='} \hfill'.'\vskip 0 mm ';
759: } elsif ($align eq 'right') {
760: $post='}'.'\vskip 0 mm ';
761: }
762: $currentstring .= '}}'.$post;
763: } elsif ($target eq 'meta') {
764: &end_output($target);
765: $currentstring='</subject>';
766: }
767: return $currentstring;
768: }
769:
770: #-- <h2> tag
771: sub start_h2 {
772: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
773: my $currentstring = &end_p(); # Close off any prior para.
774: if ($target eq 'web' || $target eq 'webgrade') {
775: $currentstring .= $token->[4];
776: } elsif ($target eq 'tex') {
777: my $pre;
778: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
779: if ($align eq 'center') {
780: $pre='\begin{center}';
781: } elsif ($align eq 'left') {
782: $pre='\rlap{';
783: } elsif ($align eq 'right') {
784: $pre=' \hfill \llap{';
785: }
786: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
787: if (not defined $TeXsize) {$TeXsize="large";}
788: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
789: }
790: return $currentstring;
791: }
792:
793: sub end_h2 {
794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
795: my $currentstring = '';
796: if ($target eq 'web' || $target eq 'webgrade') {
797: $currentstring .= $token->[2];
798: } elsif ($target eq 'tex') {
799: my $post='\vskip 0 mm ';
800: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
801: if ($align eq 'center') {
802: $post='\end{center}';
803: } elsif ($align eq 'left') {
804: $post='} \hfill'.'\vskip 0 mm ';
805: } elsif ($align eq 'right') {
806: $post='}'.'\vskip 0 mm ';
807: }
808: $currentstring .= '}}'.$post;
809: }
810: return $currentstring;
811: }
812:
813: #-- <h3> tag
814: sub start_h3 {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
816: my $currentstring = &end_p(); # Close off any prior para.
817: if ($target eq 'web' || $target eq 'webgrade') {
818: $currentstring .= $token->[4];
819: } elsif ($target eq 'tex') {
820: my $pre;
821: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
822: if ($align eq 'center') {
823: $pre='\begin{center}';
824: } elsif ($align eq 'left') {
825: $pre='\rlap{';
826: } elsif ($align eq 'right') {
827: $pre=' \hfill \llap{';
828: }
829: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
830: if (not defined $TeXsize) {$TeXsize="large";}
831: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
832: }
833: return $currentstring;
834: }
835:
836: sub end_h3 {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
838: my $currentstring = '';
839: if ($target eq 'web' || $target eq 'webgrade') {
840: $currentstring .= $token->[2];
841: } elsif ($target eq 'tex') {
842: my $post='\vskip 0 mm ';
843: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
844: if ($align eq 'center') {
845: $post='\end{center}';
846: } elsif ($align eq 'left') {
847: $post='} \hfill'.'\vskip 0 mm ';
848: } elsif ($align eq 'right') {
849: $post='}'.'\vskip 0 mm ';
850: }
851: $currentstring .= '}}'.$post;
852: }
853: return $currentstring;
854: }
855:
856: #-- <h4> tag
857: sub start_h4 {
858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
859: my $currentstring = &end_p(); # Close off any prior para.
860: if ($target eq 'web' || $target eq 'webgrade') {
861: $currentstring .= $token->[4];
862: } elsif ($target eq 'tex') {
863: my $pre;
864: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
865: if ($align eq 'center') {
866: $pre='\begin{center}';
867: } elsif ($align eq 'left') {
868: $pre='\rlap{';
869: } elsif ($align eq 'right') {
870: $pre=' \hfill \llap{';
871: }
872: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
873: if (not defined $TeXsize) {$TeXsize="large";}
874: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
875: }
876: return $currentstring;
877: }
878:
879: sub end_h4 {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
881: my $currentstring = '';
882: if ($target eq 'web' || $target eq 'webgrade') {
883: $currentstring .= $token->[2];
884: } elsif ($target eq 'tex') {
885: my $post='\vskip 0 mm ';
886: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
887: if ($align eq 'center') {
888: $post='\end{center}';
889: } elsif ($align eq 'left') {
890: $post='} \hfill'.'\vskip 0 mm ';
891: } elsif ($align eq 'right') {
892: $post='}'.'\vskip 0 mm ';
893: }
894: $currentstring .= '}}'.$post;
895: }
896: return $currentstring;
897: }
898:
899: #-- <h5> tag
900: sub start_h5 {
901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
902: my $currentstring = &end_p(); # Close off any prior paras.
903: if ($target eq 'web' || $target eq 'webgrade') {
904: $currentstring .= $token->[4];
905: } elsif ($target eq 'tex') {
906: my $pre;
907: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
908: if ($align eq 'center') {
909: $pre='\begin{center}';
910: } elsif ($align eq 'left') {
911: $pre='\rlap{';
912: } elsif ($align eq 'right') {
913: $pre=' \hfill \llap{';
914: }
915: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
916: if (not defined $TeXsize) {$TeXsize="large";}
917: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_h5 {
923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
924: my $currentstring = '';
925: if ($target eq 'web' || $target eq 'webgrade') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: my $post='\vskip 0 mm ';
929: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
930: if ($align eq 'center') {
931: $post='\end{center}';
932: } elsif ($align eq 'left') {
933: $post='} \hfill'.'\vskip 0 mm ';
934: } elsif ($align eq 'right') {
935: $post='}'.'\vskip 0 mm ';
936: }
937: $currentstring .= '}}'.$post;
938: }
939: return $currentstring;
940: }
941:
942: #-- <h6> tag
943: sub start_h6 {
944: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
945: my $currentstring = &end_p(); # Close off any prior paras.
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: my $pre;
950: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
951: if ($align eq 'center') {
952: $pre='\begin{center}';
953: } elsif ($align eq 'left') {
954: $pre='\rlap{';
955: } elsif ($align eq 'right') {
956: $pre=' \hfill \llap{';
957: }
958: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
959: if (not defined $TeXsize) {$TeXsize="large";}
960: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
961: }
962: return $currentstring;
963: }
964:
965: sub end_h6 {
966: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
967: my $currentstring = '';
968: if ($target eq 'web' || $target eq 'webgrade') {
969: $currentstring .= $token->[2];
970: } elsif ($target eq 'tex') {
971: my $post='\vskip 0 mm ';
972: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
973: if ($align eq 'center') {
974: $post='\end{center}';
975: } elsif ($align eq 'left') {
976: $post='} \hfill'.'\vskip 0 mm ';
977: } elsif ($align eq 'right') {
978: $post='}'.'\vskip 0 mm ';
979: }
980: $currentstring .= '}}'.$post;
981: }
982: return $currentstring;
983: }
984:
985: #--- <cite> tag (end tag required)
986: sub start_cite {
987: my ($target,$token) = @_;
988: my $currentstring = '';
989: if ($target eq 'web' || $target eq 'webgrade') {
990: $currentstring .= $token->[4];
991: } elsif ($target eq 'tex') {
992: $currentstring .= '\textit{';
993: }
994: return $currentstring;
995: }
996:
997: sub end_cite {
998: my ($target,$token) = @_;
999: my $currentstring = '';
1000: if ($target eq 'web' || $target eq 'webgrade') {
1001: $currentstring .= $token->[2];
1002: } elsif ($target eq 'tex') {
1003: $currentstring .= '}';
1004: }
1005: return $currentstring;
1006: }
1007:
1008: #-- <i> tag (end tag required)
1009: sub start_i {
1010: my ($target,$token) = @_;
1011: my $currentstring = '';
1012: if ($target eq 'web' || $target eq 'webgrade') {
1013: $currentstring .= $token->[4];
1014: } elsif ($target eq 'tex') {
1015: $currentstring .= '\textit{';
1016: }
1017: return $currentstring;
1018: }
1019:
1020: sub end_i {
1021: my ($target,$token) = @_;
1022: my $currentstring = '';
1023: if ($target eq 'web' || $target eq 'webgrade') {
1024: $currentstring .= $token->[2];
1025: } elsif ($target eq 'tex') {
1026: $currentstring .= '}';
1027: }
1028: return $currentstring;
1029: }
1030:
1031: #-- <address> tag (end tag required)
1032: sub start_address {
1033: my ($target,$token) = @_;
1034: my $currentstring = '';
1035: if ($target eq 'web' || $target eq 'webgrade') {
1036: $currentstring .= $token->[4];
1037: } elsif ($target eq 'tex') {
1038: $currentstring .= '\textit{';
1039: }
1040: return $currentstring;
1041: }
1042:
1043: sub end_address {
1044: my ($target,$token) = @_;
1045: my $currentstring = '';
1046: if ($target eq 'web' || $target eq 'webgrade') {
1047: $currentstring .= $token->[2];
1048: } elsif ($target eq 'tex') {
1049: $currentstring .= '}';
1050: }
1051: return $currentstring;
1052: }
1053:
1054: #-- <dfn> tag (end tag required)
1055: sub start_dfn {
1056: my ($target,$token) = @_;
1057: my $currentstring = '';
1058: if ($target eq 'web' || $target eq 'webgrade') {
1059: $currentstring .= $token->[4];
1060: } elsif ($target eq 'tex') {
1061: $currentstring .= '\textit{';
1062: }
1063: return $currentstring;
1064: }
1065:
1066: sub end_dfn {
1067: my ($target,$token) = @_;
1068: my $currentstring = '';
1069: if ($target eq 'web' || $target eq 'webgrade') {
1070: $currentstring .= $token->[2];
1071: } elsif ($target eq 'tex') {
1072: $currentstring .= '}';
1073: }
1074: return $currentstring;
1075: }
1076:
1077: #-- <tt> tag (end tag required)
1078: sub start_tt {
1079: my ($target,$token) = @_;
1080: my $currentstring = '';
1081: if ($target eq 'web' || $target eq 'webgrade') {
1082: $currentstring .= $token->[4];
1083: } elsif ($target eq 'tex') {
1084: $currentstring .= '\texttt{';
1085: }
1086: return $currentstring;
1087: }
1088:
1089: sub end_tt {
1090: my ($target,$token) = @_;
1091: my $currentstring = '';
1092: if ($target eq 'web' || $target eq 'webgrade') {
1093: $currentstring .= $token->[2];
1094: } elsif ($target eq 'tex') {
1095: $currentstring .= '}';
1096: }
1097: return $currentstring;
1098: }
1099:
1100: #-- <kbd> tag (end tag required)
1101: sub start_kbd {
1102: my ($target,$token) = @_;
1103: my $currentstring = '';
1104: if ($target eq 'web' || $target eq 'webgrade') {
1105: $currentstring .= $token->[4];
1106: } elsif ($target eq 'tex') {
1107: $currentstring .= '\texttt{';
1108: }
1109: return $currentstring;
1110: }
1111:
1112: sub end_kbd {
1113: my ($target,$token) = @_;
1114: my $currentstring = '';
1115: if ($target eq 'web' || $target eq 'webgrade') {
1116: $currentstring .= $token->[2];
1117: } elsif ($target eq 'tex') {
1118: $currentstring .= '}';
1119: }
1120: return $currentstring;
1121: }
1122:
1123: #-- <code> tag (end tag required)
1124: sub start_code {
1125: my ($target,$token) = @_;
1126: my $currentstring = '';
1127: if ($target eq 'web' || $target eq 'webgrade') {
1128: $currentstring .= $token->[4];
1129: } elsif ($target eq 'tex') {
1130: $currentstring .= '\texttt{';
1131: }
1132: return $currentstring;
1133: }
1134:
1135: sub end_code {
1136: my ($target,$token) = @_;
1137: my $currentstring = '';
1138: if ($target eq 'web' || $target eq 'webgrade') {
1139: $currentstring .= $token->[2];
1140: } elsif ($target eq 'tex') {
1141: $currentstring .= '}';
1142: }
1143: return $currentstring;
1144: }
1145:
1146: #-- <em> tag (end tag required)
1147: sub start_em {
1148: my ($target,$token) = @_;
1149: my $currentstring = '';
1150: if ($target eq 'web' || $target eq 'webgrade') {
1151: $currentstring .= $token->[4];
1152: } elsif ($target eq 'tex') {
1153: $currentstring .= '\emph{';
1154: }
1155: return $currentstring;
1156: }
1157:
1158: sub end_em {
1159: my ($target,$token) = @_;
1160: my $currentstring = '';
1161: if ($target eq 'web' || $target eq 'webgrade') {
1162: $currentstring .= $token->[2];
1163: } elsif ($target eq 'tex') {
1164: $currentstring .= '}';
1165: }
1166: return $currentstring;
1167: }
1168:
1169: #-- <q> tag (end tag required)
1170: sub start_q {
1171: my ($target,$token) = @_;
1172: my $currentstring = '';
1173: if ($target eq 'web' || $target eq 'webgrade') {
1174: $currentstring .= $token->[4];
1175: } elsif ($target eq 'tex') {
1176: $currentstring .= '\emph{';
1177: }
1178: return $currentstring;
1179: }
1180:
1181: sub end_q {
1182: my ($target,$token) = @_;
1183: my $currentstring = '';
1184: if ($target eq 'web' || $target eq 'webgrade') {
1185: $currentstring .= $token->[2];
1186: } elsif ($target eq 'tex') {
1187: $currentstring .= '}';
1188: }
1189: return $currentstring;
1190: }
1191:
1192: # <p> is a bit strange since it does not require a closing </p>
1193: # However in latex, we must often output closing stuff to end
1194: # environments and {}'s etc. Therefore we do all the work
1195: # of figuring out the ending strings in the start tag processing,
1196: # and provide a mechanism to output the stop text external
1197: # to tag processing.
1198: #
1199: {
1200:
1201: my $closing_string = ''; # String required to close <p>
1202:
1203: # Some tags are <p> fragile meaning that <p> inside of them
1204: # does not work within TeX mode. This is managed via the
1205: # counter below:
1206: #
1207:
1208: my $para_disabled = 0;
1209:
1210: sub disable_para {
1211: $para_disabled++;
1212: }
1213: sub enable_para {
1214: $para_disabled--;
1215: }
1216:
1217:
1218: #-- <p> tag (end tag optional)
1219: #optional attribute - align="center|left|right"
1220: sub start_p {
1221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1222: my $currentstring = '';
1223: if ($target eq 'web' || $target eq 'webgrade') {
1224: $currentstring .= &end_p(); # close off prior para if in progress.
1225: $currentstring .= $token->[4];
1226: if (! ($currentstring =~ /\//)) {
1227: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1228: }
1229: } elsif ($target eq 'tex' && !$para_disabled) {
1230:
1231: $currentstring .= &end_p(); # close off prior para if in progress.
1232: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1233: if ($align eq 'center') {
1234: $currentstring .='\begin{center}\par ';
1235: $closing_string = '\end{center}';
1236: if (&is_inside_of($tagstack, "table")) {
1237: $currentstring = ¢er_correction().$currentstring;
1238: }
1239: } elsif ($align eq 'right') {
1240: $currentstring.="\n".'{\flushright ';
1241: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1242: $closing_string= "}\n";
1243: } elsif ($align eq 'left') {
1244: $currentstring.= "\n".'{\flushleft ';
1245: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1246: $closing_string = "}\n";
1247: } else {
1248: $currentstring.='\par ';
1249: if (&is_inside_of($tagstack, 'table')) {
1250: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1251: } else {
1252: $closing_string = '\strut\\\\\strut ';
1253: }
1254: }
1255:
1256: }
1257: return $currentstring;
1258: }
1259: #
1260: # End paragraph processing just requires that we output the
1261: # closing string that was saved and blank it.
1262: sub end_p {
1263: # Note only 'tex' mode uses disable_para and enable_para
1264: # so we don't need to know the target in the check below:
1265:
1266: if (!$para_disabled) {
1267: my $current_string = $closing_string;
1268: $closing_string = ''; # Not in a para anymore.
1269: return $current_string;
1270: } else {
1271: return '';
1272: }
1273:
1274: }
1275: }
1276: #-- <br> tag (end tag forbidden)
1277: sub start_br {
1278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1279: my $currentstring = '';
1280: if ($target eq 'web' || $target eq 'webgrade') {
1281: $currentstring .= $token->[4];
1282: } elsif ($target eq 'tex') {
1283: my @tempo=@$tagstack;
1284: my $signal=0;
1285: # Not going to factor this to is_inside_of since that would require
1286: # multiple stack traversals.
1287: #
1288: for (my $i=$#tempo;$i>=0;$i--) {
1289: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1290: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1291: $signal=1;
1292: }
1293: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1294: $signal = 1;
1295: }
1296: }
1297: if ($signal != 1) {
1298: $currentstring .= '\strut \\\\ \strut ';
1299: }
1300:
1301: }
1302: return $currentstring;
1303: }
1304:
1305: sub end_br {
1306: my ($target,$token) = @_;
1307: my $currentstring = '';
1308: if ($target eq 'web' || $target eq 'webgrade') {
1309: $currentstring .= $token->[2];
1310: }
1311: return $currentstring;
1312: }
1313:
1314: #-- <big> tag (end tag required)
1315: sub start_big {
1316: my ($target,$token) = @_;
1317: my $currentstring = '';
1318: if ($target eq 'web' || $target eq 'webgrade') {
1319: $currentstring .= $token->[4];
1320: } elsif ($target eq 'tex') {
1321: $currentstring .= '{\large ';
1322: }
1323: return $currentstring;
1324: }
1325:
1326: sub end_big {
1327: my ($target,$token) = @_;
1328: my $currentstring = '';
1329: if ($target eq 'web' || $target eq 'webgrade') {
1330: $currentstring .= $token->[2];
1331: } elsif ($target eq 'tex') {
1332: $currentstring .= '}';
1333: }
1334: return $currentstring;
1335: }
1336:
1337: #-- <small> tag (end tag required)
1338: sub start_small {
1339: my ($target,$token) = @_;
1340: my $currentstring = '';
1341: if ($target eq 'web' || $target eq 'webgrade') {
1342: $currentstring .= $token->[4];
1343: } elsif ($target eq 'tex') {
1344: $currentstring .= '{\footnotesize ';
1345: }
1346: return $currentstring;
1347: }
1348:
1349: sub end_small {
1350: my ($target,$token) = @_;
1351: my $currentstring = '';
1352: if ($target eq 'web' || $target eq 'webgrade') {
1353: $currentstring .= $token->[2];
1354: } elsif ($target eq 'tex') {
1355: $currentstring .= '}';
1356: }
1357: return $currentstring;
1358: }
1359:
1360: #-- <basefont> tag (end tag forbidden)
1361: sub start_basefont {
1362: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1363: my $currentstring = '';
1364: if ($target eq 'web' || $target eq 'webgrade') {
1365: $currentstring = $token->[4];
1366: } elsif ($target eq 'tex') {
1367: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1368: if (defined $basesize) {
1369: $currentstring = '{\\'.$basesize.' ';
1370: }
1371: }
1372: return $currentstring;
1373: }
1374:
1375: sub end_basefont {
1376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1377: my $currentstring = '';
1378: if ($target eq 'web' || $target eq 'webgrade') {
1379: $currentstring = $token->[4];
1380: } elsif ($target eq 'tex') {
1381: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1382: if (defined $basesize) {
1383: $currentstring = '}';
1384: }
1385: }
1386: return $currentstring;
1387: }
1388:
1389: #-- <font> tag (end tag required)
1390: sub start_font {
1391: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1392: my $currentstring = '';
1393: if ($target eq 'web' || $target eq 'webgrade') {
1394: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1395: $currentstring = $token->[4];
1396: } elsif ($target eq 'tex') {
1397: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1398: if (defined $fontsize) {
1399: $currentstring = '{\\'.$fontsize.' ';
1400: }
1401: }
1402: return $currentstring;
1403: }
1404:
1405: sub end_font {
1406: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1407: my $currentstring = '';
1408: if ($target eq 'web' || $target eq 'webgrade') {
1409: $currentstring = $token->[2];
1410: } elsif ($target eq 'tex') {
1411: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1412: if (defined $fontsize) {
1413: $currentstring = '}';
1414: }
1415: }
1416: return $currentstring;
1417: }
1418:
1419: #-- <strike> tag (end tag required)
1420: sub start_strike {
1421: my ($target,$token) = @_;
1422: my $currentstring = '';
1423: if ($target eq 'web' || $target eq 'webgrade') {
1424: $currentstring .= $token->[4];
1425: } elsif ($target eq 'tex') {
1426: &Apache::lonxml::startredirection();
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_strike {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web' || $target eq 'webgrade') {
1435: $currentstring .= $token->[2];
1436: } elsif ($target eq 'tex') {
1437: $currentstring=&Apache::lonxml::endredirection();
1438: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1439: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1440: $currentstring=~s/(\S)\s*$/$1\}/;
1441: }
1442: return $currentstring;
1443: }
1444:
1445: #-- <s> tag (end tag required)
1446: sub start_s {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web' || $target eq 'webgrade') {
1450: $currentstring .= $token->[4];
1451: } elsif ($target eq 'tex') {
1452: &Apache::lonxml::startredirection();
1453: }
1454: return $currentstring;
1455: }
1456:
1457: sub end_s {
1458: my ($target,$token) = @_;
1459: my $currentstring = '';
1460: if ($target eq 'web' || $target eq 'webgrade') {
1461: $currentstring .= $token->[2];
1462: } elsif ($target eq 'tex') {
1463: $currentstring=&Apache::lonxml::endredirection();
1464: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1465: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1466: $currentstring=~s/(\S)\s*$/$1\}/;
1467: }
1468: return $currentstring;
1469: }
1470:
1471: #-- <sub> tag (end tag required)
1472: sub start_sub {
1473: my ($target,$token) = @_;
1474: my $currentstring = '';
1475: if ($target eq 'web' || $target eq 'webgrade') {
1476: $currentstring .= $token->[4];
1477: } elsif ($target eq 'tex') {
1478: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_sub {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web' || $target eq 'webgrade') {
1487: $currentstring .= $token->[2];
1488: } elsif ($target eq 'tex') {
1489: $currentstring .= '}}';
1490: }
1491: return $currentstring;
1492: }
1493:
1494: #-- <sup> tag (end tag required)
1495: sub start_sup {
1496: my ($target,$token) = @_;
1497: my $currentstring = '';
1498: if ($target eq 'web' || $target eq 'webgrade') {
1499: $currentstring .= $token->[4];
1500: } elsif ($target eq 'tex') {
1501: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1502: }
1503: return $currentstring;
1504: }
1505:
1506: sub end_sup {
1507: my ($target,$token) = @_;
1508: my $currentstring = '';
1509: if ($target eq 'web' || $target eq 'webgrade') {
1510: $currentstring .= $token->[2];
1511: } elsif ($target eq 'tex') {
1512: $currentstring .= '}}';
1513: }
1514: return $currentstring;
1515: }
1516:
1517: #-- <hr> tag (end tag forbidden)
1518: sub start_hr {
1519: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1520: my $currentstring = &end_p(); # End enclosing para.
1521: if ($target eq 'web' || $target eq 'webgrade') {
1522: $currentstring .= $token->[4];
1523: } elsif ($target eq 'tex') {
1524:
1525: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1526: #
1527: my $restart_sub = 0;
1528: my $restart_sup = 0;
1529:
1530: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1531: # using the start_ stop_ functions.. those tags only care about
1532: # $target.
1533:
1534: if (&is_inside_of($tagstack, "sub")) {
1535: $restart_sub = 1;
1536: $currentstring .= &end_sub($target, $token, $tagstack,
1537: $parstack, $parser, $safeeval);
1538: }
1539: if (&is_inside_of($tagstack, "sup")) {
1540: $restart_sup = 1;
1541: $currentstring .= &end_sup($target, $token, $tagstack,
1542: $parstack, $parser, $safeeval);
1543: }
1544:
1545: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1546: if (defined $LaTeXwidth) {
1547: if ($LaTeXwidth=~/^%/) {
1548: substr($LaTeXwidth,0,1)='';
1549: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1550: }
1551: } else {
1552: $LaTeXwidth ='0.9\textwidth';
1553: }
1554: my ($pre,$post);
1555: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1556: if (($align eq 'center') || (not defined $align)) {
1557: $pre=''; $post='';
1558: } elsif ($align eq 'left') {
1559: $pre='\rlap{'; $post='} \hfill';
1560: } elsif ($align eq 'right') {
1561: $pre=' \hfill \llap{'; $post='}';
1562: }
1563: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1564: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1565: # Turn stuff back on that we can't be inside of.
1566:
1567: if ($restart_sub) {
1568: $currentstring .= &start_sub($target, $token, $tagstack,
1569: $parstack, $parser, $safeeval);
1570: }
1571: if ($restart_sup) {
1572: $currentstring .= &start_sup($target, $token, $tagstack,
1573: $parstack, $parser, $safeeval);
1574: }
1575: }
1576: return $currentstring;
1577: }
1578:
1579: sub end_hr {
1580: my ($target,$token) = @_;
1581: my $currentstring = '';
1582: if ($target eq 'web' || $target eq 'webgrade') {
1583: $currentstring .= $token->[2];
1584: }
1585: return $currentstring;
1586: }
1587:
1588: #-- <div> tag (end tag required)
1589: {
1590:
1591: # Since div can be nested, the stack below is used
1592: # in 'tex' mode to store the ending strings
1593: # for the div stack.
1594:
1595: my @div_end_stack;
1596:
1597: sub start_div {
1598: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1599: my $currentstring = &end_p(); # Close enclosing para.
1600: if ($target eq 'web' || $target eq 'webgrade') {
1601: $currentstring .= $token->[4];
1602: }
1603: if ($target eq 'tex') {
1604: # 4 possible alignments: left, right, center, and -missing-.
1605: # If inside a table row, we must let the table logic
1606: # do the alignment, however.
1607: #
1608:
1609: my $endstring = '';
1610:
1611: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1612: $safeeval, undef, 1));
1613: if ($align eq 'center') {
1614: $currentstring .= '\begin{center}';
1615: $endstring = '\end{center}';
1616: if (&is_inside_of($tagstack, "table")) {
1617: $currentstring = ¢er_correction().$currentstring;
1618: $endstring .= ¢er_end_correction();
1619: }
1620: }
1621: elsif ($align eq 'right') {
1622: $currentstring .= '\begin{flushright}';
1623: $endstring .= '\end{flushright}';
1624: } elsif ($align eq 'left') {
1625: $currentstring .= '\begin{flushleft}';
1626: $endstring = '\end{flushleft}';
1627: } else {
1628:
1629: }
1630: $currentstring .= "\n"; # For human readability.
1631: $endstring = "\n$endstring\n"; # For human readability
1632: push(@div_end_stack, $endstring);
1633: }
1634: return $currentstring;
1635: }
1636:
1637: sub end_div {
1638: my ($target,$token) = @_;
1639: my $currentstring = '';
1640: if ($target eq 'web' || $target eq 'webgrade') {
1641: $currentstring .= $token->[2];
1642: }
1643: if ($target eq 'tex') {
1644: my $endstring = pop @div_end_stack;
1645: $currentstring .= $endstring;
1646: }
1647: return $currentstring;
1648: }
1649: }
1650:
1651: #-- <a> tag (end tag required)
1652: sub start_a {
1653: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1654: my $currentstring = '';
1655: if ($target eq 'web' || $target eq 'webgrade') {
1656: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1657: undef,1);
1658: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1659: if ($href =~ /\S/) {
1660: if ($href !~ m{^https?://}) {
1661: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1662: my $linkurl;
1663: if ($href =~ m{^/uploaded/}) {
1664: $linkurl = $href;
1665: } elsif ($href =~ m{^[^/]}) {
1666: my $path = $url;
1667: $path =~ s{[^/]*$}{};
1668: $linkurl = $path.$href;
1669: }
1670: if ($linkurl =~ m{^/uploaded/}) {
1671: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1672: if (&Apache::lonnet::is_on_map($url)) {
1673: &Apache::lonxml::extlink($linkurl);
1674: }
1675: }
1676: }
1677: }
1678: }
1679: }
1680: return $currentstring;
1681: }
1682:
1683: sub end_a {
1684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1685: my $currentstring = '';
1686: if ($target eq 'web' || $target eq 'webgrade') {
1687: $currentstring .= $token->[2];
1688: }
1689: if ($target eq 'tex') {
1690: my $href =
1691: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1692: my $name =
1693: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1694: my $uriprint =
1695: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1696: my $anchorprint =
1697: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1698: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1699: $href =~ s/([^\\])%/$1\\\%/g;
1700: # Substitute special symbols... and allow line breaks at each /
1701: #
1702: $href = &Apache::lonxml::latex_special_symbols($href);
1703: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1704: $currentstring .= ' ({\tt URI:'.$href.'})';
1705: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1706: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1707: } else {
1708: $currentstring.='';
1709: }
1710: }
1711: return $currentstring;
1712: }
1713:
1714: #-- <li> tag (end tag optional)
1715: sub start_li {
1716: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1717: my $currentstring = '';
1718: if ($target eq 'web' || $target eq 'webgrade') {
1719: $currentstring = $token->[4];
1720: } elsif ($target eq 'tex') {
1721: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1722: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1723: #FIXME need to support types i and I
1724: if ($type=~/disc/) {
1725: $currentstring .= ' \item[$\bullet$] ';
1726: } elsif ($type=~/circle/) {
1727: $currentstring .= ' \item[$\circ$] ';
1728: } elsif ($type=~/square/) {
1729: $currentstring .= ' \item[$\diamond$] ';
1730: } elsif ($type eq '1') {
1731: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1732: } elsif ($type eq 'A') {
1733: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1734: } elsif ($type eq 'a') {
1735: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1736: } elsif ($value ne '') {
1737: $currentstring .= ' \item['.$value.'] ';
1738: } else {
1739: $currentstring .= ' \item ';
1740: }
1741: $Apache::londefdef::list_index++;
1742: }
1743: return $currentstring;
1744: }
1745:
1746: sub end_li {
1747: my ($target,$token) = @_;
1748: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1749: if ($target eq 'web' || $target eq 'webgrade') {
1750: $currentstring .= $token->[2];
1751: }
1752: return $currentstring;
1753: }
1754:
1755: #-- <u> tag (end tag required)
1756: sub start_u {
1757: my ($target,$token) = @_;
1758: my $currentstring = '';
1759: if ($target eq 'web' || $target eq 'webgrade') {
1760: $currentstring .= $token->[4];
1761: } elsif ($target eq 'tex') {
1762: &Apache::lonxml::startredirection();
1763: }
1764: return $currentstring;
1765: }
1766:
1767: sub end_u {
1768: my ($target,$token) = @_;
1769: my $currentstring = '';
1770: if ($target eq 'web' || $target eq 'webgrade') {
1771: $currentstring .= $token->[2];
1772: } elsif ($target eq 'tex') {
1773: $currentstring=&Apache::lonxml::endredirection();
1774: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1775: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1776: $currentstring=~s/(\S)\s*$/$1\}/;
1777: }
1778: return $currentstring;
1779: }
1780:
1781: #-- <ul> tag (end tag required)
1782: sub start_ul {
1783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1784: my $currentstring = &end_p(); # Close off enclosing list.
1785: if ($target eq 'web' || $target eq 'webgrade') {
1786: $currentstring .= $token->[4];
1787: } elsif ($target eq 'tex') {
1788: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1789: $Apache::londefdef::list_index=0;
1790: if ($TeXtype eq 'disc') {
1791: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1792: '\renewcommand{\labelitemii}{$\bullet$}'.
1793: '\renewcommand{\labelitemiii}{$\bullet$}'.
1794: '\renewcommand{\labelitemiv}{$\bullet$}';
1795: } elsif ($TeXtype eq 'circle') {
1796: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1797: '\renewcommand{\labelitemii}{$\circ$}'.
1798: '\renewcommand{\labelitemiii}{$\circ$}'.
1799: '\renewcommand{\labelitemiv}{$\circ$}';
1800: } elsif ($TeXtype eq 'square') {
1801: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1802: '\renewcommand{\labelitemii}{$\diamond$}'.
1803: '\renewcommand{\labelitemiii}{$\diamond$}'.
1804: '\renewcommand{\labelitemiv}{$\diamond$}';
1805: }
1806: $currentstring .= '\strut \begin{itemize}';
1807: }
1808: return $currentstring;
1809: }
1810:
1811: sub end_ul {
1812: my ($target,$token) = @_;
1813: my $currentstring = '';
1814: if ($target eq 'web' || $target eq 'webgrade') {
1815: $currentstring = $token->[2];
1816: } elsif ($target eq 'tex') {
1817: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1818: '\renewcommand{\labelitemii}{$\bullet$}'.
1819: '\renewcommand{\labelitemiii}{$\bullet$}'.
1820: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1821: }
1822: return $currentstring;
1823: }
1824:
1825: #-- <menu> tag (end tag required)
1826: sub start_menu {
1827: my ($target,$token) = @_;
1828: my $currentstring = '';
1829: if ($target eq 'web' || $target eq 'webgrade') {
1830: $currentstring = $token->[4];
1831: } elsif ($target eq 'tex') {
1832: $currentstring = " \\begin{itemize} ";
1833: }
1834: return $currentstring;
1835: }
1836:
1837: sub end_menu {
1838: my ($target,$token) = @_;
1839: my $currentstring = '';
1840: if ($target eq 'web' || $target eq 'webgrade') {
1841: $currentstring = $token->[2];
1842: } elsif ($target eq 'tex') {
1843: $currentstring = " \\end{itemize}";
1844: }
1845: return $currentstring;
1846: }
1847:
1848: #-- <dir> tag (end tag required)
1849: sub start_dir {
1850: my ($target,$token) = @_;
1851: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1852: if ($target eq 'web' || $target eq 'webgrade') {
1853: $currentstring .= $token->[4];
1854: } elsif ($target eq 'tex') {
1855: $currentstring .= " \\begin{itemize} ";
1856: }
1857: return $currentstring;
1858: }
1859:
1860: sub end_dir {
1861: my ($target,$token) = @_;
1862: my $currentstring = '';
1863: if ($target eq 'web' || $target eq 'webgrade') {
1864: $currentstring = $token->[2];
1865: } elsif ($target eq 'tex') {
1866: $currentstring = " \\end{itemize}";
1867: }
1868: return $currentstring;
1869: }
1870:
1871: #-- <ol> tag (end tag required)
1872: sub start_ol {
1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1874: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1875: if ($target eq 'web' || $target eq 'webgrade') {
1876: $currentstring .= $token->[4];
1877: } elsif ($target eq 'tex') {
1878: $Apache::londefdef::list_index=0;
1879: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1880: if ($type eq '1') {
1881: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1882: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1883: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1884: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1885: } elsif ($type eq 'A') {
1886: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1887: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1888: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1889: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1890: } elsif ($type eq 'a') {
1891: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1892: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1893: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1894: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1895: } elsif ($type eq 'i') {
1896: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1897: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1898: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1899: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1900: } elsif ($type eq 'I') {
1901: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1902: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1903: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1904: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1905: }
1906: $currentstring .= '\strut \begin{enumerate}';
1907: }
1908: return $currentstring;
1909: }
1910:
1911: sub end_ol {
1912: my ($target,$token) = @_;
1913: my $currentstring = '';
1914: if ($target eq 'web' || $target eq 'webgrade') {
1915: $currentstring = $token->[2];
1916: } elsif ($target eq 'tex') {
1917: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1918: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1919: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1920: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1921: }
1922: return $currentstring;
1923: }
1924:
1925: #-- <dl> tag (end tag required)
1926: sub start_dl {
1927: my ($target,$token) = @_;
1928: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1929: if ($target eq 'web' || $target eq 'webgrade') {
1930: $currentstring .= $token->[4];
1931: } elsif ($target eq 'tex') {
1932: $currentstring .= '\begin{description}';
1933: $Apache::londefdef::DL++;
1934: push(@Apache::londefdef::description,[]);
1935: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1936: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1937: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1938: }
1939: return $currentstring;
1940: }
1941:
1942: sub end_dl {
1943: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1944: my $currentstring = '';
1945: if ($target eq 'web' || $target eq 'webgrade') {
1946: $currentstring = $token->[2];
1947: } elsif ($target eq 'tex') {
1948: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1949: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1950: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1951: $currentstring.=' '.$element.' ';
1952: }
1953: pop(@Apache::londefdef::description);
1954: $currentstring.='\end{description}';
1955: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1956: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1957: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1958: $Apache::londefdef::DL--;
1959: }
1960: return $currentstring;
1961: }
1962:
1963: #-- <dt> tag (end tag optional)
1964: sub start_dt {
1965: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1966: my $currentstring='';
1967: if ($target eq 'web' || $target eq 'webgrade') {
1968: $currentstring = $token->[4];
1969: } elsif ($target eq 'tex') {
1970: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1971: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1972: &Apache::lonxml::startredirection();
1973: $Apache::londefdef::DT[-1]++;
1974: $Apache::londefdef::seenDT[-1]=1;
1975: }
1976: return $currentstring;
1977: }
1978:
1979: sub end_dt {
1980: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1981: my $currentstring = '';
1982: if ($target eq 'web' || $target eq 'webgrade') {
1983: $currentstring = $token->[2];
1984: } elsif ($target eq 'tex') {
1985: if ($Apache::londefdef::DT[-1]) {
1986: my $data=&item_cleanup();
1987: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1988: $Apache::londefdef::DT[-1]--;
1989: }
1990: }
1991: return $currentstring;
1992: }
1993:
1994: sub item_cleanup {
1995: my $item=&Apache::lonxml::endredirection();
1996: $item=~s/\\begin{center}//g;
1997: $item=~s/\\end{center}//g;
1998: return $item;
1999: }
2000:
2001: #-- <dd> tag (end tag optional)
2002: sub start_dd {
2003: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2004: my $currentstring = '';
2005: if ($target eq 'web' || $target eq 'webgrade') {
2006: $currentstring = $token->[4];
2007: } elsif ($target eq 'tex') {
2008: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2009: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2010: if (!$Apache::londefdef::seenDT[-1]) {
2011: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2012: }
2013: push(@{$Apache::londefdef::description[-1]},'');
2014: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2015: $Apache::londefdef::DD[-1]++;
2016: &Apache::lonxml::startredirection();
2017: }
2018: return $currentstring;
2019: }
2020:
2021: sub end_dd {
2022: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2023: my $currentstring = '';
2024: if ($target eq 'web' || $target eq 'webgrade') {
2025: $currentstring = $token->[2];
2026: } elsif ($target eq 'tex') {
2027: $Apache::londefdef::description[-1]->[-1].=
2028: &Apache::lonxml::endredirection().' \vskip 0mm ';
2029: $Apache::londefdef::DD[-1]--;
2030: }
2031: return $currentstring;
2032: }
2033:
2034: #-- <table> tag (end tag required)
2035: # <table> also ends any prior <p> that is not closed.
2036: # but, unless I allow <p>'s to nest, that's the
2037: # only way I could think of to allow <p> in
2038: # <tr> <th> bodies
2039: #
2040: #list of supported attributes: border,width,TeXwidth,TeXtheme
2041: # align
2042: sub start_table {
2043: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2044: my $textwidth = '';
2045: my $currentstring = &end_p();
2046: if ($target eq 'web' || $target eq 'webgrade') {
2047: $currentstring .= $token->[4];
2048: } elsif ($target eq 'tex') {
2049: &disable_para(); # Can't have paras in a table.
2050:
2051:
2052: # New table code:
2053:
2054: # Get the parameters that we can do something about:
2055:
2056: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2057: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2058: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2059: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2060: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2061:
2062: # The only thing that needs any figuring out is the width.. and then only if it is
2063: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2064: #
2065:
2066: my $table = new Apache::lontable();
2067: if ((defined $border) && ($border > 0)) {
2068: # &Apache::lonnet::logthis("Turning on table borders: $border");
2069: $table->table_border(1);
2070: if (!defined $cell_border) {
2071: $table->cell_border(1); # Default for rules is all if rules not defined.
2072: }
2073: }
2074:
2075: if ((defined $cell_border)) {
2076: if ($cell_border eq 'all') {
2077: $table->cell_border(1);
2078: } elsif ($cell_border eq 'rows') {
2079: $table->cell_border(2);
2080: } elsif ($cell_border eq 'cols') {
2081: $table->cell_border(3);
2082: } elsif($cell_border eq 'groups') {
2083: $table->cell_border(4);
2084: } else {
2085: $table->cell_border(0);
2086: }
2087: }
2088: if (defined $theme) {
2089: $table->theme($theme);
2090: }
2091: if (defined $align) {
2092: $table->alignment($align);
2093: }
2094:
2095: # Missing width is most of page width
2096:
2097: if (!(defined $width)) {
2098: $width = '70%';
2099: }
2100:
2101: # If a percentage, need to calculate what this means in terms of
2102: # page width:
2103:
2104: if ($width =~ /%$/) {
2105: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2106: $width =~ s/%//;
2107: $width = $width * $textwidth / 100.0;
2108: $width .= " mm";
2109: $table->width($width);
2110: }
2111:
2112: push(@Apache::londefdef::table, $table);
2113: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2114:
2115: }
2116: return $currentstring;
2117: }
2118:
2119: sub end_table {
2120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2121: my $currentstring = '';
2122: if ($target eq 'web' || $target eq 'webgrade') {
2123: $currentstring = $token->[2];
2124: } elsif ($target eq 'tex') {
2125:
2126:
2127: my $table = pop(@Apache::londefdef::table);
2128: my $t = $table->generate();
2129: # &Apache::lonnet::logthis("Generating string");
2130: $currentstring = $t->generate_string();
2131: # &Apache::lonnet::logthis("Generated: $currentstring");
2132: &enable_para();
2133:
2134: }
2135: return $currentstring;
2136: }
2137:
2138: #-- <tr> tag (end tag optional)
2139: sub start_tr {
2140: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2141: my $currentstring = '';
2142: if ($target eq 'web' || $target eq 'webgrade') {
2143: $currentstring = $token->[4];
2144: } elsif ($target eq 'tex') {
2145:
2146: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2147: $Apache::londefdef::table[-1]->start_row();
2148:
2149: if ($align ne '') {
2150: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2151: }
2152:
2153: #---------------------------------------------------------------
2154: # Old table code.
2155: #---------------------------------------------------------------
2156:
2157: if (0) {
2158: $Apache::londefdef::table[-1]{'row_number'}++;
2159: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2160: if ($alignchar ne '') {
2161: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2162: } else {
2163: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2164: }
2165: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2166: #
2167: # Need to save the number of table columns to preserve the max # columns.
2168: #
2169: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2170: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2171: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2172: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2173: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2174: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2175: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2176: }
2177: }
2178: return $currentstring;
2179: }
2180:
2181: sub end_tr {
2182: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2183: my $currentstring = &end_p(); # Close any pending <p> in the row.
2184: if ($target eq 'web' || $target eq 'webgrade') {
2185: $currentstring .= $token->[2];
2186: } elsif ($target eq 'tex') {
2187:
2188: # In case the user is missing a </td> or </th> tag:
2189:
2190: if ($Apache::londefdef::TD_redirection) {
2191: &end_td_tex($parstack,$parser,$safeeval);
2192: }
2193: $Apache::londefdef::table[-1]->end_row();
2194:
2195: #-----------------------------------------------
2196: # Old table code
2197: #-----------------------------------------------
2198:
2199: if (0) {
2200: if ($Apache::londefdef::TD_redirection) {
2201: &end_td_tex($parstack,$parser,$safeeval);
2202: }
2203: # Counter columns must be the maximum number of columns seen
2204: # in the table so far so:
2205: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2206: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2207: }
2208: }
2209:
2210:
2211: }
2212: return $currentstring;
2213: }
2214:
2215: #-- <td> tag (end tag optional)
2216: sub start_td {
2217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2218: my $currentstring = '';
2219: if ($target eq 'web' || $target eq 'webgrade') {
2220: $currentstring = $token->[4];
2221: } elsif ($target eq 'tex') {
2222: $Apache::londefdef::TD_redirection = 1;
2223: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2224: }
2225: return $currentstring;
2226: }
2227:
2228: sub tag_check {
2229: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2230: my @ar=@$parstack;
2231: for (my $i=$#ar-1;$i>=0;$i--) {
2232: if (lc($$tagstack[$i]) eq $good_tag) {
2233: &start_td_tex($parstack,$parser,$safeeval);
2234: last;
2235: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2236: splice @ar, $i+1;
2237: &end_td_tex(\@ar,$parser,$safeeval);
2238: &start_td_tex($parstack,$parser,$safeeval);
2239: last;
2240: }
2241: }
2242: return '';
2243: }
2244:
2245: #
2246: # Factor out cell configuration hash generation:
2247: #
2248:
2249: sub cell_config_hash {
2250: my ($align, $rowspan, $colspan, $width) = @_;
2251: if ($rowspan ne '') {
2252: $rowspan =~ s/^\s+|\s+$//g;
2253: }
2254: if ($colspan ne '') {
2255: $colspan =~ s/^\s+|\s+$//g;
2256: }
2257: my %config;
2258: if ($align ne '') {
2259: $config{'halign'} = $align;
2260: }
2261: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2262: $config{'colspan'} = $colspan;
2263: }
2264: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2265: $config{'rowspan'} = $rowspan;
2266: }
2267: if ($width ne '') {
2268: $config{'width'} = $width;
2269: }
2270: return \%config;
2271: }
2272:
2273: sub start_td_tex {
2274: my ($parstack,$parser,$safeeval) = @_;
2275:
2276: # At this stage, an empty cell is created with the
2277: # appropriate rowspan/colspan and alignment
2278: # attributes, but empty of text. end_td_tex will
2279: # fetch the contents from the recursive parse and
2280: # fill the cell with them:
2281: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2282: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2283: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2284: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2285: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2286:
2287: my $table = $Apache::londefdef::table[-1];
2288: $table->add_cell('', $config);
2289:
2290:
2291: #------------------------------------------------
2292: # Old table code.
2293: #------------------------------------------------
2294:
2295: if (0) {
2296:
2297: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2298: if ($alignchar eq '') {
2299: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2300: }
2301: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2302: $Apache::londefdef::table[-1]{'counter_columns'}++;
2303: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2304: if (defined $TeXwidth) {
2305: my $current_length=&recalc($TeXwidth);
2306: $current_length=~/(\d+\.?\d*)/;
2307: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2308: }
2309: }
2310: &Apache::lonxml::startredirection();
2311: return '';
2312: }
2313:
2314: sub end_td_tex {
2315:
2316: my $text = &Apache::lonxml::endredirection();
2317: my $table = $Apache::londefdef::table[-1];
2318: $table->append_cell_text($text);
2319:
2320: #-------------------------------------------------
2321: # Old table code
2322: #-------------------------------------------------
2323:
2324: if (0) {
2325: my ($parstack,$parser,$safeeval) = @_;
2326: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2327: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2328: my $data = &Apache::lonxml::endredirection();
2329:
2330: # The rowspan array of the table indicates which cells are part of a span.
2331: # n indicates the start of a span set of n rows.
2332: # ^ indicates a cell that continues a span set.
2333: # _ indicates the cell is at the bottom of a span set.
2334: # If this and subsequent cells are part of a rowspan, we must
2335: # push along the row until we find one that is not.
2336:
2337: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2338: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2339: # Part of a span.
2340: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2341: $current_column++;
2342: }
2343: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2344:
2345:
2346: # Get the column and row spans.
2347: # Colspan can be done via \multicolumn if I can figure out the data structs.
2348:
2349: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2350: if (!$colspan) {
2351: $colspan = 1;
2352: }
2353:
2354: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2355: if (!$rowspan) {
2356: $rowspan = 1;
2357: }
2358:
2359:
2360:
2361: for (my $c = 0; $c < $colspan; $c++) {
2362: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2363: for (my $i = 1; $i < $rowspan; $i++) {
2364: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2365: if ($i == ($rowspan-1)) {
2366: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2367: }
2368: }
2369: }
2370:
2371: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2372: if (defined $TeXwidth) {
2373: for (my $c = 0; $c < $colspan; $c++) {
2374: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2375: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2376: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2377: }
2378: } else {
2379: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2380: my $garbage_data=$data;
2381: my $fwidth=0;
2382: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2383: my $current_length=&recalc($1);
2384: $current_length=~/(\d+\.?\d*)/;
2385: if ($fwidth<$1) {$fwidth=$1;}
2386: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2387: }
2388: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2389: my $current_length=$1;
2390: if ($fwidth<$current_length) {$fwidth=$current_length;}
2391: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2392: }
2393: for (my $c = 0; $c < $colspan; $c++) {
2394: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2395: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2396: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2397: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2398: }
2399: } 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)*/) {
2400: my $garbage_data=$data;
2401: my $fwidth=0;
2402: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2403: my $current_length=&recalc($1);
2404: $current_length=~/(\d+\.?\d*)/;
2405: if ($fwidth<$1) {$fwidth=$1;}
2406: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2407: }
2408: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2409: my $current_length=&recalc($1);
2410: $current_length=~/(\d+\.?\d*)/;
2411: if ($fwidth<$1) {$fwidth=$1;}
2412: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2413: }
2414: for (my $c = 0; $c < $colspan; $c++) {
2415: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2416: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2417: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2418: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2419: }
2420: $data=~s/\\\\\s*$//;
2421: } else {
2422: $data=~s/^\s+(\S.*)/$1/;
2423: $data=~s/(.*\S)\s+$/$1/;
2424: $data=~s/(\s)+/$1/;
2425: my ($current_length,$min_length)=(0,0);
2426: if ($data=~/\\vskip/) {
2427: my $newdata=$data;
2428: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2429: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2430: foreach my $elementdata (@newdata) {
2431: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2432: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2433: my @words=split(/ /,$elementdata);
2434: foreach my $word (@words) {
2435: my $lengthword=2.5*&LATEX_length($word);
2436: if ($min_length<$lengthword) {$min_length=$lengthword;}
2437: }
2438: }
2439: } else {
2440: $current_length=2.5*&LATEX_length($data);
2441: my @words=split(/ /,$data);
2442: foreach my $word (@words) {
2443: my $lengthword=2*&LATEX_length($word);
2444: if ($min_length<$lengthword) {$min_length=$lengthword;}
2445: }
2446: }
2447: for (my $c = 0; $c < $colspan; $c++) {
2448: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2449: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2450: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2451: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2452: }
2453: }
2454: }
2455: # Substitute all of the tables nested in this cell in their appropriate places.
2456:
2457:
2458: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2459: for (my $in=0; $in<=$nested_count; $in++) {
2460: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2461: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2462: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2463: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2464:
2465: }
2466: # Should be be killing off the 'include' elements as they're used up?
2467:
2468: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2469:
2470:
2471:
2472:
2473: # the colspan array will indicate how many columns will be spanned by this
2474: # cell..this requires that counter_columns also be adjusted accordingly
2475: # so that the next bunch of text goes in the right cell. Note that since
2476: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2477: #
2478:
2479: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2480: for (my $i = 0; $i < ($colspan -1); $i++) {
2481: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2482: }
2483: for (my $r = 0; $r < $rowspan; $r++) {
2484: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2485: # Put empty text in spanned cols.
2486:
2487: }
2488:
2489: }
2490:
2491: return '';
2492: }
2493:
2494: sub end_td {
2495: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2496: my $currentstring = '';
2497: if ($target eq 'web' || $target eq 'webgrade') {
2498: $currentstring = $token->[2];
2499: } elsif ($target eq 'tex') {
2500: $Apache::londefdef::TD_redirection =0;
2501: &end_td_tex($parstack,$parser,$safeeval);
2502: }
2503: return $currentstring;
2504: }
2505:
2506: #-- <th> tag (end tag optional)
2507: sub start_th {
2508: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2509: my $currentstring = '';
2510: if ($target eq 'web' || $target eq 'webgrade') {
2511: $currentstring = $token->[4];
2512: } elsif ($target eq 'tex') {
2513: $Apache::londefdef::TD_redirection = 1;
2514: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2515: }
2516: return $currentstring;
2517: }
2518:
2519: sub tagg_check {
2520: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2521: my @ar=@$parstack;
2522: for (my $i=$#ar-1;$i>=0;$i--) {
2523: if (lc($$tagstack[$i]) eq $good_tag) {
2524: &start_th_tex($parstack,$parser,$safeeval);
2525: last;
2526: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2527: splice @ar, $i+1;
2528: &end_th_tex(\@ar,$parser,$safeeval);
2529: &start_th_tex($parstack,$parser,$safeeval);
2530: last;
2531: }
2532: }
2533: return '';
2534: }
2535:
2536: sub start_th_tex {
2537: my ($parstack,$parser,$safeeval) = @_;
2538:
2539: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2540: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2541: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2542:
2543: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2544: my $table = $Apache::londefdef::table[-1];
2545: $table->add_cell('\textbf{', $config);
2546:
2547: #-------------------------------------------------------------------------------------
2548: #
2549: # Old table code.
2550: #
2551: #--------------------------------------------------------------------------------------
2552:
2553: if (0) {
2554:
2555:
2556: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2557: if ($alignchar eq '') {
2558: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2559: }
2560: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2561: $Apache::londefdef::table[-1]{'counter_columns'}++;
2562: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2563: if (defined $TeXwidth) {
2564: my $current_length=&recalc($TeXwidth);
2565: $current_length=~/(\d+\.?\d*)/;
2566: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2567: }
2568: }
2569:
2570: # Accept xml until the </th> tag.
2571:
2572: &Apache::lonxml::startredirection();
2573: return '';
2574: }
2575:
2576: sub end_th_tex {
2577: my ($parstack,$parser,$safeeval) = @_;
2578:
2579: my $table = $Apache::londefdef::table[-1];
2580: my $text = &Apache::lonxml::endredirection();
2581: $table->append_cell_text($text.'}');
2582:
2583: #-----------------------------------------------------------------------------
2584: # Old table code:
2585: #-----------------------------------------------------------------------------
2586:
2587: if (0) {
2588: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2589: my $data=&Apache::lonxml::endredirection();
2590: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2591: if (defined $TeXwidth) {
2592: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2593: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2594: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2595: } else {
2596: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2597: my $garbage_data=$data;
2598: my $fwidth=0;
2599: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2600: my $current_length=&recalc($1);
2601: $current_length=~/(\d+\.?\d*)/;
2602: if ($fwidth<$1) {$fwidth=$1;}
2603: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2604: }
2605: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2606: my $current_length=$1;
2607: if ($fwidth<$current_length) {$fwidth=$current_length;}
2608: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2609: }
2610: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2611: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2612: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2613: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2614: } else {
2615: $data=~s/^\s+(\S.*)/$1/;
2616: $data=~s/(.*\S)\s+$/$1/;
2617: $data=~s/(\s)+/$1/;
2618: my ($current_length,$min_length)=(0,0);
2619: if ($data=~/\\vskip/) {
2620: my $newdata=$data;
2621: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2622: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2623: foreach my $elementdata (@newdata) {
2624: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2625: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2626: my @words=split(/ /,$elementdata);
2627: foreach my $word (@words) {
2628: my $lengthword=2.5*&LATEX_length($word);
2629: if ($min_length<$lengthword) {$min_length=$lengthword;}
2630: }
2631: }
2632: } else {
2633: $current_length=2.5*&LATEX_length($data);
2634: my @words=split(/ /,$data);
2635: foreach my $word (@words) {
2636: my $lengthword=2*&LATEX_length($word);
2637: if ($min_length<$lengthword) {$min_length=$lengthword;}
2638: }
2639: }
2640: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2641: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2642: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2643: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2644: }
2645: }
2646: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2647: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2648: }
2649: #make data bold
2650: $data='\textbf{'.$data.'}';
2651: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2652: }
2653: return'';
2654: }
2655:
2656: sub end_th {
2657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2658: my $currentstring = &end_p(); # Close any open <p> in the row.
2659: if ($target eq 'web' || $target eq 'webgrade') {
2660: $currentstring .= $token->[2];
2661: } elsif ($target eq 'tex') {
2662: $Apache::londefdef::TD_redirection =0;
2663: &end_th_tex($parstack,$parser,$safeeval);
2664: }
2665: return $currentstring;
2666: }
2667:
2668: #-- <img> tag (end tag forbidden)
2669: #
2670: # Render the <IMG> tag.
2671: # <IMG> has the following attributes (in addition to the
2672: # standard HTML ones:
2673: # TeXwrap - Governs how the tex target will try to wrap text around
2674: # horizontally aligned images.
2675: # TeXwidth - The width of the image when rendered for print (mm).
2676: # TeXheight - The height of the image when rendered for print (mm)
2677: # (Note there seems to also be support for this as a % of page size)
2678: #
2679: sub start_img {
2680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2681: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2682: undef,1);
2683: if (! $src &&
2684: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2685: ) {
2686: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2687: return '';
2688: }
2689: &Apache::lonxml::extlink($src);
2690: my $currentstring = '';
2691: my $scaling = .3;
2692:
2693: # Render unto browsers that which are the browser's...
2694:
2695: if ($target eq 'web' || $target eq 'webgrade') {
2696: my $enc = ('yes' eq
2697: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2698: $safeeval)));
2699: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2700: $enc);
2701:
2702: # and render unto TeX that which is LaTeX
2703: } elsif ($target eq 'tex') {
2704: #
2705: # The alignment will require some superstructure to be put around
2706: # the \includegraphics stuff. At present we can only partially
2707: # simulate the alignments offered by html.
2708: #
2709: #
2710: my $align = lc(&Apache::lonxml::get_param('align',
2711: $parstack,
2712: $safeeval,
2713: undef,1));
2714: if(!$align) {
2715: $align = "bottom"; # This is html's default so it's ours too.
2716: }
2717: #
2718: &Apache::lonxml::debug("Alignemnt = $align");
2719: # LaTeX's image/text wrapping is really bad since it wants to
2720: # make figures float.
2721: # The user has the optional parameter (applicable only to l/r
2722: # alignment to use the picins/parpic directive to get wrapped text
2723: # this is also imperfect.. that's why we give them a choice...
2724: # so they can't yell at us for our choice.
2725: #
2726: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2727: $parstack,
2728: $safeeval,
2729: undef,0);
2730: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2731: if(!$latex_rendering) {
2732: $latex_rendering = "texwrap";
2733: }
2734: # using texwrap inside a table does not work. So, if after all of this,
2735: # texwrap is on, we turn it off if we detect we're in a table:
2736: #
2737: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2738: $latex_rendering = 'parpic';
2739: }
2740:
2741: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2742:
2743: #if original bmp/gif/jpg/png file exist do following:
2744: my $origsrc=$src;
2745: my ($path,$file) = &get_eps_image($src);
2746: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2747: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2748: &Apache::lonxml::debug("path = $path file = $file src = $src");
2749: if (-e $src) {
2750: &Apache::lonxml::debug("$src exists");
2751: my ($height_param,$width_param)=
2752: &image_size($origsrc,0.3,$parstack,$safeeval);
2753: my $size;
2754: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2755: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2756: # Default size if not able to extract that (e.g. eps image).
2757:
2758: # &Apache::lonnet::logthis("Size = $size");
2759:
2760: $size='['.$size;
2761: $size=~s/,$/]/;
2762: $currentstring .= '\graphicspath{{'.$path.'}}'
2763: .'\includegraphics'.$size.'{'.$file.'} ';
2764: my $closure;
2765: ($currentstring, $closure) = &align_latex_image($align,
2766: $latex_rendering,
2767: $currentstring,
2768: $width_param,
2769: $height_param);
2770: $currentstring .= $closure;
2771:
2772: } else {
2773: &Apache::lonxml::debug("$src does not exist");
2774: #original image file doesn't exist so check the alt attribute
2775: my $alt =
2776: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2777: unless ($alt) {
2778: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2779: }
2780:
2781: if ($alt) { $currentstring .= ' '.$alt.' '; }
2782: }
2783:
2784: # And here's where the semi-quote breaks down: allow the user
2785: # to edit the beast as well by rendering the problem for edit:
2786: } elsif ($target eq 'edit') {
2787: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2788: $currentstring .=&Apache::edit::tag_start($target,$token);
2789: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2790: &Apache::edit::browse('src',undef,'alt',$only).' '.
2791: &Apache::edit::search('src',undef,'alt').'<br />';
2792: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2793: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2794: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2795: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2796: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2797: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2798: ['','bottom','middle','top','left','right'],$token,5);
2799: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2800: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2801: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2802: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2803:
2804: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2805: ['no','yes'], $token, 2);
2806: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2807: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2808: }
2809: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2810: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2811: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2812: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2813:
2814: if ($token->[2]{'src'}=~/\$/) {
2815: $currentstring.=&mt('Variable image source');
2816: } elsif ($token->[2]{'src'}=~/\S/) {
2817: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2818: if ($width) { $currentstring.=' width="'.$width.'" '; }
2819: if ($height) { $currentstring.=' height="'.$height.'" '; }
2820: $currentstring .= ' />';
2821: } else {
2822: $currentstring.=&mt("No image source specified");
2823: }
2824: } elsif ($target eq 'modified') {
2825: my ($osrc,$owidth,$oheight)=
2826: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2827: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2828: $safeeval,'src','alt','align',
2829: 'TeXwidth','TeXheight', 'TeXwrap',
2830: 'width','height','encrypturl');
2831: my ($nsrc,$nwidth,$nheight)=
2832: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2833: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2834: &image_replication($loc);
2835: my ($iwidth,$iheight);
2836: if (-e $loc) {
2837: my $image = Image::Magick->new;
2838: $image->Read($loc);
2839: ($iwidth, $iheight) = ($image->Get('width'),
2840: $image->Get('height'));
2841: }
2842: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2843: # changed image or no size specified,
2844: # if they didn't explicitly change the
2845: # width or height use the ones from the image
2846: if ($iwidth && $iheight) {
2847: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2848: $token->[2]{'width'} = $iwidth;$ctag=1;
2849: }
2850: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2851: $token->[2]{'height'}=$iheight;$ctag=1;
2852: }
2853: }
2854: }
2855: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2856: # if we don't have a width or height
2857: if ($iwidth && $cwidth && !$cheight) {
2858: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2859: }
2860: if ($iheight && $cheight && !$cwidth) {
2861: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2862: }
2863: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2864: }
2865:
2866: return $currentstring;
2867: }
2868:
2869: sub end_img {
2870: my ($target,$token) = @_;
2871: my $currentstring = '';
2872: if ($target eq 'web' || $target eq 'webgrade') {
2873: $currentstring = $token->[2];
2874: } elsif ($target eq 'tex') {
2875: $currentstring = '';
2876: }
2877: return $currentstring;
2878: }
2879:
2880: #-- <applet> tag (end tag required)
2881: sub start_applet {
2882: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2883:
2884: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2885: &Apache::lonxml::extlink($code);
2886: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2887: undef,1);
2888: &Apache::lonxml::extlink($archive);
2889: my $currentstring = '';
2890: if ($target eq 'web' || $target eq 'webgrade') {
2891: $currentstring = &Apache::lonenc::encrypt_ref($token,
2892: {'code'=>$code,
2893: 'archive'=>$archive}
2894: );
2895: } elsif ($target eq 'tex') {
2896: # Turn off some stuff we can't be inside thank you LaTeX
2897:
2898: my $restart_sub = 0;
2899: my $restart_sup = 0;
2900:
2901: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2902: # using the start_ stop_ functions.. those tags only care about
2903: # $target.
2904:
2905: if (&is_inside_of($tagstack, "sub")) {
2906: $restart_sub = 1;
2907: $currentstring .= &end_sub($target, $token, $tagstack,
2908: $parstack, $parser, $safeeval);
2909: }
2910: if (&is_inside_of($tagstack, "sup")) {
2911: $restart_sup = 1;
2912: $currentstring .= &end_sup($target, $token, $tagstack,
2913: $parstack, $parser, $safeeval);
2914: }
2915:
2916: # Now process the applet; just replace it with its alt attribute.
2917:
2918: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2919: $safeeval,undef,1);
2920: unless ($alttag) {
2921: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2922: undef,1);
2923: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2924: $code);
2925: }
2926: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2927: '.}\end{center}';
2928:
2929: # Turn stuff back on that we can't be inside of.
2930:
2931: if ($restart_sub) {
2932: $currentstring .= &start_sub($target, $token, $tagstack,
2933: $parstack, $parser, $safeeval);
2934: }
2935: if ($restart_sup) {
2936: $currentstring .= &start_sup($target, $token, $tagstack,
2937: $parstack, $parser, $safeeval);
2938: }
2939: }
2940: return $currentstring;
2941: }
2942:
2943: sub end_applet {
2944: my ($target,$token) = @_;
2945: my $currentstring = '';
2946: if ($target eq 'web' || $target eq 'webgrade') {
2947: $currentstring = $token->[2];
2948: } elsif ($target eq 'tex') {
2949: }
2950: return $currentstring;
2951: }
2952:
2953: #-- <embed> tag (end tag optional/required)
2954: sub start_embed {
2955: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2956: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2957: &Apache::lonxml::extlink($src);
2958: my $currentstring = '';
2959: if ($target eq 'web' || $target eq 'webgrade') {
2960: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2961: } elsif ($target eq 'tex') {
2962: }
2963: return $currentstring;
2964: }
2965:
2966: sub end_embed {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web' || $target eq 'webgrade') {
2970: $currentstring = $token->[2];
2971: } elsif ($target eq 'tex') {
2972: # ./.
2973: }
2974: return $currentstring;
2975: }
2976:
2977: #-- <param> tag (end tag forbidden)
2978: sub start_param {
2979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2980: if (&Apache::lonxml::get_param('name',$parstack,
2981: $safeeval,undef,1)=~/^cabbase$/i) {
2982: my $value=&Apache::lonxml::get_param('value',$parstack,
2983: $safeeval,undef,1);
2984: &Apache::lonxml::extlink($value);
2985: }
2986:
2987: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2988: &Apache::lonxml::extlink($src);
2989: my $currentstring = '';
2990: if ($target eq 'web' || $target eq 'webgrade') {
2991: my %toconvert;
2992: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2993: if ($src) { $toconvert{'src'}= $src; }
2994: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2995: undef,1);
2996: if ($name=~/^cabbase$/i) {
2997: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2998: $safeeval,undef,1);
2999: }
3000: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3001: } elsif ($target eq 'tex') {
3002: }
3003: return $currentstring;
3004: }
3005:
3006: sub end_param {
3007: my ($target,$token) = @_;
3008: my $currentstring = '';
3009: if ($target eq 'web' || $target eq 'webgrade') {
3010: $currentstring = $token->[2];
3011: } elsif ($target eq 'tex') {
3012: }
3013: return $currentstring;
3014: }
3015:
3016: #-- <allow> tag
3017: sub start_allow {
3018: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3019: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3020: &Apache::lonxml::extlink($src);
3021:
3022: if ($target eq 'tex') { &image_replication($src); }
3023: my $result;
3024: if ($target eq 'edit') {
3025: $result .=&Apache::edit::tag_start($target,$token);
3026: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3027: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3028: } elsif ($target eq 'modified') {
3029: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3030: $safeeval,'src');
3031: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3032: }
3033: return $result;
3034: }
3035:
3036: sub end_allow {
3037: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3038: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3039: return '';
3040: }
3041:
3042: #-- Frames (end tag required)
3043: #-- <frameset>
3044: sub start_frameset {
3045: my ($target,$token) = @_;
3046: my $currentstring = ''; # Close any pending para.
3047: if ($target eq 'web' || $target eq 'webgrade') {
3048: $currentstring =
3049: &Apache::loncommon::start_page($Apache::londefdef::title,
3050: $Apache::londefdef::head,
3051: {'add_entries' => $token->[2],
3052: # 'no_title' => 1,
3053: 'force_register' => 1,
3054: 'frameset' => 1,});
3055:
3056: }
3057: return $currentstring;
3058: }
3059:
3060: sub end_frameset {
3061: my ($target,$token) = @_;
3062: my $currentstring = '';
3063: if ($target eq 'web' || $target eq 'webgrade') {
3064: $currentstring = $token->[2];
3065: }
3066: return $currentstring;
3067: }
3068:
3069: #-- <xmp> (end tag required)
3070: sub start_xmp {
3071: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3072: my $currentstring = '';
3073: if ($target eq 'web' || $target eq 'webgrade') {
3074: $currentstring .= $token->[4];
3075: } elsif ($target eq 'tex') {
3076: $currentstring .= '\begin{verbatim}';
3077: }
3078: return $currentstring;
3079: }
3080:
3081: sub end_xmp {
3082: my ($target,$token) = @_;
3083: my $currentstring = '';
3084: if ($target eq 'web' || $target eq 'webgrade') {
3085: $currentstring .= $token->[2];
3086: } elsif ($target eq 'tex') {
3087: $currentstring .= '\end{verbatim}';
3088: }
3089: return $currentstring;
3090: }
3091:
3092: #-- <pre> (end tag required)
3093: sub start_pre {
3094: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3095: my $currentstring = &end_p(); # close off pending <p>
3096: if ($target eq 'web' || $target eq 'webgrade') {
3097: $currentstring .= $token->[4];
3098: } elsif ($target eq 'tex') {
3099: $currentstring .= '\begin{verbatim}';
3100: &Apache::lonxml::disable_LaTeX_substitutions();
3101: }
3102: return $currentstring;
3103: }
3104:
3105: sub end_pre {
3106: my ($target,$token) = @_;
3107: my $currentstring = '';
3108: if ($target eq 'web' || $target eq 'webgrade') {
3109: $currentstring .= $token->[2];
3110: } elsif ($target eq 'tex') {
3111: $currentstring .= '\end{verbatim}';
3112: &Apache::lonxml::enable_LaTeX_substitutions();
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <insert>
3118: sub start_insert {
3119: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web' || $target eq 'webgrade') {
3122: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3123: $currentstring .= '<b>'.$display.'</b>';;
3124: }
3125: return $currentstring;
3126: }
3127:
3128: sub end_insert {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web' || $target eq 'webgrade') {
3132: $currentstring .= '';
3133: }
3134: return $currentstring;
3135: }
3136:
3137: #-- <externallink>
3138: sub start_externallink {
3139: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3140: my $currentstring = '';
3141: if ($target eq 'web' || $target eq 'webgrade') {
3142: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3143: $currentstring .= '<b>'.$display.'</b>';;
3144: }
3145: return $currentstring;
3146: }
3147:
3148: sub end_externallink {
3149: my ($target,$token) = @_;
3150: my $currentstring = '';
3151: if ($target eq 'web' || $target eq 'webgrade') {
3152: $currentstring .= '';
3153: }
3154: return $currentstring;
3155: }
3156:
3157: #-- <blankspace heigth="">
3158: sub start_blankspace {
3159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3160: my $currentstring = &end_p(); # closes off any unclosed <p>
3161: if ($target eq 'tex') {
3162: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3163: $currentstring .= '\vskip '.$howmuch.' ';
3164: }
3165: return $currentstring;
3166: }
3167:
3168: sub end_blankspace {
3169: my ($target,$token) = @_;
3170: my $currentstring = '';
3171: if ($target eq 'tex') {
3172: $currentstring .= '';
3173: }
3174: return $currentstring;
3175: }
3176:
3177: #-- <abbr> tag (end tag required)
3178: sub start_abbr {
3179: my ($target,$token) = @_;
3180: my $currentstring = '';
3181: if ($target eq 'web' || $target eq 'webgrade') {
3182: $currentstring = $token->[4];
3183: }
3184: return $currentstring;
3185: }
3186:
3187: sub end_abbr {
3188: my ($target,$token) = @_;
3189: my $currentstring = '';
3190: if ($target eq 'web' || $target eq 'webgrade') {
3191: $currentstring = $token->[2];
3192: }
3193: return $currentstring;
3194: }
3195:
3196: #-- <acronym> tag (end tag required)
3197: sub start_acronym {
3198: my ($target,$token) = @_;
3199: my $currentstring = '';
3200: if ($target eq 'web' || $target eq 'webgrade') {
3201: $currentstring = $token->[4];
3202: }
3203: return $currentstring;
3204: }
3205:
3206: sub end_acronym {
3207: my ($target,$token) = @_;
3208: my $currentstring = '';
3209: if ($target eq 'web' || $target eq 'webgrade') {
3210: $currentstring = $token->[2];
3211: }
3212: return $currentstring;
3213: }
3214:
3215: #-- <area> tag (end tag forbidden)
3216: sub start_area {
3217: my ($target,$token) = @_;
3218: my $currentstring = '';
3219: if ($target eq 'web' || $target eq 'webgrade') {
3220: $currentstring = $token->[4];
3221: }
3222: return $currentstring;
3223: }
3224:
3225: sub end_area {
3226: my ($target,$token) = @_;
3227: my $currentstring = '';
3228: if ($target eq 'web' || $target eq 'webgrade') {
3229: $currentstring = $token->[2];
3230: }
3231: return $currentstring;
3232: }
3233:
3234: #-- <base> tag (end tag forbidden)
3235: sub start_base {
3236: my ($target,$token) = @_;
3237: my $currentstring = '';
3238: if ($target eq 'web' || $target eq 'webgrade') {
3239: $currentstring = $token->[4];
3240: }
3241: return $currentstring;
3242: }
3243:
3244: sub end_base {
3245: my ($target,$token) = @_;
3246: my $currentstring = '';
3247: if ($target eq 'web' || $target eq 'webgrade') {
3248: $currentstring = $token->[2];
3249: }
3250: return $currentstring;
3251: }
3252:
3253: #-- <bdo> tag (end tag required)
3254: sub start_bdo {
3255: my ($target,$token) = @_;
3256: my $currentstring = '';
3257: if ($target eq 'web' || $target eq 'webgrade') {
3258: $currentstring = $token->[4];
3259: }
3260: return $currentstring;
3261: }
3262:
3263: sub end_bdo {
3264: my ($target,$token) = @_;
3265: my $currentstring = '';
3266: if ($target eq 'web' || $target eq 'webgrade') {
3267: $currentstring = $token->[2];
3268: }
3269: return $currentstring;
3270: }
3271:
3272: #-- <bgsound> tag (end tag optional)
3273: sub start_bgsound {
3274: my ($target,$token) = @_;
3275: my $currentstring = '';
3276: if ($target eq 'web' || $target eq 'webgrade') {
3277: $currentstring = $token->[4];
3278: }
3279: return $currentstring;
3280: }
3281:
3282: sub end_bgsound {
3283: my ($target,$token) = @_;
3284: my $currentstring = '';
3285: if ($target eq 'web' || $target eq 'webgrade') {
3286: $currentstring = $token->[2];
3287: }
3288: return $currentstring;
3289: }
3290:
3291: #-- <blink> tag (end tag required)
3292: sub start_blink {
3293: my ($target,$token) = @_;
3294: my $currentstring = '';
3295: if ($target eq 'web' || $target eq 'webgrade') {
3296: $currentstring = $token->[4];
3297: }
3298: return $currentstring;
3299: }
3300:
3301: sub end_blink {
3302: my ($target,$token) = @_;
3303: my $currentstring = '';
3304: if ($target eq 'web' || $target eq 'webgrade') {
3305: $currentstring = $token->[2];
3306: }
3307: return $currentstring;
3308: }
3309:
3310: #-- <blockquote> tag (end tag required)
3311: sub start_blockquote {
3312: my ($target,$token) = @_;
3313: my $currentstring = &end_p(); # Close any unclosed <p>
3314: if ($target eq 'web' || $target eq 'webgrade') {
3315: $currentstring .= $token->[4];
3316: }
3317: if ($target eq 'tex') {
3318: $currentstring .= '\begin{quote}';
3319: }
3320: return $currentstring;
3321: }
3322:
3323: sub end_blockquote {
3324: my ($target,$token) = @_;
3325: my $currentstring = '';
3326: if ($target eq 'web' || $target eq 'webgrade') {
3327: $currentstring = $token->[2];
3328: }
3329: if ($target eq 'tex') {
3330: $currentstring = '\end{quote}';
3331: }
3332: return $currentstring;
3333: }
3334:
3335: #-- <button> tag (end tag required)
3336: sub start_button {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web' || $target eq 'webgrade') {
3340: $currentstring = $token->[4];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: sub end_button {
3346: my ($target,$token) = @_;
3347: my $currentstring = '';
3348: if ($target eq 'web' || $target eq 'webgrade') {
3349: $currentstring = $token->[2];
3350: }
3351: return $currentstring;
3352: }
3353:
3354: #-- <caption> tag (end tag required)
3355: sub start_caption {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web' || $target eq 'webgrade') {
3359: $currentstring = $token->[4];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: sub end_caption {
3365: my ($target,$token) = @_;
3366: my $currentstring = '';
3367: if ($target eq 'web' || $target eq 'webgrade') {
3368: $currentstring = $token->[2];
3369: }
3370: return $currentstring;
3371: }
3372:
3373: #-- <col> tag (end tag forbdden)
3374: sub start_col {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web' || $target eq 'webgrade') {
3378: $currentstring = $token->[4];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: sub end_col {
3384: my ($target,$token) = @_;
3385: my $currentstring = '';
3386: if ($target eq 'web' || $target eq 'webgrade') {
3387: $currentstring = $token->[2];
3388: }
3389: return $currentstring;
3390: }
3391:
3392: #-- <colgroup tag (end tag optional)
3393: sub start_colgroup {
3394: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web' || $target eq 'webgrade') {
3397: $currentstring = $token->[4];
3398: }
3399: if ($target eq 'tex') {
3400: # TODO: Ensure this tag is in a table:
3401:
3402: # Fetch the attributes and build the hash for the
3403: # call to define_colgroup.
3404:
3405: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3406: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3407:
3408: my %colgroup_params;
3409: if ($span ne '') {
3410: $colgroup_params{'span'} = $span;
3411: }
3412: if ($halign ne '') {
3413: $colgroup_params{'halign'} = $halign;
3414: }
3415:
3416: my $table = $Apache::londefdef::table[-1];
3417: $table->define_colgroup(\%colgroup_params);
3418:
3419: }
3420: return $currentstring;
3421: }
3422:
3423: sub end_colgroup {
3424: my ($target,$token) = @_;
3425: my $currentstring = '';
3426: if ($target eq 'web' || $target eq 'webgrade') {
3427: $currentstring = $token->[2];
3428: }
3429: return $currentstring;
3430: }
3431:
3432:
3433: #-- <del> tag (end tag required)
3434: sub start_del {
3435: my ($target,$token) = @_;
3436: my $currentstring = '';
3437: if ($target eq 'web' || $target eq 'webgrade') {
3438: $currentstring = $token->[4];
3439: } elsif ($target eq 'tex') {
3440: &disable_para();
3441: $currentstring .= '\st{';
3442: }
3443: return $currentstring;
3444: }
3445:
3446: sub end_del {
3447: my ($target,$token) = @_;
3448: my $currentstring = '';
3449: if ($target eq 'web' || $target eq 'webgrade') {
3450: $currentstring = $token->[2];
3451: } elsif ($target eq 'tex') {
3452: &enable_para();
3453: $currentstring = '}';
3454: }
3455: return $currentstring;
3456: }
3457:
3458: #-- <fieldset> tag (end tag required)
3459: sub start_fieldset {
3460: my ($target,$token) = @_;
3461: my $currentstring = '';
3462: if ($target eq 'web' || $target eq 'webgrade') {
3463: $currentstring = $token->[4];
3464: }
3465: return $currentstring;
3466: }
3467:
3468: sub end_fieldset {
3469: my ($target,$token) = @_;
3470: my $currentstring = '';
3471: if ($target eq 'web' || $target eq 'webgrade') {
3472: $currentstring = $token->[2];
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <frame> tag (end tag forbidden)
3478: sub start_frame {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web' || $target eq 'webgrade') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_frame {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web' || $target eq 'webgrade') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <iframe> tag (end tag required)
3497: sub start_iframe {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web' || $target eq 'webgrade') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_iframe {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web' || $target eq 'webgrade') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <ins> tag (end tag required)
3516: sub start_ins {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web' || $target eq 'webgrade') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_ins {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web' || $target eq 'webgrade') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <isindex> tag (end tag forbidden)
3535: sub start_isindex {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web' || $target eq 'webgrade') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_isindex {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web' || $target eq 'webgrade') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <keygen> tag (end tag forbidden)
3554: sub start_keygen {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web' || $target eq 'webgrade') {
3558: $currentstring = $token->[4];
3559: }
3560: return $currentstring;
3561: }
3562:
3563: sub end_keygen {
3564: my ($target,$token) = @_;
3565: my $currentstring = '';
3566: if ($target eq 'web' || $target eq 'webgrade') {
3567: $currentstring = $token->[2];
3568: }
3569: return $currentstring;
3570: }
3571:
3572: #-- <label> tag
3573: sub start_label {
3574: my ($target,$token) = @_;
3575: my $currentstring = '';
3576: if ($target eq 'web' || $target eq 'webgrade') {
3577: $currentstring = $token->[4];
3578: }
3579: return $currentstring;
3580: }
3581:
3582: sub end_label {
3583: my ($target,$token) = @_;
3584: my $currentstring = '';
3585: if ($target eq 'web' || $target eq 'webgrade') {
3586: $currentstring = $token->[2];
3587: }
3588: return $currentstring;
3589: }
3590:
3591: #-- <layer> tag (end tag required)
3592: sub start_layer {
3593: my ($target,$token) = @_;
3594: my $currentstring = '';
3595: if ($target eq 'web' || $target eq 'webgrade') {
3596: $currentstring = $token->[4];
3597: }
3598: return $currentstring;
3599: }
3600:
3601: sub end_layer {
3602: my ($target,$token) = @_;
3603: my $currentstring = '';
3604: if ($target eq 'web' || $target eq 'webgrade') {
3605: $currentstring = $token->[2];
3606: }
3607: return $currentstring;
3608: }
3609:
3610: #-- <legend> tag (end tag required)
3611: sub start_legend {
3612: my ($target,$token) = @_;
3613: my $currentstring = '';
3614: if ($target eq 'web' || $target eq 'webgrade') {
3615: $currentstring = $token->[4];
3616: }
3617: return $currentstring;
3618: }
3619:
3620: sub end_legend {
3621: my ($target,$token) = @_;
3622: my $currentstring = '';
3623: if ($target eq 'web' || $target eq 'webgrade') {
3624: $currentstring = $token->[2];
3625: }
3626: return $currentstring;
3627: }
3628:
3629: #-- <link> tag (end tag forbidden)
3630: sub start_link {
3631: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3632: my $currentstring = '';
3633: if ($target eq 'web' || $target eq 'webgrade') {
3634: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3635: undef,1);
3636: &Apache::lonxml::extlink($href);
3637: $currentstring = $token->[4];
3638: }
3639: return $currentstring;
3640: }
3641:
3642: sub end_link {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web' || $target eq 'webgrade') {
3646: $currentstring = $token->[2];
3647: }
3648: return $currentstring;
3649: }
3650:
3651: #-- <marquee> tag (end tag optional)
3652: sub start_marquee {
3653: my ($target,$token) = @_;
3654: my $currentstring = '';
3655: if ($target eq 'web' || $target eq 'webgrade') {
3656: $currentstring = $token->[4];
3657: }
3658: return $currentstring;
3659: }
3660:
3661: sub end_marquee {
3662: my ($target,$token) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web' || $target eq 'webgrade') {
3665: $currentstring = $token->[2];
3666: }
3667: return $currentstring;
3668: }
3669:
3670: #-- <multicol> tag (end tag required)
3671: sub start_multicol {
3672: my ($target,$token) = @_;
3673: my $currentstring = &end_p(); # Close any pending <p>
3674: if ($target eq 'web' || $target eq 'webgrade') {
3675: $currentstring .= $token->[4];
3676: }
3677: return $currentstring;
3678: }
3679:
3680: sub end_multicol {
3681: my ($target,$token) = @_;
3682: my $currentstring = '';
3683: if ($target eq 'web' || $target eq 'webgrade') {
3684: $currentstring = $token->[2];
3685: }
3686: return $currentstring;
3687: }
3688:
3689: #-- <nobr> tag (end tag required)
3690: sub start_nobr {
3691: my ($target,$token) = @_;
3692: my $currentstring = '';
3693: if ($target eq 'web' || $target eq 'webgrade') {
3694: $currentstring = $token->[4];
3695: } elsif ($target eq 'tex') {
3696: $currentstring='\mbox{';
3697: }
3698: return $currentstring;
3699: }
3700:
3701: sub end_nobr {
3702: my ($target,$token) = @_;
3703: my $currentstring = '';
3704: if ($target eq 'web' || $target eq 'webgrade') {
3705: $currentstring = $token->[2];
3706: } elsif ($target eq 'tex') {
3707: $currentstring='}';
3708: }
3709: return $currentstring;
3710: }
3711:
3712: #-- <noembed> tag (end tag required)
3713: sub start_noembed {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web' || $target eq 'webgrade') {
3717: $currentstring = $token->[4];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: sub end_noembed {
3723: my ($target,$token) = @_;
3724: my $currentstring = '';
3725: if ($target eq 'web' || $target eq 'webgrade') {
3726: $currentstring = $token->[2];
3727: }
3728: return $currentstring;
3729: }
3730:
3731: #-- <noframes> tag (end tag required)
3732: sub start_noframes {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[4];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: sub end_noframes {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web' || $target eq 'webgrade') {
3745: $currentstring = $token->[2];
3746: }
3747: return $currentstring;
3748: }
3749:
3750: #-- <nolayer> tag (end tag required)
3751: sub start_nolayer {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[4];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: sub end_nolayer {
3761: my ($target,$token) = @_;
3762: my $currentstring = '';
3763: if ($target eq 'web' || $target eq 'webgrade') {
3764: $currentstring = $token->[2];
3765: }
3766: return $currentstring;
3767: }
3768:
3769: #-- <noscript> tag (end tag required)
3770: sub start_noscript {
3771: my ($target,$token) = @_;
3772: my $currentstring = '';
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring = $token->[4];
3775: }
3776: return $currentstring;
3777: }
3778:
3779: sub end_noscript {
3780: my ($target,$token) = @_;
3781: my $currentstring = '';
3782: if ($target eq 'web' || $target eq 'webgrade') {
3783: $currentstring = $token->[2];
3784: }
3785: return $currentstring;
3786: }
3787:
3788: #-- <object> tag (end tag required)
3789: sub start_object {
3790: my ($target,$token) = @_;
3791: my $currentstring = '';
3792: if ($target eq 'web' || $target eq 'webgrade') {
3793: $currentstring = $token->[4];
3794: }
3795: return $currentstring;
3796: }
3797:
3798: sub end_object {
3799: my ($target,$token) = @_;
3800: my $currentstring = '';
3801: if ($target eq 'web' || $target eq 'webgrade') {
3802: $currentstring = $token->[2];
3803: }
3804: return $currentstring;
3805: }
3806:
3807: #-- <optgroup> tag (end tag required)
3808: sub start_optgroup {
3809: my ($target,$token) = @_;
3810: my $currentstring = '';
3811: if ($target eq 'web' || $target eq 'webgrade') {
3812: $currentstring = $token->[4];
3813: }
3814: return $currentstring;
3815: }
3816:
3817: sub end_optgroup {
3818: my ($target,$token) = @_;
3819: my $currentstring = '';
3820: if ($target eq 'web' || $target eq 'webgrade') {
3821: $currentstring = $token->[2];
3822: }
3823: return $currentstring;
3824: }
3825:
3826: #-- <samp> tag (end tag required)
3827: sub start_samp {
3828: my ($target,$token) = @_;
3829: my $currentstring = '';
3830: if ($target eq 'web' || $target eq 'webgrade') {
3831: $currentstring = $token->[4];
3832: } elsif ($target eq 'tex') {
3833: $currentstring='\texttt{';
3834: }
3835: return $currentstring;
3836: }
3837:
3838: sub end_samp {
3839: my ($target,$token) = @_;
3840: my $currentstring = '';
3841: if ($target eq 'web' || $target eq 'webgrade') {
3842: $currentstring = $token->[2];
3843: } elsif ($target eq 'tex') {
3844: $currentstring='}';
3845: }
3846: return $currentstring;
3847: }
3848:
3849: #-- <server> tag
3850: sub start_server {
3851: my ($target,$token) = @_;
3852: my $currentstring = '';
3853: if ($target eq 'web' || $target eq 'webgrade') {
3854: $currentstring = $token->[4];
3855: }
3856: return $currentstring;
3857: }
3858:
3859: sub end_server {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[2];
3864: }
3865: return $currentstring;
3866: }
3867:
3868: #-- <spacer> tag (end tag forbidden)
3869: sub start_spacer {
3870: my ($target,$token) = @_;
3871: my $currentstring = &end_p(); # Close off any open <p> tag.
3872: if ($target eq 'web' || $target eq 'webgrade') {
3873: $currentstring .= $token->[4];
3874: }
3875: return $currentstring;
3876: }
3877:
3878: sub end_spacer {
3879: my ($target,$token) = @_;
3880: my $currentstring = '';
3881: if ($target eq 'web' || $target eq 'webgrade') {
3882: $currentstring = $token->[2];
3883: }
3884: return $currentstring;
3885: }
3886:
3887: #-- <span> tag (end tag required)
3888: sub start_span {
3889: my ($target,$token) = @_;
3890: my $currentstring = '';
3891: if ($target eq 'web' || $target eq 'webgrade') {
3892: $currentstring = $token->[4];
3893: }
3894: return $currentstring;
3895: }
3896:
3897: sub end_span {
3898: my ($target,$token) = @_;
3899: my $currentstring = '';
3900: if ($target eq 'web' || $target eq 'webgrade') {
3901: $currentstring = $token->[2];
3902: }
3903: return $currentstring;
3904: }
3905:
3906: #-- <tbody> tag (end tag optional)
3907: sub start_tbody {
3908: my ($target,$token) = @_;
3909: my $currentstring = '';
3910: if ($target eq 'web' || $target eq 'webgrade') {
3911: $currentstring = $token->[4];
3912: }
3913: if ($target eq 'tex') {
3914: # TODO: Ensure this tag is within a table:
3915:
3916: my $table = $Apache::londefdef::table[-1];
3917: $table->start_body();
3918: }
3919: return $currentstring;
3920: }
3921:
3922: sub end_tbody {
3923: my ($target,$token) = @_;
3924: my $currentstring = '';
3925: if ($target eq 'web' || $target eq 'webgrade') {
3926: $currentstring = $token->[2];
3927: }
3928: if($target eq 'tex') {
3929: # TODO: Ensure this tag is within a table:
3930:
3931: my $table = $Apache::londefdef::table[-1];
3932: $table->end_body();
3933: }
3934: return $currentstring;
3935: }
3936:
3937: #-- <tfoot> tag (end tag optional)
3938: sub start_tfoot {
3939: my ($target,$token) = @_;
3940: my $currentstring = '';
3941: if ($target eq 'web' || $target eq 'webgrade') {
3942: $currentstring = $token->[4];
3943: }
3944: if ($target eq 'tex') {
3945: # TODO: ensure this is within a table tag.
3946: my $table = $Apache::londefdef::table[-1];
3947: $table->start_foot();
3948: }
3949: return $currentstring;
3950: }
3951:
3952: sub end_tfoot {
3953: my ($target,$token) = @_;
3954: my $currentstring = '';
3955: if ($target eq 'web' || $target eq 'webgrade') {
3956: $currentstring = $token->[2];
3957: }
3958: if ($target eq 'tex') {
3959: # TODO: Ensure this is in side a table
3960: my $table = $Apache::londefdef::table[-1];
3961: $table->end_foot();
3962: }
3963: return $currentstring;
3964: }
3965:
3966: #-- <thead> tag (end tag optional)
3967: sub start_thead {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[4];
3972: }
3973: if ($target eq 'tex') {
3974: # Assume we're in a table... TODO: Verify that and ignore tag if not.
3975: my $table = $Apache::londefdef::table[-1];
3976: $table->start_head();
3977: }
3978: return $currentstring;
3979: }
3980:
3981: sub end_thead {
3982: my ($target,$token) = @_;
3983: my $currentstring = '';
3984: if ($target eq 'web' || $target eq 'webgrade') {
3985: $currentstring = $token->[2];
3986: }
3987: if ($target eq 'tex') {
3988: # TODO: Verify we are in a table and ignore tag if not.
3989:
3990: my $table = $Apache::londefdef::table[-1];
3991: $table->end_head();
3992: }
3993: return $currentstring;
3994: }
3995:
3996: #-- <var> tag
3997: sub start_var {
3998: my ($target,$token) = @_;
3999: my $currentstring = '';
4000: if ($target eq 'web' || $target eq 'webgrade') {
4001: $currentstring = $token->[4];
4002: } elsif ($target eq 'tex') {
4003: $currentstring = '\textit{';
4004: }
4005: return $currentstring;
4006: }
4007:
4008: sub end_var {
4009: my ($target,$token) = @_;
4010: my $currentstring = '';
4011: if ($target eq 'web' || $target eq 'webgrade') {
4012: $currentstring = $token->[2];
4013: } elsif ($target eq 'tex') {
4014: $currentstring = '}';
4015: }
4016: return $currentstring;
4017: }
4018:
4019: #-- <wbr> tag (end tag forbidden)
4020: sub start_wbr {
4021: my ($target,$token) = @_;
4022: my $currentstring = '';
4023: if ($target eq 'web' || $target eq 'webgrade') {
4024: $currentstring = $token->[4];
4025: }
4026: return $currentstring;
4027: }
4028:
4029: sub end_wbr {
4030: my ($target,$token) = @_;
4031: my $currentstring = '';
4032: if ($target eq 'web' || $target eq 'webgrade') {
4033: $currentstring = $token->[2];
4034: }
4035: return $currentstring;
4036: }
4037:
4038: #-- <hideweboutput> tag
4039: sub start_hideweboutput {
4040: my ($target,$token) = @_;
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: &Apache::lonxml::startredirection();
4043: }
4044: return '';
4045: }
4046:
4047: sub end_hideweboutput {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = &Apache::lonxml::endredirection();
4052: }
4053: return '';
4054: }
4055:
4056:
4057: sub image_replication {
4058: my $src = shift;
4059: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4060: #replicates eps or ps
4061: my $epssrc = my $pssrc = $src;
4062: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4063: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4064: if (not -e $epssrc && not -e $pssrc) {
4065: my $result=&Apache::lonnet::repcopy($epssrc);
4066: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4067: }
4068: return '';
4069: }
4070:
4071:
4072:
4073: sub resize_image {
4074: my ($height_param, $width_param, $scaling,
4075: $parstack, $safeeval, $depth, $cis) = @_;
4076:
4077: # First apply the scaling...
4078:
4079: $height_param = $height_param * $scaling;
4080: $width_param = $width_param * $scaling;
4081:
4082: #do we have any specified LaTeX size of the picture?
4083: my $toget='TeXwidth';
4084: if ($cis) {
4085: $toget=lc($toget);
4086: }
4087: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4088: $safeeval,$depth,$cis);
4089: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4090: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4091: $safeeval,$depth,$cis);
4092: #do we have any specified web size of the picture?
4093: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4094: $depth,1);
4095: if ($TeXwidth) {
4096: my $old_width_param=$width_param;
4097: if ($TeXwidth=~/(\d+)\s*\%/) {
4098: $width_param = $1*$env{'form.textwidth'}/100;
4099: } else {
4100: $width_param = $TeXwidth;
4101: }
4102: if ($TeXheight) {
4103: $height_param = $TeXheight;
4104: } elsif ($old_width_param) {
4105: $height_param=$TeXwidth/$old_width_param*$height_param;
4106: }
4107: } elsif ($TeXheight) {
4108: $height_param = $TeXheight;
4109: if ($height_param) {
4110: $width_param = $TeXheight/$height_param*$width_param;
4111: }
4112: } elsif ($width) {
4113: my $old_width_param=$width_param;
4114: $width_param = $width*$scaling;
4115: if ($old_width_param) {
4116: $height_param=$width_param/$old_width_param*$height_param;
4117: }
4118: }
4119: if ($width_param > $env{'form.textwidth'}) {
4120: my $old_width_param=$width_param;
4121: $width_param =0.95*$env{'form.textwidth'};
4122: if ($old_width_param) {
4123: $height_param=$width_param/$old_width_param*$height_param;
4124: }
4125: }
4126:
4127: return ($height_param, $width_param);
4128: }
4129:
4130: sub image_size {
4131: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4132:
4133: #size of image from gif/jpg/jpeg/png
4134: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4135: if (-e $ressrc) {
4136: $src = $ressrc;
4137: }
4138: my $image = Image::Magick->new;
4139: my $current_figure = $image->Read($src);
4140: my $width_param = $image->Get('width');
4141: my $height_param = $image->Get('height');
4142: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4143: undef($image);
4144:
4145: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4146: $scaling, $parstack, $safeeval,
4147: $depth, $cis);
4148:
4149: return ($height_param, $width_param);
4150: }
4151:
4152: sub image_width {
4153: my ($height, $width) = &image_size(@_);
4154: return $width;
4155: }
4156: # Not yet 100% sure this is correct in all circumstances..
4157: # due to my uncertainty about mods to image_size.
4158: #
4159: sub image_height {
4160: my ($height, $width) = &image_size(@_);
4161: return $height;
4162: }
4163:
4164: sub get_eps_image {
4165: my ($src)=@_;
4166: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4167:
4168: # In order to prevent the substitution of the alt text, we need to
4169: # be sure the orig_src file is on system now so:
4170:
4171: if (! -e $orig_src) {
4172: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4173: }
4174: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4175: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4176: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4177: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4178: &Apache::lonxml::debug("Filelocation gives: $src");
4179: if (! -e $src) {
4180: &Apache::lonxml::debug("$src does not exist");
4181: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4182: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4183: #if replication failed try to find ps file
4184: $src=~s/\.eps$/\.ps/;
4185: &Apache::lonxml::debug("Now looking for $src");
4186: #if no ps file try to replicate it.
4187: my $didrepcopy = &Apache::lonnet::repcopy($src);
4188: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4189: if ( (not -e $src) ||
4190: ($didrepcopy ne 'ok')) {
4191: &Apache::lonxml::debug("Failed to find or replicate $src");
4192:
4193: #if replication failed try to produce eps file dynamically
4194: $src=~s/\.ps$/\.eps/;
4195: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4196: my $newsrc=$orig_src;
4197: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4198: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4199: print FILE ("$newsrc\n");
4200: close(FILE);
4201: }
4202: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4203: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4204: if ($sext ne "") { # Put the ext. back in to uniquify.
4205: $src =~ s/\.eps$/$sext.eps/;
4206: }
4207:
4208: }
4209:
4210: }
4211: } else {
4212: # If the postscript file has spaces in its name,
4213: # LaTeX will gratuitiously vomit. Therefore
4214: # queue such files for copy with " " replaced by "_".
4215: # printout.pm will know them by their .ps or .eps extensions.
4216: my $newsrc = $orig_src;
4217: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4218: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4219: print FILE "$src\n";
4220: close FILE;
4221: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4222: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4223: }
4224: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4225: $path =~ s/ /\_/g;
4226: $file =~ s/ /\_/g;
4227: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4228: return ($path.'/',$file);
4229: }
4230:
4231: sub eps_generation {
4232: my ($src,$file,$width_param) = @_;
4233: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4234: if (open(my $tmpfile,">>$filename")) {
4235: print $tmpfile "$src\n";
4236: close($tmpfile);
4237: }
4238: my $newsrc = $src;
4239: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4240: $newsrc=~s{/home/httpd/html/res}{};
4241: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4242: $newsrc=~s{/\./}{/};
4243: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4244: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4245: $newsrc=~s{/home/httpd/lonUsers}{};
4246: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4247: }
4248: if ($newsrc=~m{/userfiles/}) {
4249: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4250: } else {
4251: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4252: }
4253: }
4254:
4255: sub file_path {
4256: my $src=shift;
4257: my ($file,$path);
4258: if ($src =~ m!(.*)/([^/]*)$!) {
4259: $file = $2;
4260: $path = $1.'/';
4261: }
4262: return $file,$path;
4263: }
4264:
4265:
4266: sub recalc {
4267: my $argument = shift;
4268: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4269: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4270: my $value=$1;
4271: my $units=$2;
4272: if ($units eq 'cm') {
4273: $value*=10;
4274: } elsif ($units eq 'in') {
4275: $value*=25.4;
4276: } elsif ($units eq 'pc') {
4277: $value*=(25.4*12/72.27);
4278: } elsif ($units eq 'pt') {
4279: $value*=(25.4/72.27);
4280: }
4281: return $value.' mm';
4282: }
4283:
4284: sub LATEX_length {
4285: my $garbage=shift;
4286: $garbage=~s/^\s+$//;
4287: $garbage=~s/^\s+(\S.*)/$1/;#space before
4288: $garbage=~s/(.*\S)\s+$/$1/;#space after
4289: $garbage=~s/(\s)+/$1/;#only one space
4290: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4291: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4292: $garbage=~s/([^\\])\$/$1/g;#$
4293: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4294: $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;
4295: $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;
4296: $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;
4297: $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;
4298: $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;
4299: $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;
4300: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4301: #remove some other LaTeX command
4302: $garbage=~s|\\(\w+)\\|\\|g;
4303: $garbage=~s|\\(\w+)(\s*)|$2|g;
4304: $garbage=~s|\+|11|g;
4305: my $value=length($garbage);
4306: return $value;
4307: }
4308:
4309:
4310: sub align_latex_image {
4311: my ($align, $latex_rendering, $image, $width, $height) = @_;
4312: my $currentstring; # The 1/2 wrapped image.
4313: my $closure; # The closure of the wrappage.
4314:
4315: # if it's none just return it back
4316: if ($latex_rendering eq 'none') {
4317: return ($image,'');
4318: }
4319:
4320: # If there's an alignment specification we need to honor it here.
4321: # For the horizontal alignments, we will also honor the
4322: # value of the latex specfication. The default is parbox,
4323: # and that's used for illegal values too.
4324: #
4325: # Even though we set a default alignment value, the user
4326: # could have given us an illegal value. In that case we
4327: # just use the default alignment of bottom..
4328: $currentstring = '';
4329: if ($align eq "top") {
4330: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4331: $closure = '}';
4332: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4333: my $offset = $height/2;
4334: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4335: $closure = '}';
4336: } elsif ($align eq "left") {
4337: if ($latex_rendering eq "parpic") {
4338: $currentstring .= '\parpic[l]{'.$image;
4339: $closure = '}';
4340: } elsif ($latex_rendering eq "parbox") {
4341: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4342: .$image;
4343: $closure = '\end{minipage}';
4344: } elsif ($latex_rendering eq "wrapfigure"
4345: || $latex_rendering ne 'none') { # wrapfig render
4346: $currentstring .=
4347: '\begin{wrapfigure}{l}{'.$width.'mm}'
4348: .'\scalebox{1.0}{'.$image;
4349: $closure = '}\end{wrapfigure}';
4350: }
4351: } elsif ($align eq "right") {
4352: if ($latex_rendering eq "parpic") {
4353: $currentstring .= '\parpic[r]{'.$image;
4354: $closure = '}';
4355: } elsif ($latex_rendering eq "parbox") {
4356: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4357: .$image;
4358: $closure = '\end{minipage}';
4359: } elsif ($latex_rendering eq "wrapfigure"
4360: || $latex_rendering ne 'none') { # wrapfig render
4361: $currentstring .=
4362: '\begin{wrapfigure}{r}{'.$width.'mm}'
4363: .'\scalebox{1.0}{'.$image;
4364: $closure = '}\end{wrapfigure}';
4365: }
4366: } else { # Bottom is also default.
4367: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4368: $currentstring .= "{$image";
4369: $closure = '}';
4370: }
4371: return ($currentstring, $closure);
4372: }
4373:
4374:
4375: sub is_inside_of {
4376: my ($tagstack, $tag) = @_;
4377: my @stack = @$tagstack;
4378: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4379: if ($stack[$i] eq $tag) {
4380: return 1;
4381: }
4382: }
4383: return 0;
4384: }
4385:
4386:
4387: #
4388: # This sub provides the typical LaTeX prefix matter for tex output:
4389: #
4390: sub latex_header {
4391: my ($mode) = @_;
4392: my $currentstring = '';
4393:
4394: $currentstring .=
4395: "\n% &Apache::lonxml::londefdef \n" .
4396: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4397: if (($env{'form.latex_type'}=~'batchmode') ||
4398: (!$env{'request.role.adv'}) ||
4399: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4400: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4401: '\renewcommand{\deg}{$^{\circ}$}'.
4402: '\usepackage{multirow}'.
4403: '\usepackage{longtable}'.
4404: '\usepackage{textcomp}'.
4405: '\usepackage{makeidx}'.
4406: '\usepackage[dvips]{graphicx}'.
4407: '\usepackage{wrapfig}'.
4408: '\usepackage{picins}'.
4409: '\usepackage[T1]{fontenc}'."\n".
4410: '\usepackage{lmodern}'."\n".
4411: '\usepackage[postscript]{ucs}'."\n".
4412: '\usepackage[utf8x]{inputenc}'."\n".
4413: '\usepackage{pifont}' ."\n".
4414: '\usepackage{latexsym}'."\n".
4415: '\usepackage{epsfig}'.
4416: "\\usepackage{xtab}\n".
4417: "\\usepackage{tabularx}\n".
4418: "\\usepackage{booktabs}\n".
4419: "\\usepackage{array}\n".
4420: "\\usepackage{colortbl}\n".
4421: "\\usepackage{xcolor}\n".
4422: '\usepackage{calc}'.
4423: '\usepackage{amsmath}'.
4424: '\usepackage{soul}',
4425: '\usepackage{amssymb}'.
4426: '\usepackage{amsfonts}'.
4427: '\usepackage{amsthm}'.
4428: '\usepackage{amscd}'
4429: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4430: '\usepackage[T1]{fontenc}'."\n".
4431: '\usepackage{lmodern}'."\n".
4432: '\usepackage[postscript]{ucs}'."\n".
4433: '\usepackage[utf8x]{inputenc}'."\n".
4434: '\usepackage{pifont}' . "\n";
4435:
4436: if($env{'form.pdfFormFields'} eq 'yes') {
4437: $currentstring .= '\usepackage{hyperref}'.
4438: '\usepackage{eforms}'.
4439: '\usepackage{tabularx}';
4440: }
4441:
4442: $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}}'.
4443: '\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}}';
4444: $currentstring .= '\begin{document}';
4445:
4446: return $currentstring;
4447:
4448: }
4449:
4450: =pod
4451:
4452: =head1 NAME
4453:
4454: Apache::londefdef.pm
4455:
4456: =head1 SYNOPSIS
4457:
4458: Tags Default Definition Module
4459:
4460: This is part of the LearningOnline Network with CAPA project
4461: described at http://www.lon-capa.org.
4462:
4463:
4464: =head1 NOTABLE SUBROUTINES
4465:
4466: =over
4467:
4468: =item start_hideweboutput()
4469:
4470: =item end_hideweboutput()
4471:
4472: =item image_replication()
4473:
4474: =item resize_image()
4475:
4476: Get correct sizing parameter for an image given
4477: it's initial ht. and wid. This allows sizing of
4478: images that are generated on-the-fly (e.g. gnuplot)
4479: as well as serving as a utility for image_size.
4480:
4481: Parameter:
4482: height_param
4483: width_param - Initial picture dimensions.
4484: scaling - A scale factor.
4485: parstack, - the current stack of tag attributes
4486: from the xml parser
4487: safeeval, - pointer to the safespace
4488: depth, - from what level in the stack to look for attributes
4489: (assumes -1 if unspecified)
4490: cis - look for attrubutes case insensitively
4491: (assumes false)
4492:
4493: Returns:
4494: height, width - new dimensions.
4495:
4496: =item image_size()
4497:
4498: =item image_width()
4499:
4500: =item image_height()
4501:
4502: =item get_eps_image()
4503:
4504: =item eps_generation()
4505:
4506: =item file_path()
4507:
4508: =item recalc()
4509:
4510: Converts a measurement in to mm from any of
4511: the other valid LaTeX units of measure.
4512: If the units of measure are missing from the
4513: parameter, it is assumed to be in and returned
4514: with mm units of measure
4515:
4516: =item LATEX_length()
4517:
4518: =item align_latex_image()
4519:
4520: Wrap image 'stuff' inside of the LaTeX required to implement
4521: alignment:
4522: align_tex_image(align, latex_rendering, image)
4523: Where:
4524: align - The HTML alignment specification.
4525: latex_rendering - rendering hint for latex.
4526: image - The LaTeX needed to insert the image itsef.
4527: width,height - dimensions of the image.
4528: Returns:
4529: The 1/2 wrapped image and the stuff required to close the
4530: wrappage. This allows e.g. randomlabel to insert more stuff
4531: into the closure.
4532:
4533:
4534: =item is_inside_of($tagstack, $tag)
4535: This sub returns true if the current state of Xml processing is inside of the tag.
4536: Parameters:
4537: tagstack - The tagstack from the parser.
4538: tag - The tag (without the <>'s.).
4539: Sample usage:
4540: if (is_inside_of($tagstack "table")) {
4541: I'm in a table....
4542: }
4543:
4544:
4545:
4546: =back
4547:
4548: =cut
4549:
4550:
4551: 1;
4552: __END__
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