1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.456.2.6.2.3 2023/12/29 23:33:43 raeburn Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use 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','style','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: if (!($inside =~ /^\s*\$.*\$\s*$/ || $inside =~ /^\s*\\[([].*\\[)\]]\s*$/)) {
96: # Non-math LaTeX will not be rendered correctly with MathJax
97: # and it should be avoided anyway.
98: # On top of that, MathJax will render math without $, but
99: # it will fail with tth. This is worth a warning.
100: # (even though some people might just use latex for printing)
101: &Apache::lonxml::warning(&mt('Missing $ in [_1].','<m>'));
102: } elsif (($env{'browser.type'} eq 'safari') && ($env{'form.editxmltext'}) &&
103: (($env{'form.problemmode'} eq 'view') || ($env{'form.problemmode'} eq 'discard'))) {
104: my $delimiter;
105: if ($inside =~ /\$$/) {
106: $delimiter = '$';
107: } elsif ($inside =~ /\\([)\]])$/) {
108: $delimiter = $1;
109: }
110: if ($delimiter) {
111: &Apache::lonxml::warning(&mt('Insert a space between [_1] and [_2].',
112: $delimiter,'</m>'));
113: }
114: }
115: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
116: if ($eval eq 'on') {
117: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
118: #&Apache::lonxml::debug("M is evaluated to:$inside:");
119: }
120: my $tex = $inside;
121: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
122: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
123: if ($Apache::lontexconvert::errorstring) {
124: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
125: $tex = &HTML::Entities::encode($tex,'<>&"');
126: my ($linenumber) =
127: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
128: if (defined($linenumber)) {
129: my @tex=split("\n",$tex);
130: $tex[$linenumber]='<b><font color="red">'.
131: $tex[$linenumber].'</font></b>';
132: $tex=join("\n",@tex);
133: }
134: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
135: $Apache::lontexconvert::errorstring='';
136: }
137: #&Apache::lonxml::debug("M is ends with:$currentstring:");
138: $Apache::lonxml::post_evaluate=0;
139: } elsif ($target eq 'tex') {
140:
141: $currentstring = $inside;
142: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
143: if ($eval eq 'on') {
144: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
145: }
146: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
147: # detect simple math mode entry exits, and convert them
148: # to use \ensuremath ... unless there's a \verb inside.
149: if (! ($currentstring=~/\\verb/)) {
150: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
151: $currentstring=~s/^(\s*)\$/$1/;
152: $currentstring=~s/\$(\s*)$/$1/;
153: $currentstring='\ensuremath{'.$currentstring.'}';
154: }
155: }
156: $Apache::lonxml::post_evaluate=0;
157: }
158: return $currentstring;
159: }
160:
161: sub end_m {
162: my ($target,$token) = @_;
163: my $currentstring = '';
164: if ($target eq 'tex') {
165: $currentstring = "";
166: }
167: return $currentstring;
168: }
169:
170: sub start_tthoption {
171: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
172: my $result;
173: if ($target eq 'web' || $target eq 'webgrade') {
174: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
175: $style);
176: $inside=~s/^\s*//;
177: if ($env{'browser.mathml'}) {
178: &tth::ttmoptions($inside);
179: } else {
180: &tth::tthoptions($inside);
181: }
182: }
183: return $result;
184: }
185:
186: sub end_tthoption {
187: my ($target,$token) = @_;
188: my $result;
189: return $result;
190: }
191:
192: #-- <html> tag (end tag optional)
193: sub start_html {
194: my ($target,$token) = @_;
195: my $currentstring = '';
196: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
197: # start_body() takes care of emitting the <html>
198: } elsif ($target eq 'tex') {
199:
200: $currentstring .= &latex_header();
201: }
202: return $currentstring;
203: }
204:
205: sub end_html {
206: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
207: my $currentstring = '';
208: if ($target eq 'web' || $target eq 'webgrade') {
209: # end_body takes care of the </html>
210: }
211: return $currentstring;
212: }
213:
214: #-- <head> tag (end tag optional)
215: sub start_head {
216: my ($target,$token) = @_;
217: my $currentstring = '';
218: if ($target eq 'web' || $target eq 'webgrade') {
219: &Apache::lonxml::startredirection();
220: }
221: return $currentstring;
222: }
223:
224: sub end_head {
225: my ($target,$token) = @_;
226: my $currentstring = '';
227: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
228: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
229: # in case there is a </head> but no <head>
230: if ($Apache::lonxml::redirection) {
231: $Apache::londefdef::head = &Apache::lonxml::endredirection();
232: }
233: }
234: return $currentstring;
235: }
236:
237: #-- <map> tag (end tag required)
238: sub start_map {
239: my ($target,$token) = @_;
240: my $currentstring = '';
241: if ($target eq 'web' || $target eq 'webgrade') {
242: $currentstring = $token->[4];
243: }
244: return $currentstring;
245: }
246:
247: sub end_map {
248: my ($target,$token) = @_;
249: my $currentstring = '';
250: if ($target eq 'web' || $target eq 'webgrade') {
251: $currentstring = $token->[2];
252: }
253: return $currentstring;
254: }
255:
256: #-- <select> tag (end tag required)
257: sub start_select {
258: my ($target,$token) = @_;
259: my $currentstring = '';
260: if ($target eq 'web' || $target eq 'webgrade') {
261: $currentstring = $token->[4];
262: } elsif ($target eq 'tex') {
263: $Apache::londefdef::select=0;
264: }
265: return $currentstring;
266: }
267:
268: sub end_select {
269: my ($target,$token) = @_;
270: my $currentstring = '';
271: if ($target eq 'web' || $target eq 'webgrade') {
272: $currentstring = $token->[2];
273: }
274: return $currentstring;
275: }
276:
277: #-- <option> tag (end tag optional)
278: sub start_option {
279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
280: my $currentstring = '';
281: if ($target eq 'web' || $target eq 'webgrade') {
282: $currentstring = $token->[4];
283: } elsif ($target eq 'tex') {
284: $Apache::londefdef::select++;
285: if ($Apache::londefdef::select == 1) {
286: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
287: } else {
288: $currentstring='\keephidden{';
289: }
290: }
291: return $currentstring;
292: }
293:
294: sub end_option {
295: my ($target,$token) = @_;
296: my $currentstring = '';
297: if ($target eq 'web' || $target eq 'webgrade') {
298: $currentstring = $token->[2];
299: } elsif ($target eq 'tex') {
300: $currentstring='}';
301: }
302: return $currentstring;
303: }
304:
305: #-- <input> tag (end tag forbidden)
306: sub start_input {
307: my ($target,$token) = @_;
308: my $currentstring = '';
309: if ($target eq 'web' || $target eq 'webgrade') {
310: $currentstring = $token->[4];
311: }
312: return $currentstring;
313: }
314:
315: sub end_input {
316: my ($target,$token) = @_;
317: my $currentstring = '';
318: if ($target eq 'web' || $target eq 'webgrade') {
319: $currentstring = $token->[2];
320: }
321: return $currentstring;
322: }
323:
324: #-- <textarea> tag (end tag required)
325: sub start_textarea {
326: my ($target,$token) = @_;
327: my $currentstring = '';
328: if ($target eq 'web' || $target eq 'webgrade') {
329: $currentstring = $token->[4];
330: }
331: return $currentstring;
332: }
333:
334: sub end_textarea {
335: my ($target,$token) = @_;
336: my $currentstring = '';
337: if ($target eq 'web' || $target eq 'webgrade') {
338: $currentstring = $token->[2];
339: }
340: return $currentstring;
341: }
342:
343: #-- <form> tag (end tag required)
344: sub start_form {
345: my ($target,$token) = @_;
346: my $currentstring = '';
347: if ($target eq 'web' || $target eq 'webgrade') {
348: $currentstring = $token->[4];
349: }
350: return $currentstring;
351: }
352:
353: sub end_form {
354: my ($target,$token) = @_;
355: my $currentstring = '';
356: if ($target eq 'web' || $target eq 'webgrade') {
357: $currentstring = $token->[2];
358: }
359: return $currentstring;
360: }
361:
362: #-- <title> tag (end tag required)
363: sub start_title {
364: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
365: my $currentstring = '';
366: if ($target eq 'web' || $target eq 'webgrade') {
367: $Apache::londefdef::title =
368: &Apache::lonxml::get_all_text('/title',$parser,$style);
369: } elsif ($target eq 'tex') {
370: $currentstring .= '\keephidden{Title of the document: ';
371: }
372: if ($target eq 'meta') {
373: $currentstring='<title>';
374: &start_output($target);
375: }
376: return $currentstring;
377: }
378:
379: sub end_title {
380: my ($target,$token) = @_;
381: my $currentstring = '';
382: if ($target eq 'web' || $target eq 'webgrade') {
383: # start_title takes care of swallowing the title
384: } elsif ($target eq 'tex') {
385: $currentstring .= '}';
386: }
387: if ($target eq 'meta') {
388: &end_output($target);
389: $currentstring='</title>';
390: }
391: return $currentstring;
392: }
393:
394: #-- <meta> tag (end tag forbidden)
395: sub start_meta {
396: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
397: my $currentstring = '';
398: if ($target eq 'web' || $target eq 'webgrade') {
399: my $args='';
400: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
401: if ($args eq '') {
402: &Apache::lonxml::get_all_text("/meta",$parser,$style);
403: } else {
404: $currentstring = $token->[4];
405: }
406: if ($env{'form.grade_imsexport'}) {
407: $currentstring = '';
408: }
409: } elsif ($target eq 'meta') {
410: unless (&Apache::lonxml::get_param
411: ('http-equiv',$parstack,$safeeval,undef,1)) {
412: my $name=$token->[2]->{'name'};
413: $name=~tr/A-Z/a-z/;
414: $name=~s/\s/\_/gs;
415: $name=~s/\W//gs;
416: if ($name) {
417: $currentstring='<'.$name;
418: my $display=&Apache::lonxml::get_param
419: ('display',$parstack,$safeeval,undef,1);
420: if ($display) {
421: $display=~s/\"/\'/g;
422: $currentstring.=' display="'.$display.'"';
423: }
424: $currentstring.='>'.
425: &Apache::lonxml::get_param
426: ('content',$parstack,$safeeval,undef,1).
427: '</'.$name.'>';
428: }
429: my $display=&Apache::lonxml::get_param
430: ('display',$parstack,$safeeval,undef,1);
431: if ($display) {
432: $display=&HTML::Entities::encode($display,'<>&"');
433: $currentstring.='<'.$name.'.display>'.$display.
434: '</'.$name.'.display>';
435: }
436: }
437: } elsif ($target eq 'tex') {
438: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
439: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
440: if ((not defined $content) && (not defined $name)) {
441: &Apache::lonxml::startredirection();
442: }
443: } elsif ($target eq 'edit') {
444: $currentstring .= &Apache::edit::tag_start($target,$token);
445: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
446: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
447: $currentstring .= &Apache::edit::end_row();
448: } elsif ($target eq 'modified') {
449: my $constructtag =
450: &Apache::edit::get_new_args($token,$parstack,$safeeval,
451: 'name','content');
452: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
453: }
454: return $currentstring;
455: }
456:
457: sub end_meta {
458: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
459: my $currentstring = '';
460: if ($target eq 'web' || $target eq 'webgrade') {
461: my $args='';
462: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
463: if ($args ne '') {
464: $currentstring = $token->[4];
465: }
466: } elsif ($target eq 'tex') {
467: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
468: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
469: if ((not defined $content) && (not defined $name)) {
470: &Apache::lonxml::endredirection();
471: }
472: }
473: return $currentstring;
474: }
475:
476: sub insert_meta {
477: return '
478: <meta />';
479: }
480:
481: #-- <start> tag
482: sub start_style {
483: my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
484: my $currentstring = '';
485:
486: if ($target eq 'tex') {
487: Apache::lonxml::startredirection();
488: } else {
489: $currentstring = $token->[4];
490: }
491:
492: return $currentstring;
493: }
494:
495: sub end_style {
496: my ($target, $token, $tagstack, $parstack, $parser, $safeeval) = @_;
497: my $currentstring = '';
498:
499: if ($target eq 'tex') {
500: Apache::lonxml::endredirection();
501: } else {
502: $currentstring = $token->[2];
503: }
504: return $currentstring;
505: }
506:
507: # accessrule
508: sub start_accessrule {
509: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
510: my $currentstring = '';
511: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
512: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
513: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
514: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
515:
516: my ($dom,$crs,$sec,$separator);
517: if ($type eq 'user') {
518: ($dom,$crs,$sec)=split(m{/},$realm);
519: $crs = &LONCAPA::clean_username($crs);
520: $separator = '/';
521: } else {
522: ($dom,$crs,$sec)=split(/\_/,$realm);
523: $crs = &LONCAPA::clean_courseid($crs);
524: $separator = '_';
525: }
526: $dom = &LONCAPA::clean_domain($dom);
527:
528: $sec =~s/\W//;
529: $realm = $dom;
530: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
531: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
532: $role=~s/\W//g;
533:
534: if ($target eq 'web') {
535: my $args='';
536: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
537: if ($args eq '') {
538: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
539: } else {
540: $currentstring = $token->[4];
541: }
542: }
543: if ($target eq 'meta') {
544: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
545: }
546: return $currentstring;
547: }
548:
549: sub end_accessrule {
550: my ($target,$token,$tagstack,$parstack,$parser) = @_;
551: my $currentstring = '';
552: if ($target eq 'web') {
553: my $args='';
554: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
555: if ($args ne '') {
556: $currentstring = $token->[4];
557: }
558: }
559: return $currentstring;
560: }
561:
562: sub generate_css_links {
563: my $links;
564: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
565: if ($css_href =~ /\S/) {
566: &Apache::lonxml::extlink($css_href);
567: $links .=
568: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
569: }
570: return $links;
571: }
572:
573: #-- <body> tag (end tag required)
574: sub start_body {
575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
576: my $currentstring = '';
577:
578: if ($target eq 'web' || $target eq 'webgrade') {
579: if ($Apache::lonhomework::parsing_a_problem) {
580: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
581: return '';
582: }
583:
584: if (&is_inside_of($tagstack, "head")) {
585: &end_head(@_);
586: }
587:
588: my $extra_head = &generate_css_links();
589:
590: # Breadcrumbs
591: &Apache::lonhtmlcommon::clear_breadcrumbs();
592: if ($env{'request.state'} eq 'construct') {
593: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
594: &Apache::lonhtmlcommon::add_breadcrumb({
595: 'text' => 'Authoring Space',
596: 'href' => &Apache::loncommon::authorspace($url),
597: });
598: &Apache::lonhtmlcommon::add_breadcrumb({
599: 'text' => 'HTML Editor',
600: 'href' => '',
601: });
602: # breadcrumbs (and tools) will be created
603: # in start_page->bodytag->innerregister
604: } else {
605: # FIXME Where are we?
606: }
607:
608: my $args = {'add_entries' => $token->[2],
609: 'force_register' => 1,};
610: if ($target eq 'web') {
611: $args->{'print_suppress'} = 1;
612: if ($env{'request.use_absolute'}) {
613: $args->{'use_absolute'} = $env{'request.use_absolute'};
614: }
615: if ($env{'form.only_body'}) {
616: $args->{'only_body'} = 1;
617: }
618: }
619: $currentstring =
620: &Apache::loncommon::start_page($Apache::londefdef::title,
621: $Apache::londefdef::head
622: .$extra_head,$args);
623: my $header = '';
624: if ($env{'request.state'} ne 'published' &&
625: $env{'request.state'} ne 'construct') {
626: $header=&Apache::lonmenu::constspaceform();
627: }
628: if ($env{'request.state'} ne 'published') {
629: unless ($env{'form.inhibitmenu'} eq 'yes') {
630: $header.=&edit_controls();
631: }
632: }
633: if ($env{'request.state'} eq 'construct') {
634: unless ($env{'form.inhibitmenu'} eq 'yes') {
635: $currentstring.=&Apache::loncommon::head_subbox(
636: &Apache::loncommon::CSTR_pageheader()
637: .$header);
638: }
639: } elsif ($env{'request.state'} eq 'edit') {
640: $currentstring.=&Apache::loncommon::head_subbox($header);
641: }
642: $currentstring.=&Apache::lonxml::message_location();
643: } elsif ($target eq 'tex') {
644: $currentstring = ''; # '\begin{document}' is in header.
645: }
646:
647: return $currentstring;
648: }
649:
650: sub edit_controls {
651: my ($nochgview) = @_;
652: my $result = &Apache::lonxml::seteditor_javascript().'
653: <form method="post" action="">
654: <div class="LC_edit_problem_header">'."\n";
655: unless ($nochgview) {
656: $result .= '
657: <div class="LC_edit_problem_header_row1">'.
658: &Apache::lonxml::renderingoptions().'
659: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
660: </div>';
661: }
662: $result .= '
663: <div>
664: <input type="hidden" name="editmode" value="" />
665: <input type="button" name="editordefault" accesskey="e" value="'.&mt('Edit').
666: '" onclick="seteditmode(this.form,'."'edit'".');" />'."\n";
667: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
668: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
669: if ($url =~ /\.html?$/i) {
670: my ($cdom,$cnum);
671: if ($env{'request.course.id'}) {
672: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
673: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
674: if ($env{'request.filename'} =~ m{/userfiles/supplemental/default|\d+/}) {
675: if (&Apache::lonnet::is_course_upload($env{'request.filename'},
676: $cnum,$cdom)) {
677: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
678: ['folderpath','title']);
679: }
680: }
681: }
682: my ($symb,$itemtitle,$displayfile,$caller);
683: if ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/}) {
684: $itemtitle = &mt('Syllabus');
685: $caller = "/public/$cdom/$cnum/syllabus";
686: } else {
687: $caller = $url;
688: ($symb,$itemtitle,$displayfile) =
689: &Apache::lonxml::get_courseupload_hierarchy($url,
690: $env{'form.folderpath'},
691: $env{'form.title'});
692: }
693: if (($symb ne '') || ($env{'httpref.'.$url} ne '') ||
694: ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/})) {
695: $result .= (' ' x 3).
696: &Apache::lonhtmlcommon::dependencies_button()."\n".
697: &Apache::lonhtmlcommon::dependencycheck_js($symb,
698: $itemtitle,$url,$env{'form.folderpath'},$caller)."\n";
699: }
700: }
701: }
702: $result .= '</div>
703: </div>
704: </form>
705: ';
706: return $result;
707: }
708:
709: sub end_body {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
711: my $currentstring = &end_p(); # Close off unclosed <p>
712: if ($target eq 'web' || $target eq 'webgrade') {
713: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
714: } elsif ($target eq 'tex') {
715: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
716: }
717: return $currentstring;
718: }
719:
720: # \begin{center} causes a new paragprah spacing that looks odd inside
721: # of a table cell. Same at the end of a \center but with a slightly
722: # larger space .. hence center_correction and center_end_correction.
723: #
724: sub center_correction { return '\vspace*{-6 mm}'; }
725: sub center_end_correction { return '\vspace*{-7 mm}'; }
726:
727: #-- <center> tag (end tag required)
728: sub start_center {
729: my ($target,$token,$tagstack) = @_;
730: my $currentstring = &end_p(); # Close off any prior para.
731: if ($target eq 'web' || $target eq 'webgrade') {
732: $currentstring .= $token->[4];
733: } elsif ($target eq 'tex') {
734: if (&is_inside_of($tagstack, "table")) {
735: $currentstring .= ¢er_correction();
736: }
737: $currentstring .= '\begin{center}';
738: }
739: return $currentstring;
740: }
741:
742: sub end_center {
743: my ($target,$token,$tagstack) = @_;
744: my $currentstring = '';
745: if ($target eq 'web' || $target eq 'webgrade') {
746: $currentstring = $token->[2];
747: } elsif ($target eq 'tex') {
748: $currentstring = '\end{center}';
749: if (&is_inside_of($tagstack, "table")) {
750: $currentstring .= ¢er_end_correction();
751: }
752: }
753: return $currentstring;
754: }
755:
756: #-- <b> tag (end tag required)
757: # NOTE: In TeX mode disables internal <p>
758: sub start_b {
759: my ($target,$token) = @_;
760: my $currentstring = '';
761: if ($target eq 'web' || $target eq 'webgrade') {
762: $currentstring = $token->[4];
763: } elsif ($target eq 'tex') {
764: &disable_para();
765: $currentstring .= '\textbf{';
766: }
767: return $currentstring;
768: }
769:
770: sub end_b {
771: my ($target,$token) = @_;
772: my $currentstring = '';
773: if ($target eq 'web' || $target eq 'webgrade') {
774: $currentstring = $token->[2];
775: } elsif ($target eq 'tex') {
776: &enable_para();
777: $currentstring = '}';
778: }
779: return $currentstring;
780: }
781:
782: #-- <strong> tag (end tag required)
783: # NOTE: in TeX mode disables internal <p>
784: sub start_strong {
785: my ($target,$token) = @_;
786: my $currentstring = '';
787: if ($target eq 'web' || $target eq 'webgrade') {
788: $currentstring = $token->[4];
789: } elsif ($target eq 'tex') {
790: &disable_para();
791: $currentstring = '\textbf{';
792: }
793: return $currentstring;
794: }
795:
796: sub end_strong {
797: my ($target,$token) = @_;
798: my $currentstring = '';
799: if ($target eq 'web' || $target eq 'webgrade') {
800: $currentstring = $token->[2];
801: } elsif ($target eq 'tex') {
802: &enable_para();
803: $currentstring = '}';
804: }
805: return $currentstring;
806: }
807:
808: #-- <h1> tag (end tag required)
809: sub start_h1 {
810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
811: my $currentstring = &end_p(); # Close off any prior para.
812: if ($target eq 'web' || $target eq 'webgrade') {
813: $currentstring .= $token->[4];
814: } elsif ($target eq 'tex') {
815: my $pre;
816: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
817: if ($align eq 'center') {
818: $pre='\begin{center}';
819: } elsif ($align eq 'left') {
820: $pre='\rlap{';
821: } elsif ($align eq 'right') {
822: $pre=' \hfill \llap{';
823: }
824: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
825: if (not defined $TeXsize) {$TeXsize="large";}
826: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
827: } elsif ($target eq 'meta') {
828: $currentstring.='<subject>';
829: &start_output($target);
830: }
831: return $currentstring;
832: }
833:
834: sub end_h1 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = '';
837: if ($target eq 'web' || $target eq 'webgrade') {
838: $currentstring .= $token->[2];
839: } elsif ($target eq 'tex') {
840: my $post='\vskip 0 mm ';
841: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
842: if ($align eq 'center') {
843: $post='\end{center}';
844: } elsif ($align eq 'left') {
845: $post='} \hfill'.'\vskip 0 mm ';
846: } elsif ($align eq 'right') {
847: $post='}'.'\vskip 0 mm ';
848: }
849: $currentstring .= '}}'.$post;
850: } elsif ($target eq 'meta') {
851: &end_output($target);
852: $currentstring='</subject>';
853: }
854: return $currentstring;
855: }
856:
857: #-- <h2> tag
858: sub start_h2 {
859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
860: my $currentstring = &end_p(); # Close off any prior para.
861: if ($target eq 'web' || $target eq 'webgrade') {
862: $currentstring .= $token->[4];
863: } elsif ($target eq 'tex') {
864: my $pre;
865: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
866: if ($align eq 'center') {
867: $pre='\begin{center}';
868: } elsif ($align eq 'left') {
869: $pre='\rlap{';
870: } elsif ($align eq 'right') {
871: $pre=' \hfill \llap{';
872: }
873: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
874: if (not defined $TeXsize) {$TeXsize="large";}
875: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
876: }
877: return $currentstring;
878: }
879:
880: sub end_h2 {
881: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
882: my $currentstring = '';
883: if ($target eq 'web' || $target eq 'webgrade') {
884: $currentstring .= $token->[2];
885: } elsif ($target eq 'tex') {
886: my $post='\vskip 0 mm ';
887: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
888: if ($align eq 'center') {
889: $post='\end{center}';
890: } elsif ($align eq 'left') {
891: $post='} \hfill'.'\vskip 0 mm ';
892: } elsif ($align eq 'right') {
893: $post='}'.'\vskip 0 mm ';
894: }
895: $currentstring .= '}}'.$post;
896: }
897: return $currentstring;
898: }
899:
900: #-- <h3> tag
901: sub start_h3 {
902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
903: my $currentstring = &end_p(); # Close off any prior para.
904: if ($target eq 'web' || $target eq 'webgrade') {
905: $currentstring .= $token->[4];
906: } elsif ($target eq 'tex') {
907: my $pre;
908: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
909: if ($align eq 'center') {
910: $pre='\begin{center}';
911: } elsif ($align eq 'left') {
912: $pre='\rlap{';
913: } elsif ($align eq 'right') {
914: $pre=' \hfill \llap{';
915: }
916: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
917: if (not defined $TeXsize) {$TeXsize="large";}
918: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
919: }
920: return $currentstring;
921: }
922:
923: sub end_h3 {
924: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
925: my $currentstring = '';
926: if ($target eq 'web' || $target eq 'webgrade') {
927: $currentstring .= $token->[2];
928: } elsif ($target eq 'tex') {
929: my $post='\vskip 0 mm ';
930: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
931: if ($align eq 'center') {
932: $post='\end{center}';
933: } elsif ($align eq 'left') {
934: $post='} \hfill'.'\vskip 0 mm ';
935: } elsif ($align eq 'right') {
936: $post='}'.'\vskip 0 mm ';
937: }
938: $currentstring .= '}}'.$post;
939: }
940: return $currentstring;
941: }
942:
943: #-- <h4> tag
944: sub start_h4 {
945: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
946: my $currentstring = &end_p(); # Close off any prior para.
947: if ($target eq 'web' || $target eq 'webgrade') {
948: $currentstring .= $token->[4];
949: } elsif ($target eq 'tex') {
950: my $pre;
951: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
952: if ($align eq 'center') {
953: $pre='\begin{center}';
954: } elsif ($align eq 'left') {
955: $pre='\rlap{';
956: } elsif ($align eq 'right') {
957: $pre=' \hfill \llap{';
958: }
959: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
960: if (not defined $TeXsize) {$TeXsize="large";}
961: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
962: }
963: return $currentstring;
964: }
965:
966: sub end_h4 {
967: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[2];
971: } elsif ($target eq 'tex') {
972: my $post='\vskip 0 mm ';
973: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
974: if ($align eq 'center') {
975: $post='\end{center}';
976: } elsif ($align eq 'left') {
977: $post='} \hfill'.'\vskip 0 mm ';
978: } elsif ($align eq 'right') {
979: $post='}'.'\vskip 0 mm ';
980: }
981: $currentstring .= '}}'.$post;
982: }
983: return $currentstring;
984: }
985:
986: #-- <h5> tag
987: sub start_h5 {
988: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
989: my $currentstring = &end_p(); # Close off any prior paras.
990: if ($target eq 'web' || $target eq 'webgrade') {
991: $currentstring .= $token->[4];
992: } elsif ($target eq 'tex') {
993: my $pre;
994: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
995: if ($align eq 'center') {
996: $pre='\begin{center}';
997: } elsif ($align eq 'left') {
998: $pre='\rlap{';
999: } elsif ($align eq 'right') {
1000: $pre=' \hfill \llap{';
1001: }
1002: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1003: if (not defined $TeXsize) {$TeXsize="large";}
1004: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1005: }
1006: return $currentstring;
1007: }
1008:
1009: sub end_h5 {
1010: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1011: my $currentstring = '';
1012: if ($target eq 'web' || $target eq 'webgrade') {
1013: $currentstring .= $token->[2];
1014: } elsif ($target eq 'tex') {
1015: my $post='\vskip 0 mm ';
1016: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1017: if ($align eq 'center') {
1018: $post='\end{center}';
1019: } elsif ($align eq 'left') {
1020: $post='} \hfill'.'\vskip 0 mm ';
1021: } elsif ($align eq 'right') {
1022: $post='}'.'\vskip 0 mm ';
1023: }
1024: $currentstring .= '}}'.$post;
1025: }
1026: return $currentstring;
1027: }
1028:
1029: #-- <h6> tag
1030: sub start_h6 {
1031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1032: my $currentstring = &end_p(); # Close off any prior paras.
1033: if ($target eq 'web' || $target eq 'webgrade') {
1034: $currentstring .= $token->[4];
1035: } elsif ($target eq 'tex') {
1036: my $pre;
1037: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1038: if ($align eq 'center') {
1039: $pre='\begin{center}';
1040: } elsif ($align eq 'left') {
1041: $pre='\rlap{';
1042: } elsif ($align eq 'right') {
1043: $pre=' \hfill \llap{';
1044: }
1045: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1046: if (not defined $TeXsize) {$TeXsize="large";}
1047: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1048: }
1049: return $currentstring;
1050: }
1051:
1052: sub end_h6 {
1053: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1054: my $currentstring = '';
1055: if ($target eq 'web' || $target eq 'webgrade') {
1056: $currentstring .= $token->[2];
1057: } elsif ($target eq 'tex') {
1058: my $post='\vskip 0 mm ';
1059: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1060: if ($align eq 'center') {
1061: $post='\end{center}';
1062: } elsif ($align eq 'left') {
1063: $post='} \hfill'.'\vskip 0 mm ';
1064: } elsif ($align eq 'right') {
1065: $post='}'.'\vskip 0 mm ';
1066: }
1067: $currentstring .= '}}'.$post;
1068: }
1069: return $currentstring;
1070: }
1071:
1072: #--- <cite> tag (end tag required)
1073: sub start_cite {
1074: my ($target,$token) = @_;
1075: my $currentstring = '';
1076: if ($target eq 'web' || $target eq 'webgrade') {
1077: $currentstring .= $token->[4];
1078: } elsif ($target eq 'tex') {
1079: $currentstring .= '\textit{';
1080: }
1081: return $currentstring;
1082: }
1083:
1084: sub end_cite {
1085: my ($target,$token) = @_;
1086: my $currentstring = '';
1087: if ($target eq 'web' || $target eq 'webgrade') {
1088: $currentstring .= $token->[2];
1089: } elsif ($target eq 'tex') {
1090: $currentstring .= '}';
1091: }
1092: return $currentstring;
1093: }
1094:
1095: #-- <i> tag (end tag required)
1096: sub start_i {
1097: my ($target,$token) = @_;
1098: my $currentstring = '';
1099: if ($target eq 'web' || $target eq 'webgrade') {
1100: $currentstring .= $token->[4];
1101: } elsif ($target eq 'tex') {
1102: $currentstring .= '\textit{';
1103: }
1104: return $currentstring;
1105: }
1106:
1107: sub end_i {
1108: my ($target,$token) = @_;
1109: my $currentstring = '';
1110: if ($target eq 'web' || $target eq 'webgrade') {
1111: $currentstring .= $token->[2];
1112: } elsif ($target eq 'tex') {
1113: $currentstring .= '}';
1114: }
1115: return $currentstring;
1116: }
1117:
1118: #-- <address> tag (end tag required)
1119: sub start_address {
1120: my ($target,$token) = @_;
1121: my $currentstring = '';
1122: if ($target eq 'web' || $target eq 'webgrade') {
1123: $currentstring .= $token->[4];
1124: } elsif ($target eq 'tex') {
1125: $currentstring .= '\textit{';
1126: }
1127: return $currentstring;
1128: }
1129:
1130: sub end_address {
1131: my ($target,$token) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web' || $target eq 'webgrade') {
1134: $currentstring .= $token->[2];
1135: } elsif ($target eq 'tex') {
1136: $currentstring .= '}';
1137: }
1138: return $currentstring;
1139: }
1140:
1141: #-- <dfn> tag (end tag required)
1142: sub start_dfn {
1143: my ($target,$token) = @_;
1144: my $currentstring = '';
1145: if ($target eq 'web' || $target eq 'webgrade') {
1146: $currentstring .= $token->[4];
1147: } elsif ($target eq 'tex') {
1148: $currentstring .= '\textit{';
1149: }
1150: return $currentstring;
1151: }
1152:
1153: sub end_dfn {
1154: my ($target,$token) = @_;
1155: my $currentstring = '';
1156: if ($target eq 'web' || $target eq 'webgrade') {
1157: $currentstring .= $token->[2];
1158: } elsif ($target eq 'tex') {
1159: $currentstring .= '}';
1160: }
1161: return $currentstring;
1162: }
1163:
1164: #-- <tt> tag (end tag required)
1165: sub start_tt {
1166: my ($target,$token) = @_;
1167: my $currentstring = '';
1168: if ($target eq 'web' || $target eq 'webgrade') {
1169: $currentstring .= $token->[4];
1170: } elsif ($target eq 'tex') {
1171: $currentstring .= '\texttt{';
1172: }
1173: return $currentstring;
1174: }
1175:
1176: sub end_tt {
1177: my ($target,$token) = @_;
1178: my $currentstring = '';
1179: if ($target eq 'web' || $target eq 'webgrade') {
1180: $currentstring .= $token->[2];
1181: } elsif ($target eq 'tex') {
1182: $currentstring .= '}';
1183: }
1184: return $currentstring;
1185: }
1186:
1187: #-- <kbd> tag (end tag required)
1188: sub start_kbd {
1189: my ($target,$token) = @_;
1190: my $currentstring = '';
1191: if ($target eq 'web' || $target eq 'webgrade') {
1192: $currentstring .= $token->[4];
1193: } elsif ($target eq 'tex') {
1194: $currentstring .= '\texttt{';
1195: }
1196: return $currentstring;
1197: }
1198:
1199: sub end_kbd {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web' || $target eq 'webgrade') {
1203: $currentstring .= $token->[2];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '}';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: #-- <code> tag (end tag required)
1211: sub start_code {
1212: my ($target,$token) = @_;
1213: my $currentstring = '';
1214: if ($target eq 'web' || $target eq 'webgrade') {
1215: $currentstring .= $token->[4];
1216: } elsif ($target eq 'tex') {
1217: $currentstring .= '\texttt{';
1218: }
1219: return $currentstring;
1220: }
1221:
1222: sub end_code {
1223: my ($target,$token) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web' || $target eq 'webgrade') {
1226: $currentstring .= $token->[2];
1227: } elsif ($target eq 'tex') {
1228: $currentstring .= '}';
1229: }
1230: return $currentstring;
1231: }
1232:
1233: #-- <em> tag (end tag required)
1234: sub start_em {
1235: my ($target,$token) = @_;
1236: my $currentstring = '';
1237: if ($target eq 'web' || $target eq 'webgrade') {
1238: $currentstring .= $token->[4];
1239: } elsif ($target eq 'tex') {
1240: $currentstring .= '\emph{';
1241: }
1242: return $currentstring;
1243: }
1244:
1245: sub end_em {
1246: my ($target,$token) = @_;
1247: my $currentstring = '';
1248: if ($target eq 'web' || $target eq 'webgrade') {
1249: $currentstring .= $token->[2];
1250: } elsif ($target eq 'tex') {
1251: $currentstring .= '}';
1252: }
1253: return $currentstring;
1254: }
1255:
1256: #-- <q> tag (end tag required)
1257: sub start_q {
1258: my ($target,$token) = @_;
1259: my $currentstring = '';
1260: if ($target eq 'web' || $target eq 'webgrade') {
1261: $currentstring .= $token->[4];
1262: } elsif ($target eq 'tex') {
1263: $currentstring .= '\emph{';
1264: }
1265: return $currentstring;
1266: }
1267:
1268: sub end_q {
1269: my ($target,$token) = @_;
1270: my $currentstring = '';
1271: if ($target eq 'web' || $target eq 'webgrade') {
1272: $currentstring .= $token->[2];
1273: } elsif ($target eq 'tex') {
1274: $currentstring .= '}';
1275: }
1276: return $currentstring;
1277: }
1278:
1279: # <p> is a bit strange since it does not require a closing </p>
1280: # However in latex, we must often output closing stuff to end
1281: # environments and {}'s etc. Therefore we do all the work
1282: # of figuring out the ending strings in the start tag processing,
1283: # and provide a mechanism to output the stop text external
1284: # to tag processing.
1285: #
1286: {
1287:
1288: my $closing_string = ''; # String required to close <p>
1289:
1290: # Some tags are <p> fragile meaning that <p> inside of them
1291: # does not work within TeX mode. This is managed via the
1292: # counter below:
1293: #
1294:
1295: my $para_disabled = 0;
1296:
1297: sub disable_para {
1298: $para_disabled++;
1299: }
1300: sub enable_para {
1301: $para_disabled--;
1302: }
1303:
1304:
1305: #-- <p> tag (end tag optional)
1306: #optional attribute - align="center|left|right"
1307: sub start_p {
1308: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1309: my $currentstring = '';
1310: if ($target eq 'web' || $target eq 'webgrade') {
1311: $currentstring .= &end_p(); # close off prior para if in progress.
1312: $currentstring .= $token->[4];
1313: if (! ($currentstring =~ /\//)) {
1314: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1315: }
1316: } elsif ($target eq 'tex' && !$para_disabled) {
1317:
1318: $currentstring .= &end_p(); # close off prior para if in progress.
1319: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1320: if ($align eq 'center') {
1321: $currentstring .='\begin{center}\par ';
1322: $closing_string = '\end{center}';
1323: if (&is_inside_of($tagstack, "table")) {
1324: $currentstring = ¢er_correction().$currentstring;
1325: }
1326: } elsif ($align eq 'right') {
1327: $currentstring.="\n".'{\flushright ';
1328: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1329: $closing_string= "}\n";
1330: } elsif ($align eq 'left') {
1331: $currentstring.= "\n".'{\flushleft ';
1332: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1333: $closing_string = "}\n";
1334: } else {
1335: $currentstring.='\par ';
1336: if (&is_inside_of($tagstack, 'table')) {
1337: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1338: } else {
1339: $closing_string = '\strut\\\\\strut ';
1340: }
1341: }
1342:
1343: }
1344: return $currentstring;
1345: }
1346: #
1347: # End paragraph processing just requires that we output the
1348: # closing string that was saved and blank it.
1349: sub end_p {
1350: # Note only 'tex' mode uses disable_para and enable_para
1351: # so we don't need to know the target in the check below:
1352:
1353: if (!$para_disabled) {
1354: my $current_string = $closing_string;
1355: $closing_string = ''; # Not in a para anymore.
1356: return $current_string;
1357: } else {
1358: return '';
1359: }
1360:
1361: }
1362: }
1363: #-- <br> tag (end tag forbidden)
1364: sub start_br {
1365: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1366: my $currentstring = '';
1367: if ($target eq 'web' || $target eq 'webgrade') {
1368: $currentstring .= $token->[4];
1369: } elsif ($target eq 'tex') {
1370: my @tempo=@$tagstack;
1371: my $signal=0;
1372: # Not going to factor this to is_inside_of since that would require
1373: # multiple stack traversals.
1374: #
1375: for (my $i=$#tempo;$i>=0;$i--) {
1376: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1377: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1378: $signal=1;
1379: }
1380: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1381: $signal = 1;
1382: }
1383: }
1384: if ($signal != 1) {
1385: $currentstring .= '\strut \\\\ \strut ';
1386: }
1387:
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_br {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: }
1398: return $currentstring;
1399: }
1400:
1401: #-- <big> tag (end tag required)
1402: sub start_big {
1403: my ($target,$token) = @_;
1404: my $currentstring = '';
1405: if ($target eq 'web' || $target eq 'webgrade') {
1406: $currentstring .= $token->[4];
1407: } elsif ($target eq 'tex') {
1408: $currentstring .= '{\large ';
1409: }
1410: return $currentstring;
1411: }
1412:
1413: sub end_big {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web' || $target eq 'webgrade') {
1417: $currentstring .= $token->[2];
1418: } elsif ($target eq 'tex') {
1419: $currentstring .= '}';
1420: }
1421: return $currentstring;
1422: }
1423:
1424: #-- <small> tag (end tag required)
1425: sub start_small {
1426: my ($target,$token) = @_;
1427: my $currentstring = '';
1428: if ($target eq 'web' || $target eq 'webgrade') {
1429: $currentstring .= $token->[4];
1430: } elsif ($target eq 'tex') {
1431: $currentstring .= '{\footnotesize ';
1432: }
1433: return $currentstring;
1434: }
1435:
1436: sub end_small {
1437: my ($target,$token) = @_;
1438: my $currentstring = '';
1439: if ($target eq 'web' || $target eq 'webgrade') {
1440: $currentstring .= $token->[2];
1441: } elsif ($target eq 'tex') {
1442: $currentstring .= '}';
1443: }
1444: return $currentstring;
1445: }
1446:
1447: #-- <basefont> tag (end tag forbidden)
1448: sub start_basefont {
1449: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1450: my $currentstring = '';
1451: if ($target eq 'web' || $target eq 'webgrade') {
1452: $currentstring = $token->[4];
1453: } elsif ($target eq 'tex') {
1454: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1455: if (defined $basesize) {
1456: $currentstring = '{\\'.$basesize.' ';
1457: }
1458: }
1459: return $currentstring;
1460: }
1461:
1462: sub end_basefont {
1463: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1464: my $currentstring = '';
1465: if ($target eq 'web' || $target eq 'webgrade') {
1466: $currentstring = $token->[4];
1467: } elsif ($target eq 'tex') {
1468: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1469: if (defined $basesize) {
1470: $currentstring = '}';
1471: }
1472: }
1473: return $currentstring;
1474: }
1475:
1476: #-- <font> tag (end tag required)
1477: sub start_font {
1478: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1479: my $currentstring = '';
1480: if ($target eq 'web' || $target eq 'webgrade') {
1481: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1482: $currentstring = $token->[4];
1483: } elsif ($target eq 'tex') {
1484: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1485: if (defined $fontsize) {
1486: $currentstring = '{\\'.$fontsize.' ';
1487: }
1488: }
1489: return $currentstring;
1490: }
1491:
1492: sub end_font {
1493: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1494: my $currentstring = '';
1495: if ($target eq 'web' || $target eq 'webgrade') {
1496: $currentstring = $token->[2];
1497: } elsif ($target eq 'tex') {
1498: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1499: if (defined $fontsize) {
1500: $currentstring = '}';
1501: }
1502: }
1503: return $currentstring;
1504: }
1505:
1506: #-- <strike> tag (end tag required)
1507: sub start_strike {
1508: my ($target,$token) = @_;
1509: my $currentstring = '';
1510: if ($target eq 'web' || $target eq 'webgrade') {
1511: $currentstring .= $token->[4];
1512: } elsif ($target eq 'tex') {
1513: &Apache::lonxml::startredirection();
1514: }
1515: return $currentstring;
1516: }
1517:
1518: sub end_strike {
1519: my ($target,$token) = @_;
1520: my $currentstring = '';
1521: if ($target eq 'web' || $target eq 'webgrade') {
1522: $currentstring .= $token->[2];
1523: } elsif ($target eq 'tex') {
1524: $currentstring=&Apache::lonxml::endredirection();
1525: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1526: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1527: $currentstring=~s/(\S)\s*$/$1\}/;
1528: }
1529: return $currentstring;
1530: }
1531:
1532: #-- <s> tag (end tag required)
1533: sub start_s {
1534: my ($target,$token) = @_;
1535: my $currentstring = '';
1536: if ($target eq 'web' || $target eq 'webgrade') {
1537: $currentstring .= $token->[4];
1538: } elsif ($target eq 'tex') {
1539: &Apache::lonxml::startredirection();
1540: }
1541: return $currentstring;
1542: }
1543:
1544: sub end_s {
1545: my ($target,$token) = @_;
1546: my $currentstring = '';
1547: if ($target eq 'web' || $target eq 'webgrade') {
1548: $currentstring .= $token->[2];
1549: } elsif ($target eq 'tex') {
1550: $currentstring=&Apache::lonxml::endredirection();
1551: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1552: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1553: $currentstring=~s/(\S)\s*$/$1\}/;
1554: }
1555: return $currentstring;
1556: }
1557:
1558: #-- <sub> tag (end tag required)
1559: sub start_sub {
1560: my ($target,$token) = @_;
1561: my $currentstring = '';
1562: if ($target eq 'web' || $target eq 'webgrade') {
1563: $currentstring .= $token->[4];
1564: } elsif ($target eq 'tex') {
1565: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1566: }
1567: return $currentstring;
1568: }
1569:
1570: sub end_sub {
1571: my ($target,$token) = @_;
1572: my $currentstring = '';
1573: if ($target eq 'web' || $target eq 'webgrade') {
1574: $currentstring .= $token->[2];
1575: } elsif ($target eq 'tex') {
1576: $currentstring .= '}}';
1577: }
1578: return $currentstring;
1579: }
1580:
1581: #-- <sup> tag (end tag required)
1582: sub start_sup {
1583: my ($target,$token) = @_;
1584: my $currentstring = '';
1585: if ($target eq 'web' || $target eq 'webgrade') {
1586: $currentstring .= $token->[4];
1587: } elsif ($target eq 'tex') {
1588: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1589: }
1590: return $currentstring;
1591: }
1592:
1593: sub end_sup {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web' || $target eq 'webgrade') {
1597: $currentstring .= $token->[2];
1598: } elsif ($target eq 'tex') {
1599: $currentstring .= '}}';
1600: }
1601: return $currentstring;
1602: }
1603:
1604: #-- <hr> tag (end tag forbidden)
1605: sub start_hr {
1606: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1607: my $currentstring = &end_p(); # End enclosing para.
1608: if ($target eq 'web' || $target eq 'webgrade') {
1609: $currentstring .= $token->[4];
1610: } elsif ($target eq 'tex') {
1611:
1612: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1613: #
1614: my $restart_sub = 0;
1615: my $restart_sup = 0;
1616:
1617: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1618: # using the start_ stop_ functions.. those tags only care about
1619: # $target.
1620:
1621: if (&is_inside_of($tagstack, "sub")) {
1622: $restart_sub = 1;
1623: $currentstring .= &end_sub($target, $token, $tagstack,
1624: $parstack, $parser, $safeeval);
1625: }
1626: if (&is_inside_of($tagstack, "sup")) {
1627: $restart_sup = 1;
1628: $currentstring .= &end_sup($target, $token, $tagstack,
1629: $parstack, $parser, $safeeval);
1630: }
1631:
1632: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1633: if (defined $LaTeXwidth) {
1634: if ($LaTeXwidth=~/^%/) {
1635: substr($LaTeXwidth,0,1)='';
1636: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1637: }
1638: } else {
1639: $LaTeXwidth ='0.9\textwidth';
1640: }
1641: my ($pre,$post);
1642: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1643: if (($align eq 'center') || (not defined $align)) {
1644: $pre=''; $post='';
1645: } elsif ($align eq 'left') {
1646: $pre='\rlap{'; $post='} \hfill';
1647: } elsif ($align eq 'right') {
1648: $pre=' \hfill \llap{'; $post='}';
1649: }
1650: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1651: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1652: # Turn stuff back on that we can't be inside of.
1653:
1654: if ($restart_sub) {
1655: $currentstring .= &start_sub($target, $token, $tagstack,
1656: $parstack, $parser, $safeeval);
1657: }
1658: if ($restart_sup) {
1659: $currentstring .= &start_sup($target, $token, $tagstack,
1660: $parstack, $parser, $safeeval);
1661: }
1662: }
1663: return $currentstring;
1664: }
1665:
1666: sub end_hr {
1667: my ($target,$token) = @_;
1668: my $currentstring = '';
1669: if ($target eq 'web' || $target eq 'webgrade') {
1670: $currentstring .= $token->[2];
1671: }
1672: return $currentstring;
1673: }
1674:
1675: #-- <div> tag (end tag required)
1676: {
1677:
1678: # Since div can be nested, the stack below is used
1679: # in 'tex' mode to store the ending strings
1680: # for the div stack.
1681:
1682: my @div_end_stack;
1683:
1684: sub start_div {
1685: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1686: my $currentstring = &end_p(); # Close enclosing para.
1687: if ($target eq 'web' || $target eq 'webgrade') {
1688: $currentstring .= $token->[4];
1689: }
1690: if ($target eq 'tex') {
1691: # 4 possible alignments: left, right, center, and -missing-.
1692: # If inside a table row, we must let the table logic
1693: # do the alignment, however.
1694: #
1695:
1696: my $endstring = '';
1697:
1698: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1699: $safeeval, undef, 1));
1700: if ($align eq 'center') {
1701: $currentstring .= '\begin{center}';
1702: $endstring = '\end{center}';
1703: if (&is_inside_of($tagstack, "table")) {
1704: $currentstring = ¢er_correction().$currentstring;
1705: $endstring .= ¢er_end_correction();
1706: }
1707: }
1708: elsif ($align eq 'right') {
1709: $currentstring .= '\begin{flushright}';
1710: $endstring .= '\end{flushright}';
1711: } elsif ($align eq 'left') {
1712: $currentstring .= '\begin{flushleft}';
1713: $endstring = '\end{flushleft}';
1714: } else {
1715:
1716: }
1717: $currentstring .= "\n"; # For human readability.
1718: $endstring = "\n$endstring\n"; # For human readability
1719: push(@div_end_stack, $endstring);
1720: }
1721: return $currentstring;
1722: }
1723:
1724: sub end_div {
1725: my ($target,$token) = @_;
1726: my $currentstring = '';
1727: if ($target eq 'web' || $target eq 'webgrade') {
1728: $currentstring .= $token->[2];
1729: }
1730: if ($target eq 'tex') {
1731: my $endstring = pop @div_end_stack;
1732: $currentstring .= $endstring;
1733: }
1734: return $currentstring;
1735: }
1736: }
1737:
1738: #-- <a> tag (end tag required)
1739: sub start_a {
1740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1741: my $currentstring = '';
1742: if ($target eq 'web' || $target eq 'webgrade') {
1743: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1744: undef,1);
1745: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1746: if ($href =~ /\S/) {
1747: if ($href !~ m{^https?://}) {
1748: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1749: my $linkurl;
1750: if ($href =~ m{^/uploaded/}) {
1751: $linkurl = $href;
1752: } elsif ($href =~ m{^[^/]}) {
1753: my $path = $url;
1754: $path =~ s{[^/]*$}{};
1755: $linkurl = $path.$href;
1756: }
1757: if ($linkurl =~ m{^/uploaded/}) {
1758: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1759: if (&Apache::lonnet::is_on_map($url)) {
1760: &Apache::lonxml::extlink($linkurl);
1761: } elsif ($env{'request.course.id'}) {
1762: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1763: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1764: if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/(docs|supplemental)/)}) {
1765: my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
1766: if ($cleanhref) {
1767: &Apache::lonxml::extlink($cleanhref);
1768: }
1769: }
1770: }
1771: }
1772: }
1773: }
1774: }
1775: }
1776: return $currentstring;
1777: }
1778:
1779: sub end_a {
1780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1781: my $currentstring = '';
1782: if ($target eq 'web' || $target eq 'webgrade') {
1783: $currentstring .= $token->[2];
1784: }
1785: if ($target eq 'tex') {
1786: my $href =
1787: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1788: my $name =
1789: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1790: my $uriprint =
1791: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1792: my $anchorprint =
1793: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1794: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1795: $href =~ s/([^\\])%/$1\\\%/g;
1796: # Substitute special symbols... and allow line breaks at each /
1797: #
1798: $href = &Apache::lonxml::latex_special_symbols($href);
1799: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1800: $currentstring .= ' ({\tt URI:'.$href.'})';
1801: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1802: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1803: } else {
1804: $currentstring.='';
1805: }
1806: }
1807: return $currentstring;
1808: }
1809:
1810: #-- <li> tag (end tag optional)
1811: sub start_li {
1812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1813: my $currentstring = '';
1814: if ($target eq 'web' || $target eq 'webgrade') {
1815: $currentstring = $token->[4];
1816: } elsif ($target eq 'tex') {
1817: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1818: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1819: #FIXME need to support types i and I
1820: if ($type=~/disc/) {
1821: $currentstring .= ' \item[$\bullet$] ';
1822: } elsif ($type=~/circle/) {
1823: $currentstring .= ' \item[$\circ$] ';
1824: } elsif ($type=~/square/) {
1825: $currentstring .= ' \item[$\diamond$] ';
1826: } elsif ($type eq '1') {
1827: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1828: } elsif ($type eq 'A') {
1829: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1830: } elsif ($type eq 'a') {
1831: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1832: } elsif ($value ne '') {
1833: $currentstring .= ' \item['.$value.'] ';
1834: } else {
1835: $currentstring .= ' \item ';
1836: }
1837: $Apache::londefdef::list_index++;
1838: }
1839: return $currentstring;
1840: }
1841:
1842: sub end_li {
1843: my ($target,$token) = @_;
1844: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1845: if ($target eq 'web' || $target eq 'webgrade') {
1846: $currentstring .= $token->[2];
1847: }
1848: return $currentstring;
1849: }
1850:
1851: #-- <u> tag (end tag required)
1852: sub start_u {
1853: my ($target,$token) = @_;
1854: my $currentstring = '';
1855: if ($target eq 'web' || $target eq 'webgrade') {
1856: $currentstring .= $token->[4];
1857: } elsif ($target eq 'tex') {
1858: &Apache::lonxml::startredirection();
1859: }
1860: return $currentstring;
1861: }
1862:
1863: sub end_u {
1864: my ($target,$token) = @_;
1865: my $currentstring = '';
1866: if ($target eq 'web' || $target eq 'webgrade') {
1867: $currentstring .= $token->[2];
1868: } elsif ($target eq 'tex') {
1869: $currentstring=&Apache::lonxml::endredirection();
1870: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1871: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1872: $currentstring=~s/(\S)\s*$/$1\}/;
1873: }
1874: return $currentstring;
1875: }
1876:
1877: #-- <ul> tag (end tag required)
1878: sub start_ul {
1879: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1880: my $currentstring = &end_p(); # Close off enclosing list.
1881: if ($target eq 'web' || $target eq 'webgrade') {
1882: $currentstring .= $token->[4];
1883: } elsif ($target eq 'tex') {
1884: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1885: $Apache::londefdef::list_index=0;
1886: if ($TeXtype eq 'disc') {
1887: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1888: '\renewcommand{\labelitemii}{$\bullet$}'.
1889: '\renewcommand{\labelitemiii}{$\bullet$}'.
1890: '\renewcommand{\labelitemiv}{$\bullet$}';
1891: } elsif ($TeXtype eq 'circle') {
1892: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1893: '\renewcommand{\labelitemii}{$\circ$}'.
1894: '\renewcommand{\labelitemiii}{$\circ$}'.
1895: '\renewcommand{\labelitemiv}{$\circ$}';
1896: } elsif ($TeXtype eq 'square') {
1897: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1898: '\renewcommand{\labelitemii}{$\diamond$}'.
1899: '\renewcommand{\labelitemiii}{$\diamond$}'.
1900: '\renewcommand{\labelitemiv}{$\diamond$}';
1901: }
1902: $currentstring .= '\strut \begin{itemize}';
1903: }
1904: return $currentstring;
1905: }
1906:
1907: sub end_ul {
1908: my ($target,$token) = @_;
1909: my $currentstring = '';
1910: if ($target eq 'web' || $target eq 'webgrade') {
1911: $currentstring = $token->[2];
1912: } elsif ($target eq 'tex') {
1913: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1914: '\renewcommand{\labelitemii}{$\bullet$}'.
1915: '\renewcommand{\labelitemiii}{$\bullet$}'.
1916: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1917: }
1918: return $currentstring;
1919: }
1920:
1921: #-- <menu> tag (end tag required)
1922: sub start_menu {
1923: my ($target,$token) = @_;
1924: my $currentstring = '';
1925: if ($target eq 'web' || $target eq 'webgrade') {
1926: $currentstring = $token->[4];
1927: } elsif ($target eq 'tex') {
1928: $currentstring = " \\begin{itemize} ";
1929: }
1930: return $currentstring;
1931: }
1932:
1933: sub end_menu {
1934: my ($target,$token) = @_;
1935: my $currentstring = '';
1936: if ($target eq 'web' || $target eq 'webgrade') {
1937: $currentstring = $token->[2];
1938: } elsif ($target eq 'tex') {
1939: $currentstring = " \\end{itemize}";
1940: }
1941: return $currentstring;
1942: }
1943:
1944: #-- <dir> tag (end tag required)
1945: sub start_dir {
1946: my ($target,$token) = @_;
1947: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1948: if ($target eq 'web' || $target eq 'webgrade') {
1949: $currentstring .= $token->[4];
1950: } elsif ($target eq 'tex') {
1951: $currentstring .= " \\begin{itemize} ";
1952: }
1953: return $currentstring;
1954: }
1955:
1956: sub end_dir {
1957: my ($target,$token) = @_;
1958: my $currentstring = '';
1959: if ($target eq 'web' || $target eq 'webgrade') {
1960: $currentstring = $token->[2];
1961: } elsif ($target eq 'tex') {
1962: $currentstring = " \\end{itemize}";
1963: }
1964: return $currentstring;
1965: }
1966:
1967: #-- <ol> tag (end tag required)
1968: sub start_ol {
1969: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1970: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1971: if ($target eq 'web' || $target eq 'webgrade') {
1972: $currentstring .= $token->[4];
1973: } elsif ($target eq 'tex') {
1974: $Apache::londefdef::list_index=0;
1975: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1976: if ($type eq '1') {
1977: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1978: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1979: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1980: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1981: } elsif ($type eq 'A') {
1982: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1983: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1984: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1985: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1986: } elsif ($type eq 'a') {
1987: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1988: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1989: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1990: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1991: } elsif ($type eq 'i') {
1992: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1993: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1994: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1995: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1996: } elsif ($type eq 'I') {
1997: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1998: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1999: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
2000: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
2001: }
2002: $currentstring .= '\strut \begin{enumerate}';
2003: }
2004: return $currentstring;
2005: }
2006:
2007: sub end_ol {
2008: my ($target,$token) = @_;
2009: my $currentstring = '';
2010: if ($target eq 'web' || $target eq 'webgrade') {
2011: $currentstring = $token->[2];
2012: } elsif ($target eq 'tex') {
2013: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
2014: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
2015: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
2016: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
2017: }
2018: return $currentstring;
2019: }
2020:
2021: #-- <dl> tag (end tag required)
2022: sub start_dl {
2023: my ($target,$token) = @_;
2024: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
2025: if ($target eq 'web' || $target eq 'webgrade') {
2026: $currentstring .= $token->[4];
2027: } elsif ($target eq 'tex') {
2028: $currentstring .= '\begin{description}';
2029: $Apache::londefdef::DL++;
2030: push(@Apache::londefdef::description,[]);
2031: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
2032: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
2033: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
2034: }
2035: return $currentstring;
2036: }
2037:
2038: sub end_dl {
2039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2040: my $currentstring = '';
2041: if ($target eq 'web' || $target eq 'webgrade') {
2042: $currentstring = $token->[2];
2043: } elsif ($target eq 'tex') {
2044: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2045: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2046: foreach my $element (@{$Apache::londefdef::description[-1]}) {
2047: $currentstring.=' '.$element.' ';
2048: }
2049: pop(@Apache::londefdef::description);
2050: $currentstring.='\end{description}';
2051: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
2052: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
2053: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
2054: $Apache::londefdef::DL--;
2055: }
2056: return $currentstring;
2057: }
2058:
2059: #-- <dt> tag (end tag optional)
2060: sub start_dt {
2061: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2062: my $currentstring='';
2063: if ($target eq 'web' || $target eq 'webgrade') {
2064: $currentstring = $token->[4];
2065: } elsif ($target eq 'tex') {
2066: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2067: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2068: &Apache::lonxml::startredirection();
2069: $Apache::londefdef::DT[-1]++;
2070: $Apache::londefdef::seenDT[-1]=1;
2071: }
2072: return $currentstring;
2073: }
2074:
2075: sub end_dt {
2076: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2077: my $currentstring = '';
2078: if ($target eq 'web' || $target eq 'webgrade') {
2079: $currentstring = $token->[2];
2080: } elsif ($target eq 'tex') {
2081: if ($Apache::londefdef::DT[-1]) {
2082: my $data=&item_cleanup();
2083: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2084: $Apache::londefdef::DT[-1]--;
2085: }
2086: }
2087: return $currentstring;
2088: }
2089:
2090: sub item_cleanup {
2091: my $item=&Apache::lonxml::endredirection();
2092: $item=~s/\\begin\{center}//g;
2093: $item=~s/\\end\{center}//g;
2094: return $item;
2095: }
2096:
2097: #-- <dd> tag (end tag optional)
2098: sub start_dd {
2099: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2100: my $currentstring = '';
2101: if ($target eq 'web' || $target eq 'webgrade') {
2102: $currentstring = $token->[4];
2103: } elsif ($target eq 'tex') {
2104: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2105: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2106: if (!$Apache::londefdef::seenDT[-1]) {
2107: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2108: }
2109: push(@{$Apache::londefdef::description[-1]},'');
2110: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2111: $Apache::londefdef::DD[-1]++;
2112: &Apache::lonxml::startredirection();
2113: }
2114: return $currentstring;
2115: }
2116:
2117: sub end_dd {
2118: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2119: my $currentstring = '';
2120: if ($target eq 'web' || $target eq 'webgrade') {
2121: $currentstring = $token->[2];
2122: } elsif ($target eq 'tex') {
2123: $Apache::londefdef::description[-1]->[-1].=
2124: &Apache::lonxml::endredirection().' \vskip 0mm ';
2125: $Apache::londefdef::DD[-1]--;
2126: }
2127: return $currentstring;
2128: }
2129:
2130: #-- <table> tag (end tag required)
2131: # <table> also ends any prior <p> that is not closed.
2132: # but, unless I allow <p>'s to nest, that's the
2133: # only way I could think of to allow <p> in
2134: # <tr> <th> bodies
2135: #
2136: #list of supported attributes: border,width,TeXwidth,TeXtheme
2137: # align
2138: sub start_table {
2139: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2140: my $textwidth = '';
2141: my $currentstring = &end_p();
2142: if ($target eq 'web' || $target eq 'webgrade') {
2143: $currentstring .= $token->[4];
2144: } elsif ($target eq 'tex') {
2145: &disable_para(); # Can't have paras in a table.
2146:
2147: # Get the parameters that we can do something about:
2148:
2149: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2150: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2151: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2152: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2153: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2154:
2155: # The only thing that needs any figuring out is the width.. and then only if it is
2156: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2157: #
2158:
2159: my $table = new Apache::lontable();
2160: if ((defined $border) && ($border > 0)) {
2161: # &Apache::lonnet::logthis("Turning on table borders: $border");
2162: $table->table_border(1);
2163: if (!defined $cell_border) {
2164: $table->cell_border(1); # Default for rules is all if rules not defined.
2165: }
2166: }
2167:
2168: if ((defined $cell_border)) {
2169: if ($cell_border eq 'all') {
2170: $table->cell_border(1);
2171: } elsif ($cell_border eq 'rows') {
2172: $table->cell_border(2);
2173: } elsif ($cell_border eq 'cols') {
2174: $table->cell_border(3);
2175: } elsif($cell_border eq 'groups') {
2176: $table->cell_border(4);
2177: } else {
2178: $table->cell_border(0);
2179: }
2180: }
2181: if (defined $theme) {
2182: $table->theme($theme);
2183: }
2184: if (defined $align) {
2185: $table->alignment($align);
2186: }
2187:
2188: # Missing width is most of page width
2189:
2190: if (!(defined $width)) {
2191: $width = '70%';
2192: }
2193:
2194: # If a percentage, need to calculate what this means in terms of
2195: # page width:
2196:
2197: if ($width =~ /%$/) {
2198: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2199: $width =~ s/%//;
2200: $width = $width * $textwidth / 100.0;
2201: $width .= " mm";
2202: $table->width($width);
2203: }
2204:
2205: push(@Apache::londefdef::table, $table);
2206: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2207:
2208: }
2209: return $currentstring;
2210: }
2211:
2212: sub end_table {
2213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2214: my $currentstring = '';
2215: if ($target eq 'web' || $target eq 'webgrade') {
2216: $currentstring = $token->[2];
2217: } elsif ($target eq 'tex') {
2218:
2219:
2220: my $table = pop(@Apache::londefdef::table);
2221: my $t = $table->generate();
2222: # &Apache::lonnet::logthis("Generating string");
2223: $currentstring = $t->generate_string();
2224: # &Apache::lonnet::logthis("Generated: $currentstring");
2225: &enable_para();
2226:
2227: }
2228: return $currentstring;
2229: }
2230:
2231: #-- <tr> tag (end tag optional)
2232: sub start_tr {
2233: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2234: my $currentstring = '';
2235: if ($target eq 'web' || $target eq 'webgrade') {
2236: $currentstring = $token->[4];
2237: } elsif ($target eq 'tex') {
2238:
2239: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2240: $Apache::londefdef::table[-1]->start_row();
2241:
2242: if ($align ne '') {
2243: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2244: }
2245:
2246: #---------------------------------------------------------------
2247: # Old table code.
2248: #---------------------------------------------------------------
2249:
2250: if (0) {
2251: $Apache::londefdef::table[-1]{'row_number'}++;
2252: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2253: if ($alignchar ne '') {
2254: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2255: } else {
2256: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2257: }
2258: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2259: #
2260: # Need to save the number of table columns to preserve the max # columns.
2261: #
2262: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2263: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2264: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2265: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2266: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2267: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2268: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2269: }
2270: }
2271: return $currentstring;
2272: }
2273:
2274: sub end_tr {
2275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2276: my $currentstring = &end_p(); # Close any pending <p> in the row.
2277: if ($target eq 'web' || $target eq 'webgrade') {
2278: $currentstring .= $token->[2];
2279: } elsif ($target eq 'tex') {
2280:
2281: # In case the user is missing a </td> or </th> tag:
2282:
2283: if ($Apache::londefdef::TD_redirection) {
2284: &end_td_tex($parstack,$parser,$safeeval);
2285: }
2286: $Apache::londefdef::table[-1]->end_row();
2287:
2288: #-----------------------------------------------
2289: # Old table code
2290: #-----------------------------------------------
2291:
2292: if (0) {
2293: if ($Apache::londefdef::TD_redirection) {
2294: &end_td_tex($parstack,$parser,$safeeval);
2295: }
2296: # Counter columns must be the maximum number of columns seen
2297: # in the table so far so:
2298: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2299: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2300: }
2301: }
2302:
2303:
2304: }
2305: return $currentstring;
2306: }
2307:
2308: #-- <td> tag (end tag optional)
2309: sub start_td {
2310: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2311: my $currentstring = '';
2312: if ($target eq 'web' || $target eq 'webgrade') {
2313: $currentstring = $token->[4];
2314: } elsif ($target eq 'tex') {
2315: $Apache::londefdef::TD_redirection = 1;
2316: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2317: }
2318: return $currentstring;
2319: }
2320:
2321: sub tag_check {
2322: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2323: my @ar=@$parstack;
2324: for (my $i=$#ar-1;$i>=0;$i--) {
2325: if (lc($$tagstack[$i]) eq $good_tag) {
2326: &start_td_tex($parstack,$parser,$safeeval);
2327: last;
2328: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2329: splice @ar, $i+1;
2330: &end_td_tex(\@ar,$parser,$safeeval);
2331: &start_td_tex($parstack,$parser,$safeeval);
2332: last;
2333: }
2334: }
2335: return '';
2336: }
2337:
2338: #
2339: # Factor out cell configuration hash generation:
2340: #
2341:
2342: sub cell_config_hash {
2343: my ($align, $rowspan, $colspan, $width) = @_;
2344: if ($rowspan ne '') {
2345: $rowspan =~ s/^\s+|\s+$//g;
2346: }
2347: if ($colspan ne '') {
2348: $colspan =~ s/^\s+|\s+$//g;
2349: }
2350: my %config;
2351: if ($align ne '') {
2352: $config{'halign'} = $align;
2353: }
2354: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2355: $config{'colspan'} = $colspan;
2356: }
2357: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2358: $config{'rowspan'} = $rowspan;
2359: }
2360: if ($width ne '') {
2361: $config{'width'} = $width;
2362: }
2363: return \%config;
2364: }
2365:
2366: sub start_td_tex {
2367: my ($parstack,$parser,$safeeval) = @_;
2368:
2369: # At this stage, an empty cell is created with the
2370: # appropriate rowspan/colspan and alignment
2371: # attributes, but empty of text. end_td_tex will
2372: # fetch the contents from the recursive parse and
2373: # fill the cell with them:
2374: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2375: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2376: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2377: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2378: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2379:
2380: my $table = $Apache::londefdef::table[-1];
2381: $table->add_cell('', $config);
2382:
2383:
2384: #------------------------------------------------
2385: # Old table code.
2386: #------------------------------------------------
2387:
2388: if (0) {
2389:
2390: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2391: if ($alignchar eq '') {
2392: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2393: }
2394: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2395: $Apache::londefdef::table[-1]{'counter_columns'}++;
2396: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2397: if (defined $TeXwidth) {
2398: my $current_length=&recalc($TeXwidth);
2399: $current_length=~/(\d+\.?\d*)/;
2400: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2401: }
2402: }
2403: &Apache::lonxml::startredirection();
2404: return '';
2405: }
2406:
2407: sub end_td_tex {
2408:
2409: my $text = &Apache::lonxml::endredirection();
2410: my $table = $Apache::londefdef::table[-1];
2411: $table->append_cell_text($text);
2412:
2413: #-------------------------------------------------
2414: # Old table code
2415: #-------------------------------------------------
2416:
2417: if (0) {
2418: my ($parstack,$parser,$safeeval) = @_;
2419: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2420: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2421: my $data = &Apache::lonxml::endredirection();
2422:
2423: # The rowspan array of the table indicates which cells are part of a span.
2424: # n indicates the start of a span set of n rows.
2425: # ^ indicates a cell that continues a span set.
2426: # _ indicates the cell is at the bottom of a span set.
2427: # If this and subsequent cells are part of a rowspan, we must
2428: # push along the row until we find one that is not.
2429:
2430: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2431: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2432: # Part of a span.
2433: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2434: $current_column++;
2435: }
2436: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2437:
2438:
2439: # Get the column and row spans.
2440: # Colspan can be done via \multicolumn if I can figure out the data structs.
2441:
2442: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2443: if (!$colspan) {
2444: $colspan = 1;
2445: }
2446:
2447: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2448: if (!$rowspan) {
2449: $rowspan = 1;
2450: }
2451:
2452:
2453:
2454: for (my $c = 0; $c < $colspan; $c++) {
2455: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2456: for (my $i = 1; $i < $rowspan; $i++) {
2457: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2458: if ($i == ($rowspan-1)) {
2459: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2460: }
2461: }
2462: }
2463:
2464: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2465: if (defined $TeXwidth) {
2466: for (my $c = 0; $c < $colspan; $c++) {
2467: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2468: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2469: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2470: }
2471: } else {
2472: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2473: my $garbage_data=$data;
2474: my $fwidth=0;
2475: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2476: my $current_length=&recalc($1);
2477: $current_length=~/(\d+\.?\d*)/;
2478: if ($fwidth<$1) {$fwidth=$1;}
2479: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2480: }
2481: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2482: my $current_length=$1;
2483: if ($fwidth<$current_length) {$fwidth=$current_length;}
2484: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2485: }
2486: for (my $c = 0; $c < $colspan; $c++) {
2487: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2488: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2489: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2490: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2491: }
2492: } 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)*/) {
2493: my $garbage_data=$data;
2494: my $fwidth=0;
2495: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2496: my $current_length=&recalc($1);
2497: $current_length=~/(\d+\.?\d*)/;
2498: if ($fwidth<$1) {$fwidth=$1;}
2499: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2500: }
2501: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2502: my $current_length=&recalc($1);
2503: $current_length=~/(\d+\.?\d*)/;
2504: if ($fwidth<$1) {$fwidth=$1;}
2505: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2506: }
2507: for (my $c = 0; $c < $colspan; $c++) {
2508: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2509: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2510: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2511: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2512: }
2513: $data=~s/\\\\\s*$//;
2514: } else {
2515: $data=~s/^\s+(\S.*)/$1/;
2516: $data=~s/(.*\S)\s+$/$1/;
2517: $data=~s/(\s)+/$1/;
2518: my ($current_length,$min_length)=(0,0);
2519: if ($data=~/\\vskip/) {
2520: my $newdata=$data;
2521: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2522: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2523: foreach my $elementdata (@newdata) {
2524: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2525: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2526: my @words=split(/ /,$elementdata);
2527: foreach my $word (@words) {
2528: my $lengthword=2.5*&LATEX_length($word);
2529: if ($min_length<$lengthword) {$min_length=$lengthword;}
2530: }
2531: }
2532: } else {
2533: $current_length=2.5*&LATEX_length($data);
2534: my @words=split(/ /,$data);
2535: foreach my $word (@words) {
2536: my $lengthword=2*&LATEX_length($word);
2537: if ($min_length<$lengthword) {$min_length=$lengthword;}
2538: }
2539: }
2540: for (my $c = 0; $c < $colspan; $c++) {
2541: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2542: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2543: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2544: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2545: }
2546: }
2547: }
2548: # Substitute all of the tables nested in this cell in their appropriate places.
2549:
2550:
2551: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2552: for (my $in=0; $in<=$nested_count; $in++) {
2553: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2554: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2555: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2556: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2557:
2558: }
2559: # Should be be killing off the 'include' elements as they're used up?
2560:
2561: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2562:
2563:
2564:
2565:
2566: # the colspan array will indicate how many columns will be spanned by this
2567: # cell..this requires that counter_columns also be adjusted accordingly
2568: # so that the next bunch of text goes in the right cell. Note that since
2569: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2570: #
2571:
2572: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2573: for (my $i = 0; $i < ($colspan -1); $i++) {
2574: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2575: }
2576: for (my $r = 0; $r < $rowspan; $r++) {
2577: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2578: # Put empty text in spanned cols.
2579:
2580: }
2581:
2582: }
2583:
2584: return '';
2585: }
2586:
2587: sub end_td {
2588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2589: my $currentstring = '';
2590: if ($target eq 'web' || $target eq 'webgrade') {
2591: $currentstring = $token->[2];
2592: } elsif ($target eq 'tex') {
2593: $Apache::londefdef::TD_redirection =0;
2594: &end_td_tex($parstack,$parser,$safeeval);
2595: }
2596: return $currentstring;
2597: }
2598:
2599: #-- <th> tag (end tag optional)
2600: sub start_th {
2601: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2602: my $currentstring = '';
2603: if ($target eq 'web' || $target eq 'webgrade') {
2604: $currentstring = $token->[4];
2605: } elsif ($target eq 'tex') {
2606: $Apache::londefdef::TD_redirection = 1;
2607: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2608: }
2609: return $currentstring;
2610: }
2611:
2612: sub tagg_check {
2613: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2614: my @ar=@$parstack;
2615: for (my $i=$#ar-1;$i>=0;$i--) {
2616: if (lc($$tagstack[$i]) eq $good_tag) {
2617: &start_th_tex($parstack,$parser,$safeeval);
2618: last;
2619: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2620: splice @ar, $i+1;
2621: &end_th_tex(\@ar,$parser,$safeeval);
2622: &start_th_tex($parstack,$parser,$safeeval);
2623: last;
2624: }
2625: }
2626: return '';
2627: }
2628:
2629: sub start_th_tex {
2630: my ($parstack,$parser,$safeeval) = @_;
2631:
2632: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2633: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2634: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2635:
2636: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2637: my $table = $Apache::londefdef::table[-1];
2638: $table->add_cell('\textbf{', $config);
2639:
2640: #-------------------------------------------------------------------------------------
2641: #
2642: # Old table code.
2643: #
2644: #--------------------------------------------------------------------------------------
2645:
2646: if (0) {
2647:
2648:
2649: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2650: if ($alignchar eq '') {
2651: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2652: }
2653: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2654: $Apache::londefdef::table[-1]{'counter_columns'}++;
2655: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2656: if (defined $TeXwidth) {
2657: my $current_length=&recalc($TeXwidth);
2658: $current_length=~/(\d+\.?\d*)/;
2659: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2660: }
2661: }
2662:
2663: # Accept xml until the </th> tag.
2664:
2665: &Apache::lonxml::startredirection();
2666: return '';
2667: }
2668:
2669: sub end_th_tex {
2670: my ($parstack,$parser,$safeeval) = @_;
2671:
2672: my $table = $Apache::londefdef::table[-1];
2673: my $text = &Apache::lonxml::endredirection();
2674: $table->append_cell_text($text.'}');
2675:
2676: #-----------------------------------------------------------------------------
2677: # Old table code:
2678: #-----------------------------------------------------------------------------
2679:
2680: if (0) {
2681: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2682: my $data=&Apache::lonxml::endredirection();
2683: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2684: if (defined $TeXwidth) {
2685: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2686: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2687: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2688: } else {
2689: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2690: my $garbage_data=$data;
2691: my $fwidth=0;
2692: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2693: my $current_length=&recalc($1);
2694: $current_length=~/(\d+\.?\d*)/;
2695: if ($fwidth<$1) {$fwidth=$1;}
2696: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2697: }
2698: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2699: my $current_length=$1;
2700: if ($fwidth<$current_length) {$fwidth=$current_length;}
2701: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2702: }
2703: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2704: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2705: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2706: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2707: } else {
2708: $data=~s/^\s+(\S.*)/$1/;
2709: $data=~s/(.*\S)\s+$/$1/;
2710: $data=~s/(\s)+/$1/;
2711: my ($current_length,$min_length)=(0,0);
2712: if ($data=~/\\vskip/) {
2713: my $newdata=$data;
2714: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2715: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2716: foreach my $elementdata (@newdata) {
2717: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2718: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2719: my @words=split(/ /,$elementdata);
2720: foreach my $word (@words) {
2721: my $lengthword=2.5*&LATEX_length($word);
2722: if ($min_length<$lengthword) {$min_length=$lengthword;}
2723: }
2724: }
2725: } else {
2726: $current_length=2.5*&LATEX_length($data);
2727: my @words=split(/ /,$data);
2728: foreach my $word (@words) {
2729: my $lengthword=2*&LATEX_length($word);
2730: if ($min_length<$lengthword) {$min_length=$lengthword;}
2731: }
2732: }
2733: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2734: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2735: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2736: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2737: }
2738: }
2739: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2740: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2741: }
2742: #make data bold
2743: $data='\textbf{'.$data.'}';
2744: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2745: }
2746: return'';
2747: }
2748:
2749: sub end_th {
2750: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2751: my $currentstring = &end_p(); # Close any open <p> in the row.
2752: if ($target eq 'web' || $target eq 'webgrade') {
2753: $currentstring .= $token->[2];
2754: } elsif ($target eq 'tex') {
2755: $Apache::londefdef::TD_redirection =0;
2756: &end_th_tex($parstack,$parser,$safeeval);
2757: }
2758: return $currentstring;
2759: }
2760:
2761: #-- <img> tag (end tag forbidden)
2762: #
2763: # Render the <IMG> tag.
2764: # <IMG> has the following attributes (in addition to the
2765: # standard HTML ones:
2766: # TeXwrap - Governs how the tex target will try to wrap text around
2767: # horizontally aligned images.
2768: # TeXwidth - The width of the image when rendered for print (mm).
2769: # TeXheight - The height of the image when rendered for print (mm)
2770: # (Note there seems to also be support for this as a % of page size)
2771: #
2772: sub start_img {
2773: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2774: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2775: undef,1);
2776: if (! $src &&
2777: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2778: ) {
2779: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2780: return '';
2781: }
2782: unless ($src =~ m{^data\:image/gif;base64,}) {
2783: &Apache::lonxml::extlink($src);
2784: }
2785: my $currentstring = '';
2786: my $scaling = .3;
2787:
2788: # Render unto browsers that which are the browser's...
2789:
2790: if ($target eq 'web' || $target eq 'webgrade') {
2791: my $enc = ('yes' eq
2792: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2793: $safeeval)));
2794: unless ($src =~ m{^data\:image/gif;base64,}) {
2795: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2796: $enc);
2797: }
2798:
2799: # and render unto TeX that which is LaTeX
2800: } elsif ($target eq 'tex') {
2801: #
2802: # The alignment will require some superstructure to be put around
2803: # the \includegraphics stuff. At present we can only partially
2804: # simulate the alignments offered by html.
2805: #
2806: #
2807: my $align = lc(&Apache::lonxml::get_param('align',
2808: $parstack,
2809: $safeeval,
2810: undef,1));
2811: if(!$align) {
2812: $align = "bottom"; # This is html's default so it's ours too.
2813: }
2814: #
2815: &Apache::lonxml::debug("Alignemnt = $align");
2816: # LaTeX's image/text wrapping is really bad since it wants to
2817: # make figures float.
2818: # The user has the optional parameter (applicable only to l/r
2819: # alignment to use the picins/parpic directive to get wrapped text
2820: # this is also imperfect.. that's why we give them a choice...
2821: # so they can't yell at us for our choice.
2822: #
2823: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2824: $parstack,
2825: $safeeval,
2826: undef,0);
2827: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2828: if(!$latex_rendering) {
2829: $latex_rendering = "texwrap";
2830: }
2831: # using texwrap inside a table does not work. So, if after all of this,
2832: # texwrap is on, we turn it off if we detect we're in a table:
2833: #
2834: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2835: $latex_rendering = 'parpic';
2836: }
2837:
2838: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2839:
2840: #if original bmp/gif/jpg/png/svg file exist do following:
2841: my $origsrc=$src;
2842: my ($path,$file) = &get_eps_image($src);
2843: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2844: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2845: &Apache::lonxml::debug("path = $path file = $file src = $src");
2846: if (-e $src) {
2847: &Apache::lonxml::debug("$src exists");
2848: my ($height_param,$width_param)=
2849: &image_size($origsrc,0.3,$parstack,$safeeval);
2850: my $size;
2851: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2852: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2853: # Default size if not able to extract that (e.g. eps image).
2854:
2855: # &Apache::lonnet::logthis("Size = $size");
2856:
2857: $size='['.$size;
2858: $size=~s/,$/]/;
2859: $currentstring .= '\graphicspath{{'.$path.'}}'
2860: .'\includegraphics'.$size.'{'.$file.'} ';
2861: my $closure;
2862: ($currentstring, $closure) = &align_latex_image($align,
2863: $latex_rendering,
2864: $currentstring,
2865: $width_param,
2866: $height_param);
2867: $currentstring .= $closure;
2868:
2869: } else {
2870: &Apache::lonxml::debug("$src does not exist");
2871: #original image file doesn't exist so check the alt attribute
2872: my $alt =
2873: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2874: unless ($alt) {
2875: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2876: }
2877:
2878: if ($alt) { $currentstring .= ' '.$alt.' '; }
2879: }
2880:
2881: # And here's where the semi-quote breaks down: allow the user
2882: # to edit the beast as well by rendering the problem for edit:
2883: } elsif ($target eq 'edit') {
2884: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2885: $currentstring .=&Apache::edit::tag_start($target,$token);
2886: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2887: &Apache::edit::browse('src',undef,'alt',$only).' '.
2888: &Apache::edit::search('src',undef,'alt').'<br />';
2889: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2890: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2891: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2892: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2893: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2894: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2895: ['','bottom','middle','top','left','right'],$token,5);
2896: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2897: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2898: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2899: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2900:
2901: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2902: ['no','yes'], $token, 2);
2903: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2904: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2905: }
2906: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2907: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2908: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2909: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2910:
2911: if ($token->[2]{'src'}=~/\$/) {
2912: $currentstring.=&mt('Variable image source');
2913: } elsif ($token->[2]{'src'}=~/\S/) {
2914: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2915: if ($width) { $currentstring.=' width="'.$width.'" '; }
2916: if ($height) { $currentstring.=' height="'.$height.'" '; }
2917: $currentstring .= ' />';
2918: } else {
2919: $currentstring.=&mt("No image source specified");
2920: }
2921: } elsif ($target eq 'modified') {
2922: my ($osrc,$owidth,$oheight)=
2923: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2924: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2925: $safeeval,'src','alt','align',
2926: 'TeXwidth','TeXheight', 'TeXwrap',
2927: 'width','height','encrypturl');
2928: my ($nsrc,$nwidth,$nheight)=
2929: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2930: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2931: &image_replication($loc);
2932: my ($iwidth,$iheight);
2933: if (-e $loc) {
2934: my $image = Image::Magick->new;
2935: $image->Read($loc);
2936: ($iwidth, $iheight) = ($image->Get('width'),
2937: $image->Get('height'));
2938: }
2939: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2940: # changed image or no size specified,
2941: # if they didn't explicitly change the
2942: # width or height use the ones from the image
2943: if ($iwidth && $iheight) {
2944: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2945: $token->[2]{'width'} = $iwidth;$ctag=1;
2946: }
2947: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2948: $token->[2]{'height'}=$iheight;$ctag=1;
2949: }
2950: }
2951: }
2952: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2953: # if we don't have a width or height
2954: if ($iwidth && $cwidth && !$cheight) {
2955: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2956: }
2957: if ($iheight && $cheight && !$cwidth) {
2958: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2959: }
2960: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2961: }
2962:
2963: return $currentstring;
2964: }
2965:
2966: sub end_img {
2967: my ($target,$token) = @_;
2968: my $currentstring = '';
2969: if ($target eq 'web' || $target eq 'webgrade') {
2970: $currentstring = $token->[2];
2971: } elsif ($target eq 'tex') {
2972: $currentstring = '';
2973: }
2974: return $currentstring;
2975: }
2976:
2977: #-- <applet> tag (end tag required)
2978: sub start_applet {
2979: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2980:
2981: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2982: &Apache::lonxml::extlink($code);
2983: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2984: undef,1);
2985: &Apache::lonxml::extlink($archive);
2986: my $currentstring = '';
2987: if ($target eq 'web' || $target eq 'webgrade') {
2988: $currentstring = $token->[4];
2989: } elsif ($target eq 'tex') {
2990: # Turn off some stuff we can't be inside thank you LaTeX
2991:
2992: my $restart_sub = 0;
2993: my $restart_sup = 0;
2994:
2995: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2996: # using the start_ stop_ functions.. those tags only care about
2997: # $target.
2998:
2999: if (&is_inside_of($tagstack, "sub")) {
3000: $restart_sub = 1;
3001: $currentstring .= &end_sub($target, $token, $tagstack,
3002: $parstack, $parser, $safeeval);
3003: }
3004: if (&is_inside_of($tagstack, "sup")) {
3005: $restart_sup = 1;
3006: $currentstring .= &end_sup($target, $token, $tagstack,
3007: $parstack, $parser, $safeeval);
3008: }
3009:
3010: # Now process the applet; just replace it with its alt attribute.
3011:
3012: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3013: $safeeval,undef,1);
3014: unless ($alttag) {
3015: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3016: undef,1);
3017: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3018: $code);
3019: }
3020: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3021: '.}\end{center}';
3022:
3023: # Turn stuff back on that we can't be inside of.
3024:
3025: if ($restart_sub) {
3026: $currentstring .= &start_sub($target, $token, $tagstack,
3027: $parstack, $parser, $safeeval);
3028: }
3029: if ($restart_sup) {
3030: $currentstring .= &start_sup($target, $token, $tagstack,
3031: $parstack, $parser, $safeeval);
3032: }
3033: }
3034: return $currentstring;
3035: }
3036:
3037: sub end_applet {
3038: my ($target,$token) = @_;
3039: my $currentstring = '';
3040: if ($target eq 'web' || $target eq 'webgrade') {
3041: $currentstring = $token->[2];
3042: } elsif ($target eq 'tex') {
3043: }
3044: return $currentstring;
3045: }
3046:
3047: #-- <embed> tag (end tag optional/required)
3048: sub start_embed {
3049: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3050: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3051: &Apache::lonxml::extlink($src);
3052: my $currentstring = '';
3053: if ($target eq 'web' || $target eq 'webgrade') {
3054: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3055: } elsif ($target eq 'tex') {
3056: }
3057: return $currentstring;
3058: }
3059:
3060: sub end_embed {
3061: my ($target,$token) = @_;
3062: my $currentstring = '';
3063: if ($target eq 'web' || $target eq 'webgrade') {
3064: $currentstring = $token->[2];
3065: } elsif ($target eq 'tex') {
3066: # ./.
3067: }
3068: return $currentstring;
3069: }
3070:
3071: #-- <param> tag (end tag forbidden)
3072: sub start_param {
3073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3074: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3075: undef,1);
3076: if ($name =~/^cabbase$/i) {
3077: my $value=&Apache::lonxml::get_param('value',$parstack,
3078: $safeeval,undef,1);
3079: &Apache::lonxml::extlink($value);
3080: } elsif ($name eq 'flashvars') {
3081: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3082: eq 'application/x-shockwave-flash') {
3083: my $launcher =
3084: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3085: if ($launcher) {
3086: &Apache::lonxml::extlink($launcher);
3087: }
3088: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3089: $safeeval,undef,1);
3090: if ($flashvars ne '') {
3091: foreach my $item (split(/\&/,$flashvars)) {
3092: my ($key,$value)=split(/=/,$item,2);
3093: if ($key eq 'content') {
3094: if ($value ne '') {
3095: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3096: &Apache::lonxml::extlink($dir.$value);
3097: }
3098: } elsif ($key eq 'thumb') {
3099: if ($value ne '') {
3100: &Apache::lonxml::extlink($value);
3101: }
3102: }
3103: }
3104: }
3105: }
3106: }
3107: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3108: if ($src ne '') {
3109: &Apache::lonxml::extlink($src);
3110: }
3111: my $currentstring = '';
3112: if ($target eq 'web' || $target eq 'webgrade') {
3113: my %toconvert;
3114: if ($src) { $toconvert{'src'}= $src; }
3115: if ($name=~/^cabbase$/i) {
3116: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3117: $safeeval,undef,1);
3118: }
3119: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3120: } elsif ($target eq 'tex') {
3121: }
3122: return $currentstring;
3123: }
3124:
3125: sub end_param {
3126: my ($target,$token) = @_;
3127: my $currentstring = '';
3128: if ($target eq 'web' || $target eq 'webgrade') {
3129: $currentstring = $token->[2];
3130: } elsif ($target eq 'tex') {
3131: }
3132: return $currentstring;
3133: }
3134:
3135: #-- <allow> tag
3136: sub start_allow {
3137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3138: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3139: &Apache::lonxml::extlink($src);
3140:
3141: if ($target eq 'tex') { &image_replication($src); }
3142: my $result;
3143: if ($target eq 'edit') {
3144: $result .=&Apache::edit::tag_start($target,$token);
3145: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3146: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3147: } elsif ($target eq 'modified') {
3148: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3149: $safeeval,'src');
3150: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3151: }
3152: return $result;
3153: }
3154:
3155: sub end_allow {
3156: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3157: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3158: return '';
3159: }
3160:
3161: #-- Frames (end tag required)
3162: #-- <frameset>
3163: sub start_frameset {
3164: my ($target,$token) = @_;
3165: my $currentstring = ''; # Close any pending para.
3166: if ($target eq 'web' || $target eq 'webgrade') {
3167: $currentstring =
3168: &Apache::loncommon::start_page($Apache::londefdef::title,
3169: $Apache::londefdef::head,
3170: {'add_entries' => $token->[2],
3171: # 'no_title' => 1,
3172: 'force_register' => 1,
3173: 'frameset' => 1,});
3174:
3175: }
3176: return $currentstring;
3177: }
3178:
3179: sub end_frameset {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web' || $target eq 'webgrade') {
3183: $currentstring = $token->[2];
3184: }
3185: return $currentstring;
3186: }
3187:
3188: #-- <xmp> (end tag required)
3189: sub start_xmp {
3190: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3191: my $currentstring = '';
3192: if ($target eq 'web' || $target eq 'webgrade') {
3193: $currentstring .= $token->[4];
3194: } elsif ($target eq 'tex') {
3195: $currentstring .= '\begin{verbatim}';
3196: }
3197: return $currentstring;
3198: }
3199:
3200: sub end_xmp {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web' || $target eq 'webgrade') {
3204: $currentstring .= $token->[2];
3205: } elsif ($target eq 'tex') {
3206: $currentstring .= '\end{verbatim}';
3207: }
3208: return $currentstring;
3209: }
3210:
3211: #-- <pre> (end tag required)
3212: sub start_pre {
3213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3214: my $currentstring = &end_p(); # close off pending <p>
3215: if ($target eq 'web' || $target eq 'webgrade') {
3216: $currentstring .= $token->[4];
3217: } elsif ($target eq 'tex') {
3218: $currentstring .= '\begin{verbatim}';
3219: &Apache::lonxml::disable_LaTeX_substitutions();
3220: }
3221: return $currentstring;
3222: }
3223:
3224: sub end_pre {
3225: my ($target,$token) = @_;
3226: my $currentstring = '';
3227: if ($target eq 'web' || $target eq 'webgrade') {
3228: $currentstring .= $token->[2];
3229: } elsif ($target eq 'tex') {
3230: $currentstring .= '\end{verbatim}';
3231: &Apache::lonxml::enable_LaTeX_substitutions();
3232: }
3233: return $currentstring;
3234: }
3235:
3236: #-- <insert>
3237: sub start_insert {
3238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3239: my $currentstring = '';
3240: if ($target eq 'web' || $target eq 'webgrade') {
3241: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3242: $currentstring .= '<b>'.$display.'</b>';;
3243: }
3244: return $currentstring;
3245: }
3246:
3247: sub end_insert {
3248: my ($target,$token) = @_;
3249: my $currentstring = '';
3250: if ($target eq 'web' || $target eq 'webgrade') {
3251: $currentstring .= '';
3252: }
3253: return $currentstring;
3254: }
3255:
3256: #-- <externallink>
3257: sub start_externallink {
3258: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3259: my $currentstring = '';
3260: if ($target eq 'web' || $target eq 'webgrade') {
3261: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3262: $currentstring .= '<b>'.$display.'</b>';;
3263: }
3264: return $currentstring;
3265: }
3266:
3267: sub end_externallink {
3268: my ($target,$token) = @_;
3269: my $currentstring = '';
3270: if ($target eq 'web' || $target eq 'webgrade') {
3271: $currentstring .= '';
3272: }
3273: return $currentstring;
3274: }
3275:
3276: #-- <blankspace height="">
3277: sub start_blankspace {
3278: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3279: my $currentstring = &end_p(); # closes off any unclosed <p>
3280: if ($target eq 'tex') {
3281: my $howmuch = &Apache::lonxml::get_param('height',$parstack,$safeeval,undef,1);
3282: $currentstring .= '\vskip '.$howmuch.' ';
3283: }
3284: return $currentstring;
3285: }
3286:
3287: sub end_blankspace {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'tex') {
3291: $currentstring .= '';
3292: }
3293: return $currentstring;
3294: }
3295:
3296: #-- <abbr> tag (end tag required)
3297: sub start_abbr {
3298: my ($target,$token) = @_;
3299: my $currentstring = '';
3300: if ($target eq 'web' || $target eq 'webgrade') {
3301: $currentstring = $token->[4];
3302: }
3303: return $currentstring;
3304: }
3305:
3306: sub end_abbr {
3307: my ($target,$token) = @_;
3308: my $currentstring = '';
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring = $token->[2];
3311: }
3312: return $currentstring;
3313: }
3314:
3315: #-- <acronym> tag (end tag required)
3316: sub start_acronym {
3317: my ($target,$token) = @_;
3318: my $currentstring = '';
3319: if ($target eq 'web' || $target eq 'webgrade') {
3320: $currentstring = $token->[4];
3321: }
3322: return $currentstring;
3323: }
3324:
3325: sub end_acronym {
3326: my ($target,$token) = @_;
3327: my $currentstring = '';
3328: if ($target eq 'web' || $target eq 'webgrade') {
3329: $currentstring = $token->[2];
3330: }
3331: return $currentstring;
3332: }
3333:
3334: #-- <area> tag (end tag forbidden)
3335: sub start_area {
3336: my ($target,$token) = @_;
3337: my $currentstring = '';
3338: if ($target eq 'web' || $target eq 'webgrade') {
3339: $currentstring = $token->[4];
3340: }
3341: return $currentstring;
3342: }
3343:
3344: sub end_area {
3345: my ($target,$token) = @_;
3346: my $currentstring = '';
3347: if ($target eq 'web' || $target eq 'webgrade') {
3348: $currentstring = $token->[2];
3349: }
3350: return $currentstring;
3351: }
3352:
3353: #-- <base> tag (end tag forbidden)
3354: sub start_base {
3355: my ($target,$token) = @_;
3356: my $currentstring = '';
3357: if ($target eq 'web' || $target eq 'webgrade') {
3358: $currentstring = $token->[4];
3359: }
3360: return $currentstring;
3361: }
3362:
3363: sub end_base {
3364: my ($target,$token) = @_;
3365: my $currentstring = '';
3366: if ($target eq 'web' || $target eq 'webgrade') {
3367: $currentstring = $token->[2];
3368: }
3369: return $currentstring;
3370: }
3371:
3372: #-- <bdo> tag (end tag required)
3373: sub start_bdo {
3374: my ($target,$token) = @_;
3375: my $currentstring = '';
3376: if ($target eq 'web' || $target eq 'webgrade') {
3377: $currentstring = $token->[4];
3378: }
3379: return $currentstring;
3380: }
3381:
3382: sub end_bdo {
3383: my ($target,$token) = @_;
3384: my $currentstring = '';
3385: if ($target eq 'web' || $target eq 'webgrade') {
3386: $currentstring = $token->[2];
3387: }
3388: return $currentstring;
3389: }
3390:
3391: #-- <bgsound> tag (end tag optional)
3392: sub start_bgsound {
3393: my ($target,$token) = @_;
3394: my $currentstring = '';
3395: if ($target eq 'web' || $target eq 'webgrade') {
3396: $currentstring = $token->[4];
3397: }
3398: return $currentstring;
3399: }
3400:
3401: sub end_bgsound {
3402: my ($target,$token) = @_;
3403: my $currentstring = '';
3404: if ($target eq 'web' || $target eq 'webgrade') {
3405: $currentstring = $token->[2];
3406: }
3407: return $currentstring;
3408: }
3409:
3410: #-- <blink> tag (end tag required)
3411: sub start_blink {
3412: my ($target,$token) = @_;
3413: my $currentstring = '';
3414: if ($target eq 'web' || $target eq 'webgrade') {
3415: $currentstring = $token->[4];
3416: }
3417: return $currentstring;
3418: }
3419:
3420: sub end_blink {
3421: my ($target,$token) = @_;
3422: my $currentstring = '';
3423: if ($target eq 'web' || $target eq 'webgrade') {
3424: $currentstring = $token->[2];
3425: }
3426: return $currentstring;
3427: }
3428:
3429: #-- <blockquote> tag (end tag required)
3430: sub start_blockquote {
3431: my ($target,$token) = @_;
3432: my $currentstring = &end_p(); # Close any unclosed <p>
3433: if ($target eq 'web' || $target eq 'webgrade') {
3434: $currentstring .= $token->[4];
3435: }
3436: if ($target eq 'tex') {
3437: $currentstring .= '\begin{quote}';
3438: }
3439: return $currentstring;
3440: }
3441:
3442: sub end_blockquote {
3443: my ($target,$token) = @_;
3444: my $currentstring = '';
3445: if ($target eq 'web' || $target eq 'webgrade') {
3446: $currentstring = $token->[2];
3447: }
3448: if ($target eq 'tex') {
3449: $currentstring = '\end{quote}';
3450: }
3451: return $currentstring;
3452: }
3453:
3454: #-- <button> tag (end tag required)
3455: sub start_button {
3456: my ($target,$token) = @_;
3457: my $currentstring = '';
3458: if ($target eq 'web' || $target eq 'webgrade') {
3459: $currentstring = $token->[4];
3460: }
3461: return $currentstring;
3462: }
3463:
3464: sub end_button {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web' || $target eq 'webgrade') {
3468: $currentstring = $token->[2];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: #-- <caption> tag (end tag required)
3474: sub start_caption {
3475: my ($target,$token) = @_;
3476: my $currentstring = '';
3477: if ($target eq 'web' || $target eq 'webgrade') {
3478: $currentstring = $token->[4];
3479: }
3480: return $currentstring;
3481: }
3482:
3483: sub end_caption {
3484: my ($target,$token) = @_;
3485: my $currentstring = '';
3486: if ($target eq 'web' || $target eq 'webgrade') {
3487: $currentstring = $token->[2];
3488: }
3489: return $currentstring;
3490: }
3491:
3492: #-- <col> tag (end tag forbdden)
3493: sub start_col {
3494: my ($target,$token) = @_;
3495: my $currentstring = '';
3496: if ($target eq 'web' || $target eq 'webgrade') {
3497: $currentstring = $token->[4];
3498: }
3499: return $currentstring;
3500: }
3501:
3502: sub end_col {
3503: my ($target,$token) = @_;
3504: my $currentstring = '';
3505: if ($target eq 'web' || $target eq 'webgrade') {
3506: $currentstring = $token->[2];
3507: }
3508: return $currentstring;
3509: }
3510:
3511: #-- <colgroup tag (end tag optional)
3512: sub start_colgroup {
3513: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3514: my $currentstring = '';
3515: if ($target eq 'web' || $target eq 'webgrade') {
3516: $currentstring = $token->[4];
3517: }
3518: if ($target eq 'tex') {
3519: # TODO: Ensure this tag is in a table:
3520:
3521: # Fetch the attributes and build the hash for the
3522: # call to define_colgroup.
3523:
3524: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3525: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3526:
3527: my %colgroup_params;
3528: if ($span ne '') {
3529: $colgroup_params{'span'} = $span;
3530: }
3531: if ($halign ne '') {
3532: $colgroup_params{'halign'} = $halign;
3533: }
3534:
3535: my $table = $Apache::londefdef::table[-1];
3536: $table->define_colgroup(\%colgroup_params);
3537:
3538: }
3539: return $currentstring;
3540: }
3541:
3542: sub end_colgroup {
3543: my ($target,$token) = @_;
3544: my $currentstring = '';
3545: if ($target eq 'web' || $target eq 'webgrade') {
3546: $currentstring = $token->[2];
3547: }
3548: return $currentstring;
3549: }
3550:
3551:
3552: #-- <del> tag (end tag required)
3553: sub start_del {
3554: my ($target,$token) = @_;
3555: my $currentstring = '';
3556: if ($target eq 'web' || $target eq 'webgrade') {
3557: $currentstring = $token->[4];
3558: } elsif ($target eq 'tex') {
3559: &disable_para();
3560: $currentstring .= '\st{';
3561: }
3562: return $currentstring;
3563: }
3564:
3565: sub end_del {
3566: my ($target,$token) = @_;
3567: my $currentstring = '';
3568: if ($target eq 'web' || $target eq 'webgrade') {
3569: $currentstring = $token->[2];
3570: } elsif ($target eq 'tex') {
3571: &enable_para();
3572: $currentstring = '}';
3573: }
3574: return $currentstring;
3575: }
3576:
3577: #-- <fieldset> tag (end tag required)
3578: sub start_fieldset {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web' || $target eq 'webgrade') {
3582: $currentstring = $token->[4];
3583: }
3584: return $currentstring;
3585: }
3586:
3587: sub end_fieldset {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring = $token->[2];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: #-- <frame> tag (end tag forbidden)
3597: sub start_frame {
3598: my ($target,$token) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web' || $target eq 'webgrade') {
3601: $currentstring = $token->[4];
3602: }
3603: return $currentstring;
3604: }
3605:
3606: sub end_frame {
3607: my ($target,$token) = @_;
3608: my $currentstring = '';
3609: if ($target eq 'web' || $target eq 'webgrade') {
3610: $currentstring = $token->[2];
3611: }
3612: return $currentstring;
3613: }
3614:
3615: #-- <iframe> tag (end tag required)
3616: sub start_iframe {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web' || $target eq 'webgrade') {
3620: my ($src,$url,$query);
3621: if ($token->[2]->{'src'}) {
3622: $src = $token->[2]->{'src'};
3623: } elsif ($token->[2]->{'SRC'}) {
3624: $src = $token->[2]->{'SRC'};
3625: }
3626: if ($src) {
3627: ($url,$query) = ($src =~ /^([^?]+)\??([^?]*)$/);
3628: if ($query =~ /inhibitmenu=yes/) {
3629: $currentstring = $token->[4];
3630: } else {
3631: my $inhibit;
3632: if ($url =~ m{^[^/.].*\.x?html?$}) {
3633: $inhibit = 1;
3634: } elsif ($url =~ m{^/(uploaded|res)/.*\.x?html?$}) {
3635: $inhibit = 1;
3636: }
3637: if ($inhibit) {
3638: $currentstring = '<iframe ';
3639: foreach my $attrib (@{$token->[3]}) {
3640: if (lc($attrib) eq 'src') {
3641: if ($query) {
3642: $query.='&inhibitmenu=yes';
3643: } else {
3644: $query = 'inhibitmenu=yes';
3645: }
3646: $currentstring .= 'src="'.$url.'?'.$query.'" ';
3647: } else {
3648: $currentstring .= lc($attrib).'="'.$token->[2]->{$attrib}.'" ';
3649: }
3650: }
3651: $currentstring =~ s/\s+$//;
3652: if ($token->[4] =~ m{/>$}) {
3653: $currentstring .= ' />';
3654: } else {
3655: $currentstring .= '>';
3656: }
3657: } else {
3658: $currentstring = $token->[4];
3659: }
3660: }
3661: if (($url !~ m{^https?://}) && ($env{'request.course.id'})) {
3662: my $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
3663: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3664: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3665: if ($url =~ m{^([^/]|/uploaded/)}) {
3666: my $cleanhref = &clean_docs_httpref($url,$docuri,$cdom,$cnum);
3667: if ($cleanhref) {
3668: &Apache::lonxml::extlink($cleanhref);
3669: }
3670: } elsif (($url =~ m{/res/$LONCAPA::domain_re/}) && ($docuri =~ m{^\Q/uploaded/$cdom/$cnum/docs/\E})) {
3671: if (!&Apache::lonnet::allowed('bre',$url)) {
3672: if (&Apache::lonnet::is_on_map($url)) {
3673: &Apache::lonxml::extlink($url);
3674: }
3675: }
3676: }
3677: }
3678: } else {
3679: $currentstring = $token->[4];
3680: }
3681: }
3682: return $currentstring;
3683: }
3684:
3685: sub end_iframe {
3686: my ($target,$token) = @_;
3687: my $currentstring = '';
3688: if ($target eq 'web' || $target eq 'webgrade') {
3689: $currentstring = $token->[2];
3690: }
3691: return $currentstring;
3692: }
3693:
3694: #-- <ins> tag (end tag required)
3695: sub start_ins {
3696: my ($target,$token) = @_;
3697: my $currentstring = '';
3698: if ($target eq 'web' || $target eq 'webgrade') {
3699: $currentstring = $token->[4];
3700: }
3701: return $currentstring;
3702: }
3703:
3704: sub end_ins {
3705: my ($target,$token) = @_;
3706: my $currentstring = '';
3707: if ($target eq 'web' || $target eq 'webgrade') {
3708: $currentstring = $token->[2];
3709: }
3710: return $currentstring;
3711: }
3712:
3713: #-- <isindex> tag (end tag forbidden)
3714: sub start_isindex {
3715: my ($target,$token) = @_;
3716: my $currentstring = '';
3717: if ($target eq 'web' || $target eq 'webgrade') {
3718: $currentstring = $token->[4];
3719: }
3720: return $currentstring;
3721: }
3722:
3723: sub end_isindex {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web' || $target eq 'webgrade') {
3727: $currentstring = $token->[2];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: #-- <keygen> tag (end tag forbidden)
3733: sub start_keygen {
3734: my ($target,$token) = @_;
3735: my $currentstring = '';
3736: if ($target eq 'web' || $target eq 'webgrade') {
3737: $currentstring = $token->[4];
3738: }
3739: return $currentstring;
3740: }
3741:
3742: sub end_keygen {
3743: my ($target,$token) = @_;
3744: my $currentstring = '';
3745: if ($target eq 'web' || $target eq 'webgrade') {
3746: $currentstring = $token->[2];
3747: }
3748: return $currentstring;
3749: }
3750:
3751: #-- <label> tag
3752: sub start_label {
3753: my ($target,$token) = @_;
3754: my $currentstring = '';
3755: if ($target eq 'web' || $target eq 'webgrade') {
3756: $currentstring = $token->[4];
3757: }
3758: return $currentstring;
3759: }
3760:
3761: sub end_label {
3762: my ($target,$token) = @_;
3763: my $currentstring = '';
3764: if ($target eq 'web' || $target eq 'webgrade') {
3765: $currentstring = $token->[2];
3766: }
3767: return $currentstring;
3768: }
3769:
3770: #-- <layer> tag (end tag required)
3771: sub start_layer {
3772: my ($target,$token) = @_;
3773: my $currentstring = '';
3774: if ($target eq 'web' || $target eq 'webgrade') {
3775: $currentstring = $token->[4];
3776: }
3777: return $currentstring;
3778: }
3779:
3780: sub end_layer {
3781: my ($target,$token) = @_;
3782: my $currentstring = '';
3783: if ($target eq 'web' || $target eq 'webgrade') {
3784: $currentstring = $token->[2];
3785: }
3786: return $currentstring;
3787: }
3788:
3789: #-- <legend> tag (end tag required)
3790: sub start_legend {
3791: my ($target,$token) = @_;
3792: my $currentstring = '';
3793: if ($target eq 'web' || $target eq 'webgrade') {
3794: $currentstring = $token->[4];
3795: }
3796: return $currentstring;
3797: }
3798:
3799: sub end_legend {
3800: my ($target,$token) = @_;
3801: my $currentstring = '';
3802: if ($target eq 'web' || $target eq 'webgrade') {
3803: $currentstring = $token->[2];
3804: }
3805: return $currentstring;
3806: }
3807:
3808: #-- <link> tag (end tag forbidden)
3809: sub start_link {
3810: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3811: my $currentstring = '';
3812: if ($target eq 'web' || $target eq 'webgrade') {
3813: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3814: undef,1);
3815: &Apache::lonxml::extlink($href);
3816: $currentstring = $token->[4];
3817: }
3818: return $currentstring;
3819: }
3820:
3821: sub end_link {
3822: my ($target,$token) = @_;
3823: my $currentstring = '';
3824: if ($target eq 'web' || $target eq 'webgrade') {
3825: $currentstring = $token->[2];
3826: }
3827: return $currentstring;
3828: }
3829:
3830: #-- <marquee> tag (end tag optional)
3831: sub start_marquee {
3832: my ($target,$token) = @_;
3833: my $currentstring = '';
3834: if ($target eq 'web' || $target eq 'webgrade') {
3835: $currentstring = $token->[4];
3836: }
3837: return $currentstring;
3838: }
3839:
3840: sub end_marquee {
3841: my ($target,$token) = @_;
3842: my $currentstring = '';
3843: if ($target eq 'web' || $target eq 'webgrade') {
3844: $currentstring = $token->[2];
3845: }
3846: return $currentstring;
3847: }
3848:
3849: #-- <multicol> tag (end tag required)
3850: sub start_multicol {
3851: my ($target,$token) = @_;
3852: my $currentstring = &end_p(); # Close any pending <p>
3853: if ($target eq 'web' || $target eq 'webgrade') {
3854: $currentstring .= $token->[4];
3855: }
3856: return $currentstring;
3857: }
3858:
3859: sub end_multicol {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[2];
3864: }
3865: return $currentstring;
3866: }
3867:
3868: #-- <nobr> tag (end tag required)
3869: sub start_nobr {
3870: my ($target,$token) = @_;
3871: my $currentstring = '';
3872: if ($target eq 'web' || $target eq 'webgrade') {
3873: $currentstring = $token->[4];
3874: } elsif ($target eq 'tex') {
3875: $currentstring='\mbox{';
3876: }
3877: return $currentstring;
3878: }
3879:
3880: sub end_nobr {
3881: my ($target,$token) = @_;
3882: my $currentstring = '';
3883: if ($target eq 'web' || $target eq 'webgrade') {
3884: $currentstring = $token->[2];
3885: } elsif ($target eq 'tex') {
3886: $currentstring='}';
3887: }
3888: return $currentstring;
3889: }
3890:
3891: #-- <noembed> tag (end tag required)
3892: sub start_noembed {
3893: my ($target,$token) = @_;
3894: my $currentstring = '';
3895: if ($target eq 'web' || $target eq 'webgrade') {
3896: $currentstring = $token->[4];
3897: }
3898: return $currentstring;
3899: }
3900:
3901: sub end_noembed {
3902: my ($target,$token) = @_;
3903: my $currentstring = '';
3904: if ($target eq 'web' || $target eq 'webgrade') {
3905: $currentstring = $token->[2];
3906: }
3907: return $currentstring;
3908: }
3909:
3910: #-- <noframes> tag (end tag required)
3911: sub start_noframes {
3912: my ($target,$token) = @_;
3913: my $currentstring = '';
3914: if ($target eq 'web' || $target eq 'webgrade') {
3915: $currentstring = $token->[4];
3916: }
3917: return $currentstring;
3918: }
3919:
3920: sub end_noframes {
3921: my ($target,$token) = @_;
3922: my $currentstring = '';
3923: if ($target eq 'web' || $target eq 'webgrade') {
3924: $currentstring = $token->[2];
3925: }
3926: return $currentstring;
3927: }
3928:
3929: #-- <nolayer> tag (end tag required)
3930: sub start_nolayer {
3931: my ($target,$token) = @_;
3932: my $currentstring = '';
3933: if ($target eq 'web' || $target eq 'webgrade') {
3934: $currentstring = $token->[4];
3935: }
3936: return $currentstring;
3937: }
3938:
3939: sub end_nolayer {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[2];
3944: }
3945: return $currentstring;
3946: }
3947:
3948: #-- <noscript> tag (end tag required)
3949: sub start_noscript {
3950: my ($target,$token) = @_;
3951: my $currentstring = '';
3952: if ($target eq 'web' || $target eq 'webgrade') {
3953: $currentstring = $token->[4];
3954: }
3955: return $currentstring;
3956: }
3957:
3958: sub end_noscript {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[2];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: #-- <object> tag (end tag required)
3968: sub start_object {
3969: my ($target,$token) = @_;
3970: my $currentstring = '';
3971: if ($target eq 'web' || $target eq 'webgrade') {
3972: $currentstring = $token->[4];
3973: }
3974: return $currentstring;
3975: }
3976:
3977: sub end_object {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[2];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: #-- <optgroup> tag (end tag required)
3987: sub start_optgroup {
3988: my ($target,$token) = @_;
3989: my $currentstring = '';
3990: if ($target eq 'web' || $target eq 'webgrade') {
3991: $currentstring = $token->[4];
3992: }
3993: return $currentstring;
3994: }
3995:
3996: sub end_optgroup {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[2];
4001: }
4002: return $currentstring;
4003: }
4004:
4005: #-- <samp> tag (end tag required)
4006: sub start_samp {
4007: my ($target,$token) = @_;
4008: my $currentstring = '';
4009: if ($target eq 'web' || $target eq 'webgrade') {
4010: $currentstring = $token->[4];
4011: } elsif ($target eq 'tex') {
4012: $currentstring='\texttt{';
4013: }
4014: return $currentstring;
4015: }
4016:
4017: sub end_samp {
4018: my ($target,$token) = @_;
4019: my $currentstring = '';
4020: if ($target eq 'web' || $target eq 'webgrade') {
4021: $currentstring = $token->[2];
4022: } elsif ($target eq 'tex') {
4023: $currentstring='}';
4024: }
4025: return $currentstring;
4026: }
4027:
4028: #-- <server> tag
4029: sub start_server {
4030: my ($target,$token) = @_;
4031: my $currentstring = '';
4032: if ($target eq 'web' || $target eq 'webgrade') {
4033: $currentstring = $token->[4];
4034: }
4035: return $currentstring;
4036: }
4037:
4038: sub end_server {
4039: my ($target,$token) = @_;
4040: my $currentstring = '';
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: $currentstring = $token->[2];
4043: }
4044: return $currentstring;
4045: }
4046:
4047: #-- <spacer> tag (end tag forbidden)
4048: sub start_spacer {
4049: my ($target,$token) = @_;
4050: my $currentstring = &end_p(); # Close off any open <p> tag.
4051: if ($target eq 'web' || $target eq 'webgrade') {
4052: $currentstring .= $token->[4];
4053: }
4054: return $currentstring;
4055: }
4056:
4057: sub end_spacer {
4058: my ($target,$token) = @_;
4059: my $currentstring = '';
4060: if ($target eq 'web' || $target eq 'webgrade') {
4061: $currentstring = $token->[2];
4062: }
4063: return $currentstring;
4064: }
4065:
4066: #-- <span> tag (end tag required)
4067: sub start_span {
4068: my ($target,$token) = @_;
4069: my $currentstring = '';
4070: if ($target eq 'web' || $target eq 'webgrade') {
4071: $currentstring = $token->[4];
4072: }
4073: return $currentstring;
4074: }
4075:
4076: sub end_span {
4077: my ($target,$token) = @_;
4078: my $currentstring = '';
4079: if ($target eq 'web' || $target eq 'webgrade') {
4080: $currentstring = $token->[2];
4081: }
4082: return $currentstring;
4083: }
4084:
4085: #-- <tbody> tag (end tag optional)
4086: sub start_tbody {
4087: my ($target,$token) = @_;
4088: my $currentstring = '';
4089: if ($target eq 'web' || $target eq 'webgrade') {
4090: $currentstring = $token->[4];
4091: }
4092: if ($target eq 'tex') {
4093: # TODO: Ensure this tag is within a table:
4094:
4095: my $table = $Apache::londefdef::table[-1];
4096: $table->start_body();
4097: }
4098: return $currentstring;
4099: }
4100:
4101: sub end_tbody {
4102: my ($target,$token) = @_;
4103: my $currentstring = '';
4104: if ($target eq 'web' || $target eq 'webgrade') {
4105: $currentstring = $token->[2];
4106: }
4107: if($target eq 'tex') {
4108: # TODO: Ensure this tag is within a table:
4109:
4110: my $table = $Apache::londefdef::table[-1];
4111: $table->end_body();
4112: }
4113: return $currentstring;
4114: }
4115:
4116: #-- <tfoot> tag (end tag optional)
4117: sub start_tfoot {
4118: my ($target,$token) = @_;
4119: my $currentstring = '';
4120: if ($target eq 'web' || $target eq 'webgrade') {
4121: $currentstring = $token->[4];
4122: }
4123: if ($target eq 'tex') {
4124: # TODO: ensure this is within a table tag.
4125: my $table = $Apache::londefdef::table[-1];
4126: $table->start_foot();
4127: }
4128: return $currentstring;
4129: }
4130:
4131: sub end_tfoot {
4132: my ($target,$token) = @_;
4133: my $currentstring = '';
4134: if ($target eq 'web' || $target eq 'webgrade') {
4135: $currentstring = $token->[2];
4136: }
4137: if ($target eq 'tex') {
4138: # TODO: Ensure this is in side a table
4139: my $table = $Apache::londefdef::table[-1];
4140: $table->end_foot();
4141: }
4142: return $currentstring;
4143: }
4144:
4145: #-- <thead> tag (end tag optional)
4146: sub start_thead {
4147: my ($target,$token) = @_;
4148: my $currentstring = '';
4149: if ($target eq 'web' || $target eq 'webgrade') {
4150: $currentstring = $token->[4];
4151: }
4152: if ($target eq 'tex') {
4153: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4154: my $table = $Apache::londefdef::table[-1];
4155: $table->start_head();
4156: }
4157: return $currentstring;
4158: }
4159:
4160: sub end_thead {
4161: my ($target,$token) = @_;
4162: my $currentstring = '';
4163: if ($target eq 'web' || $target eq 'webgrade') {
4164: $currentstring = $token->[2];
4165: }
4166: if ($target eq 'tex') {
4167: # TODO: Verify we are in a table and ignore tag if not.
4168:
4169: my $table = $Apache::londefdef::table[-1];
4170: $table->end_head();
4171: }
4172: return $currentstring;
4173: }
4174:
4175: #-- <var> tag
4176: sub start_var {
4177: my ($target,$token) = @_;
4178: my $currentstring = '';
4179: if ($target eq 'web' || $target eq 'webgrade') {
4180: $currentstring = $token->[4];
4181: } elsif ($target eq 'tex') {
4182: $currentstring = '\textit{';
4183: }
4184: return $currentstring;
4185: }
4186:
4187: sub end_var {
4188: my ($target,$token) = @_;
4189: my $currentstring = '';
4190: if ($target eq 'web' || $target eq 'webgrade') {
4191: $currentstring = $token->[2];
4192: } elsif ($target eq 'tex') {
4193: $currentstring = '}';
4194: }
4195: return $currentstring;
4196: }
4197:
4198: #-- <wbr> tag (end tag forbidden)
4199: sub start_wbr {
4200: my ($target,$token) = @_;
4201: my $currentstring = '';
4202: if ($target eq 'web' || $target eq 'webgrade') {
4203: $currentstring = $token->[4];
4204: }
4205: return $currentstring;
4206: }
4207:
4208: sub end_wbr {
4209: my ($target,$token) = @_;
4210: my $currentstring = '';
4211: if ($target eq 'web' || $target eq 'webgrade') {
4212: $currentstring = $token->[2];
4213: }
4214: return $currentstring;
4215: }
4216:
4217: #-- <hideweboutput> tag
4218: sub start_hideweboutput {
4219: my ($target,$token) = @_;
4220: if ($target eq 'web' || $target eq 'webgrade') {
4221: &Apache::lonxml::startredirection();
4222: }
4223: return '';
4224: }
4225:
4226: sub end_hideweboutput {
4227: my ($target,$token) = @_;
4228: my $currentstring = '';
4229: if ($target eq 'web' || $target eq 'webgrade') {
4230: $currentstring = &Apache::lonxml::endredirection();
4231: }
4232: return '';
4233: }
4234:
4235:
4236: sub image_replication {
4237: my $src = shift;
4238: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4239: #replicates eps or ps
4240: my $epssrc = my $pssrc = $src;
4241: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4242: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4243: if (not -e $epssrc && not -e $pssrc) {
4244: my $result=&Apache::lonnet::repcopy($epssrc);
4245: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4246: }
4247: return '';
4248: }
4249:
4250:
4251:
4252: sub resize_image {
4253: my ($height_param, $width_param, $scaling,
4254: $parstack, $safeeval, $depth, $cis) = @_;
4255:
4256: # First apply the scaling...
4257:
4258: $height_param = $height_param * $scaling;
4259: $width_param = $width_param * $scaling;
4260:
4261: #do we have any specified LaTeX size of the picture?
4262: my $toget='TeXwidth';
4263: if ($cis) {
4264: $toget=lc($toget);
4265: }
4266: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4267: $safeeval,$depth,$cis);
4268: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4269: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4270: $safeeval,$depth,$cis);
4271: #do we have any specified web size of the picture?
4272: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4273: $depth,1);
4274: if ($TeXwidth) {
4275: my $old_width_param=$width_param;
4276: if ($TeXwidth=~/(\d+)\s*\%/) {
4277: $width_param = $1*$env{'form.textwidth'}/100;
4278: } else {
4279: $width_param = $TeXwidth;
4280: }
4281: if ($TeXheight) {
4282: $height_param = $TeXheight;
4283: } elsif ($old_width_param) {
4284: $height_param=$TeXwidth/$old_width_param*$height_param;
4285: }
4286: } elsif ($TeXheight) {
4287: if ($height_param) {
4288: $width_param = $TeXheight/$height_param*$width_param;
4289: }
4290: $height_param = $TeXheight;
4291: } elsif ($width) {
4292: my $old_width_param=$width_param;
4293: $width_param = $width*$scaling;
4294: if ($old_width_param) {
4295: $height_param=$width_param/$old_width_param*$height_param;
4296: }
4297: }
4298: if ($width_param > $env{'form.textwidth'}) {
4299: my $old_width_param=$width_param;
4300: $width_param =0.95*$env{'form.textwidth'};
4301: if ($old_width_param) {
4302: $height_param=$width_param/$old_width_param*$height_param;
4303: }
4304: }
4305:
4306: return ($height_param, $width_param);
4307: }
4308:
4309: sub image_size {
4310: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4311:
4312: #size of image from gif/jpg/jpeg/png
4313: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4314: if (-e $ressrc) {
4315: $src = $ressrc;
4316: }
4317: my $image = Image::Magick->new;
4318: my $current_figure = $image->Read($src);
4319: my $width_param = $image->Get('width');
4320: my $height_param = $image->Get('height');
4321: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4322: undef($image);
4323:
4324: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4325: $scaling, $parstack, $safeeval,
4326: $depth, $cis);
4327:
4328: return ($height_param, $width_param);
4329: }
4330:
4331: sub image_width {
4332: my ($height, $width) = &image_size(@_);
4333: return $width;
4334: }
4335: # Not yet 100% sure this is correct in all circumstances..
4336: # due to my uncertainty about mods to image_size.
4337: #
4338: sub image_height {
4339: my ($height, $width) = &image_size(@_);
4340: return $height;
4341: }
4342:
4343: sub get_eps_image {
4344: my ($src)=@_;
4345: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4346:
4347: # In order to prevent the substitution of the alt text, we need to
4348: # be sure the orig_src file is on system now so:
4349:
4350: if (! -e $orig_src) {
4351: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4352: }
4353: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4354: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg|svg)/i);
4355: $src=~s/\.(bmp|gif|png|jpg|jpeg|svg)$/\.eps/i;
4356: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4357: &Apache::lonxml::debug("Filelocation gives: $src");
4358: if (! -e $src) {
4359: &Apache::lonxml::debug("$src does not exist");
4360: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4361: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4362: #if replication failed try to find ps file
4363: $src=~s/\.eps$/\.ps/;
4364: &Apache::lonxml::debug("Now looking for $src");
4365: #if no ps file try to replicate it.
4366: my $didrepcopy = &Apache::lonnet::repcopy($src);
4367: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4368: if ( (not -e $src) ||
4369: ($didrepcopy ne 'ok')) {
4370: &Apache::lonxml::debug("Failed to find or replicate $src");
4371:
4372: #if replication failed try to produce eps file dynamically
4373: $src=~s/\.ps$/\.eps/;
4374: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4375: my $newsrc=$orig_src;
4376: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4377: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4378: print FILE ("$newsrc\n");
4379: close(FILE);
4380: }
4381: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4382: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4383: if ($sext ne "") { # Put the ext. back in to uniquify.
4384: $src =~ s/\.eps$/$sext.eps/;
4385: }
4386:
4387: }
4388:
4389: }
4390: } else {
4391: # If the postscript file has spaces in its name,
4392: # LaTeX will gratuitiously vomit. Therefore
4393: # queue such files for copy with " " replaced by "_".
4394: # printout.pm will know them by their .ps or .eps extensions.
4395: my $newsrc = $orig_src;
4396: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4397: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4398: print FILE "$src\n";
4399: close FILE;
4400: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4401: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4402: }
4403: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4404: $path =~ s/ /\_/g;
4405: $file =~ s/ /\_/g;
4406: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4407: return ($path.'/',$file);
4408: }
4409:
4410: sub eps_generation {
4411: my ($src,$file,$width_param) = @_;
4412: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4413: if (open(my $tmpfile,">>$filename")) {
4414: print $tmpfile "$src\n";
4415: close($tmpfile);
4416: }
4417: my $newsrc = $src;
4418: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4419: $newsrc=~s{/home/httpd/html/res}{};
4420: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4421: $newsrc=~s{/\./}{/};
4422: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4423: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4424: $newsrc=~s{/home/httpd/lonUsers}{};
4425: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4426: }
4427: if ($newsrc=~m{/userfiles/}) {
4428: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4429: } else {
4430: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4431: }
4432: }
4433:
4434: sub file_path {
4435: my $src=shift;
4436: my ($file,$path);
4437: if ($src =~ m!(.*)/([^/]*)$!) {
4438: $file = $2;
4439: $path = $1.'/';
4440: }
4441: return $file,$path;
4442: }
4443:
4444:
4445: sub recalc {
4446: my $argument = shift;
4447: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4448: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4449: my $value=$1;
4450: my $units=$2;
4451: if ($units eq 'cm') {
4452: $value*=10;
4453: } elsif ($units eq 'in') {
4454: $value*=25.4;
4455: } elsif ($units eq 'pc') {
4456: $value*=(25.4*12/72.27);
4457: } elsif ($units eq 'pt') {
4458: $value*=(25.4/72.27);
4459: }
4460: return $value.' mm';
4461: }
4462:
4463: sub LATEX_length {
4464: my $garbage=shift;
4465: $garbage=~s/^\s+$//;
4466: $garbage=~s/^\s+(\S.*)/$1/;#space before
4467: $garbage=~s/(.*\S)\s+$/$1/;#space after
4468: $garbage=~s/(\s)+/$1/;#only one space
4469: $garbage=~s/(\\begin\{([^\}]+)}|\\end\{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4470: $garbage=~s/(\$\_\{|\$\_|\$\^\{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4471: $garbage=~s/([^\\])\$/$1/g;#$
4472: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^\{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4473: $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;
4474: $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;
4475: $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;
4476: $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;
4477: $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;
4478: $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;
4479: $garbage=~s/(\\hat\{([^}]+)}|\\check\{([^}]+)}|\\dot\{([^}]+)}|\\breve\{([^}]+)}|\\acute\{([^}]+)}|\\ddot\{([^}]+)}|\\grave\{([^}]+)}|\\tilde\{([^}]+)}|\\mathring\{([^}]+)}|\\bar\{([^}]+)}|\\vec\{([^}]+)})/$1/g;
4480: #remove some other LaTeX command
4481: $garbage=~s|\\(\w+)\\|\\|g;
4482: $garbage=~s|\\(\w+)(\s*)|$2|g;
4483: $garbage=~s|\+|11|g;
4484: my $value=length($garbage);
4485: return $value;
4486: }
4487:
4488:
4489: sub align_latex_image {
4490: my ($align, $latex_rendering, $image, $width, $height) = @_;
4491: my $currentstring; # The 1/2 wrapped image.
4492: my $closure; # The closure of the wrappage.
4493:
4494: # if it's none just return it back
4495: if ($latex_rendering eq 'none') {
4496: return ($image,'');
4497: }
4498:
4499: # If there's an alignment specification we need to honor it here.
4500: # For the horizontal alignments, we will also honor the
4501: # value of the latex specfication. The default is parbox,
4502: # and that's used for illegal values too.
4503: #
4504: # Even though we set a default alignment value, the user
4505: # could have given us an illegal value. In that case we
4506: # just use the default alignment of bottom..
4507: $currentstring = '';
4508: if ($align eq "top") {
4509: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4510: $closure = '}';
4511: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4512: my $offset = $height/2;
4513: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4514: $closure = '}';
4515: } elsif ($align eq "left") {
4516: if ($latex_rendering eq "parpic") {
4517: $currentstring .= '\parpic[l]{'.$image;
4518: $closure = '}';
4519: } elsif ($latex_rendering eq "parbox") {
4520: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4521: .$image;
4522: $closure = '\end{minipage}';
4523: } elsif ($latex_rendering eq "wrapfigure"
4524: || $latex_rendering ne 'none') { # wrapfig render
4525: $currentstring .=
4526: '\begin{wrapfigure}{l}{'.$width.'mm}'
4527: .'\scalebox{1.0}{'.$image;
4528: $closure = '}\end{wrapfigure}';
4529: }
4530: } elsif ($align eq "right") {
4531: if ($latex_rendering eq "parpic") {
4532: $currentstring .= '\parpic[r]{'.$image;
4533: $closure = '}';
4534: } elsif ($latex_rendering eq "parbox") {
4535: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4536: .$image;
4537: $closure = '\end{minipage}';
4538: } elsif ($latex_rendering eq "wrapfigure"
4539: || $latex_rendering ne 'none') { # wrapfig render
4540: $currentstring .=
4541: '\begin{wrapfigure}{r}{'.$width.'mm}'
4542: .'\scalebox{1.0}{'.$image;
4543: $closure = '}\end{wrapfigure}';
4544: }
4545: } else { # Bottom is also default.
4546: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4547: $currentstring .= "{$image";
4548: $closure = '}';
4549: }
4550: return ($currentstring, $closure);
4551: }
4552:
4553:
4554: sub is_inside_of {
4555: my ($tagstack, $tag) = @_;
4556: my @stack = @$tagstack;
4557: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4558: if ($stack[$i] eq $tag) {
4559: return 1;
4560: }
4561: }
4562: return 0;
4563: }
4564:
4565:
4566: #
4567: # This sub provides the typical LaTeX prefix matter for tex output:
4568: #
4569: sub latex_header {
4570: my ($mode) = @_;
4571: my $currentstring = '';
4572:
4573: $currentstring .=
4574: "\n% &Apache::lonxml::londefdef \n" .
4575: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4576: if (($env{'form.latex_type'}=~'batchmode') ||
4577: (!$env{'request.role.adv'}) ||
4578: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4579: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4580: '\renewcommand{\deg}{$^{\circ}$}'.
4581: '\usepackage{multirow}'."\n".
4582: '\usepackage{longtable}'."\n".
4583: '\usepackage{textcomp}'."\n".
4584: '\usepackage{makeidx}'."\n".
4585: '\usepackage[dvips]{graphicx}'."\n".
4586: '\usepackage{wrapfig}'."\n".
4587: '\usepackage{picins}'."\n".
4588: '\usepackage[T1]{fontenc}'."\n".
4589: '\usepackage{lmodern}'."\n".
4590: '\usepackage[postscript]{ucs}'."\n".
4591: '\usepackage[utf8x]{inputenc}'."\n".
4592: '\usepackage{pifont}'."\n".
4593: '\usepackage{latexsym}'."\n".
4594: '\usepackage{epsfig}'."\n".
4595: '\usepackage{xtab}'."\n".
4596: '\usepackage{tabularx}'."\n".
4597: '\usepackage{booktabs}'."\n".
4598: '\usepackage{array}'."\n".
4599: '\usepackage{colortbl}'."\n".
4600: '\usepackage{xcolor}'."\n".
4601: '\usepackage{calc}'."\n".
4602: '\usepackage{amsmath}'."\n".
4603: '\usepackage{soul}'."\n".
4604: '\usepackage{amssymb}'."\n".
4605: '\usepackage{amsfonts}'."\n".
4606: '\usepackage{amsthm}'."\n".
4607: '\usepackage{amscd}'."\n".
4608: '\usepackage{actuarialangle}'."\n";
4609: if($env{'form.pdfFormFields'} eq 'yes') {
4610: $currentstring .= '\usepackage{hyperref}'.
4611: '\usepackage{eforms}'.
4612: '\usepackage{tabularx}';
4613: }
4614:
4615: $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}}'.
4616: '\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}}';
4617: $currentstring .= '\begin{document}';
4618:
4619: return $currentstring;
4620:
4621: }
4622:
4623: sub clean_docs_httpref {
4624: my ($href,$docuri,$cdom,$cnum) = @_;
4625: if ($docuri eq '') {
4626: $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
4627: }
4628: if ($cdom eq '') {
4629: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4630: }
4631: if ($cnum eq '') {
4632: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4633: }
4634: my $cleanhref;
4635: if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/)(.+/)[^/]+$}) {
4636: my $prefix = $1;
4637: my $relpath = $2;
4638: my ($hrefpath,$fname);
4639: if ($href =~ m{^/}) {
4640: if ($href =~ m{^\Q$prefix\E(.+/)([^/]+)$}) {
4641: $hrefpath = $1;
4642: $fname = $2;
4643: } else {
4644: return $cleanhref;
4645: }
4646: } else {
4647: if ($href =~ m{/}) {
4648: (my $path,$fname) = ($href =~ m{^(.*)/([^/]*)$});
4649: $hrefpath = $relpath.$path;
4650: if ($path eq '') {
4651: $hrefpath =~ s{/$}{};
4652: }
4653: } else {
4654: $fname = $href;
4655: $hrefpath = $relpath;
4656: $hrefpath =~ s{/$}{};
4657: }
4658: }
4659: if ($fname ne '') {
4660: my $cleanrelpath;
4661: foreach my $dir (split(/\//,$hrefpath)) {
4662: next if ($dir eq '.');
4663: if ($dir eq '..') {
4664: $cleanrelpath =~ s{([^/]+/)$}{};
4665: } else {
4666: $cleanrelpath .= $dir.'/';
4667: }
4668: }
4669: if ($cleanrelpath ne '') {
4670: $cleanhref = $prefix.$cleanrelpath.$fname;
4671: } else {
4672: $cleanhref = $prefix.$fname;
4673: }
4674: }
4675: }
4676: return $cleanhref;
4677: }
4678:
4679: =pod
4680:
4681: =head1 NAME
4682:
4683: Apache::londefdef.pm
4684:
4685: =head1 SYNOPSIS
4686:
4687: Tags Default Definition Module
4688:
4689: This is part of the LearningOnline Network with CAPA project
4690: described at http://www.lon-capa.org.
4691:
4692:
4693: =head1 NOTABLE SUBROUTINES
4694:
4695: =over
4696:
4697: =item start_hideweboutput()
4698:
4699: =item end_hideweboutput()
4700:
4701: =item image_replication()
4702:
4703: =item resize_image()
4704:
4705: Get correct sizing parameter for an image given
4706: it's initial ht. and wid. This allows sizing of
4707: images that are generated on-the-fly (e.g. gnuplot)
4708: as well as serving as a utility for image_size.
4709:
4710: Parameter:
4711: height_param
4712: width_param - Initial picture dimensions.
4713: scaling - A scale factor.
4714: parstack, - the current stack of tag attributes
4715: from the xml parser
4716: safeeval, - pointer to the safespace
4717: depth, - from what level in the stack to look for attributes
4718: (assumes -1 if unspecified)
4719: cis - look for attrubutes case insensitively
4720: (assumes false)
4721:
4722: Returns:
4723: height, width - new dimensions.
4724:
4725: =item image_size()
4726:
4727: =item image_width()
4728:
4729: =item image_height()
4730:
4731: =item get_eps_image()
4732:
4733: =item eps_generation()
4734:
4735: =item file_path()
4736:
4737: =item recalc()
4738:
4739: Converts a measurement in to mm from any of
4740: the other valid LaTeX units of measure.
4741: If the units of measure are missing from the
4742: parameter, it is assumed to be in and returned
4743: with mm units of measure
4744:
4745: =item LATEX_length()
4746:
4747: =item align_latex_image()
4748:
4749: Wrap image 'stuff' inside of the LaTeX required to implement
4750: alignment:
4751: align_tex_image(align, latex_rendering, image)
4752: Where:
4753: align - The HTML alignment specification.
4754: latex_rendering - rendering hint for latex.
4755: image - The LaTeX needed to insert the image itsef.
4756: width,height - dimensions of the image.
4757: Returns:
4758: The 1/2 wrapped image and the stuff required to close the
4759: wrappage. This allows e.g. randomlabel to insert more stuff
4760: into the closure.
4761:
4762:
4763: =item is_inside_of($tagstack, $tag)
4764: This sub returns true if the current state of Xml processing is inside of the tag.
4765: Parameters:
4766: tagstack - The tagstack from the parser.
4767: tag - The tag (without the <>'s.).
4768: Sample usage:
4769: if (is_inside_of($tagstack "table")) {
4770: I'm in a table....
4771: }
4772:
4773: =item clean_docs_httpref($href,$docuri,$cdom,$cnum)
4774: HTML pages uploaded to a course which contain dependencies either from iframes,
4775: javascript files or objects (FlashPlayerSwf, MediaSrc, XMPSrc, ConfigurationSrc,
4776: and PosterImageSrc) for which dependency is another file uploaded to the same
4777: course.
4778:
4779: Required input:
4780: href - dependency (either a relative URL, or an absolute URL)
4781: Optional inputs:
4782: docuri - URL of HTML page containing the dependency
4783: cdom - Course domain
4784: cnum - CourseID
4785:
4786: Output:
4787: returns an absolute URL constructed from the href provided, and the calling context.
4788: (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
4789: /uploaded/$cdom/$cnum/supplemental/).
4790:
4791: =back
4792:
4793: =cut
4794:
4795:
4796: 1;
4797: __END__
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