1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.429 2011/04/05 10:33:15 foxr Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::loncommon();
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: } elsif ($target eq 'meta') {
387: unless (&Apache::lonxml::get_param
388: ('http-equiv',$parstack,$safeeval,undef,1)) {
389: my $name=$token->[2]->{'name'};
390: $name=~tr/A-Z/a-z/;
391: $name=~s/\s/\_/gs;
392: $name=~s/\W//gs;
393: if ($name) {
394: $currentstring='<'.$name;
395: my $display=&Apache::lonxml::get_param
396: ('display',$parstack,$safeeval,undef,1);
397: if ($display) {
398: $display=~s/\"/\'/g;
399: $currentstring.=' display="'.$display.'"';
400: }
401: $currentstring.='>'.
402: &Apache::lonxml::get_param
403: ('content',$parstack,$safeeval,undef,1).
404: '</'.$name.'>';
405: }
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=&HTML::Entities::encode($display,'<>&"');
410: $currentstring.='<'.$name.'.display>'.$display.
411: '</'.$name.'.display>';
412: }
413: }
414: } elsif ($target eq 'tex') {
415: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
416: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
417: if ((not defined $content) && (not defined $name)) {
418: &Apache::lonxml::startredirection();
419: }
420: } elsif ($target eq 'edit') {
421: $currentstring .= &Apache::edit::tag_start($target,$token);
422: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
423: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
424: $currentstring .= &Apache::edit::end_row();
425: } elsif ($target eq 'modified') {
426: my $constructtag =
427: &Apache::edit::get_new_args($token,$parstack,$safeeval,
428: 'name','content');
429: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
430: }
431: return $currentstring;
432: }
433:
434: sub end_meta {
435: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
436: my $currentstring = '';
437: if ($target eq 'web' || $target eq 'webgrade') {
438: my $args='';
439: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
440: if ($args ne '') {
441: $currentstring = $token->[4];
442: }
443: } elsif ($target eq 'tex') {
444: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
445: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
446: if ((not defined $content) && (not defined $name)) {
447: &Apache::lonxml::endredirection();
448: }
449: }
450: return $currentstring;
451: }
452:
453: sub insert_meta {
454: return '
455: <meta />';
456: }
457:
458: # accessrule
459: sub start_accessrule {
460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
461: my $currentstring = '';
462: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
463: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
464: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
465: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
466:
467: my ($dom,$crs,$sec,$separator);
468: if ($type eq 'user') {
469: ($dom,$crs,$sec)=split(m{/},$realm);
470: $crs = &LONCAPA::clean_username($crs);
471: $separator = '/';
472: } else {
473: ($dom,$crs,$sec)=split(/\_/,$realm);
474: $crs = &LONCAPA::clean_courseid($crs);
475: $separator = '_';
476: }
477: $dom = &LONCAPA::clean_domain($dom);
478:
479: $sec =~s/\W//;
480: $realm = $dom;
481: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
482: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
483: $role=~s/\W//g;
484:
485: if ($target eq 'web') {
486: my $args='';
487: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
488: if ($args eq '') {
489: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
490: } else {
491: $currentstring = $token->[4];
492: }
493: }
494: if ($target eq 'meta') {
495: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
496: }
497: return $currentstring;
498: }
499:
500: sub end_accessrule {
501: my ($target,$token,$tagstack,$parstack,$parser) = @_;
502: my $currentstring = '';
503: if ($target eq 'web') {
504: my $args='';
505: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
506: if ($args ne '') {
507: $currentstring = $token->[4];
508: }
509: }
510: return $currentstring;
511: }
512:
513: sub generate_css_links {
514: my $links;
515: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
516: if ($css_href =~ /\S/) {
517: &Apache::lonxml::extlink($css_href);
518: $links .=
519: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
520: }
521: return $links;
522: }
523:
524: #-- <body> tag (end tag required)
525: sub start_body {
526: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
527: my $currentstring = '';
528:
529: if ($target eq 'web' || $target eq 'webgrade') {
530: if ($Apache::lonhomework::parsing_a_problem) {
531: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
532: return '';
533: }
534:
535: if (&is_inside_of($tagstack, "head")) {
536: &end_head(@_);
537: }
538:
539: my $extra_head = &generate_css_links();
540:
541: # Breadcrumbs
542: &Apache::lonhtmlcommon::clear_breadcrumbs();
543: if ($env{'request.state'} eq 'construct') {
544: &Apache::lonhtmlcommon::add_breadcrumb({
545: 'text' => 'Construction Space',
546: 'href' => &Apache::loncommon::authorspace(),
547: });
548: &Apache::lonhtmlcommon::add_breadcrumb({
549: 'text' => 'HTML Editor',
550: 'href' => '',
551: });
552: # breadcrumbs (and tools) will be created
553: # in start_page->bodytag->innerregister
554: } else {
555: # FIXME Where are we?
556: }
557:
558: $currentstring =
559: &Apache::loncommon::start_page($Apache::londefdef::title,
560: $Apache::londefdef::head
561: .$extra_head,
562: {'add_entries' => $token->[2],
563: # 'no_title' => 1,
564: 'force_register' => 1});
565:
566: my $header = '';
567: if ($env{'request.state'} ne 'published' &&
568: $env{'request.state'} ne 'construct') {
569: $header=&Apache::lonmenu::constspaceform();
570: }
571: if ($env{'request.state'} ne 'published') {
572: $header.=&Apache::londefdef::edit_controls();
573: }
574: if ($env{'request.state'} eq 'construct') {
575: $currentstring.=&Apache::loncommon::head_subbox(
576: &Apache::loncommon::CSTR_pageheader()
577: .$header);
578: } elsif ($env{'request.state'} eq 'edit') {
579: $currentstring.=&Apache::loncommon::head_subbox($header);
580: }
581: $currentstring.=&Apache::lonxml::message_location();
582: } elsif ($target eq 'tex') {
583: $currentstring = ''; # '\begin{document}' is in header.
584: }
585:
586: return $currentstring;
587: }
588:
589: sub edit_controls {
590: my ($nochgview) = @_;
591: my $result .= '
592: <form method="post" action="">
593: <div class="LC_edit_problem_header">';
594: unless ($nochgview) {
595: $result .= '
596: <div class="LC_edit_problem_header_row1">'.
597: &Apache::lonxml::renderingoptions().'
598: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
599: </div>';
600: }
601: $result .= '
602: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
603: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
604: my $viewtext = &mt('Course View');
605: if (&Apache::loncommon::course_type() eq 'Community') {
606: $viewtext = &mt('Community View');
607: }
608: $result .= (' ' x 3).'<input type="button" value="'.
609: $viewtext.'" onclick="javascript:location.href=currentURL" />';
610: }
611: $result .= '</div>
612: </div>
613: </form>
614: ';
615: return $result;
616: }
617:
618: sub end_body {
619: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
620: my $currentstring = &end_p(); # Close off unclosed <p>
621: if ($target eq 'web' || $target eq 'webgrade') {
622: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
623: } elsif ($target eq 'tex') {
624: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
625: }
626: return $currentstring;
627: }
628:
629: # \begin{center} causes a new paragprah spacing that looks odd inside
630: # of a table cell. Same at the end of a \center but with a slightly
631: # larger space .. hence center_correction and center_end_correction.
632: #
633: sub center_correction { return '\vspace*{-6 mm}'; }
634: sub center_end_correction { return '\vspace*{-7 mm}'; }
635:
636: #-- <center> tag (end tag required)
637: sub start_center {
638: my ($target,$token,$tagstack) = @_;
639: my $currentstring = &end_p(); # Close off any prior para.
640: if ($target eq 'web' || $target eq 'webgrade') {
641: $currentstring .= $token->[4];
642: } elsif ($target eq 'tex') {
643: if (&is_inside_of($tagstack, "table")) {
644: $currentstring .= ¢er_correction();
645: }
646: $currentstring .= '\begin{center}';
647: }
648: return $currentstring;
649: }
650:
651: sub end_center {
652: my ($target,$token,$tagstack) = @_;
653: my $currentstring = '';
654: if ($target eq 'web' || $target eq 'webgrade') {
655: $currentstring = $token->[2];
656: } elsif ($target eq 'tex') {
657: $currentstring = '\end{center}';
658: if (&is_inside_of($tagstack, "table")) {
659: $currentstring .= ¢er_end_correction();
660: }
661: }
662: return $currentstring;
663: }
664:
665: #-- <b> tag (end tag required)
666: # NOTE: In TeX mode disables internal <p>
667: sub start_b {
668: my ($target,$token) = @_;
669: my $currentstring = '';
670: if ($target eq 'web' || $target eq 'webgrade') {
671: $currentstring = $token->[4];
672: } elsif ($target eq 'tex') {
673: &disable_para();
674: $currentstring .= '\textbf{';
675: }
676: return $currentstring;
677: }
678:
679: sub end_b {
680: my ($target,$token) = @_;
681: my $currentstring = '';
682: if ($target eq 'web' || $target eq 'webgrade') {
683: $currentstring = $token->[2];
684: } elsif ($target eq 'tex') {
685: &enable_para();
686: $currentstring = '}';
687: }
688: return $currentstring;
689: }
690:
691: #-- <strong> tag (end tag required)
692: # NOTE: in TeX mode disables internal <p>
693: sub start_strong {
694: my ($target,$token) = @_;
695: my $currentstring = '';
696: if ($target eq 'web' || $target eq 'webgrade') {
697: $currentstring = $token->[4];
698: } elsif ($target eq 'tex') {
699: &disable_para();
700: $currentstring = '\textbf{';
701: }
702: return $currentstring;
703: }
704:
705: sub end_strong {
706: my ($target,$token) = @_;
707: my $currentstring = '';
708: if ($target eq 'web' || $target eq 'webgrade') {
709: $currentstring = $token->[2];
710: } elsif ($target eq 'tex') {
711: &enable_para();
712: $currentstring = '}';
713: }
714: return $currentstring;
715: }
716:
717: #-- <h1> tag (end tag required)
718: sub start_h1 {
719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
720: my $currentstring = &end_p(); # Close off any prior para.
721: if ($target eq 'web' || $target eq 'webgrade') {
722: $currentstring .= $token->[4];
723: } elsif ($target eq 'tex') {
724: my $pre;
725: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
726: if ($align eq 'center') {
727: $pre='\begin{center}';
728: } elsif ($align eq 'left') {
729: $pre='\rlap{';
730: } elsif ($align eq 'right') {
731: $pre=' \hfill \llap{';
732: }
733: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
734: if (not defined $TeXsize) {$TeXsize="large";}
735: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
736: } elsif ($target eq 'meta') {
737: $currentstring.='<subject>';
738: &start_output($target);
739: }
740: return $currentstring;
741: }
742:
743: sub end_h1 {
744: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
745: my $currentstring = '';
746: if ($target eq 'web' || $target eq 'webgrade') {
747: $currentstring .= $token->[2];
748: } elsif ($target eq 'tex') {
749: my $post='\vskip 0 mm ';
750: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
751: if ($align eq 'center') {
752: $post='\end{center}';
753: } elsif ($align eq 'left') {
754: $post='} \hfill'.'\vskip 0 mm ';
755: } elsif ($align eq 'right') {
756: $post='}'.'\vskip 0 mm ';
757: }
758: $currentstring .= '}}'.$post;
759: } elsif ($target eq 'meta') {
760: &end_output($target);
761: $currentstring='</subject>';
762: }
763: return $currentstring;
764: }
765:
766: #-- <h2> tag
767: sub start_h2 {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
769: my $currentstring = &end_p(); # Close off any prior para.
770: if ($target eq 'web' || $target eq 'webgrade') {
771: $currentstring .= $token->[4];
772: } elsif ($target eq 'tex') {
773: my $pre;
774: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
775: if ($align eq 'center') {
776: $pre='\begin{center}';
777: } elsif ($align eq 'left') {
778: $pre='\rlap{';
779: } elsif ($align eq 'right') {
780: $pre=' \hfill \llap{';
781: }
782: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
783: if (not defined $TeXsize) {$TeXsize="large";}
784: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
785: }
786: return $currentstring;
787: }
788:
789: sub end_h2 {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
791: my $currentstring = '';
792: if ($target eq 'web' || $target eq 'webgrade') {
793: $currentstring .= $token->[2];
794: } elsif ($target eq 'tex') {
795: my $post='\vskip 0 mm ';
796: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
797: if ($align eq 'center') {
798: $post='\end{center}';
799: } elsif ($align eq 'left') {
800: $post='} \hfill'.'\vskip 0 mm ';
801: } elsif ($align eq 'right') {
802: $post='}'.'\vskip 0 mm ';
803: }
804: $currentstring .= '}}'.$post;
805: }
806: return $currentstring;
807: }
808:
809: #-- <h3> tag
810: sub start_h3 {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
812: my $currentstring = &end_p(); # Close off any prior para.
813: if ($target eq 'web' || $target eq 'webgrade') {
814: $currentstring .= $token->[4];
815: } elsif ($target eq 'tex') {
816: my $pre;
817: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
818: if ($align eq 'center') {
819: $pre='\begin{center}';
820: } elsif ($align eq 'left') {
821: $pre='\rlap{';
822: } elsif ($align eq 'right') {
823: $pre=' \hfill \llap{';
824: }
825: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
826: if (not defined $TeXsize) {$TeXsize="large";}
827: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
828: }
829: return $currentstring;
830: }
831:
832: sub end_h3 {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
834: my $currentstring = '';
835: if ($target eq 'web' || $target eq 'webgrade') {
836: $currentstring .= $token->[2];
837: } elsif ($target eq 'tex') {
838: my $post='\vskip 0 mm ';
839: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
840: if ($align eq 'center') {
841: $post='\end{center}';
842: } elsif ($align eq 'left') {
843: $post='} \hfill'.'\vskip 0 mm ';
844: } elsif ($align eq 'right') {
845: $post='}'.'\vskip 0 mm ';
846: }
847: $currentstring .= '}}'.$post;
848: }
849: return $currentstring;
850: }
851:
852: #-- <h4> tag
853: sub start_h4 {
854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
855: my $currentstring = &end_p(); # Close off any prior para.
856: if ($target eq 'web' || $target eq 'webgrade') {
857: $currentstring .= $token->[4];
858: } elsif ($target eq 'tex') {
859: my $pre;
860: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
861: if ($align eq 'center') {
862: $pre='\begin{center}';
863: } elsif ($align eq 'left') {
864: $pre='\rlap{';
865: } elsif ($align eq 'right') {
866: $pre=' \hfill \llap{';
867: }
868: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
869: if (not defined $TeXsize) {$TeXsize="large";}
870: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
871: }
872: return $currentstring;
873: }
874:
875: sub end_h4 {
876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
877: my $currentstring = '';
878: if ($target eq 'web' || $target eq 'webgrade') {
879: $currentstring .= $token->[2];
880: } elsif ($target eq 'tex') {
881: my $post='\vskip 0 mm ';
882: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
883: if ($align eq 'center') {
884: $post='\end{center}';
885: } elsif ($align eq 'left') {
886: $post='} \hfill'.'\vskip 0 mm ';
887: } elsif ($align eq 'right') {
888: $post='}'.'\vskip 0 mm ';
889: }
890: $currentstring .= '}}'.$post;
891: }
892: return $currentstring;
893: }
894:
895: #-- <h5> tag
896: sub start_h5 {
897: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
898: my $currentstring = &end_p(); # Close off any prior paras.
899: if ($target eq 'web' || $target eq 'webgrade') {
900: $currentstring .= $token->[4];
901: } elsif ($target eq 'tex') {
902: my $pre;
903: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
904: if ($align eq 'center') {
905: $pre='\begin{center}';
906: } elsif ($align eq 'left') {
907: $pre='\rlap{';
908: } elsif ($align eq 'right') {
909: $pre=' \hfill \llap{';
910: }
911: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
912: if (not defined $TeXsize) {$TeXsize="large";}
913: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
914: }
915: return $currentstring;
916: }
917:
918: sub end_h5 {
919: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
920: my $currentstring = '';
921: if ($target eq 'web' || $target eq 'webgrade') {
922: $currentstring .= $token->[2];
923: } elsif ($target eq 'tex') {
924: my $post='\vskip 0 mm ';
925: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
926: if ($align eq 'center') {
927: $post='\end{center}';
928: } elsif ($align eq 'left') {
929: $post='} \hfill'.'\vskip 0 mm ';
930: } elsif ($align eq 'right') {
931: $post='}'.'\vskip 0 mm ';
932: }
933: $currentstring .= '}}'.$post;
934: }
935: return $currentstring;
936: }
937:
938: #-- <h6> tag
939: sub start_h6 {
940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
941: my $currentstring = &end_p(); # Close off any prior paras.
942: if ($target eq 'web' || $target eq 'webgrade') {
943: $currentstring .= $token->[4];
944: } elsif ($target eq 'tex') {
945: my $pre;
946: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
947: if ($align eq 'center') {
948: $pre='\begin{center}';
949: } elsif ($align eq 'left') {
950: $pre='\rlap{';
951: } elsif ($align eq 'right') {
952: $pre=' \hfill \llap{';
953: }
954: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
955: if (not defined $TeXsize) {$TeXsize="large";}
956: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
957: }
958: return $currentstring;
959: }
960:
961: sub end_h6 {
962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
963: my $currentstring = '';
964: if ($target eq 'web' || $target eq 'webgrade') {
965: $currentstring .= $token->[2];
966: } elsif ($target eq 'tex') {
967: my $post='\vskip 0 mm ';
968: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
969: if ($align eq 'center') {
970: $post='\end{center}';
971: } elsif ($align eq 'left') {
972: $post='} \hfill'.'\vskip 0 mm ';
973: } elsif ($align eq 'right') {
974: $post='}'.'\vskip 0 mm ';
975: }
976: $currentstring .= '}}'.$post;
977: }
978: return $currentstring;
979: }
980:
981: #--- <cite> tag (end tag required)
982: sub start_cite {
983: my ($target,$token) = @_;
984: my $currentstring = '';
985: if ($target eq 'web' || $target eq 'webgrade') {
986: $currentstring .= $token->[4];
987: } elsif ($target eq 'tex') {
988: $currentstring .= '\textit{';
989: }
990: return $currentstring;
991: }
992:
993: sub end_cite {
994: my ($target,$token) = @_;
995: my $currentstring = '';
996: if ($target eq 'web' || $target eq 'webgrade') {
997: $currentstring .= $token->[2];
998: } elsif ($target eq 'tex') {
999: $currentstring .= '}';
1000: }
1001: return $currentstring;
1002: }
1003:
1004: #-- <i> tag (end tag required)
1005: sub start_i {
1006: my ($target,$token) = @_;
1007: my $currentstring = '';
1008: if ($target eq 'web' || $target eq 'webgrade') {
1009: $currentstring .= $token->[4];
1010: } elsif ($target eq 'tex') {
1011: $currentstring .= '\textit{';
1012: }
1013: return $currentstring;
1014: }
1015:
1016: sub end_i {
1017: my ($target,$token) = @_;
1018: my $currentstring = '';
1019: if ($target eq 'web' || $target eq 'webgrade') {
1020: $currentstring .= $token->[2];
1021: } elsif ($target eq 'tex') {
1022: $currentstring .= '}';
1023: }
1024: return $currentstring;
1025: }
1026:
1027: #-- <address> tag (end tag required)
1028: sub start_address {
1029: my ($target,$token) = @_;
1030: my $currentstring = '';
1031: if ($target eq 'web' || $target eq 'webgrade') {
1032: $currentstring .= $token->[4];
1033: } elsif ($target eq 'tex') {
1034: $currentstring .= '\textit{';
1035: }
1036: return $currentstring;
1037: }
1038:
1039: sub end_address {
1040: my ($target,$token) = @_;
1041: my $currentstring = '';
1042: if ($target eq 'web' || $target eq 'webgrade') {
1043: $currentstring .= $token->[2];
1044: } elsif ($target eq 'tex') {
1045: $currentstring .= '}';
1046: }
1047: return $currentstring;
1048: }
1049:
1050: #-- <dfn> tag (end tag required)
1051: sub start_dfn {
1052: my ($target,$token) = @_;
1053: my $currentstring = '';
1054: if ($target eq 'web' || $target eq 'webgrade') {
1055: $currentstring .= $token->[4];
1056: } elsif ($target eq 'tex') {
1057: $currentstring .= '\textit{';
1058: }
1059: return $currentstring;
1060: }
1061:
1062: sub end_dfn {
1063: my ($target,$token) = @_;
1064: my $currentstring = '';
1065: if ($target eq 'web' || $target eq 'webgrade') {
1066: $currentstring .= $token->[2];
1067: } elsif ($target eq 'tex') {
1068: $currentstring .= '}';
1069: }
1070: return $currentstring;
1071: }
1072:
1073: #-- <tt> tag (end tag required)
1074: sub start_tt {
1075: my ($target,$token) = @_;
1076: my $currentstring = '';
1077: if ($target eq 'web' || $target eq 'webgrade') {
1078: $currentstring .= $token->[4];
1079: } elsif ($target eq 'tex') {
1080: $currentstring .= '\texttt{';
1081: }
1082: return $currentstring;
1083: }
1084:
1085: sub end_tt {
1086: my ($target,$token) = @_;
1087: my $currentstring = '';
1088: if ($target eq 'web' || $target eq 'webgrade') {
1089: $currentstring .= $token->[2];
1090: } elsif ($target eq 'tex') {
1091: $currentstring .= '}';
1092: }
1093: return $currentstring;
1094: }
1095:
1096: #-- <kbd> tag (end tag required)
1097: sub start_kbd {
1098: my ($target,$token) = @_;
1099: my $currentstring = '';
1100: if ($target eq 'web' || $target eq 'webgrade') {
1101: $currentstring .= $token->[4];
1102: } elsif ($target eq 'tex') {
1103: $currentstring .= '\texttt{';
1104: }
1105: return $currentstring;
1106: }
1107:
1108: sub end_kbd {
1109: my ($target,$token) = @_;
1110: my $currentstring = '';
1111: if ($target eq 'web' || $target eq 'webgrade') {
1112: $currentstring .= $token->[2];
1113: } elsif ($target eq 'tex') {
1114: $currentstring .= '}';
1115: }
1116: return $currentstring;
1117: }
1118:
1119: #-- <code> tag (end tag required)
1120: sub start_code {
1121: my ($target,$token) = @_;
1122: my $currentstring = '';
1123: if ($target eq 'web' || $target eq 'webgrade') {
1124: $currentstring .= $token->[4];
1125: } elsif ($target eq 'tex') {
1126: $currentstring .= '\texttt{';
1127: }
1128: return $currentstring;
1129: }
1130:
1131: sub end_code {
1132: my ($target,$token) = @_;
1133: my $currentstring = '';
1134: if ($target eq 'web' || $target eq 'webgrade') {
1135: $currentstring .= $token->[2];
1136: } elsif ($target eq 'tex') {
1137: $currentstring .= '}';
1138: }
1139: return $currentstring;
1140: }
1141:
1142: #-- <em> tag (end tag required)
1143: sub start_em {
1144: my ($target,$token) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web' || $target eq 'webgrade') {
1147: $currentstring .= $token->[4];
1148: } elsif ($target eq 'tex') {
1149: $currentstring .= '\emph{';
1150: }
1151: return $currentstring;
1152: }
1153:
1154: sub end_em {
1155: my ($target,$token) = @_;
1156: my $currentstring = '';
1157: if ($target eq 'web' || $target eq 'webgrade') {
1158: $currentstring .= $token->[2];
1159: } elsif ($target eq 'tex') {
1160: $currentstring .= '}';
1161: }
1162: return $currentstring;
1163: }
1164:
1165: #-- <q> tag (end tag required)
1166: sub start_q {
1167: my ($target,$token) = @_;
1168: my $currentstring = '';
1169: if ($target eq 'web' || $target eq 'webgrade') {
1170: $currentstring .= $token->[4];
1171: } elsif ($target eq 'tex') {
1172: $currentstring .= '\emph{';
1173: }
1174: return $currentstring;
1175: }
1176:
1177: sub end_q {
1178: my ($target,$token) = @_;
1179: my $currentstring = '';
1180: if ($target eq 'web' || $target eq 'webgrade') {
1181: $currentstring .= $token->[2];
1182: } elsif ($target eq 'tex') {
1183: $currentstring .= '}';
1184: }
1185: return $currentstring;
1186: }
1187:
1188: # <p> is a bit strange since it does not require a closing </p>
1189: # However in latex, we must often output closing stuff to end
1190: # environments and {}'s etc. Therefore we do all the work
1191: # of figuring out the ending strings in the start tag processing,
1192: # and provide a mechanism to output the stop text external
1193: # to tag processing.
1194: #
1195: {
1196:
1197: my $closing_string = ''; # String required to close <p>
1198:
1199: # Some tags are <p> fragile meaning that <p> inside of them
1200: # does not work within TeX mode. This is managed via the
1201: # counter below:
1202: #
1203:
1204: my $para_disabled = 0;
1205:
1206: sub disable_para {
1207: $para_disabled++;
1208: }
1209: sub enable_para {
1210: $para_disabled--;
1211: }
1212:
1213:
1214: #-- <p> tag (end tag optional)
1215: #optional attribute - align="center|left|right"
1216: sub start_p {
1217: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1218: my $currentstring = '';
1219: if ($target eq 'web' || $target eq 'webgrade') {
1220: $currentstring .= &end_p(); # close off prior para if in progress.
1221: $currentstring .= $token->[4];
1222: if (! ($currentstring =~ /\//)) {
1223: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1224: }
1225: } elsif ($target eq 'tex' && !$para_disabled) {
1226:
1227: $currentstring .= &end_p(); # close off prior para if in progress.
1228: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1229: if ($align eq 'center') {
1230: $currentstring .='\begin{center}\par ';
1231: $closing_string = '\end{center}';
1232: if (&is_inside_of($tagstack, "table")) {
1233: $currentstring = ¢er_correction().$currentstring;
1234: }
1235: } elsif ($align eq 'right') {
1236: $currentstring.="\n".'{\flushright ';
1237: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1238: $closing_string= "}\n";
1239: } elsif ($align eq 'left') {
1240: $currentstring.= "\n".'{\flushleft ';
1241: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1242: $closing_string = "}\n";
1243: } else {
1244: $currentstring.='\par ';
1245: if (&is_inside_of($tagstack, 'table')) {
1246: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1247: } else {
1248: $closing_string = '\strut\\\\\strut ';
1249: }
1250: }
1251:
1252: }
1253: return $currentstring;
1254: }
1255: #
1256: # End paragraph processing just requires that we output the
1257: # closing string that was saved and blank it.
1258: sub end_p {
1259: # Note only 'tex' mode uses disable_para and enable_para
1260: # so we don't need to know the target in the check below:
1261:
1262: if (!$para_disabled) {
1263: my $current_string = $closing_string;
1264: $closing_string = ''; # Not in a para anymore.
1265: return $current_string;
1266: } else {
1267: return '';
1268: }
1269:
1270: }
1271: }
1272: #-- <br> tag (end tag forbidden)
1273: sub start_br {
1274: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1275: my $currentstring = '';
1276: if ($target eq 'web' || $target eq 'webgrade') {
1277: $currentstring .= $token->[4];
1278: } elsif ($target eq 'tex') {
1279: my @tempo=@$tagstack;
1280: my $signal=0;
1281: # Not going to factor this to is_inside_of since that would require
1282: # multiple stack traversals.
1283: #
1284: for (my $i=$#tempo;$i>=0;$i--) {
1285: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1286: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1287: $signal=1;
1288: }
1289: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1290: $signal = 1;
1291: }
1292: }
1293: if ($signal != 1) {
1294: $currentstring .= '\strut \\\\ \strut ';
1295: }
1296:
1297: }
1298: return $currentstring;
1299: }
1300:
1301: sub end_br {
1302: my ($target,$token) = @_;
1303: my $currentstring = '';
1304: if ($target eq 'web' || $target eq 'webgrade') {
1305: $currentstring .= $token->[2];
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <big> tag (end tag required)
1311: sub start_big {
1312: my ($target,$token) = @_;
1313: my $currentstring = '';
1314: if ($target eq 'web' || $target eq 'webgrade') {
1315: $currentstring .= $token->[4];
1316: } elsif ($target eq 'tex') {
1317: $currentstring .= '{\large ';
1318: }
1319: return $currentstring;
1320: }
1321:
1322: sub end_big {
1323: my ($target,$token) = @_;
1324: my $currentstring = '';
1325: if ($target eq 'web' || $target eq 'webgrade') {
1326: $currentstring .= $token->[2];
1327: } elsif ($target eq 'tex') {
1328: $currentstring .= '}';
1329: }
1330: return $currentstring;
1331: }
1332:
1333: #-- <small> tag (end tag required)
1334: sub start_small {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web' || $target eq 'webgrade') {
1338: $currentstring .= $token->[4];
1339: } elsif ($target eq 'tex') {
1340: $currentstring .= '{\footnotesize ';
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_small {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web' || $target eq 'webgrade') {
1349: $currentstring .= $token->[2];
1350: } elsif ($target eq 'tex') {
1351: $currentstring .= '}';
1352: }
1353: return $currentstring;
1354: }
1355:
1356: #-- <basefont> tag (end tag forbidden)
1357: sub start_basefont {
1358: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1359: my $currentstring = '';
1360: if ($target eq 'web' || $target eq 'webgrade') {
1361: $currentstring = $token->[4];
1362: } elsif ($target eq 'tex') {
1363: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1364: if (defined $basesize) {
1365: $currentstring = '{\\'.$basesize.' ';
1366: }
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_basefont {
1372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web' || $target eq 'webgrade') {
1375: $currentstring = $token->[4];
1376: } elsif ($target eq 'tex') {
1377: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1378: if (defined $basesize) {
1379: $currentstring = '}';
1380: }
1381: }
1382: return $currentstring;
1383: }
1384:
1385: #-- <font> tag (end tag required)
1386: sub start_font {
1387: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1388: my $currentstring = '';
1389: if ($target eq 'web' || $target eq 'webgrade') {
1390: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1391: $currentstring = $token->[4];
1392: } elsif ($target eq 'tex') {
1393: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1394: if (defined $fontsize) {
1395: $currentstring = '{\\'.$fontsize.' ';
1396: }
1397: }
1398: return $currentstring;
1399: }
1400:
1401: sub end_font {
1402: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1403: my $currentstring = '';
1404: if ($target eq 'web' || $target eq 'webgrade') {
1405: $currentstring = $token->[2];
1406: } elsif ($target eq 'tex') {
1407: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1408: if (defined $fontsize) {
1409: $currentstring = '}';
1410: }
1411: }
1412: return $currentstring;
1413: }
1414:
1415: #-- <strike> tag (end tag required)
1416: sub start_strike {
1417: my ($target,$token) = @_;
1418: my $currentstring = '';
1419: if ($target eq 'web' || $target eq 'webgrade') {
1420: $currentstring .= $token->[4];
1421: } elsif ($target eq 'tex') {
1422: &Apache::lonxml::startredirection();
1423: }
1424: return $currentstring;
1425: }
1426:
1427: sub end_strike {
1428: my ($target,$token) = @_;
1429: my $currentstring = '';
1430: if ($target eq 'web' || $target eq 'webgrade') {
1431: $currentstring .= $token->[2];
1432: } elsif ($target eq 'tex') {
1433: $currentstring=&Apache::lonxml::endredirection();
1434: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1435: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1436: $currentstring=~s/(\S)\s*$/$1\}/;
1437: }
1438: return $currentstring;
1439: }
1440:
1441: #-- <s> tag (end tag required)
1442: sub start_s {
1443: my ($target,$token) = @_;
1444: my $currentstring = '';
1445: if ($target eq 'web' || $target eq 'webgrade') {
1446: $currentstring .= $token->[4];
1447: } elsif ($target eq 'tex') {
1448: &Apache::lonxml::startredirection();
1449: }
1450: return $currentstring;
1451: }
1452:
1453: sub end_s {
1454: my ($target,$token) = @_;
1455: my $currentstring = '';
1456: if ($target eq 'web' || $target eq 'webgrade') {
1457: $currentstring .= $token->[2];
1458: } elsif ($target eq 'tex') {
1459: $currentstring=&Apache::lonxml::endredirection();
1460: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1461: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1462: $currentstring=~s/(\S)\s*$/$1\}/;
1463: }
1464: return $currentstring;
1465: }
1466:
1467: #-- <sub> tag (end tag required)
1468: sub start_sub {
1469: my ($target,$token) = @_;
1470: my $currentstring = '';
1471: if ($target eq 'web' || $target eq 'webgrade') {
1472: $currentstring .= $token->[4];
1473: } elsif ($target eq 'tex') {
1474: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1475: }
1476: return $currentstring;
1477: }
1478:
1479: sub end_sub {
1480: my ($target,$token) = @_;
1481: my $currentstring = '';
1482: if ($target eq 'web' || $target eq 'webgrade') {
1483: $currentstring .= $token->[2];
1484: } elsif ($target eq 'tex') {
1485: $currentstring .= '}}';
1486: }
1487: return $currentstring;
1488: }
1489:
1490: #-- <sup> tag (end tag required)
1491: sub start_sup {
1492: my ($target,$token) = @_;
1493: my $currentstring = '';
1494: if ($target eq 'web' || $target eq 'webgrade') {
1495: $currentstring .= $token->[4];
1496: } elsif ($target eq 'tex') {
1497: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1498: }
1499: return $currentstring;
1500: }
1501:
1502: sub end_sup {
1503: my ($target,$token) = @_;
1504: my $currentstring = '';
1505: if ($target eq 'web' || $target eq 'webgrade') {
1506: $currentstring .= $token->[2];
1507: } elsif ($target eq 'tex') {
1508: $currentstring .= '}}';
1509: }
1510: return $currentstring;
1511: }
1512:
1513: #-- <hr> tag (end tag forbidden)
1514: sub start_hr {
1515: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1516: my $currentstring = &end_p(); # End enclosing para.
1517: if ($target eq 'web' || $target eq 'webgrade') {
1518: $currentstring .= $token->[4];
1519: } elsif ($target eq 'tex') {
1520:
1521: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1522: #
1523: my $restart_sub = 0;
1524: my $restart_sup = 0;
1525:
1526: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1527: # using the start_ stop_ functions.. those tags only care about
1528: # $target.
1529:
1530: if (&is_inside_of($tagstack, "sub")) {
1531: $restart_sub = 1;
1532: $currentstring .= &end_sub($target, $token, $tagstack,
1533: $parstack, $parser, $safeeval);
1534: }
1535: if (&is_inside_of($tagstack, "sup")) {
1536: $restart_sup = 1;
1537: $currentstring .= &end_sup($target, $token, $tagstack,
1538: $parstack, $parser, $safeeval);
1539: }
1540:
1541: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1542: if (defined $LaTeXwidth) {
1543: if ($LaTeXwidth=~/^%/) {
1544: substr($LaTeXwidth,0,1)='';
1545: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1546: }
1547: } else {
1548: $LaTeXwidth ='0.9\textwidth';
1549: }
1550: my ($pre,$post);
1551: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1552: if (($align eq 'center') || (not defined $align)) {
1553: $pre=''; $post='';
1554: } elsif ($align eq 'left') {
1555: $pre='\rlap{'; $post='} \hfill';
1556: } elsif ($align eq 'right') {
1557: $pre=' \hfill \llap{'; $post='}';
1558: }
1559: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1560: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1561: # Turn stuff back on that we can't be inside of.
1562:
1563: if ($restart_sub) {
1564: $currentstring .= &start_sub($target, $token, $tagstack,
1565: $parstack, $parser, $safeeval);
1566: }
1567: if ($restart_sup) {
1568: $currentstring .= &start_sup($target, $token, $tagstack,
1569: $parstack, $parser, $safeeval);
1570: }
1571: }
1572: return $currentstring;
1573: }
1574:
1575: sub end_hr {
1576: my ($target,$token) = @_;
1577: my $currentstring = '';
1578: if ($target eq 'web' || $target eq 'webgrade') {
1579: $currentstring .= $token->[2];
1580: }
1581: return $currentstring;
1582: }
1583:
1584: #-- <div> tag (end tag required)
1585: {
1586:
1587: # Since div can be nested, the stack below is used
1588: # in 'tex' mode to store the ending strings
1589: # for the div stack.
1590:
1591: my @div_end_stack;
1592:
1593: sub start_div {
1594: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1595: my $currentstring = &end_p(); # Close enclosing para.
1596: if ($target eq 'web' || $target eq 'webgrade') {
1597: $currentstring .= $token->[4];
1598: }
1599: if ($target eq 'tex') {
1600: # 4 possible alignments: left, right, center, and -missing-.
1601: # If inside a table row, we must let the table logic
1602: # do the alignment, however.
1603: #
1604:
1605: my $endstring = '';
1606:
1607: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1608: $safeeval, undef, 1));
1609: if ($align eq 'center') {
1610: $currentstring .= '\begin{center}';
1611: $endstring = '\end{center}';
1612: if (&is_inside_of($tagstack, "table")) {
1613: $currentstring = ¢er_correction().$currentstring;
1614: $endstring .= ¢er_end_correction();
1615: }
1616: }
1617: elsif ($align eq 'right') {
1618: $currentstring .= '\begin{flushright}';
1619: $endstring .= '\end{flushright}';
1620: } elsif ($align eq 'left') {
1621: $currentstring .= '\begin{flushleft}';
1622: $endstring = '\end{flushleft}';
1623: } else {
1624:
1625: }
1626: $currentstring .= "\n"; # For human readability.
1627: $endstring = "\n$endstring\n"; # For human readability
1628: push(@div_end_stack, $endstring);
1629: }
1630: return $currentstring;
1631: }
1632:
1633: sub end_div {
1634: my ($target,$token) = @_;
1635: my $currentstring = '';
1636: if ($target eq 'web' || $target eq 'webgrade') {
1637: $currentstring .= $token->[2];
1638: }
1639: if ($target eq 'tex') {
1640: my $endstring = pop @div_end_stack;
1641: $currentstring .= $endstring;
1642: }
1643: return $currentstring;
1644: }
1645: }
1646:
1647: #-- <a> tag (end tag required)
1648: sub start_a {
1649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1650: my $currentstring = '';
1651: if ($target eq 'web' || $target eq 'webgrade') {
1652: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1653: undef,1);
1654: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1655: if ($href =~ /\S/) {
1656: if ($href !~ m{^https?://}) {
1657: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1658: my $linkurl;
1659: if ($href =~ m{^/uploaded/}) {
1660: $linkurl = $href;
1661: } elsif ($href =~ m{^[^/]}) {
1662: my $path = $url;
1663: $path =~ s{[^/]*$}{};
1664: $linkurl = $path.$href;
1665: }
1666: if ($linkurl =~ m{^/uploaded/}) {
1667: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1668: if (&Apache::lonnet::is_on_map($url)) {
1669: &Apache::lonxml::extlink($linkurl);
1670: }
1671: }
1672: }
1673: }
1674: }
1675: }
1676: return $currentstring;
1677: }
1678:
1679: sub end_a {
1680: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1681: my $currentstring = '';
1682: if ($target eq 'web' || $target eq 'webgrade') {
1683: $currentstring .= $token->[2];
1684: }
1685: if ($target eq 'tex') {
1686: my $href =
1687: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1688: my $name =
1689: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1690: my $uriprint =
1691: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1692: my $anchorprint =
1693: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1694: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1695: $href =~ s/([^\\])%/$1\\\%/g;
1696: # Substitute special symbols... and allow line breaks at each /
1697: #
1698: $href = &Apache::lonxml::latex_special_symbols($href);
1699: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1700: $currentstring .= ' ({\tt URI:'.$href.'})';
1701: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1702: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1703: } else {
1704: $currentstring.='';
1705: }
1706: }
1707: return $currentstring;
1708: }
1709:
1710: #-- <li> tag (end tag optional)
1711: sub start_li {
1712: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1713: my $currentstring = '';
1714: if ($target eq 'web' || $target eq 'webgrade') {
1715: $currentstring = $token->[4];
1716: } elsif ($target eq 'tex') {
1717: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1718: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1719: #FIXME need to support types i and I
1720: if ($type=~/disc/) {
1721: $currentstring .= ' \item[$\bullet$] ';
1722: } elsif ($type=~/circle/) {
1723: $currentstring .= ' \item[$\circ$] ';
1724: } elsif ($type=~/square/) {
1725: $currentstring .= ' \item[$\diamond$] ';
1726: } elsif ($type eq '1') {
1727: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1728: } elsif ($type eq 'A') {
1729: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1730: } elsif ($type eq 'a') {
1731: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1732: } elsif ($value ne '') {
1733: $currentstring .= ' \item['.$value.'] ';
1734: } else {
1735: $currentstring .= ' \item ';
1736: }
1737: $Apache::londefdef::list_index++;
1738: }
1739: return $currentstring;
1740: }
1741:
1742: sub end_li {
1743: my ($target,$token) = @_;
1744: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1745: if ($target eq 'web' || $target eq 'webgrade') {
1746: $currentstring .= $token->[2];
1747: }
1748: return $currentstring;
1749: }
1750:
1751: #-- <u> tag (end tag required)
1752: sub start_u {
1753: my ($target,$token) = @_;
1754: my $currentstring = '';
1755: if ($target eq 'web' || $target eq 'webgrade') {
1756: $currentstring .= $token->[4];
1757: } elsif ($target eq 'tex') {
1758: &Apache::lonxml::startredirection();
1759: }
1760: return $currentstring;
1761: }
1762:
1763: sub end_u {
1764: my ($target,$token) = @_;
1765: my $currentstring = '';
1766: if ($target eq 'web' || $target eq 'webgrade') {
1767: $currentstring .= $token->[2];
1768: } elsif ($target eq 'tex') {
1769: $currentstring=&Apache::lonxml::endredirection();
1770: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1771: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1772: $currentstring=~s/(\S)\s*$/$1\}/;
1773: }
1774: return $currentstring;
1775: }
1776:
1777: #-- <ul> tag (end tag required)
1778: sub start_ul {
1779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1780: my $currentstring = &end_p(); # Close off enclosing list.
1781: if ($target eq 'web' || $target eq 'webgrade') {
1782: $currentstring .= $token->[4];
1783: } elsif ($target eq 'tex') {
1784: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1785: $Apache::londefdef::list_index=0;
1786: if ($TeXtype eq 'disc') {
1787: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1788: '\renewcommand{\labelitemii}{$\bullet$}'.
1789: '\renewcommand{\labelitemiii}{$\bullet$}'.
1790: '\renewcommand{\labelitemiv}{$\bullet$}';
1791: } elsif ($TeXtype eq 'circle') {
1792: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1793: '\renewcommand{\labelitemii}{$\circ$}'.
1794: '\renewcommand{\labelitemiii}{$\circ$}'.
1795: '\renewcommand{\labelitemiv}{$\circ$}';
1796: } elsif ($TeXtype eq 'square') {
1797: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1798: '\renewcommand{\labelitemii}{$\diamond$}'.
1799: '\renewcommand{\labelitemiii}{$\diamond$}'.
1800: '\renewcommand{\labelitemiv}{$\diamond$}';
1801: }
1802: $currentstring .= '\strut \begin{itemize}';
1803: }
1804: return $currentstring;
1805: }
1806:
1807: sub end_ul {
1808: my ($target,$token) = @_;
1809: my $currentstring = '';
1810: if ($target eq 'web' || $target eq 'webgrade') {
1811: $currentstring = $token->[2];
1812: } elsif ($target eq 'tex') {
1813: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1814: '\renewcommand{\labelitemii}{$\bullet$}'.
1815: '\renewcommand{\labelitemiii}{$\bullet$}'.
1816: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1817: }
1818: return $currentstring;
1819: }
1820:
1821: #-- <menu> tag (end tag required)
1822: sub start_menu {
1823: my ($target,$token) = @_;
1824: my $currentstring = '';
1825: if ($target eq 'web' || $target eq 'webgrade') {
1826: $currentstring = $token->[4];
1827: } elsif ($target eq 'tex') {
1828: $currentstring = " \\begin{itemize} ";
1829: }
1830: return $currentstring;
1831: }
1832:
1833: sub end_menu {
1834: my ($target,$token) = @_;
1835: my $currentstring = '';
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring = $token->[2];
1838: } elsif ($target eq 'tex') {
1839: $currentstring = " \\end{itemize}";
1840: }
1841: return $currentstring;
1842: }
1843:
1844: #-- <dir> tag (end tag required)
1845: sub start_dir {
1846: my ($target,$token) = @_;
1847: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1848: if ($target eq 'web' || $target eq 'webgrade') {
1849: $currentstring .= $token->[4];
1850: } elsif ($target eq 'tex') {
1851: $currentstring .= " \\begin{itemize} ";
1852: }
1853: return $currentstring;
1854: }
1855:
1856: sub end_dir {
1857: my ($target,$token) = @_;
1858: my $currentstring = '';
1859: if ($target eq 'web' || $target eq 'webgrade') {
1860: $currentstring = $token->[2];
1861: } elsif ($target eq 'tex') {
1862: $currentstring = " \\end{itemize}";
1863: }
1864: return $currentstring;
1865: }
1866:
1867: #-- <ol> tag (end tag required)
1868: sub start_ol {
1869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1870: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1871: if ($target eq 'web' || $target eq 'webgrade') {
1872: $currentstring .= $token->[4];
1873: } elsif ($target eq 'tex') {
1874: $Apache::londefdef::list_index=0;
1875: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1876: if ($type eq '1') {
1877: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1878: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1879: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1880: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1881: } elsif ($type eq 'A') {
1882: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1883: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1884: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1885: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1886: } elsif ($type eq 'a') {
1887: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1888: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1889: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1890: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1891: } elsif ($type eq 'i') {
1892: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1893: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1894: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1895: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1896: } elsif ($type eq 'I') {
1897: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1898: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1899: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1900: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1901: }
1902: $currentstring .= '\strut \begin{enumerate}';
1903: }
1904: return $currentstring;
1905: }
1906:
1907: sub end_ol {
1908: my ($target,$token) = @_;
1909: my $currentstring = '';
1910: if ($target eq 'web' || $target eq 'webgrade') {
1911: $currentstring = $token->[2];
1912: } elsif ($target eq 'tex') {
1913: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1914: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1915: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1916: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1917: }
1918: return $currentstring;
1919: }
1920:
1921: #-- <dl> tag (end tag required)
1922: sub start_dl {
1923: my ($target,$token) = @_;
1924: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1925: if ($target eq 'web' || $target eq 'webgrade') {
1926: $currentstring .= $token->[4];
1927: } elsif ($target eq 'tex') {
1928: $currentstring .= '\begin{description}';
1929: $Apache::londefdef::DL++;
1930: push(@Apache::londefdef::description,[]);
1931: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1932: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1933: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1934: }
1935: return $currentstring;
1936: }
1937:
1938: sub end_dl {
1939: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1940: my $currentstring = '';
1941: if ($target eq 'web' || $target eq 'webgrade') {
1942: $currentstring = $token->[2];
1943: } elsif ($target eq 'tex') {
1944: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1945: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1946: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1947: $currentstring.=' '.$element.' ';
1948: }
1949: pop(@Apache::londefdef::description);
1950: $currentstring.='\end{description}';
1951: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1952: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1953: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1954: $Apache::londefdef::DL--;
1955: }
1956: return $currentstring;
1957: }
1958:
1959: #-- <dt> tag (end tag optional)
1960: sub start_dt {
1961: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1962: my $currentstring='';
1963: if ($target eq 'web' || $target eq 'webgrade') {
1964: $currentstring = $token->[4];
1965: } elsif ($target eq 'tex') {
1966: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1967: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1968: &Apache::lonxml::startredirection();
1969: $Apache::londefdef::DT[-1]++;
1970: $Apache::londefdef::seenDT[-1]=1;
1971: }
1972: return $currentstring;
1973: }
1974:
1975: sub end_dt {
1976: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1977: my $currentstring = '';
1978: if ($target eq 'web' || $target eq 'webgrade') {
1979: $currentstring = $token->[2];
1980: } elsif ($target eq 'tex') {
1981: if ($Apache::londefdef::DT[-1]) {
1982: my $data=&item_cleanup();
1983: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1984: $Apache::londefdef::DT[-1]--;
1985: }
1986: }
1987: return $currentstring;
1988: }
1989:
1990: sub item_cleanup {
1991: my $item=&Apache::lonxml::endredirection();
1992: $item=~s/\\begin{center}//g;
1993: $item=~s/\\end{center}//g;
1994: return $item;
1995: }
1996:
1997: #-- <dd> tag (end tag optional)
1998: sub start_dd {
1999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2000: my $currentstring = '';
2001: if ($target eq 'web' || $target eq 'webgrade') {
2002: $currentstring = $token->[4];
2003: } elsif ($target eq 'tex') {
2004: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2005: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2006: if (!$Apache::londefdef::seenDT[-1]) {
2007: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2008: }
2009: push(@{$Apache::londefdef::description[-1]},'');
2010: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2011: $Apache::londefdef::DD[-1]++;
2012: &Apache::lonxml::startredirection();
2013: }
2014: return $currentstring;
2015: }
2016:
2017: sub end_dd {
2018: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2019: my $currentstring = '';
2020: if ($target eq 'web' || $target eq 'webgrade') {
2021: $currentstring = $token->[2];
2022: } elsif ($target eq 'tex') {
2023: $Apache::londefdef::description[-1]->[-1].=
2024: &Apache::lonxml::endredirection().' \vskip 0mm ';
2025: $Apache::londefdef::DD[-1]--;
2026: }
2027: return $currentstring;
2028: }
2029:
2030: #-- <table> tag (end tag required)
2031: # <table> also ends any prior <p> that is not closed.
2032: # but, unless I allow <p>'s to nest, that's the
2033: # only way I could think of to allow <p> in
2034: # <tr> <th> bodies
2035: #
2036: #list of supported attributes: border,width,TeXwidth,TeXtheme
2037: # align
2038: sub start_table {
2039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2040: my $textwidth = '';
2041: my $currentstring = &end_p();
2042: if ($target eq 'web' || $target eq 'webgrade') {
2043: $currentstring .= $token->[4];
2044: } elsif ($target eq 'tex') {
2045: &disable_para(); # Can't have paras in a table.
2046:
2047:
2048: # New table code:
2049:
2050: # Get the parameters that we can do something about:
2051:
2052: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2053: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2054: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2055: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2056: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2057:
2058: # The only thing that needs any figuring out is the width.. and then only if it is
2059: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2060: #
2061:
2062: my $table = new Apache::lontable();
2063: if ((defined $border) && ($border > 0)) {
2064: # &Apache::lonnet::logthis("Turning on table borders: $border");
2065: $table->table_border(1);
2066: if (!defined $cell_border) {
2067: $table->cell_border(1); # Default for rules is all if rules not defined.
2068: }
2069: }
2070: # Only all or nothing for cell borders for now:
2071:
2072: if ((defined $cell_border)) {
2073: if ($cell_border eq 'all') {
2074: $table->cell_border(1);
2075: } elsif ($cell_border eq 'rows') {
2076: $table->cell_border(2);
2077: } elsif ($cell_border eq 'cols') {
2078: $table->cell_border(3);
2079: } else {
2080: $table->cell_border(0);
2081: }
2082: }
2083: if (defined $theme) {
2084: $table->theme($theme);
2085: }
2086: if (defined $align) {
2087: $table->alignment($align);
2088: }
2089:
2090: # Missing width is most of page width
2091:
2092: if (!(defined $width)) {
2093: $width = '70%';
2094: }
2095:
2096: # If a percentage, need to calculate what this means in terms of
2097: # page width:
2098:
2099: if ($width =~ /%$/) {
2100: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2101: $width =~ s/%//;
2102: $width = $width * $textwidth / 100.0;
2103: $width .= " mm";
2104: $table->width($width);
2105: }
2106:
2107: push(@Apache::londefdef::table, $table);
2108: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2109:
2110: }
2111: return $currentstring;
2112: }
2113:
2114: sub end_table {
2115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2116: my $currentstring = '';
2117: if ($target eq 'web' || $target eq 'webgrade') {
2118: $currentstring = $token->[2];
2119: } elsif ($target eq 'tex') {
2120:
2121:
2122: my $table = pop(@Apache::londefdef::table);
2123: my $t = $table->generate();
2124: # &Apache::lonnet::logthis("Generating string");
2125: $currentstring = $t->generate_string();
2126: # &Apache::lonnet::logthis("Generated: $currentstring");
2127: &enable_para();
2128:
2129: }
2130: return $currentstring;
2131: }
2132:
2133: #-- <tr> tag (end tag optional)
2134: sub start_tr {
2135: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2136: my $currentstring = '';
2137: if ($target eq 'web' || $target eq 'webgrade') {
2138: $currentstring = $token->[4];
2139: } elsif ($target eq 'tex') {
2140:
2141: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2142: $Apache::londefdef::table[-1]->start_row();
2143:
2144: if ($align ne '') {
2145: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2146: }
2147:
2148: #---------------------------------------------------------------
2149: # Old table code.
2150: #---------------------------------------------------------------
2151:
2152: if (0) {
2153: $Apache::londefdef::table[-1]{'row_number'}++;
2154: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2155: if ($alignchar ne '') {
2156: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2157: } else {
2158: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2159: }
2160: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2161: #
2162: # Need to save the number of table columns to preserve the max # columns.
2163: #
2164: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2165: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2166: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2167: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2168: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2169: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2170: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2171: }
2172: }
2173: return $currentstring;
2174: }
2175:
2176: sub end_tr {
2177: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2178: my $currentstring = &end_p(); # Close any pending <p> in the row.
2179: if ($target eq 'web' || $target eq 'webgrade') {
2180: $currentstring .= $token->[2];
2181: } elsif ($target eq 'tex') {
2182:
2183: # In case the user is missing a </td> or </th> tag:
2184:
2185: if ($Apache::londefdef::TD_redirection) {
2186: &end_td_tex($parstack,$parser,$safeeval);
2187: }
2188: $Apache::londefdef::table[-1]->end_row();
2189:
2190: #-----------------------------------------------
2191: # Old table code
2192: #-----------------------------------------------
2193:
2194: if (0) {
2195: if ($Apache::londefdef::TD_redirection) {
2196: &end_td_tex($parstack,$parser,$safeeval);
2197: }
2198: # Counter columns must be the maximum number of columns seen
2199: # in the table so far so:
2200: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2201: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2202: }
2203: }
2204:
2205:
2206: }
2207: return $currentstring;
2208: }
2209:
2210: #-- <td> tag (end tag optional)
2211: sub start_td {
2212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2213: my $currentstring = '';
2214: if ($target eq 'web' || $target eq 'webgrade') {
2215: $currentstring = $token->[4];
2216: } elsif ($target eq 'tex') {
2217: $Apache::londefdef::TD_redirection = 1;
2218: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2219: }
2220: return $currentstring;
2221: }
2222:
2223: sub tag_check {
2224: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2225: my @ar=@$parstack;
2226: for (my $i=$#ar-1;$i>=0;$i--) {
2227: if (lc($$tagstack[$i]) eq $good_tag) {
2228: &start_td_tex($parstack,$parser,$safeeval);
2229: last;
2230: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2231: splice @ar, $i+1;
2232: &end_td_tex(\@ar,$parser,$safeeval);
2233: &start_td_tex($parstack,$parser,$safeeval);
2234: last;
2235: }
2236: }
2237: return '';
2238: }
2239:
2240: #
2241: # Factor out cell configuration hash generation:
2242: #
2243:
2244: sub cell_config_hash {
2245: my ($align, $rowspan, $colspan, $width) = @_;
2246: if ($rowspan ne '') {
2247: $rowspan =~ s/^\s+|\s+$//g;
2248: }
2249: if ($colspan ne '') {
2250: $colspan =~ s/^\s+|\s+$//g;
2251: }
2252: my %config;
2253: if ($align ne '') {
2254: $config{'halign'} = $align;
2255: }
2256: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2257: $config{'colspan'} = $colspan;
2258: }
2259: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2260: $config{'rowspan'} = $rowspan;
2261: }
2262: if ($width ne '') {
2263: $config{'width'} = $width;
2264: }
2265: return \%config;
2266: }
2267:
2268: sub start_td_tex {
2269: my ($parstack,$parser,$safeeval) = @_;
2270:
2271: # At this stage, an empty cell is created with the
2272: # appropriate rowspan/colspan and alignment
2273: # attributes, but empty of text. end_td_tex will
2274: # fetch the contents from the recursive parse and
2275: # fill the cell with them:
2276: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2277: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2278: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2279: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2280: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2281:
2282: my $table = $Apache::londefdef::table[-1];
2283: $table->add_cell('', $config);
2284:
2285:
2286: #------------------------------------------------
2287: # Old table code.
2288: #------------------------------------------------
2289:
2290: if (0) {
2291:
2292: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2293: if ($alignchar eq '') {
2294: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2295: }
2296: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2297: $Apache::londefdef::table[-1]{'counter_columns'}++;
2298: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2299: if (defined $TeXwidth) {
2300: my $current_length=&recalc($TeXwidth);
2301: $current_length=~/(\d+\.?\d*)/;
2302: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2303: }
2304: }
2305: &Apache::lonxml::startredirection();
2306: return '';
2307: }
2308:
2309: sub end_td_tex {
2310:
2311: my $text = &Apache::lonxml::endredirection();
2312: my $table = $Apache::londefdef::table[-1];
2313: $table->append_cell_text($text);
2314:
2315: #-------------------------------------------------
2316: # Old table code
2317: #-------------------------------------------------
2318:
2319: if (0) {
2320: my ($parstack,$parser,$safeeval) = @_;
2321: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2322: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2323: my $data = &Apache::lonxml::endredirection();
2324:
2325: # The rowspan array of the table indicates which cells are part of a span.
2326: # n indicates the start of a span set of n rows.
2327: # ^ indicates a cell that continues a span set.
2328: # _ indicates the cell is at the bottom of a span set.
2329: # If this and subsequent cells are part of a rowspan, we must
2330: # push along the row until we find one that is not.
2331:
2332: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2333: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2334: # Part of a span.
2335: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2336: $current_column++;
2337: }
2338: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2339:
2340:
2341: # Get the column and row spans.
2342: # Colspan can be done via \multicolumn if I can figure out the data structs.
2343:
2344: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2345: if (!$colspan) {
2346: $colspan = 1;
2347: }
2348:
2349: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2350: if (!$rowspan) {
2351: $rowspan = 1;
2352: }
2353:
2354:
2355:
2356: for (my $c = 0; $c < $colspan; $c++) {
2357: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2358: for (my $i = 1; $i < $rowspan; $i++) {
2359: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2360: if ($i == ($rowspan-1)) {
2361: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2362: }
2363: }
2364: }
2365:
2366: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2367: if (defined $TeXwidth) {
2368: for (my $c = 0; $c < $colspan; $c++) {
2369: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2370: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2371: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2372: }
2373: } else {
2374: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2375: my $garbage_data=$data;
2376: my $fwidth=0;
2377: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2378: my $current_length=&recalc($1);
2379: $current_length=~/(\d+\.?\d*)/;
2380: if ($fwidth<$1) {$fwidth=$1;}
2381: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2382: }
2383: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2384: my $current_length=$1;
2385: if ($fwidth<$current_length) {$fwidth=$current_length;}
2386: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2387: }
2388: for (my $c = 0; $c < $colspan; $c++) {
2389: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2390: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2391: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2392: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2393: }
2394: } 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)*/) {
2395: my $garbage_data=$data;
2396: my $fwidth=0;
2397: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2398: my $current_length=&recalc($1);
2399: $current_length=~/(\d+\.?\d*)/;
2400: if ($fwidth<$1) {$fwidth=$1;}
2401: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2402: }
2403: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2404: my $current_length=&recalc($1);
2405: $current_length=~/(\d+\.?\d*)/;
2406: if ($fwidth<$1) {$fwidth=$1;}
2407: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2408: }
2409: for (my $c = 0; $c < $colspan; $c++) {
2410: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2411: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2412: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2413: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2414: }
2415: $data=~s/\\\\\s*$//;
2416: } else {
2417: $data=~s/^\s+(\S.*)/$1/;
2418: $data=~s/(.*\S)\s+$/$1/;
2419: $data=~s/(\s)+/$1/;
2420: my ($current_length,$min_length)=(0,0);
2421: if ($data=~/\\vskip/) {
2422: my $newdata=$data;
2423: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2424: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2425: foreach my $elementdata (@newdata) {
2426: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2427: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2428: my @words=split(/ /,$elementdata);
2429: foreach my $word (@words) {
2430: my $lengthword=2.5*&LATEX_length($word);
2431: if ($min_length<$lengthword) {$min_length=$lengthword;}
2432: }
2433: }
2434: } else {
2435: $current_length=2.5*&LATEX_length($data);
2436: my @words=split(/ /,$data);
2437: foreach my $word (@words) {
2438: my $lengthword=2*&LATEX_length($word);
2439: if ($min_length<$lengthword) {$min_length=$lengthword;}
2440: }
2441: }
2442: for (my $c = 0; $c < $colspan; $c++) {
2443: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2444: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2445: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2446: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2447: }
2448: }
2449: }
2450: # Substitute all of the tables nested in this cell in their appropriate places.
2451:
2452:
2453: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2454: for (my $in=0; $in<=$nested_count; $in++) {
2455: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2456: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2457: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2458: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2459:
2460: }
2461: # Should be be killing off the 'include' elements as they're used up?
2462:
2463: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2464:
2465:
2466:
2467:
2468: # the colspan array will indicate how many columns will be spanned by this
2469: # cell..this requires that counter_columns also be adjusted accordingly
2470: # so that the next bunch of text goes in the right cell. Note that since
2471: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2472: #
2473:
2474: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2475: for (my $i = 0; $i < ($colspan -1); $i++) {
2476: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2477: }
2478: for (my $r = 0; $r < $rowspan; $r++) {
2479: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2480: # Put empty text in spanned cols.
2481:
2482: }
2483:
2484: }
2485:
2486: return '';
2487: }
2488:
2489: sub end_td {
2490: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2491: my $currentstring = '';
2492: if ($target eq 'web' || $target eq 'webgrade') {
2493: $currentstring = $token->[2];
2494: } elsif ($target eq 'tex') {
2495: $Apache::londefdef::TD_redirection =0;
2496: &end_td_tex($parstack,$parser,$safeeval);
2497: }
2498: return $currentstring;
2499: }
2500:
2501: #-- <th> tag (end tag optional)
2502: sub start_th {
2503: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2504: my $currentstring = '';
2505: if ($target eq 'web' || $target eq 'webgrade') {
2506: $currentstring = $token->[4];
2507: } elsif ($target eq 'tex') {
2508: $Apache::londefdef::TD_redirection = 1;
2509: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2510: }
2511: return $currentstring;
2512: }
2513:
2514: sub tagg_check {
2515: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2516: my @ar=@$parstack;
2517: for (my $i=$#ar-1;$i>=0;$i--) {
2518: if (lc($$tagstack[$i]) eq $good_tag) {
2519: &start_th_tex($parstack,$parser,$safeeval);
2520: last;
2521: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2522: splice @ar, $i+1;
2523: &end_th_tex(\@ar,$parser,$safeeval);
2524: &start_th_tex($parstack,$parser,$safeeval);
2525: last;
2526: }
2527: }
2528: return '';
2529: }
2530:
2531: sub start_th_tex {
2532: my ($parstack,$parser,$safeeval) = @_;
2533:
2534: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2535: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2536: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2537:
2538: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2539: my $table = $Apache::londefdef::table[-1];
2540: $table->add_cell('\textbf{', $config);
2541:
2542: #-------------------------------------------------------------------------------------
2543: #
2544: # Old table code.
2545: #
2546: #--------------------------------------------------------------------------------------
2547:
2548: if (0) {
2549:
2550:
2551: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2552: if ($alignchar eq '') {
2553: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2554: }
2555: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2556: $Apache::londefdef::table[-1]{'counter_columns'}++;
2557: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2558: if (defined $TeXwidth) {
2559: my $current_length=&recalc($TeXwidth);
2560: $current_length=~/(\d+\.?\d*)/;
2561: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2562: }
2563: }
2564:
2565: # Accept xml until the </th> tag.
2566:
2567: &Apache::lonxml::startredirection();
2568: return '';
2569: }
2570:
2571: sub end_th_tex {
2572: my ($parstack,$parser,$safeeval) = @_;
2573:
2574: my $table = $Apache::londefdef::table[-1];
2575: my $text = &Apache::lonxml::endredirection();
2576: $table->append_cell_text($text.'}');
2577:
2578: #-----------------------------------------------------------------------------
2579: # Old table code:
2580: #-----------------------------------------------------------------------------
2581:
2582: if (0) {
2583: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2584: my $data=&Apache::lonxml::endredirection();
2585: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2586: if (defined $TeXwidth) {
2587: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2588: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2589: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2590: } else {
2591: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2592: my $garbage_data=$data;
2593: my $fwidth=0;
2594: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2595: my $current_length=&recalc($1);
2596: $current_length=~/(\d+\.?\d*)/;
2597: if ($fwidth<$1) {$fwidth=$1;}
2598: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2599: }
2600: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2601: my $current_length=$1;
2602: if ($fwidth<$current_length) {$fwidth=$current_length;}
2603: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2604: }
2605: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2606: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2607: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2608: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2609: } else {
2610: $data=~s/^\s+(\S.*)/$1/;
2611: $data=~s/(.*\S)\s+$/$1/;
2612: $data=~s/(\s)+/$1/;
2613: my ($current_length,$min_length)=(0,0);
2614: if ($data=~/\\vskip/) {
2615: my $newdata=$data;
2616: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2617: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2618: foreach my $elementdata (@newdata) {
2619: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2620: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2621: my @words=split(/ /,$elementdata);
2622: foreach my $word (@words) {
2623: my $lengthword=2.5*&LATEX_length($word);
2624: if ($min_length<$lengthword) {$min_length=$lengthword;}
2625: }
2626: }
2627: } else {
2628: $current_length=2.5*&LATEX_length($data);
2629: my @words=split(/ /,$data);
2630: foreach my $word (@words) {
2631: my $lengthword=2*&LATEX_length($word);
2632: if ($min_length<$lengthword) {$min_length=$lengthword;}
2633: }
2634: }
2635: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2636: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2637: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2638: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2639: }
2640: }
2641: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2642: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2643: }
2644: #make data bold
2645: $data='\textbf{'.$data.'}';
2646: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2647: }
2648: return'';
2649: }
2650:
2651: sub end_th {
2652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2653: my $currentstring = &end_p(); # Close any open <p> in the row.
2654: if ($target eq 'web' || $target eq 'webgrade') {
2655: $currentstring .= $token->[2];
2656: } elsif ($target eq 'tex') {
2657: $Apache::londefdef::TD_redirection =0;
2658: &end_th_tex($parstack,$parser,$safeeval);
2659: }
2660: return $currentstring;
2661: }
2662:
2663: #-- <img> tag (end tag forbidden)
2664: #
2665: # Render the <IMG> tag.
2666: # <IMG> has the following attributes (in addition to the
2667: # standard HTML ones:
2668: # TeXwrap - Governs how the tex target will try to wrap text around
2669: # horizontally aligned images.
2670: # TeXwidth - The width of the image when rendered for print (mm).
2671: # TeXheight - The height of the image when rendered for print (mm)
2672: # (Note there seems to also be support for this as a % of page size)
2673: #
2674: sub start_img {
2675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2676: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2677: undef,1);
2678: if (! $src &&
2679: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2680: ) {
2681: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2682: return '';
2683: }
2684: &Apache::lonxml::extlink($src);
2685: my $currentstring = '';
2686: my $scaling = .3;
2687:
2688: # Render unto browsers that which are the browser's...
2689:
2690: if ($target eq 'web' || $target eq 'webgrade') {
2691: my $enc = ('yes' eq
2692: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2693: $safeeval)));
2694: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2695: $enc);
2696:
2697: # and render unto TeX that which is LaTeX
2698: } elsif ($target eq 'tex') {
2699: #
2700: # The alignment will require some superstructure to be put around
2701: # the \includegraphics stuff. At present we can only partially
2702: # simulate the alignments offered by html.
2703: #
2704: #
2705: my $align = lc(&Apache::lonxml::get_param('align',
2706: $parstack,
2707: $safeeval,
2708: undef,1));
2709: if(!$align) {
2710: $align = "bottom"; # This is html's default so it's ours too.
2711: }
2712: #
2713: &Apache::lonxml::debug("Alignemnt = $align");
2714: # LaTeX's image/text wrapping is really bad since it wants to
2715: # make figures float.
2716: # The user has the optional parameter (applicable only to l/r
2717: # alignment to use the picins/parpic directive to get wrapped text
2718: # this is also imperfect.. that's why we give them a choice...
2719: # so they can't yell at us for our choice.
2720: #
2721: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2722: $parstack,
2723: $safeeval,
2724: undef,0);
2725: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2726: if(!$latex_rendering) {
2727: $latex_rendering = "texwrap";
2728: }
2729: # using texwrap inside a table does not work. So, if after all of this,
2730: # texwrap is on, we turn it off if we detect we're in a table:
2731: #
2732: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2733: $latex_rendering = 'parpic';
2734: }
2735:
2736: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2737:
2738: #if original bmp/gif/jpg/png file exist do following:
2739: my $origsrc=$src;
2740: my ($path,$file) = &get_eps_image($src);
2741: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2742: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2743: &Apache::lonxml::debug("path = $path file = $file src = $src");
2744: if (-e $src) {
2745: &Apache::lonxml::debug("$src exists");
2746: my ($height_param,$width_param)=
2747: &image_size($origsrc,0.3,$parstack,$safeeval);
2748: my $size;
2749: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2750: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2751: # Default size if not able to extract that (e.g. eps image).
2752:
2753: # &Apache::lonnet::logthis("Size = $size");
2754:
2755: $size='['.$size;
2756: $size=~s/,$/]/;
2757: $currentstring .= '\graphicspath{{'.$path.'}}'
2758: .'\includegraphics'.$size.'{'.$file.'} ';
2759: my $closure;
2760: ($currentstring, $closure) = &align_latex_image($align,
2761: $latex_rendering,
2762: $currentstring,
2763: $width_param,
2764: $height_param);
2765: $currentstring .= $closure;
2766:
2767: } else {
2768: &Apache::lonxml::debug("$src does not exist");
2769: #original image file doesn't exist so check the alt attribute
2770: my $alt =
2771: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2772: unless ($alt) {
2773: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2774: }
2775:
2776: if ($alt) { $currentstring .= ' '.$alt.' '; }
2777: }
2778:
2779: # And here's where the semi-quote breaks down: allow the user
2780: # to edit the beast as well by rendering the problem for edit:
2781: } elsif ($target eq 'edit') {
2782: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2783: $currentstring .=&Apache::edit::tag_start($target,$token);
2784: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2785: &Apache::edit::browse('src',undef,'alt',$only).' '.
2786: &Apache::edit::search('src',undef,'alt').'<br />';
2787: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2788: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2789: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2790: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2791: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2792: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2793: ['','bottom','middle','top','left','right'],$token,5);
2794: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2795: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2796: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2797: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2798:
2799: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2800: ['no','yes'], $token, 2);
2801: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2802: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2803: }
2804: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2805: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2806: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2807: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2808:
2809: if ($token->[2]{'src'}=~/\$/) {
2810: $currentstring.=&mt('Variable image source');
2811: } elsif ($token->[2]{'src'}=~/\S/) {
2812: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2813: if ($width) { $currentstring.=' width="'.$width.'" '; }
2814: if ($height) { $currentstring.=' height="'.$height.'" '; }
2815: $currentstring .= ' />';
2816: } else {
2817: $currentstring.=&mt("No image source specified");
2818: }
2819: } elsif ($target eq 'modified') {
2820: my ($osrc,$owidth,$oheight)=
2821: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2822: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2823: $safeeval,'src','alt','align',
2824: 'TeXwidth','TeXheight', 'TeXwrap',
2825: 'width','height','encrypturl');
2826: my ($nsrc,$nwidth,$nheight)=
2827: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2828: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2829: &image_replication($loc);
2830: my ($iwidth,$iheight);
2831: if (-e $loc) {
2832: my $image = Image::Magick->new;
2833: $image->Read($loc);
2834: ($iwidth, $iheight) = ($image->Get('width'),
2835: $image->Get('height'));
2836: }
2837: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2838: # changed image or no size specified,
2839: # if they didn't explicitly change the
2840: # width or height use the ones from the image
2841: if ($iwidth && $iheight) {
2842: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2843: $token->[2]{'width'} = $iwidth;$ctag=1;
2844: }
2845: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2846: $token->[2]{'height'}=$iheight;$ctag=1;
2847: }
2848: }
2849: }
2850: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2851: # if we don't have a width or height
2852: if ($iwidth && $cwidth && !$cheight) {
2853: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2854: }
2855: if ($iheight && $cheight && !$cwidth) {
2856: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2857: }
2858: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2859: }
2860:
2861: return $currentstring;
2862: }
2863:
2864: sub end_img {
2865: my ($target,$token) = @_;
2866: my $currentstring = '';
2867: if ($target eq 'web' || $target eq 'webgrade') {
2868: $currentstring = $token->[2];
2869: } elsif ($target eq 'tex') {
2870: $currentstring = '';
2871: }
2872: return $currentstring;
2873: }
2874:
2875: #-- <applet> tag (end tag required)
2876: sub start_applet {
2877: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2878:
2879: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2880: &Apache::lonxml::extlink($code);
2881: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2882: undef,1);
2883: &Apache::lonxml::extlink($archive);
2884: my $currentstring = '';
2885: if ($target eq 'web' || $target eq 'webgrade') {
2886: $currentstring = &Apache::lonenc::encrypt_ref($token,
2887: {'code'=>$code,
2888: 'archive'=>$archive}
2889: );
2890: } elsif ($target eq 'tex') {
2891: # Turn off some stuff we can't be inside thank you LaTeX
2892:
2893: my $restart_sub = 0;
2894: my $restart_sup = 0;
2895:
2896: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2897: # using the start_ stop_ functions.. those tags only care about
2898: # $target.
2899:
2900: if (&is_inside_of($tagstack, "sub")) {
2901: $restart_sub = 1;
2902: $currentstring .= &end_sub($target, $token, $tagstack,
2903: $parstack, $parser, $safeeval);
2904: }
2905: if (&is_inside_of($tagstack, "sup")) {
2906: $restart_sup = 1;
2907: $currentstring .= &end_sup($target, $token, $tagstack,
2908: $parstack, $parser, $safeeval);
2909: }
2910:
2911: # Now process the applet; just replace it with its alt attribute.
2912:
2913: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2914: $safeeval,undef,1);
2915: unless ($alttag) {
2916: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2917: undef,1);
2918: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2919: $code);
2920: }
2921: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2922: '.}\end{center}';
2923:
2924: # Turn stuff back on that we can't be inside of.
2925:
2926: if ($restart_sub) {
2927: $currentstring .= &start_sub($target, $token, $tagstack,
2928: $parstack, $parser, $safeeval);
2929: }
2930: if ($restart_sup) {
2931: $currentstring .= &start_sup($target, $token, $tagstack,
2932: $parstack, $parser, $safeeval);
2933: }
2934: }
2935: return $currentstring;
2936: }
2937:
2938: sub end_applet {
2939: my ($target,$token) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web' || $target eq 'webgrade') {
2942: $currentstring = $token->[2];
2943: } elsif ($target eq 'tex') {
2944: }
2945: return $currentstring;
2946: }
2947:
2948: #-- <embed> tag (end tag optional/required)
2949: sub start_embed {
2950: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2951: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2952: &Apache::lonxml::extlink($src);
2953: my $currentstring = '';
2954: if ($target eq 'web' || $target eq 'webgrade') {
2955: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2956: } elsif ($target eq 'tex') {
2957: }
2958: return $currentstring;
2959: }
2960:
2961: sub end_embed {
2962: my ($target,$token) = @_;
2963: my $currentstring = '';
2964: if ($target eq 'web' || $target eq 'webgrade') {
2965: $currentstring = $token->[2];
2966: } elsif ($target eq 'tex') {
2967: # ./.
2968: }
2969: return $currentstring;
2970: }
2971:
2972: #-- <param> tag (end tag forbidden)
2973: sub start_param {
2974: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2975: if (&Apache::lonxml::get_param('name',$parstack,
2976: $safeeval,undef,1)=~/^cabbase$/i) {
2977: my $value=&Apache::lonxml::get_param('value',$parstack,
2978: $safeeval,undef,1);
2979: &Apache::lonxml::extlink($value);
2980: }
2981:
2982: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2983: &Apache::lonxml::extlink($src);
2984: my $currentstring = '';
2985: if ($target eq 'web' || $target eq 'webgrade') {
2986: my %toconvert;
2987: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2988: if ($src) { $toconvert{'src'}= $src; }
2989: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2990: undef,1);
2991: if ($name=~/^cabbase$/i) {
2992: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2993: $safeeval,undef,1);
2994: }
2995: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2996: } elsif ($target eq 'tex') {
2997: }
2998: return $currentstring;
2999: }
3000:
3001: sub end_param {
3002: my ($target,$token) = @_;
3003: my $currentstring = '';
3004: if ($target eq 'web' || $target eq 'webgrade') {
3005: $currentstring = $token->[2];
3006: } elsif ($target eq 'tex') {
3007: }
3008: return $currentstring;
3009: }
3010:
3011: #-- <allow> tag
3012: sub start_allow {
3013: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3014: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3015: &Apache::lonxml::extlink($src);
3016:
3017: if ($target eq 'tex') { &image_replication($src); }
3018: my $result;
3019: if ($target eq 'edit') {
3020: $result .=&Apache::edit::tag_start($target,$token);
3021: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3022: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3023: } elsif ($target eq 'modified') {
3024: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3025: $safeeval,'src');
3026: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3027: }
3028: return $result;
3029: }
3030:
3031: sub end_allow {
3032: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3033: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3034: return '';
3035: }
3036:
3037: #-- Frames (end tag required)
3038: #-- <frameset>
3039: sub start_frameset {
3040: my ($target,$token) = @_;
3041: my $currentstring = ''; # Close any pending para.
3042: if ($target eq 'web' || $target eq 'webgrade') {
3043: $currentstring =
3044: &Apache::loncommon::start_page($Apache::londefdef::title,
3045: $Apache::londefdef::head,
3046: {'add_entries' => $token->[2],
3047: # 'no_title' => 1,
3048: 'force_register' => 1,
3049: 'frameset' => 1,});
3050:
3051: }
3052: return $currentstring;
3053: }
3054:
3055: sub end_frameset {
3056: my ($target,$token) = @_;
3057: my $currentstring = '';
3058: if ($target eq 'web' || $target eq 'webgrade') {
3059: $currentstring = $token->[2];
3060: }
3061: return $currentstring;
3062: }
3063:
3064: #-- <xmp> (end tag required)
3065: sub start_xmp {
3066: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3067: my $currentstring = '';
3068: if ($target eq 'web' || $target eq 'webgrade') {
3069: $currentstring .= $token->[4];
3070: } elsif ($target eq 'tex') {
3071: $currentstring .= '\begin{verbatim}';
3072: }
3073: return $currentstring;
3074: }
3075:
3076: sub end_xmp {
3077: my ($target,$token) = @_;
3078: my $currentstring = '';
3079: if ($target eq 'web' || $target eq 'webgrade') {
3080: $currentstring .= $token->[2];
3081: } elsif ($target eq 'tex') {
3082: $currentstring .= '\end{verbatim}';
3083: }
3084: return $currentstring;
3085: }
3086:
3087: #-- <pre> (end tag required)
3088: sub start_pre {
3089: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3090: my $currentstring = &end_p(); # close off pending <p>
3091: if ($target eq 'web' || $target eq 'webgrade') {
3092: $currentstring .= $token->[4];
3093: } elsif ($target eq 'tex') {
3094: $currentstring .= '\begin{verbatim}';
3095: &Apache::lonxml::disable_LaTeX_substitutions();
3096: }
3097: return $currentstring;
3098: }
3099:
3100: sub end_pre {
3101: my ($target,$token) = @_;
3102: my $currentstring = '';
3103: if ($target eq 'web' || $target eq 'webgrade') {
3104: $currentstring .= $token->[2];
3105: } elsif ($target eq 'tex') {
3106: $currentstring .= '\end{verbatim}';
3107: &Apache::lonxml::enable_LaTeX_substitutions();
3108: }
3109: return $currentstring;
3110: }
3111:
3112: #-- <insert>
3113: sub start_insert {
3114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3115: my $currentstring = '';
3116: if ($target eq 'web' || $target eq 'webgrade') {
3117: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3118: $currentstring .= '<b>'.$display.'</b>';;
3119: }
3120: return $currentstring;
3121: }
3122:
3123: sub end_insert {
3124: my ($target,$token) = @_;
3125: my $currentstring = '';
3126: if ($target eq 'web' || $target eq 'webgrade') {
3127: $currentstring .= '';
3128: }
3129: return $currentstring;
3130: }
3131:
3132: #-- <externallink>
3133: sub start_externallink {
3134: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3135: my $currentstring = '';
3136: if ($target eq 'web' || $target eq 'webgrade') {
3137: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3138: $currentstring .= '<b>'.$display.'</b>';;
3139: }
3140: return $currentstring;
3141: }
3142:
3143: sub end_externallink {
3144: my ($target,$token) = @_;
3145: my $currentstring = '';
3146: if ($target eq 'web' || $target eq 'webgrade') {
3147: $currentstring .= '';
3148: }
3149: return $currentstring;
3150: }
3151:
3152: #-- <blankspace heigth="">
3153: sub start_blankspace {
3154: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3155: my $currentstring = &end_p(); # closes off any unclosed <p>
3156: if ($target eq 'tex') {
3157: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3158: $currentstring .= '\vskip '.$howmuch.' ';
3159: }
3160: return $currentstring;
3161: }
3162:
3163: sub end_blankspace {
3164: my ($target,$token) = @_;
3165: my $currentstring = '';
3166: if ($target eq 'tex') {
3167: $currentstring .= '';
3168: }
3169: return $currentstring;
3170: }
3171:
3172: #-- <abbr> tag (end tag required)
3173: sub start_abbr {
3174: my ($target,$token) = @_;
3175: my $currentstring = '';
3176: if ($target eq 'web' || $target eq 'webgrade') {
3177: $currentstring = $token->[4];
3178: }
3179: return $currentstring;
3180: }
3181:
3182: sub end_abbr {
3183: my ($target,$token) = @_;
3184: my $currentstring = '';
3185: if ($target eq 'web' || $target eq 'webgrade') {
3186: $currentstring = $token->[2];
3187: }
3188: return $currentstring;
3189: }
3190:
3191: #-- <acronym> tag (end tag required)
3192: sub start_acronym {
3193: my ($target,$token) = @_;
3194: my $currentstring = '';
3195: if ($target eq 'web' || $target eq 'webgrade') {
3196: $currentstring = $token->[4];
3197: }
3198: return $currentstring;
3199: }
3200:
3201: sub end_acronym {
3202: my ($target,$token) = @_;
3203: my $currentstring = '';
3204: if ($target eq 'web' || $target eq 'webgrade') {
3205: $currentstring = $token->[2];
3206: }
3207: return $currentstring;
3208: }
3209:
3210: #-- <area> tag (end tag forbidden)
3211: sub start_area {
3212: my ($target,$token) = @_;
3213: my $currentstring = '';
3214: if ($target eq 'web' || $target eq 'webgrade') {
3215: $currentstring = $token->[4];
3216: }
3217: return $currentstring;
3218: }
3219:
3220: sub end_area {
3221: my ($target,$token) = @_;
3222: my $currentstring = '';
3223: if ($target eq 'web' || $target eq 'webgrade') {
3224: $currentstring = $token->[2];
3225: }
3226: return $currentstring;
3227: }
3228:
3229: #-- <base> tag (end tag forbidden)
3230: sub start_base {
3231: my ($target,$token) = @_;
3232: my $currentstring = '';
3233: if ($target eq 'web' || $target eq 'webgrade') {
3234: $currentstring = $token->[4];
3235: }
3236: return $currentstring;
3237: }
3238:
3239: sub end_base {
3240: my ($target,$token) = @_;
3241: my $currentstring = '';
3242: if ($target eq 'web' || $target eq 'webgrade') {
3243: $currentstring = $token->[2];
3244: }
3245: return $currentstring;
3246: }
3247:
3248: #-- <bdo> tag (end tag required)
3249: sub start_bdo {
3250: my ($target,$token) = @_;
3251: my $currentstring = '';
3252: if ($target eq 'web' || $target eq 'webgrade') {
3253: $currentstring = $token->[4];
3254: }
3255: return $currentstring;
3256: }
3257:
3258: sub end_bdo {
3259: my ($target,$token) = @_;
3260: my $currentstring = '';
3261: if ($target eq 'web' || $target eq 'webgrade') {
3262: $currentstring = $token->[2];
3263: }
3264: return $currentstring;
3265: }
3266:
3267: #-- <bgsound> tag (end tag optional)
3268: sub start_bgsound {
3269: my ($target,$token) = @_;
3270: my $currentstring = '';
3271: if ($target eq 'web' || $target eq 'webgrade') {
3272: $currentstring = $token->[4];
3273: }
3274: return $currentstring;
3275: }
3276:
3277: sub end_bgsound {
3278: my ($target,$token) = @_;
3279: my $currentstring = '';
3280: if ($target eq 'web' || $target eq 'webgrade') {
3281: $currentstring = $token->[2];
3282: }
3283: return $currentstring;
3284: }
3285:
3286: #-- <blink> tag (end tag required)
3287: sub start_blink {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'web' || $target eq 'webgrade') {
3291: $currentstring = $token->[4];
3292: }
3293: return $currentstring;
3294: }
3295:
3296: sub end_blink {
3297: my ($target,$token) = @_;
3298: my $currentstring = '';
3299: if ($target eq 'web' || $target eq 'webgrade') {
3300: $currentstring = $token->[2];
3301: }
3302: return $currentstring;
3303: }
3304:
3305: #-- <blockquote> tag (end tag required)
3306: sub start_blockquote {
3307: my ($target,$token) = @_;
3308: my $currentstring = &end_p(); # Close any unclosed <p>
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring .= $token->[4];
3311: }
3312: if ($target eq 'tex') {
3313: $currentstring .= '\begin{quote}';
3314: }
3315: return $currentstring;
3316: }
3317:
3318: sub end_blockquote {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web' || $target eq 'webgrade') {
3322: $currentstring = $token->[2];
3323: }
3324: if ($target eq 'tex') {
3325: $currentstring = '\end{quote}';
3326: }
3327: return $currentstring;
3328: }
3329:
3330: #-- <button> tag (end tag required)
3331: sub start_button {
3332: my ($target,$token) = @_;
3333: my $currentstring = '';
3334: if ($target eq 'web' || $target eq 'webgrade') {
3335: $currentstring = $token->[4];
3336: }
3337: return $currentstring;
3338: }
3339:
3340: sub end_button {
3341: my ($target,$token) = @_;
3342: my $currentstring = '';
3343: if ($target eq 'web' || $target eq 'webgrade') {
3344: $currentstring = $token->[2];
3345: }
3346: return $currentstring;
3347: }
3348:
3349: #-- <caption> tag (end tag required)
3350: sub start_caption {
3351: my ($target,$token) = @_;
3352: my $currentstring = '';
3353: if ($target eq 'web' || $target eq 'webgrade') {
3354: $currentstring = $token->[4];
3355: }
3356: return $currentstring;
3357: }
3358:
3359: sub end_caption {
3360: my ($target,$token) = @_;
3361: my $currentstring = '';
3362: if ($target eq 'web' || $target eq 'webgrade') {
3363: $currentstring = $token->[2];
3364: }
3365: return $currentstring;
3366: }
3367:
3368: #-- <col> tag (end tag forbdden)
3369: sub start_col {
3370: my ($target,$token) = @_;
3371: my $currentstring = '';
3372: if ($target eq 'web' || $target eq 'webgrade') {
3373: $currentstring = $token->[4];
3374: }
3375: return $currentstring;
3376: }
3377:
3378: sub end_col {
3379: my ($target,$token) = @_;
3380: my $currentstring = '';
3381: if ($target eq 'web' || $target eq 'webgrade') {
3382: $currentstring = $token->[2];
3383: }
3384: return $currentstring;
3385: }
3386:
3387: #-- <colgroup> tag (end tag optional)
3388: sub start_colgroup {
3389: my ($target,$token) = @_;
3390: my $currentstring = '';
3391: if ($target eq 'web' || $target eq 'webgrade') {
3392: $currentstring = $token->[4];
3393: }
3394: return $currentstring;
3395: }
3396:
3397: sub end_colgroup {
3398: my ($target,$token) = @_;
3399: my $currentstring = '';
3400: if ($target eq 'web' || $target eq 'webgrade') {
3401: $currentstring = $token->[2];
3402: }
3403: return $currentstring;
3404: }
3405:
3406:
3407: #-- <del> tag (end tag required)
3408: sub start_del {
3409: my ($target,$token) = @_;
3410: my $currentstring = '';
3411: if ($target eq 'web' || $target eq 'webgrade') {
3412: $currentstring = $token->[4];
3413: } elsif ($target eq 'tex') {
3414: &disable_para();
3415: $currentstring .= '\st{';
3416: }
3417: return $currentstring;
3418: }
3419:
3420: sub end_del {
3421: my ($target,$token) = @_;
3422: my $currentstring = '';
3423: if ($target eq 'web' || $target eq 'webgrade') {
3424: $currentstring = $token->[2];
3425: } elsif ($target eq 'tex') {
3426: &enable_para();
3427: $currentstring = '}';
3428: }
3429: return $currentstring;
3430: }
3431:
3432: #-- <fieldset> tag (end tag required)
3433: sub start_fieldset {
3434: my ($target,$token) = @_;
3435: my $currentstring = '';
3436: if ($target eq 'web' || $target eq 'webgrade') {
3437: $currentstring = $token->[4];
3438: }
3439: return $currentstring;
3440: }
3441:
3442: sub end_fieldset {
3443: my ($target,$token) = @_;
3444: my $currentstring = '';
3445: if ($target eq 'web' || $target eq 'webgrade') {
3446: $currentstring = $token->[2];
3447: }
3448: return $currentstring;
3449: }
3450:
3451: #-- <frame> tag (end tag forbidden)
3452: sub start_frame {
3453: my ($target,$token) = @_;
3454: my $currentstring = '';
3455: if ($target eq 'web' || $target eq 'webgrade') {
3456: $currentstring = $token->[4];
3457: }
3458: return $currentstring;
3459: }
3460:
3461: sub end_frame {
3462: my ($target,$token) = @_;
3463: my $currentstring = '';
3464: if ($target eq 'web' || $target eq 'webgrade') {
3465: $currentstring = $token->[2];
3466: }
3467: return $currentstring;
3468: }
3469:
3470: #-- <iframe> tag (end tag required)
3471: sub start_iframe {
3472: my ($target,$token) = @_;
3473: my $currentstring = '';
3474: if ($target eq 'web' || $target eq 'webgrade') {
3475: $currentstring = $token->[4];
3476: }
3477: return $currentstring;
3478: }
3479:
3480: sub end_iframe {
3481: my ($target,$token) = @_;
3482: my $currentstring = '';
3483: if ($target eq 'web' || $target eq 'webgrade') {
3484: $currentstring = $token->[2];
3485: }
3486: return $currentstring;
3487: }
3488:
3489: #-- <ins> tag (end tag required)
3490: sub start_ins {
3491: my ($target,$token) = @_;
3492: my $currentstring = '';
3493: if ($target eq 'web' || $target eq 'webgrade') {
3494: $currentstring = $token->[4];
3495: }
3496: return $currentstring;
3497: }
3498:
3499: sub end_ins {
3500: my ($target,$token) = @_;
3501: my $currentstring = '';
3502: if ($target eq 'web' || $target eq 'webgrade') {
3503: $currentstring = $token->[2];
3504: }
3505: return $currentstring;
3506: }
3507:
3508: #-- <isindex> tag (end tag forbidden)
3509: sub start_isindex {
3510: my ($target,$token) = @_;
3511: my $currentstring = '';
3512: if ($target eq 'web' || $target eq 'webgrade') {
3513: $currentstring = $token->[4];
3514: }
3515: return $currentstring;
3516: }
3517:
3518: sub end_isindex {
3519: my ($target,$token) = @_;
3520: my $currentstring = '';
3521: if ($target eq 'web' || $target eq 'webgrade') {
3522: $currentstring = $token->[2];
3523: }
3524: return $currentstring;
3525: }
3526:
3527: #-- <keygen> tag (end tag forbidden)
3528: sub start_keygen {
3529: my ($target,$token) = @_;
3530: my $currentstring = '';
3531: if ($target eq 'web' || $target eq 'webgrade') {
3532: $currentstring = $token->[4];
3533: }
3534: return $currentstring;
3535: }
3536:
3537: sub end_keygen {
3538: my ($target,$token) = @_;
3539: my $currentstring = '';
3540: if ($target eq 'web' || $target eq 'webgrade') {
3541: $currentstring = $token->[2];
3542: }
3543: return $currentstring;
3544: }
3545:
3546: #-- <label> tag
3547: sub start_label {
3548: my ($target,$token) = @_;
3549: my $currentstring = '';
3550: if ($target eq 'web' || $target eq 'webgrade') {
3551: $currentstring = $token->[4];
3552: }
3553: return $currentstring;
3554: }
3555:
3556: sub end_label {
3557: my ($target,$token) = @_;
3558: my $currentstring = '';
3559: if ($target eq 'web' || $target eq 'webgrade') {
3560: $currentstring = $token->[2];
3561: }
3562: return $currentstring;
3563: }
3564:
3565: #-- <layer> tag (end tag required)
3566: sub start_layer {
3567: my ($target,$token) = @_;
3568: my $currentstring = '';
3569: if ($target eq 'web' || $target eq 'webgrade') {
3570: $currentstring = $token->[4];
3571: }
3572: return $currentstring;
3573: }
3574:
3575: sub end_layer {
3576: my ($target,$token) = @_;
3577: my $currentstring = '';
3578: if ($target eq 'web' || $target eq 'webgrade') {
3579: $currentstring = $token->[2];
3580: }
3581: return $currentstring;
3582: }
3583:
3584: #-- <legend> tag (end tag required)
3585: sub start_legend {
3586: my ($target,$token) = @_;
3587: my $currentstring = '';
3588: if ($target eq 'web' || $target eq 'webgrade') {
3589: $currentstring = $token->[4];
3590: }
3591: return $currentstring;
3592: }
3593:
3594: sub end_legend {
3595: my ($target,$token) = @_;
3596: my $currentstring = '';
3597: if ($target eq 'web' || $target eq 'webgrade') {
3598: $currentstring = $token->[2];
3599: }
3600: return $currentstring;
3601: }
3602:
3603: #-- <link> tag (end tag forbidden)
3604: sub start_link {
3605: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3606: my $currentstring = '';
3607: if ($target eq 'web' || $target eq 'webgrade') {
3608: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3609: undef,1);
3610: &Apache::lonxml::extlink($href);
3611: $currentstring = $token->[4];
3612: }
3613: return $currentstring;
3614: }
3615:
3616: sub end_link {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web' || $target eq 'webgrade') {
3620: $currentstring = $token->[2];
3621: }
3622: return $currentstring;
3623: }
3624:
3625: #-- <marquee> tag (end tag optional)
3626: sub start_marquee {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web' || $target eq 'webgrade') {
3630: $currentstring = $token->[4];
3631: }
3632: return $currentstring;
3633: }
3634:
3635: sub end_marquee {
3636: my ($target,$token) = @_;
3637: my $currentstring = '';
3638: if ($target eq 'web' || $target eq 'webgrade') {
3639: $currentstring = $token->[2];
3640: }
3641: return $currentstring;
3642: }
3643:
3644: #-- <multicol> tag (end tag required)
3645: sub start_multicol {
3646: my ($target,$token) = @_;
3647: my $currentstring = &end_p(); # Close any pending <p>
3648: if ($target eq 'web' || $target eq 'webgrade') {
3649: $currentstring .= $token->[4];
3650: }
3651: return $currentstring;
3652: }
3653:
3654: sub end_multicol {
3655: my ($target,$token) = @_;
3656: my $currentstring = '';
3657: if ($target eq 'web' || $target eq 'webgrade') {
3658: $currentstring = $token->[2];
3659: }
3660: return $currentstring;
3661: }
3662:
3663: #-- <nobr> tag (end tag required)
3664: sub start_nobr {
3665: my ($target,$token) = @_;
3666: my $currentstring = '';
3667: if ($target eq 'web' || $target eq 'webgrade') {
3668: $currentstring = $token->[4];
3669: } elsif ($target eq 'tex') {
3670: $currentstring='\mbox{';
3671: }
3672: return $currentstring;
3673: }
3674:
3675: sub end_nobr {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[2];
3680: } elsif ($target eq 'tex') {
3681: $currentstring='}';
3682: }
3683: return $currentstring;
3684: }
3685:
3686: #-- <noembed> tag (end tag required)
3687: sub start_noembed {
3688: my ($target,$token) = @_;
3689: my $currentstring = '';
3690: if ($target eq 'web' || $target eq 'webgrade') {
3691: $currentstring = $token->[4];
3692: }
3693: return $currentstring;
3694: }
3695:
3696: sub end_noembed {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web' || $target eq 'webgrade') {
3700: $currentstring = $token->[2];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: #-- <noframes> tag (end tag required)
3706: sub start_noframes {
3707: my ($target,$token) = @_;
3708: my $currentstring = '';
3709: if ($target eq 'web' || $target eq 'webgrade') {
3710: $currentstring = $token->[4];
3711: }
3712: return $currentstring;
3713: }
3714:
3715: sub end_noframes {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web' || $target eq 'webgrade') {
3719: $currentstring = $token->[2];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: #-- <nolayer> tag (end tag required)
3725: sub start_nolayer {
3726: my ($target,$token) = @_;
3727: my $currentstring = '';
3728: if ($target eq 'web' || $target eq 'webgrade') {
3729: $currentstring = $token->[4];
3730: }
3731: return $currentstring;
3732: }
3733:
3734: sub end_nolayer {
3735: my ($target,$token) = @_;
3736: my $currentstring = '';
3737: if ($target eq 'web' || $target eq 'webgrade') {
3738: $currentstring = $token->[2];
3739: }
3740: return $currentstring;
3741: }
3742:
3743: #-- <noscript> tag (end tag required)
3744: sub start_noscript {
3745: my ($target,$token) = @_;
3746: my $currentstring = '';
3747: if ($target eq 'web' || $target eq 'webgrade') {
3748: $currentstring = $token->[4];
3749: }
3750: return $currentstring;
3751: }
3752:
3753: sub end_noscript {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web' || $target eq 'webgrade') {
3757: $currentstring = $token->[2];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: #-- <object> tag (end tag required)
3763: sub start_object {
3764: my ($target,$token) = @_;
3765: my $currentstring = '';
3766: if ($target eq 'web' || $target eq 'webgrade') {
3767: $currentstring = $token->[4];
3768: }
3769: return $currentstring;
3770: }
3771:
3772: sub end_object {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web' || $target eq 'webgrade') {
3776: $currentstring = $token->[2];
3777: }
3778: return $currentstring;
3779: }
3780:
3781: #-- <optgroup> tag (end tag required)
3782: sub start_optgroup {
3783: my ($target,$token) = @_;
3784: my $currentstring = '';
3785: if ($target eq 'web' || $target eq 'webgrade') {
3786: $currentstring = $token->[4];
3787: }
3788: return $currentstring;
3789: }
3790:
3791: sub end_optgroup {
3792: my ($target,$token) = @_;
3793: my $currentstring = '';
3794: if ($target eq 'web' || $target eq 'webgrade') {
3795: $currentstring = $token->[2];
3796: }
3797: return $currentstring;
3798: }
3799:
3800: #-- <samp> tag (end tag required)
3801: sub start_samp {
3802: my ($target,$token) = @_;
3803: my $currentstring = '';
3804: if ($target eq 'web' || $target eq 'webgrade') {
3805: $currentstring = $token->[4];
3806: } elsif ($target eq 'tex') {
3807: $currentstring='\texttt{';
3808: }
3809: return $currentstring;
3810: }
3811:
3812: sub end_samp {
3813: my ($target,$token) = @_;
3814: my $currentstring = '';
3815: if ($target eq 'web' || $target eq 'webgrade') {
3816: $currentstring = $token->[2];
3817: } elsif ($target eq 'tex') {
3818: $currentstring='}';
3819: }
3820: return $currentstring;
3821: }
3822:
3823: #-- <server> tag
3824: sub start_server {
3825: my ($target,$token) = @_;
3826: my $currentstring = '';
3827: if ($target eq 'web' || $target eq 'webgrade') {
3828: $currentstring = $token->[4];
3829: }
3830: return $currentstring;
3831: }
3832:
3833: sub end_server {
3834: my ($target,$token) = @_;
3835: my $currentstring = '';
3836: if ($target eq 'web' || $target eq 'webgrade') {
3837: $currentstring = $token->[2];
3838: }
3839: return $currentstring;
3840: }
3841:
3842: #-- <spacer> tag (end tag forbidden)
3843: sub start_spacer {
3844: my ($target,$token) = @_;
3845: my $currentstring = &end_p(); # Close off any open <p> tag.
3846: if ($target eq 'web' || $target eq 'webgrade') {
3847: $currentstring .= $token->[4];
3848: }
3849: return $currentstring;
3850: }
3851:
3852: sub end_spacer {
3853: my ($target,$token) = @_;
3854: my $currentstring = '';
3855: if ($target eq 'web' || $target eq 'webgrade') {
3856: $currentstring = $token->[2];
3857: }
3858: return $currentstring;
3859: }
3860:
3861: #-- <span> tag (end tag required)
3862: sub start_span {
3863: my ($target,$token) = @_;
3864: my $currentstring = '';
3865: if ($target eq 'web' || $target eq 'webgrade') {
3866: $currentstring = $token->[4];
3867: }
3868: return $currentstring;
3869: }
3870:
3871: sub end_span {
3872: my ($target,$token) = @_;
3873: my $currentstring = '';
3874: if ($target eq 'web' || $target eq 'webgrade') {
3875: $currentstring = $token->[2];
3876: }
3877: return $currentstring;
3878: }
3879:
3880: #-- <tbody> tag (end tag optional)
3881: sub start_tbody {
3882: my ($target,$token) = @_;
3883: my $currentstring = '';
3884: if ($target eq 'web' || $target eq 'webgrade') {
3885: $currentstring = $token->[4];
3886: }
3887: return $currentstring;
3888: }
3889:
3890: sub end_tbody {
3891: my ($target,$token) = @_;
3892: my $currentstring = '';
3893: if ($target eq 'web' || $target eq 'webgrade') {
3894: $currentstring = $token->[2];
3895: }
3896: return $currentstring;
3897: }
3898:
3899: #-- <tfoot> tag (end tag optional)
3900: sub start_tfoot {
3901: my ($target,$token) = @_;
3902: my $currentstring = '';
3903: if ($target eq 'web' || $target eq 'webgrade') {
3904: $currentstring = $token->[4];
3905: }
3906: return $currentstring;
3907: }
3908:
3909: sub end_tfoot {
3910: my ($target,$token) = @_;
3911: my $currentstring = '';
3912: if ($target eq 'web' || $target eq 'webgrade') {
3913: $currentstring = $token->[2];
3914: }
3915: return $currentstring;
3916: }
3917:
3918: #-- <thead> tag (end tag optional)
3919: sub start_thead {
3920: my ($target,$token) = @_;
3921: my $currentstring = '';
3922: if ($target eq 'web' || $target eq 'webgrade') {
3923: $currentstring = $token->[4];
3924: }
3925: return $currentstring;
3926: }
3927:
3928: sub end_thead {
3929: my ($target,$token) = @_;
3930: my $currentstring = '';
3931: if ($target eq 'web' || $target eq 'webgrade') {
3932: $currentstring = $token->[2];
3933: }
3934: return $currentstring;
3935: }
3936:
3937: #-- <var> tag
3938: sub start_var {
3939: my ($target,$token) = @_;
3940: my $currentstring = '';
3941: if ($target eq 'web' || $target eq 'webgrade') {
3942: $currentstring = $token->[4];
3943: } elsif ($target eq 'tex') {
3944: $currentstring = '\textit{';
3945: }
3946: return $currentstring;
3947: }
3948:
3949: sub end_var {
3950: my ($target,$token) = @_;
3951: my $currentstring = '';
3952: if ($target eq 'web' || $target eq 'webgrade') {
3953: $currentstring = $token->[2];
3954: } elsif ($target eq 'tex') {
3955: $currentstring = '}';
3956: }
3957: return $currentstring;
3958: }
3959:
3960: #-- <wbr> tag (end tag forbidden)
3961: sub start_wbr {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[4];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: sub end_wbr {
3971: my ($target,$token) = @_;
3972: my $currentstring = '';
3973: if ($target eq 'web' || $target eq 'webgrade') {
3974: $currentstring = $token->[2];
3975: }
3976: return $currentstring;
3977: }
3978:
3979: #-- <hideweboutput> tag
3980: sub start_hideweboutput {
3981: my ($target,$token) = @_;
3982: if ($target eq 'web' || $target eq 'webgrade') {
3983: &Apache::lonxml::startredirection();
3984: }
3985: return '';
3986: }
3987:
3988: sub end_hideweboutput {
3989: my ($target,$token) = @_;
3990: my $currentstring = '';
3991: if ($target eq 'web' || $target eq 'webgrade') {
3992: $currentstring = &Apache::lonxml::endredirection();
3993: }
3994: return '';
3995: }
3996:
3997:
3998: sub image_replication {
3999: my $src = shift;
4000: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4001: #replicates eps or ps
4002: my $epssrc = my $pssrc = $src;
4003: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4004: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4005: if (not -e $epssrc && not -e $pssrc) {
4006: my $result=&Apache::lonnet::repcopy($epssrc);
4007: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4008: }
4009: return '';
4010: }
4011:
4012:
4013:
4014: sub resize_image {
4015: my ($height_param, $width_param, $scaling,
4016: $parstack, $safeeval, $depth, $cis) = @_;
4017:
4018: # First apply the scaling...
4019:
4020: $height_param = $height_param * $scaling;
4021: $width_param = $width_param * $scaling;
4022:
4023: #do we have any specified LaTeX size of the picture?
4024: my $toget='TeXwidth';
4025: if ($cis) {
4026: $toget=lc($toget);
4027: }
4028: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4029: $safeeval,$depth,$cis);
4030: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4031: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4032: $safeeval,$depth,$cis);
4033: #do we have any specified web size of the picture?
4034: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4035: $depth,1);
4036: if ($TeXwidth) {
4037: my $old_width_param=$width_param;
4038: if ($TeXwidth=~/(\d+)\s*\%/) {
4039: $width_param = $1*$env{'form.textwidth'}/100;
4040: } else {
4041: $width_param = $TeXwidth;
4042: }
4043: if ($TeXheight) {
4044: $height_param = $TeXheight;
4045: } elsif ($old_width_param) {
4046: $height_param=$TeXwidth/$old_width_param*$height_param;
4047: }
4048: } elsif ($TeXheight) {
4049: $height_param = $TeXheight;
4050: if ($height_param) {
4051: $width_param = $TeXheight/$height_param*$width_param;
4052: }
4053: } elsif ($width) {
4054: my $old_width_param=$width_param;
4055: $width_param = $width*$scaling;
4056: if ($old_width_param) {
4057: $height_param=$width_param/$old_width_param*$height_param;
4058: }
4059: }
4060: if ($width_param > $env{'form.textwidth'}) {
4061: my $old_width_param=$width_param;
4062: $width_param =0.95*$env{'form.textwidth'};
4063: if ($old_width_param) {
4064: $height_param=$width_param/$old_width_param*$height_param;
4065: }
4066: }
4067:
4068: return ($height_param, $width_param);
4069: }
4070:
4071: sub image_size {
4072: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4073:
4074: #size of image from gif/jpg/jpeg/png
4075: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4076: if (-e $ressrc) {
4077: $src = $ressrc;
4078: }
4079: my $image = Image::Magick->new;
4080: my $current_figure = $image->Read($src);
4081: my $width_param = $image->Get('width');
4082: my $height_param = $image->Get('height');
4083: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4084: undef($image);
4085:
4086: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4087: $scaling, $parstack, $safeeval,
4088: $depth, $cis);
4089:
4090: return ($height_param, $width_param);
4091: }
4092:
4093: sub image_width {
4094: my ($height, $width) = &image_size(@_);
4095: return $width;
4096: }
4097: # Not yet 100% sure this is correct in all circumstances..
4098: # due to my uncertainty about mods to image_size.
4099: #
4100: sub image_height {
4101: my ($height, $width) = &image_size(@_);
4102: return $height;
4103: }
4104:
4105: sub get_eps_image {
4106: my ($src)=@_;
4107: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4108:
4109: # In order to prevent the substitution of the alt text, we need to
4110: # be sure the orig_src file is on system now so:
4111:
4112: if (! -e $orig_src) {
4113: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4114: }
4115: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4116: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
4117: $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
4118: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4119: &Apache::lonxml::debug("Filelocation gives: $src");
4120: if (! -e $src) {
4121: &Apache::lonxml::debug("$src does not exist");
4122: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4123: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4124: #if replication failed try to find ps file
4125: $src=~s/\.eps$/\.ps/;
4126: &Apache::lonxml::debug("Now looking for $src");
4127: #if no ps file try to replicate it.
4128: my $didrepcopy = &Apache::lonnet::repcopy($src);
4129: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4130: if ( (not -e $src) ||
4131: ($didrepcopy ne 'ok')) {
4132: &Apache::lonxml::debug("Failed to find or replicate $src");
4133:
4134: #if replication failed try to produce eps file dynamically
4135: $src=~s/\.ps$/\.eps/;
4136: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4137: my $newsrc=$orig_src;
4138: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4139: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4140: print FILE ("$newsrc\n");
4141: close(FILE);
4142: }
4143: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4144: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4145: if ($sext ne "") { # Put the ext. back in to uniquify.
4146: $src =~ s/\.eps$/$sext.eps/;
4147: }
4148:
4149: }
4150:
4151: }
4152: } else {
4153: # If the postscript file has spaces in its name,
4154: # LaTeX will gratuitiously vomit. Therefore
4155: # queue such files for copy with " " replaced by "_".
4156: # printout.pm will know them by their .ps or .eps extensions.
4157: my $newsrc = $orig_src;
4158: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4159: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4160: print FILE "$src\n";
4161: close FILE;
4162: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4163: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4164: }
4165: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4166: $path =~ s/ /\_/g;
4167: $file =~ s/ /\_/g;
4168: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4169: return ($path.'/',$file);
4170: }
4171:
4172: sub eps_generation {
4173: my ($src,$file,$width_param) = @_;
4174: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4175: if (open(my $tmpfile,">>$filename")) {
4176: print $tmpfile "$src\n";
4177: close($tmpfile);
4178: }
4179: my $newsrc = $src;
4180: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4181: $newsrc=~s{/home/httpd/html/res}{};
4182: $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
4183: $newsrc=~s{/\./}{/};
4184: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4185: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4186: $newsrc=~s{/home/httpd/lonUsers}{};
4187: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4188: }
4189: if ($newsrc=~m{/userfiles/}) {
4190: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4191: } else {
4192: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4193: }
4194: }
4195:
4196: sub file_path {
4197: my $src=shift;
4198: my ($file,$path);
4199: if ($src =~ m!(.*)/([^/]*)$!) {
4200: $file = $2;
4201: $path = $1.'/';
4202: }
4203: return $file,$path;
4204: }
4205:
4206:
4207: sub recalc {
4208: my $argument = shift;
4209: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4210: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4211: my $value=$1;
4212: my $units=$2;
4213: if ($units eq 'cm') {
4214: $value*=10;
4215: } elsif ($units eq 'in') {
4216: $value*=25.4;
4217: } elsif ($units eq 'pc') {
4218: $value*=(25.4*12/72.27);
4219: } elsif ($units eq 'pt') {
4220: $value*=(25.4/72.27);
4221: }
4222: return $value.' mm';
4223: }
4224:
4225: sub LATEX_length {
4226: my $garbage=shift;
4227: $garbage=~s/^\s+$//;
4228: $garbage=~s/^\s+(\S.*)/$1/;#space before
4229: $garbage=~s/(.*\S)\s+$/$1/;#space after
4230: $garbage=~s/(\s)+/$1/;#only one space
4231: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4232: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4233: $garbage=~s/([^\\])\$/$1/g;#$
4234: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4235: $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;
4236: $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;
4237: $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;
4238: $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;
4239: $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;
4240: $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;
4241: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4242: #remove some other LaTeX command
4243: $garbage=~s|\\(\w+)\\|\\|g;
4244: $garbage=~s|\\(\w+)(\s*)|$2|g;
4245: $garbage=~s|\+|11|g;
4246: my $value=length($garbage);
4247: return $value;
4248: }
4249:
4250:
4251: sub align_latex_image {
4252: my ($align, $latex_rendering, $image, $width, $height) = @_;
4253: my $currentstring; # The 1/2 wrapped image.
4254: my $closure; # The closure of the wrappage.
4255:
4256: # if it's none just return it back
4257: if ($latex_rendering eq 'none') {
4258: return ($image,'');
4259: }
4260:
4261: # If there's an alignment specification we need to honor it here.
4262: # For the horizontal alignments, we will also honor the
4263: # value of the latex specfication. The default is parbox,
4264: # and that's used for illegal values too.
4265: #
4266: # Even though we set a default alignment value, the user
4267: # could have given us an illegal value. In that case we
4268: # just use the default alignment of bottom..
4269: $currentstring = '';
4270: if ($align eq "top") {
4271: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4272: $closure = '}';
4273: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4274: my $offset = $height/2;
4275: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4276: $closure = '}';
4277: } elsif ($align eq "left") {
4278: if ($latex_rendering eq "parpic") {
4279: $currentstring .= '\parpic[l]{'.$image;
4280: $closure = '}';
4281: } elsif ($latex_rendering eq "parbox") {
4282: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4283: .$image;
4284: $closure = '\end{minipage}';
4285: } elsif ($latex_rendering eq "wrapfigure"
4286: || $latex_rendering ne 'none') { # wrapfig render
4287: $currentstring .=
4288: '\begin{wrapfigure}{l}{'.$width.'mm}'
4289: .'\scalebox{1.0}{'.$image;
4290: $closure = '}\end{wrapfigure}';
4291: }
4292: } elsif ($align eq "right") {
4293: if ($latex_rendering eq "parpic") {
4294: $currentstring .= '\parpic[r]{'.$image;
4295: $closure = '}';
4296: } elsif ($latex_rendering eq "parbox") {
4297: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4298: .$image;
4299: $closure = '\end{minipage}';
4300: } elsif ($latex_rendering eq "wrapfigure"
4301: || $latex_rendering ne 'none') { # wrapfig render
4302: $currentstring .=
4303: '\begin{wrapfigure}{r}{'.$width.'mm}'
4304: .'\scalebox{1.0}{'.$image;
4305: $closure = '}\end{wrapfigure}';
4306: }
4307: } else { # Bottom is also default.
4308: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4309: $currentstring .= "{$image";
4310: $closure = '}';
4311: }
4312: return ($currentstring, $closure);
4313: }
4314:
4315:
4316: sub is_inside_of {
4317: my ($tagstack, $tag) = @_;
4318: my @stack = @$tagstack;
4319: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4320: if ($stack[$i] eq $tag) {
4321: return 1;
4322: }
4323: }
4324: return 0;
4325: }
4326:
4327:
4328: #
4329: # This sub provides the typical LaTeX prefix matter for tex output:
4330: #
4331: sub latex_header {
4332: my ($mode) = @_;
4333: my $currentstring = '';
4334:
4335: $currentstring .=
4336: "\n% &Apache::lonxml::londefdef \n" .
4337: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4338: if (($env{'form.latex_type'}=~'batchmode') ||
4339: (!$env{'request.role.adv'}) ||
4340: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4341: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4342: '\renewcommand{\deg}{$^{\circ}$}'.
4343: '\usepackage{multirow}'.
4344: '\usepackage{longtable}'.
4345: '\usepackage{textcomp}'.
4346: '\usepackage{makeidx}'.
4347: '\usepackage[dvips]{graphicx}'.
4348: '\usepackage{wrapfig}'.
4349: '\usepackage{picins}'.
4350: '\usepackage[T1]{fontenc}'."\n".
4351: '\usepackage{lmodern}'."\n".
4352: '\usepackage[postscript]{ucs}'."\n".
4353: '\usepackage[utf8x]{inputenc}'."\n".
4354: '\usepackage{pifont}' ."\n".
4355: '\usepackage{latexsym}'."\n".
4356: '\usepackage{epsfig}'.
4357: "\\usepackage{xtab}\n".
4358: "\\usepackage{tabularx}\n".
4359: "\\usepackage{booktabs}\n".
4360: "\\usepackage{array}\n".
4361: "\\usepackage{colortbl}\n".
4362: "\\usepackage{xcolor}\n".
4363: '\usepackage{calc}'.
4364: '\usepackage{amsmath}'.
4365: '\usepackage{soul}',
4366: '\usepackage{amssymb}'.
4367: '\usepackage{amsfonts}'.
4368: '\usepackage{amsthm}'.
4369: '\usepackage{amscd}'
4370: .'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
4371: '\usepackage[T1]{fontenc}'."\n".
4372: '\usepackage{lmodern}'."\n".
4373: '\usepackage[postscript]{ucs}'."\n".
4374: '\usepackage[utf8x]{inputenc}'."\n".
4375: '\usepackage{pifont}' . "\n";
4376:
4377: if($env{'form.pdfFormFields'} eq 'yes') {
4378: $currentstring .= '\usepackage{hyperref}'.
4379: '\usepackage{eforms}'.
4380: '\usepackage{tabularx}';
4381: }
4382:
4383: $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}}'.
4384: '\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}}';
4385: $currentstring .= '\begin{document}';
4386:
4387: return $currentstring;
4388:
4389: }
4390:
4391: =pod
4392:
4393: =head1 NAME
4394:
4395: Apache::londefdef.pm
4396:
4397: =head1 SYNOPSIS
4398:
4399: Tags Default Definition Module
4400:
4401: This is part of the LearningOnline Network with CAPA project
4402: described at http://www.lon-capa.org.
4403:
4404:
4405: =head1 NOTABLE SUBROUTINES
4406:
4407: =over
4408:
4409: =item start_hideweboutput()
4410:
4411: =item end_hideweboutput()
4412:
4413: =item image_replication()
4414:
4415: =item resize_image()
4416:
4417: Get correct sizing parameter for an image given
4418: it's initial ht. and wid. This allows sizing of
4419: images that are generated on-the-fly (e.g. gnuplot)
4420: as well as serving as a utility for image_size.
4421:
4422: Parameter:
4423: height_param
4424: width_param - Initial picture dimensions.
4425: scaling - A scale factor.
4426: parstack, - the current stack of tag attributes
4427: from the xml parser
4428: safeeval, - pointer to the safespace
4429: depth, - from what level in the stack to look for attributes
4430: (assumes -1 if unspecified)
4431: cis - look for attrubutes case insensitively
4432: (assumes false)
4433:
4434: Returns:
4435: height, width - new dimensions.
4436:
4437: =item image_size()
4438:
4439: =item image_width()
4440:
4441: =item image_height()
4442:
4443: =item get_eps_image()
4444:
4445: =item eps_generation()
4446:
4447: =item file_path()
4448:
4449: =item recalc()
4450:
4451: Converts a measurement in to mm from any of
4452: the other valid LaTeX units of measure.
4453: If the units of measure are missing from the
4454: parameter, it is assumed to be in and returned
4455: with mm units of measure
4456:
4457: =item LATEX_length()
4458:
4459: =item align_latex_image()
4460:
4461: Wrap image 'stuff' inside of the LaTeX required to implement
4462: alignment:
4463: align_tex_image(align, latex_rendering, image)
4464: Where:
4465: align - The HTML alignment specification.
4466: latex_rendering - rendering hint for latex.
4467: image - The LaTeX needed to insert the image itsef.
4468: width,height - dimensions of the image.
4469: Returns:
4470: The 1/2 wrapped image and the stuff required to close the
4471: wrappage. This allows e.g. randomlabel to insert more stuff
4472: into the closure.
4473:
4474:
4475: =item is_inside_of($tagstack, $tag)
4476: This sub returns true if the current state of Xml processing is inside of the tag.
4477: Parameters:
4478: tagstack - The tagstack from the parser.
4479: tag - The tag (without the <>'s.).
4480: Sample usage:
4481: if (is_inside_of($tagstack "table")) {
4482: I'm in a table....
4483: }
4484:
4485:
4486:
4487: =back
4488:
4489: =cut
4490:
4491:
4492: 1;
4493: __END__
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