1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.456.2.3 2017/01/30 20:14:31 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: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
96: if ($eval eq 'on') {
97: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
98: #&Apache::lonxml::debug("M is evaluated to:$inside:");
99: }
100: my $tex = $inside;
101: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
102: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
103: if ($Apache::lontexconvert::errorstring) {
104: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
105: $tex = &HTML::Entities::encode($tex,'<>&"');
106: my ($linenumber) =
107: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
108: if (defined($linenumber)) {
109: my @tex=split("\n",$tex);
110: $tex[$linenumber]='<b><font color="red">'.
111: $tex[$linenumber].'</font></b>';
112: $tex=join("\n",@tex);
113: }
114: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
115: $Apache::lontexconvert::errorstring='';
116: }
117: #&Apache::lonxml::debug("M is ends with:$currentstring:");
118: $Apache::lonxml::post_evaluate=0;
119: } elsif ($target eq 'tex') {
120:
121: $currentstring = $inside;
122: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
123: if ($eval eq 'on') {
124: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
125: }
126: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
127: # detect simple math mode entry exits, and convert them
128: # to use \ensuremath ... unless there's a \verb inside.
129: if (! ($currentstring=~/\\verb/)) {
130: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
131: $currentstring=~s/^(\s*)\$/$1/;
132: $currentstring=~s/\$(\s*)$/$1/;
133: $currentstring='\ensuremath{'.$currentstring.'}';
134: }
135: }
136: $Apache::lonxml::post_evaluate=0;
137: }
138: return $currentstring;
139: }
140:
141: sub end_m {
142: my ($target,$token) = @_;
143: my $currentstring = '';
144: if ($target eq 'tex') {
145: $currentstring = "";
146: }
147: return $currentstring;
148: }
149:
150: sub start_tthoption {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
152: my $result;
153: if ($target eq 'web' || $target eq 'webgrade') {
154: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
155: $style);
156: $inside=~s/^\s*//;
157: if ($env{'browser.mathml'}) {
158: &tth::ttmoptions($inside);
159: } else {
160: &tth::tthoptions($inside);
161: }
162: }
163: return $result;
164: }
165:
166: sub end_tthoption {
167: my ($target,$token) = @_;
168: my $result;
169: return $result;
170: }
171:
172: #-- <html> tag (end tag optional)
173: sub start_html {
174: my ($target,$token) = @_;
175: my $currentstring = '';
176: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
177: # start_body() takes care of emitting the <html>
178: } elsif ($target eq 'tex') {
179:
180: $currentstring .= &latex_header();
181: }
182: return $currentstring;
183: }
184:
185: sub end_html {
186: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
187: my $currentstring = '';
188: if ($target eq 'web' || $target eq 'webgrade') {
189: # end_body takes care of the </html>
190: }
191: return $currentstring;
192: }
193:
194: #-- <head> tag (end tag optional)
195: sub start_head {
196: my ($target,$token) = @_;
197: my $currentstring = '';
198: if ($target eq 'web' || $target eq 'webgrade') {
199: &Apache::lonxml::startredirection();
200: }
201: return $currentstring;
202: }
203:
204: sub end_head {
205: my ($target,$token) = @_;
206: my $currentstring = '';
207: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
208: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
209: # in case there is a </head> but no <head>
210: if ($Apache::lonxml::redirection) {
211: $Apache::londefdef::head = &Apache::lonxml::endredirection();
212: }
213: }
214: return $currentstring;
215: }
216:
217: #-- <map> tag (end tag required)
218: sub start_map {
219: my ($target,$token) = @_;
220: my $currentstring = '';
221: if ($target eq 'web' || $target eq 'webgrade') {
222: $currentstring = $token->[4];
223: }
224: return $currentstring;
225: }
226:
227: sub end_map {
228: my ($target,$token) = @_;
229: my $currentstring = '';
230: if ($target eq 'web' || $target eq 'webgrade') {
231: $currentstring = $token->[2];
232: }
233: return $currentstring;
234: }
235:
236: #-- <select> tag (end tag required)
237: sub start_select {
238: my ($target,$token) = @_;
239: my $currentstring = '';
240: if ($target eq 'web' || $target eq 'webgrade') {
241: $currentstring = $token->[4];
242: } elsif ($target eq 'tex') {
243: $Apache::londefdef::select=0;
244: }
245: return $currentstring;
246: }
247:
248: sub end_select {
249: my ($target,$token) = @_;
250: my $currentstring = '';
251: if ($target eq 'web' || $target eq 'webgrade') {
252: $currentstring = $token->[2];
253: }
254: return $currentstring;
255: }
256:
257: #-- <option> tag (end tag optional)
258: sub start_option {
259: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
260: my $currentstring = '';
261: if ($target eq 'web' || $target eq 'webgrade') {
262: $currentstring = $token->[4];
263: } elsif ($target eq 'tex') {
264: $Apache::londefdef::select++;
265: if ($Apache::londefdef::select == 1) {
266: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
267: } else {
268: $currentstring='\keephidden{';
269: }
270: }
271: return $currentstring;
272: }
273:
274: sub end_option {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: } elsif ($target eq 'tex') {
280: $currentstring='}';
281: }
282: return $currentstring;
283: }
284:
285: #-- <input> tag (end tag forbidden)
286: sub start_input {
287: my ($target,$token) = @_;
288: my $currentstring = '';
289: if ($target eq 'web' || $target eq 'webgrade') {
290: $currentstring = $token->[4];
291: }
292: return $currentstring;
293: }
294:
295: sub end_input {
296: my ($target,$token) = @_;
297: my $currentstring = '';
298: if ($target eq 'web' || $target eq 'webgrade') {
299: $currentstring = $token->[2];
300: }
301: return $currentstring;
302: }
303:
304: #-- <textarea> tag (end tag required)
305: sub start_textarea {
306: my ($target,$token) = @_;
307: my $currentstring = '';
308: if ($target eq 'web' || $target eq 'webgrade') {
309: $currentstring = $token->[4];
310: }
311: return $currentstring;
312: }
313:
314: sub end_textarea {
315: my ($target,$token) = @_;
316: my $currentstring = '';
317: if ($target eq 'web' || $target eq 'webgrade') {
318: $currentstring = $token->[2];
319: }
320: return $currentstring;
321: }
322:
323: #-- <form> tag (end tag required)
324: sub start_form {
325: my ($target,$token) = @_;
326: my $currentstring = '';
327: if ($target eq 'web' || $target eq 'webgrade') {
328: $currentstring = $token->[4];
329: }
330: return $currentstring;
331: }
332:
333: sub end_form {
334: my ($target,$token) = @_;
335: my $currentstring = '';
336: if ($target eq 'web' || $target eq 'webgrade') {
337: $currentstring = $token->[2];
338: }
339: return $currentstring;
340: }
341:
342: #-- <title> tag (end tag required)
343: sub start_title {
344: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
345: my $currentstring = '';
346: if ($target eq 'web' || $target eq 'webgrade') {
347: $Apache::londefdef::title =
348: &Apache::lonxml::get_all_text('/title',$parser,$style);
349: } elsif ($target eq 'tex') {
350: $currentstring .= '\keephidden{Title of the document: '
351: }
352: if ($target eq 'meta') {
353: $currentstring='<title>';
354: &start_output($target);
355: }
356: return $currentstring;
357: }
358:
359: sub end_title {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: # start_title takes care of swallowing the title
364: } elsif ($target eq 'tex') {
365: $currentstring .= '}';
366: }
367: if ($target eq 'meta') {
368: &end_output($target);
369: $currentstring='</title>';
370: }
371: return $currentstring;
372: }
373:
374: #-- <meta> tag (end tag forbidden)
375: sub start_meta {
376: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
377: my $currentstring = '';
378: if ($target eq 'web' || $target eq 'webgrade') {
379: my $args='';
380: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
381: if ($args eq '') {
382: &Apache::lonxml::get_all_text("/meta",$parser,$style);
383: } else {
384: $currentstring = $token->[4];
385: }
386: if ($env{'form.grade_imsexport'}) {
387: $currentstring = '';
388: }
389: } elsif ($target eq 'meta') {
390: unless (&Apache::lonxml::get_param
391: ('http-equiv',$parstack,$safeeval,undef,1)) {
392: my $name=$token->[2]->{'name'};
393: $name=~tr/A-Z/a-z/;
394: $name=~s/\s/\_/gs;
395: $name=~s/\W//gs;
396: if ($name) {
397: $currentstring='<'.$name;
398: my $display=&Apache::lonxml::get_param
399: ('display',$parstack,$safeeval,undef,1);
400: if ($display) {
401: $display=~s/\"/\'/g;
402: $currentstring.=' display="'.$display.'"';
403: }
404: $currentstring.='>'.
405: &Apache::lonxml::get_param
406: ('content',$parstack,$safeeval,undef,1).
407: '</'.$name.'>';
408: }
409: my $display=&Apache::lonxml::get_param
410: ('display',$parstack,$safeeval,undef,1);
411: if ($display) {
412: $display=&HTML::Entities::encode($display,'<>&"');
413: $currentstring.='<'.$name.'.display>'.$display.
414: '</'.$name.'.display>';
415: }
416: }
417: } elsif ($target eq 'tex') {
418: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
419: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
420: if ((not defined $content) && (not defined $name)) {
421: &Apache::lonxml::startredirection();
422: }
423: } elsif ($target eq 'edit') {
424: $currentstring .= &Apache::edit::tag_start($target,$token);
425: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
426: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
427: $currentstring .= &Apache::edit::end_row();
428: } elsif ($target eq 'modified') {
429: my $constructtag =
430: &Apache::edit::get_new_args($token,$parstack,$safeeval,
431: 'name','content');
432: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
433: }
434: return $currentstring;
435: }
436:
437: sub end_meta {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
439: my $currentstring = '';
440: if ($target eq 'web' || $target eq 'webgrade') {
441: my $args='';
442: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
443: if ($args ne '') {
444: $currentstring = $token->[4];
445: }
446: } elsif ($target eq 'tex') {
447: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
448: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
449: if ((not defined $content) && (not defined $name)) {
450: &Apache::lonxml::endredirection();
451: }
452: }
453: return $currentstring;
454: }
455:
456: sub insert_meta {
457: return '
458: <meta />';
459: }
460:
461: #-- <start> tag
462: sub start_style {
463: my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
464: my $currentstring = '';
465:
466: if ($target eq 'tex') {
467: Apache::lonxml::startredirection();
468: } else {
469: $currentstring = $token->[4];
470: }
471:
472: return $currentstring;
473: }
474:
475: sub end_style {
476: my ($target, $token, $tagstack, $parstack, $parser, $safeeval) = @_;
477: my $currentstring = '';
478:
479: if ($target eq 'tex') {
480: Apache::lonxml::endredirection();
481: } else {
482: $currentstring = $token->[2];
483: }
484: return $currentstring;
485: }
486:
487: # accessrule
488: sub start_accessrule {
489: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
490: my $currentstring = '';
491: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
492: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
493: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
494: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
495:
496: my ($dom,$crs,$sec,$separator);
497: if ($type eq 'user') {
498: ($dom,$crs,$sec)=split(m{/},$realm);
499: $crs = &LONCAPA::clean_username($crs);
500: $separator = '/';
501: } else {
502: ($dom,$crs,$sec)=split(/\_/,$realm);
503: $crs = &LONCAPA::clean_courseid($crs);
504: $separator = '_';
505: }
506: $dom = &LONCAPA::clean_domain($dom);
507:
508: $sec =~s/\W//;
509: $realm = $dom;
510: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
511: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
512: $role=~s/\W//g;
513:
514: if ($target eq 'web') {
515: my $args='';
516: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
517: if ($args eq '') {
518: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
519: } else {
520: $currentstring = $token->[4];
521: }
522: }
523: if ($target eq 'meta') {
524: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
525: }
526: return $currentstring;
527: }
528:
529: sub end_accessrule {
530: my ($target,$token,$tagstack,$parstack,$parser) = @_;
531: my $currentstring = '';
532: if ($target eq 'web') {
533: my $args='';
534: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
535: if ($args ne '') {
536: $currentstring = $token->[4];
537: }
538: }
539: return $currentstring;
540: }
541:
542: sub generate_css_links {
543: my $links;
544: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
545: if ($css_href =~ /\S/) {
546: &Apache::lonxml::extlink($css_href);
547: $links .=
548: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
549: }
550: return $links;
551: }
552:
553: #-- <body> tag (end tag required)
554: sub start_body {
555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
556: my $currentstring = '';
557:
558: if ($target eq 'web' || $target eq 'webgrade') {
559: if ($Apache::lonhomework::parsing_a_problem) {
560: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
561: return '';
562: }
563:
564: if (&is_inside_of($tagstack, "head")) {
565: &end_head(@_);
566: }
567:
568: my $extra_head = &generate_css_links();
569:
570: # Breadcrumbs
571: &Apache::lonhtmlcommon::clear_breadcrumbs();
572: if ($env{'request.state'} eq 'construct') {
573: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
574: &Apache::lonhtmlcommon::add_breadcrumb({
575: 'text' => 'Authoring Space',
576: 'href' => &Apache::loncommon::authorspace($url),
577: });
578: &Apache::lonhtmlcommon::add_breadcrumb({
579: 'text' => 'HTML Editor',
580: 'href' => '',
581: });
582: # breadcrumbs (and tools) will be created
583: # in start_page->bodytag->innerregister
584: } else {
585: # FIXME Where are we?
586: }
587:
588: my $args = {'add_entries' => $token->[2],
589: 'force_register' => 1,};
590: if ($target eq 'web') {
591: $args->{'print_suppress'} = 1;
592: if ($env{'request.use_absolute'}) {
593: $args->{'use_absolute'} = $env{'request.use_absolute'};
594: }
595: }
596: $currentstring =
597: &Apache::loncommon::start_page($Apache::londefdef::title,
598: $Apache::londefdef::head
599: .$extra_head,$args);
600: my $header = '';
601: if ($env{'request.state'} ne 'published' &&
602: $env{'request.state'} ne 'construct') {
603: $header=&Apache::lonmenu::constspaceform();
604: }
605: if ($env{'request.state'} ne 'published') {
606: unless ($env{'form.inhibitmenu'} eq 'yes') {
607: $header.=&edit_controls();
608: }
609: }
610: if ($env{'request.state'} eq 'construct') {
611: unless ($env{'form.inhibitmenu'} eq 'yes') {
612: $currentstring.=&Apache::loncommon::head_subbox(
613: &Apache::loncommon::CSTR_pageheader()
614: .$header);
615: }
616: } elsif ($env{'request.state'} eq 'edit') {
617: $currentstring.=&Apache::loncommon::head_subbox($header);
618: }
619: $currentstring.=&Apache::lonxml::message_location();
620: } elsif ($target eq 'tex') {
621: $currentstring = ''; # '\begin{document}' is in header.
622: }
623:
624: return $currentstring;
625: }
626:
627: sub edit_controls {
628: my ($nochgview) = @_;
629: my $result .= '
630: <form method="post" action="">
631: <div class="LC_edit_problem_header">';
632: unless ($nochgview) {
633: $result .= '
634: <div class="LC_edit_problem_header_row1">'.
635: &Apache::lonxml::renderingoptions().'
636: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
637: </div>';
638: }
639: $result .= '
640: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
641: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
642: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
643: if ($url =~ /\.html?$/i) {
644: my ($cdom,$cnum);
645: if ($env{'request.course.id'}) {
646: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
647: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
648: if ($env{'request.filename'} =~ m{/userfiles/supplemental/default|\d+/}) {
649: if (&Apache::lonnet::is_course_upload($env{'request.filename'},
650: $cnum,$cdom)) {
651: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
652: ['folderpath','title']);
653: }
654: }
655: }
656: my ($symb,$itemtitle,$displayfile,$caller);
657: if ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/}) {
658: $itemtitle = &mt('Syllabus');
659: $caller = "/public/$cdom/$cnum/syllabus";
660: } else {
661: $caller = $url;
662: ($symb,$itemtitle,$displayfile) =
663: &Apache::lonxml::get_courseupload_hierarchy($url,
664: $env{'form.folderpath'},
665: $env{'form.title'});
666: }
667: if (($symb ne '') || ($env{'httpref.'.$url} ne '') ||
668: ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/})) {
669: $result .= (' ' x 3).
670: &Apache::lonhtmlcommon::dependencies_button()."\n".
671: &Apache::lonhtmlcommon::dependencycheck_js($symb,
672: $itemtitle,$url,$env{'form.folderpath'},$caller)."\n";
673: }
674: }
675: }
676: $result .= '</div>
677: </div>
678: </form>
679: ';
680: return $result;
681: }
682:
683: sub end_body {
684: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
685: my $currentstring = &end_p(); # Close off unclosed <p>
686: if ($target eq 'web' || $target eq 'webgrade') {
687: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
688: } elsif ($target eq 'tex') {
689: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
690: }
691: return $currentstring;
692: }
693:
694: # \begin{center} causes a new paragprah spacing that looks odd inside
695: # of a table cell. Same at the end of a \center but with a slightly
696: # larger space .. hence center_correction and center_end_correction.
697: #
698: sub center_correction { return '\vspace*{-6 mm}'; }
699: sub center_end_correction { return '\vspace*{-7 mm}'; }
700:
701: #-- <center> tag (end tag required)
702: sub start_center {
703: my ($target,$token,$tagstack) = @_;
704: my $currentstring = &end_p(); # Close off any prior para.
705: if ($target eq 'web' || $target eq 'webgrade') {
706: $currentstring .= $token->[4];
707: } elsif ($target eq 'tex') {
708: if (&is_inside_of($tagstack, "table")) {
709: $currentstring .= ¢er_correction();
710: }
711: $currentstring .= '\begin{center}';
712: }
713: return $currentstring;
714: }
715:
716: sub end_center {
717: my ($target,$token,$tagstack) = @_;
718: my $currentstring = '';
719: if ($target eq 'web' || $target eq 'webgrade') {
720: $currentstring = $token->[2];
721: } elsif ($target eq 'tex') {
722: $currentstring = '\end{center}';
723: if (&is_inside_of($tagstack, "table")) {
724: $currentstring .= ¢er_end_correction();
725: }
726: }
727: return $currentstring;
728: }
729:
730: #-- <b> tag (end tag required)
731: # NOTE: In TeX mode disables internal <p>
732: sub start_b {
733: my ($target,$token) = @_;
734: my $currentstring = '';
735: if ($target eq 'web' || $target eq 'webgrade') {
736: $currentstring = $token->[4];
737: } elsif ($target eq 'tex') {
738: &disable_para();
739: $currentstring .= '\textbf{';
740: }
741: return $currentstring;
742: }
743:
744: sub end_b {
745: my ($target,$token) = @_;
746: my $currentstring = '';
747: if ($target eq 'web' || $target eq 'webgrade') {
748: $currentstring = $token->[2];
749: } elsif ($target eq 'tex') {
750: &enable_para();
751: $currentstring = '}';
752: }
753: return $currentstring;
754: }
755:
756: #-- <strong> tag (end tag required)
757: # NOTE: in TeX mode disables internal <p>
758: sub start_strong {
759: my ($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 $currentstring;
768: }
769:
770: sub end_strong {
771: my ($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 $currentstring;
780: }
781:
782: #-- <h1> tag (end tag required)
783: sub start_h1 {
784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
785: my $currentstring = &end_p(); # Close off any prior para.
786: if ($target eq 'web' || $target eq 'webgrade') {
787: $currentstring .= $token->[4];
788: } elsif ($target eq 'tex') {
789: my $pre;
790: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
791: if ($align eq 'center') {
792: $pre='\begin{center}';
793: } elsif ($align eq 'left') {
794: $pre='\rlap{';
795: } elsif ($align eq 'right') {
796: $pre=' \hfill \llap{';
797: }
798: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
799: if (not defined $TeXsize) {$TeXsize="large";}
800: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
801: } elsif ($target eq 'meta') {
802: $currentstring.='<subject>';
803: &start_output($target);
804: }
805: return $currentstring;
806: }
807:
808: sub end_h1 {
809: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
810: my $currentstring = '';
811: if ($target eq 'web' || $target eq 'webgrade') {
812: $currentstring .= $token->[2];
813: } elsif ($target eq 'tex') {
814: my $post='\vskip 0 mm ';
815: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
816: if ($align eq 'center') {
817: $post='\end{center}';
818: } elsif ($align eq 'left') {
819: $post='} \hfill'.'\vskip 0 mm ';
820: } elsif ($align eq 'right') {
821: $post='}'.'\vskip 0 mm ';
822: }
823: $currentstring .= '}}'.$post;
824: } elsif ($target eq 'meta') {
825: &end_output($target);
826: $currentstring='</subject>';
827: }
828: return $currentstring;
829: }
830:
831: #-- <h2> tag
832: sub start_h2 {
833: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
834: my $currentstring = &end_p(); # Close off any prior para.
835: if ($target eq 'web' || $target eq 'webgrade') {
836: $currentstring .= $token->[4];
837: } elsif ($target eq 'tex') {
838: my $pre;
839: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
840: if ($align eq 'center') {
841: $pre='\begin{center}';
842: } elsif ($align eq 'left') {
843: $pre='\rlap{';
844: } elsif ($align eq 'right') {
845: $pre=' \hfill \llap{';
846: }
847: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
848: if (not defined $TeXsize) {$TeXsize="large";}
849: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
850: }
851: return $currentstring;
852: }
853:
854: sub end_h2 {
855: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
856: my $currentstring = '';
857: if ($target eq 'web' || $target eq 'webgrade') {
858: $currentstring .= $token->[2];
859: } elsif ($target eq 'tex') {
860: my $post='\vskip 0 mm ';
861: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
862: if ($align eq 'center') {
863: $post='\end{center}';
864: } elsif ($align eq 'left') {
865: $post='} \hfill'.'\vskip 0 mm ';
866: } elsif ($align eq 'right') {
867: $post='}'.'\vskip 0 mm ';
868: }
869: $currentstring .= '}}'.$post;
870: }
871: return $currentstring;
872: }
873:
874: #-- <h3> tag
875: sub start_h3 {
876: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
877: my $currentstring = &end_p(); # Close off any prior para.
878: if ($target eq 'web' || $target eq 'webgrade') {
879: $currentstring .= $token->[4];
880: } elsif ($target eq 'tex') {
881: my $pre;
882: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
883: if ($align eq 'center') {
884: $pre='\begin{center}';
885: } elsif ($align eq 'left') {
886: $pre='\rlap{';
887: } elsif ($align eq 'right') {
888: $pre=' \hfill \llap{';
889: }
890: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
891: if (not defined $TeXsize) {$TeXsize="large";}
892: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
893: }
894: return $currentstring;
895: }
896:
897: sub end_h3 {
898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
899: my $currentstring = '';
900: if ($target eq 'web' || $target eq 'webgrade') {
901: $currentstring .= $token->[2];
902: } elsif ($target eq 'tex') {
903: my $post='\vskip 0 mm ';
904: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
905: if ($align eq 'center') {
906: $post='\end{center}';
907: } elsif ($align eq 'left') {
908: $post='} \hfill'.'\vskip 0 mm ';
909: } elsif ($align eq 'right') {
910: $post='}'.'\vskip 0 mm ';
911: }
912: $currentstring .= '}}'.$post;
913: }
914: return $currentstring;
915: }
916:
917: #-- <h4> tag
918: sub start_h4 {
919: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
920: my $currentstring = &end_p(); # Close off any prior para.
921: if ($target eq 'web' || $target eq 'webgrade') {
922: $currentstring .= $token->[4];
923: } elsif ($target eq 'tex') {
924: my $pre;
925: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
926: if ($align eq 'center') {
927: $pre='\begin{center}';
928: } elsif ($align eq 'left') {
929: $pre='\rlap{';
930: } elsif ($align eq 'right') {
931: $pre=' \hfill \llap{';
932: }
933: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
934: if (not defined $TeXsize) {$TeXsize="large";}
935: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
936: }
937: return $currentstring;
938: }
939:
940: sub end_h4 {
941: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
942: my $currentstring = '';
943: if ($target eq 'web' || $target eq 'webgrade') {
944: $currentstring .= $token->[2];
945: } elsif ($target eq 'tex') {
946: my $post='\vskip 0 mm ';
947: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
948: if ($align eq 'center') {
949: $post='\end{center}';
950: } elsif ($align eq 'left') {
951: $post='} \hfill'.'\vskip 0 mm ';
952: } elsif ($align eq 'right') {
953: $post='}'.'\vskip 0 mm ';
954: }
955: $currentstring .= '}}'.$post;
956: }
957: return $currentstring;
958: }
959:
960: #-- <h5> tag
961: sub start_h5 {
962: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
963: my $currentstring = &end_p(); # Close off any prior paras.
964: if ($target eq 'web' || $target eq 'webgrade') {
965: $currentstring .= $token->[4];
966: } elsif ($target eq 'tex') {
967: my $pre;
968: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
969: if ($align eq 'center') {
970: $pre='\begin{center}';
971: } elsif ($align eq 'left') {
972: $pre='\rlap{';
973: } elsif ($align eq 'right') {
974: $pre=' \hfill \llap{';
975: }
976: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
977: if (not defined $TeXsize) {$TeXsize="large";}
978: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
979: }
980: return $currentstring;
981: }
982:
983: sub end_h5 {
984: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
985: my $currentstring = '';
986: if ($target eq 'web' || $target eq 'webgrade') {
987: $currentstring .= $token->[2];
988: } elsif ($target eq 'tex') {
989: my $post='\vskip 0 mm ';
990: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
991: if ($align eq 'center') {
992: $post='\end{center}';
993: } elsif ($align eq 'left') {
994: $post='} \hfill'.'\vskip 0 mm ';
995: } elsif ($align eq 'right') {
996: $post='}'.'\vskip 0 mm ';
997: }
998: $currentstring .= '}}'.$post;
999: }
1000: return $currentstring;
1001: }
1002:
1003: #-- <h6> tag
1004: sub start_h6 {
1005: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1006: my $currentstring = &end_p(); # Close off any prior paras.
1007: if ($target eq 'web' || $target eq 'webgrade') {
1008: $currentstring .= $token->[4];
1009: } elsif ($target eq 'tex') {
1010: my $pre;
1011: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1012: if ($align eq 'center') {
1013: $pre='\begin{center}';
1014: } elsif ($align eq 'left') {
1015: $pre='\rlap{';
1016: } elsif ($align eq 'right') {
1017: $pre=' \hfill \llap{';
1018: }
1019: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1020: if (not defined $TeXsize) {$TeXsize="large";}
1021: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1022: }
1023: return $currentstring;
1024: }
1025:
1026: sub end_h6 {
1027: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1028: my $currentstring = '';
1029: if ($target eq 'web' || $target eq 'webgrade') {
1030: $currentstring .= $token->[2];
1031: } elsif ($target eq 'tex') {
1032: my $post='\vskip 0 mm ';
1033: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1034: if ($align eq 'center') {
1035: $post='\end{center}';
1036: } elsif ($align eq 'left') {
1037: $post='} \hfill'.'\vskip 0 mm ';
1038: } elsif ($align eq 'right') {
1039: $post='}'.'\vskip 0 mm ';
1040: }
1041: $currentstring .= '}}'.$post;
1042: }
1043: return $currentstring;
1044: }
1045:
1046: #--- <cite> tag (end tag required)
1047: sub start_cite {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web' || $target eq 'webgrade') {
1051: $currentstring .= $token->[4];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '\textit{';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: sub end_cite {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[2];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '}';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: #-- <i> tag (end tag required)
1070: sub start_i {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web' || $target eq 'webgrade') {
1074: $currentstring .= $token->[4];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '\textit{';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: sub end_i {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[2];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '}';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: #-- <address> tag (end tag required)
1093: sub start_address {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web' || $target eq 'webgrade') {
1097: $currentstring .= $token->[4];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '\textit{';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: sub end_address {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[2];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '}';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: #-- <dfn> tag (end tag required)
1116: sub start_dfn {
1117: my ($target,$token) = @_;
1118: my $currentstring = '';
1119: if ($target eq 'web' || $target eq 'webgrade') {
1120: $currentstring .= $token->[4];
1121: } elsif ($target eq 'tex') {
1122: $currentstring .= '\textit{';
1123: }
1124: return $currentstring;
1125: }
1126:
1127: sub end_dfn {
1128: my ($target,$token) = @_;
1129: my $currentstring = '';
1130: if ($target eq 'web' || $target eq 'webgrade') {
1131: $currentstring .= $token->[2];
1132: } elsif ($target eq 'tex') {
1133: $currentstring .= '}';
1134: }
1135: return $currentstring;
1136: }
1137:
1138: #-- <tt> tag (end tag required)
1139: sub start_tt {
1140: my ($target,$token) = @_;
1141: my $currentstring = '';
1142: if ($target eq 'web' || $target eq 'webgrade') {
1143: $currentstring .= $token->[4];
1144: } elsif ($target eq 'tex') {
1145: $currentstring .= '\texttt{';
1146: }
1147: return $currentstring;
1148: }
1149:
1150: sub end_tt {
1151: my ($target,$token) = @_;
1152: my $currentstring = '';
1153: if ($target eq 'web' || $target eq 'webgrade') {
1154: $currentstring .= $token->[2];
1155: } elsif ($target eq 'tex') {
1156: $currentstring .= '}';
1157: }
1158: return $currentstring;
1159: }
1160:
1161: #-- <kbd> tag (end tag required)
1162: sub start_kbd {
1163: my ($target,$token) = @_;
1164: my $currentstring = '';
1165: if ($target eq 'web' || $target eq 'webgrade') {
1166: $currentstring .= $token->[4];
1167: } elsif ($target eq 'tex') {
1168: $currentstring .= '\texttt{';
1169: }
1170: return $currentstring;
1171: }
1172:
1173: sub end_kbd {
1174: my ($target,$token) = @_;
1175: my $currentstring = '';
1176: if ($target eq 'web' || $target eq 'webgrade') {
1177: $currentstring .= $token->[2];
1178: } elsif ($target eq 'tex') {
1179: $currentstring .= '}';
1180: }
1181: return $currentstring;
1182: }
1183:
1184: #-- <code> tag (end tag required)
1185: sub start_code {
1186: my ($target,$token) = @_;
1187: my $currentstring = '';
1188: if ($target eq 'web' || $target eq 'webgrade') {
1189: $currentstring .= $token->[4];
1190: } elsif ($target eq 'tex') {
1191: $currentstring .= '\texttt{';
1192: }
1193: return $currentstring;
1194: }
1195:
1196: sub end_code {
1197: my ($target,$token) = @_;
1198: my $currentstring = '';
1199: if ($target eq 'web' || $target eq 'webgrade') {
1200: $currentstring .= $token->[2];
1201: } elsif ($target eq 'tex') {
1202: $currentstring .= '}';
1203: }
1204: return $currentstring;
1205: }
1206:
1207: #-- <em> tag (end tag required)
1208: sub start_em {
1209: my ($target,$token) = @_;
1210: my $currentstring = '';
1211: if ($target eq 'web' || $target eq 'webgrade') {
1212: $currentstring .= $token->[4];
1213: } elsif ($target eq 'tex') {
1214: $currentstring .= '\emph{';
1215: }
1216: return $currentstring;
1217: }
1218:
1219: sub end_em {
1220: my ($target,$token) = @_;
1221: my $currentstring = '';
1222: if ($target eq 'web' || $target eq 'webgrade') {
1223: $currentstring .= $token->[2];
1224: } elsif ($target eq 'tex') {
1225: $currentstring .= '}';
1226: }
1227: return $currentstring;
1228: }
1229:
1230: #-- <q> tag (end tag required)
1231: sub start_q {
1232: my ($target,$token) = @_;
1233: my $currentstring = '';
1234: if ($target eq 'web' || $target eq 'webgrade') {
1235: $currentstring .= $token->[4];
1236: } elsif ($target eq 'tex') {
1237: $currentstring .= '\emph{';
1238: }
1239: return $currentstring;
1240: }
1241:
1242: sub end_q {
1243: my ($target,$token) = @_;
1244: my $currentstring = '';
1245: if ($target eq 'web' || $target eq 'webgrade') {
1246: $currentstring .= $token->[2];
1247: } elsif ($target eq 'tex') {
1248: $currentstring .= '}';
1249: }
1250: return $currentstring;
1251: }
1252:
1253: # <p> is a bit strange since it does not require a closing </p>
1254: # However in latex, we must often output closing stuff to end
1255: # environments and {}'s etc. Therefore we do all the work
1256: # of figuring out the ending strings in the start tag processing,
1257: # and provide a mechanism to output the stop text external
1258: # to tag processing.
1259: #
1260: {
1261:
1262: my $closing_string = ''; # String required to close <p>
1263:
1264: # Some tags are <p> fragile meaning that <p> inside of them
1265: # does not work within TeX mode. This is managed via the
1266: # counter below:
1267: #
1268:
1269: my $para_disabled = 0;
1270:
1271: sub disable_para {
1272: $para_disabled++;
1273: }
1274: sub enable_para {
1275: $para_disabled--;
1276: }
1277:
1278:
1279: #-- <p> tag (end tag optional)
1280: #optional attribute - align="center|left|right"
1281: sub start_p {
1282: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1283: my $currentstring = '';
1284: if ($target eq 'web' || $target eq 'webgrade') {
1285: $currentstring .= &end_p(); # close off prior para if in progress.
1286: $currentstring .= $token->[4];
1287: if (! ($currentstring =~ /\//)) {
1288: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1289: }
1290: } elsif ($target eq 'tex' && !$para_disabled) {
1291:
1292: $currentstring .= &end_p(); # close off prior para if in progress.
1293: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1294: if ($align eq 'center') {
1295: $currentstring .='\begin{center}\par ';
1296: $closing_string = '\end{center}';
1297: if (&is_inside_of($tagstack, "table")) {
1298: $currentstring = ¢er_correction().$currentstring;
1299: }
1300: } elsif ($align eq 'right') {
1301: $currentstring.="\n".'{\flushright ';
1302: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1303: $closing_string= "}\n";
1304: } elsif ($align eq 'left') {
1305: $currentstring.= "\n".'{\flushleft ';
1306: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1307: $closing_string = "}\n";
1308: } else {
1309: $currentstring.='\par ';
1310: if (&is_inside_of($tagstack, 'table')) {
1311: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1312: } else {
1313: $closing_string = '\strut\\\\\strut ';
1314: }
1315: }
1316:
1317: }
1318: return $currentstring;
1319: }
1320: #
1321: # End paragraph processing just requires that we output the
1322: # closing string that was saved and blank it.
1323: sub end_p {
1324: # Note only 'tex' mode uses disable_para and enable_para
1325: # so we don't need to know the target in the check below:
1326:
1327: if (!$para_disabled) {
1328: my $current_string = $closing_string;
1329: $closing_string = ''; # Not in a para anymore.
1330: return $current_string;
1331: } else {
1332: return '';
1333: }
1334:
1335: }
1336: }
1337: #-- <br> tag (end tag forbidden)
1338: sub start_br {
1339: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1340: my $currentstring = '';
1341: if ($target eq 'web' || $target eq 'webgrade') {
1342: $currentstring .= $token->[4];
1343: } elsif ($target eq 'tex') {
1344: my @tempo=@$tagstack;
1345: my $signal=0;
1346: # Not going to factor this to is_inside_of since that would require
1347: # multiple stack traversals.
1348: #
1349: for (my $i=$#tempo;$i>=0;$i--) {
1350: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1351: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1352: $signal=1;
1353: }
1354: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1355: $signal = 1;
1356: }
1357: }
1358: if ($signal != 1) {
1359: $currentstring .= '\strut \\\\ \strut ';
1360: }
1361:
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_br {
1367: my ($target,$token) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring .= $token->[2];
1371: }
1372: return $currentstring;
1373: }
1374:
1375: #-- <big> tag (end tag required)
1376: sub start_big {
1377: my ($target,$token) = @_;
1378: my $currentstring = '';
1379: if ($target eq 'web' || $target eq 'webgrade') {
1380: $currentstring .= $token->[4];
1381: } elsif ($target eq 'tex') {
1382: $currentstring .= '{\large ';
1383: }
1384: return $currentstring;
1385: }
1386:
1387: sub end_big {
1388: my ($target,$token) = @_;
1389: my $currentstring = '';
1390: if ($target eq 'web' || $target eq 'webgrade') {
1391: $currentstring .= $token->[2];
1392: } elsif ($target eq 'tex') {
1393: $currentstring .= '}';
1394: }
1395: return $currentstring;
1396: }
1397:
1398: #-- <small> tag (end tag required)
1399: sub start_small {
1400: my ($target,$token) = @_;
1401: my $currentstring = '';
1402: if ($target eq 'web' || $target eq 'webgrade') {
1403: $currentstring .= $token->[4];
1404: } elsif ($target eq 'tex') {
1405: $currentstring .= '{\footnotesize ';
1406: }
1407: return $currentstring;
1408: }
1409:
1410: sub end_small {
1411: my ($target,$token) = @_;
1412: my $currentstring = '';
1413: if ($target eq 'web' || $target eq 'webgrade') {
1414: $currentstring .= $token->[2];
1415: } elsif ($target eq 'tex') {
1416: $currentstring .= '}';
1417: }
1418: return $currentstring;
1419: }
1420:
1421: #-- <basefont> tag (end tag forbidden)
1422: sub start_basefont {
1423: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1424: my $currentstring = '';
1425: if ($target eq 'web' || $target eq 'webgrade') {
1426: $currentstring = $token->[4];
1427: } elsif ($target eq 'tex') {
1428: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1429: if (defined $basesize) {
1430: $currentstring = '{\\'.$basesize.' ';
1431: }
1432: }
1433: return $currentstring;
1434: }
1435:
1436: sub end_basefont {
1437: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1438: my $currentstring = '';
1439: if ($target eq 'web' || $target eq 'webgrade') {
1440: $currentstring = $token->[4];
1441: } elsif ($target eq 'tex') {
1442: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1443: if (defined $basesize) {
1444: $currentstring = '}';
1445: }
1446: }
1447: return $currentstring;
1448: }
1449:
1450: #-- <font> tag (end tag required)
1451: sub start_font {
1452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1453: my $currentstring = '';
1454: if ($target eq 'web' || $target eq 'webgrade') {
1455: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1456: $currentstring = $token->[4];
1457: } elsif ($target eq 'tex') {
1458: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1459: if (defined $fontsize) {
1460: $currentstring = '{\\'.$fontsize.' ';
1461: }
1462: }
1463: return $currentstring;
1464: }
1465:
1466: sub end_font {
1467: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1468: my $currentstring = '';
1469: if ($target eq 'web' || $target eq 'webgrade') {
1470: $currentstring = $token->[2];
1471: } elsif ($target eq 'tex') {
1472: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1473: if (defined $fontsize) {
1474: $currentstring = '}';
1475: }
1476: }
1477: return $currentstring;
1478: }
1479:
1480: #-- <strike> tag (end tag required)
1481: sub start_strike {
1482: my ($target,$token) = @_;
1483: my $currentstring = '';
1484: if ($target eq 'web' || $target eq 'webgrade') {
1485: $currentstring .= $token->[4];
1486: } elsif ($target eq 'tex') {
1487: &Apache::lonxml::startredirection();
1488: }
1489: return $currentstring;
1490: }
1491:
1492: sub end_strike {
1493: my ($target,$token) = @_;
1494: my $currentstring = '';
1495: if ($target eq 'web' || $target eq 'webgrade') {
1496: $currentstring .= $token->[2];
1497: } elsif ($target eq 'tex') {
1498: $currentstring=&Apache::lonxml::endredirection();
1499: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1500: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1501: $currentstring=~s/(\S)\s*$/$1\}/;
1502: }
1503: return $currentstring;
1504: }
1505:
1506: #-- <s> tag (end tag required)
1507: sub start_s {
1508: my ($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 $currentstring;
1516: }
1517:
1518: sub end_s {
1519: my ($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 $currentstring;
1530: }
1531:
1532: #-- <sub> tag (end tag required)
1533: sub start_sub {
1534: my ($target,$token) = @_;
1535: my $currentstring = '';
1536: if ($target eq 'web' || $target eq 'webgrade') {
1537: $currentstring .= $token->[4];
1538: } elsif ($target eq 'tex') {
1539: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1540: }
1541: return $currentstring;
1542: }
1543:
1544: sub end_sub {
1545: my ($target,$token) = @_;
1546: my $currentstring = '';
1547: if ($target eq 'web' || $target eq 'webgrade') {
1548: $currentstring .= $token->[2];
1549: } elsif ($target eq 'tex') {
1550: $currentstring .= '}}';
1551: }
1552: return $currentstring;
1553: }
1554:
1555: #-- <sup> tag (end tag required)
1556: sub start_sup {
1557: my ($target,$token) = @_;
1558: my $currentstring = '';
1559: if ($target eq 'web' || $target eq 'webgrade') {
1560: $currentstring .= $token->[4];
1561: } elsif ($target eq 'tex') {
1562: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1563: }
1564: return $currentstring;
1565: }
1566:
1567: sub end_sup {
1568: my ($target,$token) = @_;
1569: my $currentstring = '';
1570: if ($target eq 'web' || $target eq 'webgrade') {
1571: $currentstring .= $token->[2];
1572: } elsif ($target eq 'tex') {
1573: $currentstring .= '}}';
1574: }
1575: return $currentstring;
1576: }
1577:
1578: #-- <hr> tag (end tag forbidden)
1579: sub start_hr {
1580: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1581: my $currentstring = &end_p(); # End enclosing para.
1582: if ($target eq 'web' || $target eq 'webgrade') {
1583: $currentstring .= $token->[4];
1584: } elsif ($target eq 'tex') {
1585:
1586: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1587: #
1588: my $restart_sub = 0;
1589: my $restart_sup = 0;
1590:
1591: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1592: # using the start_ stop_ functions.. those tags only care about
1593: # $target.
1594:
1595: if (&is_inside_of($tagstack, "sub")) {
1596: $restart_sub = 1;
1597: $currentstring .= &end_sub($target, $token, $tagstack,
1598: $parstack, $parser, $safeeval);
1599: }
1600: if (&is_inside_of($tagstack, "sup")) {
1601: $restart_sup = 1;
1602: $currentstring .= &end_sup($target, $token, $tagstack,
1603: $parstack, $parser, $safeeval);
1604: }
1605:
1606: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1607: if (defined $LaTeXwidth) {
1608: if ($LaTeXwidth=~/^%/) {
1609: substr($LaTeXwidth,0,1)='';
1610: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1611: }
1612: } else {
1613: $LaTeXwidth ='0.9\textwidth';
1614: }
1615: my ($pre,$post);
1616: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1617: if (($align eq 'center') || (not defined $align)) {
1618: $pre=''; $post='';
1619: } elsif ($align eq 'left') {
1620: $pre='\rlap{'; $post='} \hfill';
1621: } elsif ($align eq 'right') {
1622: $pre=' \hfill \llap{'; $post='}';
1623: }
1624: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1625: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1626: # Turn stuff back on that we can't be inside of.
1627:
1628: if ($restart_sub) {
1629: $currentstring .= &start_sub($target, $token, $tagstack,
1630: $parstack, $parser, $safeeval);
1631: }
1632: if ($restart_sup) {
1633: $currentstring .= &start_sup($target, $token, $tagstack,
1634: $parstack, $parser, $safeeval);
1635: }
1636: }
1637: return $currentstring;
1638: }
1639:
1640: sub end_hr {
1641: my ($target,$token) = @_;
1642: my $currentstring = '';
1643: if ($target eq 'web' || $target eq 'webgrade') {
1644: $currentstring .= $token->[2];
1645: }
1646: return $currentstring;
1647: }
1648:
1649: #-- <div> tag (end tag required)
1650: {
1651:
1652: # Since div can be nested, the stack below is used
1653: # in 'tex' mode to store the ending strings
1654: # for the div stack.
1655:
1656: my @div_end_stack;
1657:
1658: sub start_div {
1659: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1660: my $currentstring = &end_p(); # Close enclosing para.
1661: if ($target eq 'web' || $target eq 'webgrade') {
1662: $currentstring .= $token->[4];
1663: }
1664: if ($target eq 'tex') {
1665: # 4 possible alignments: left, right, center, and -missing-.
1666: # If inside a table row, we must let the table logic
1667: # do the alignment, however.
1668: #
1669:
1670: my $endstring = '';
1671:
1672: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1673: $safeeval, undef, 1));
1674: if ($align eq 'center') {
1675: $currentstring .= '\begin{center}';
1676: $endstring = '\end{center}';
1677: if (&is_inside_of($tagstack, "table")) {
1678: $currentstring = ¢er_correction().$currentstring;
1679: $endstring .= ¢er_end_correction();
1680: }
1681: }
1682: elsif ($align eq 'right') {
1683: $currentstring .= '\begin{flushright}';
1684: $endstring .= '\end{flushright}';
1685: } elsif ($align eq 'left') {
1686: $currentstring .= '\begin{flushleft}';
1687: $endstring = '\end{flushleft}';
1688: } else {
1689:
1690: }
1691: $currentstring .= "\n"; # For human readability.
1692: $endstring = "\n$endstring\n"; # For human readability
1693: push(@div_end_stack, $endstring);
1694: }
1695: return $currentstring;
1696: }
1697:
1698: sub end_div {
1699: my ($target,$token) = @_;
1700: my $currentstring = '';
1701: if ($target eq 'web' || $target eq 'webgrade') {
1702: $currentstring .= $token->[2];
1703: }
1704: if ($target eq 'tex') {
1705: my $endstring = pop @div_end_stack;
1706: $currentstring .= $endstring;
1707: }
1708: return $currentstring;
1709: }
1710: }
1711:
1712: #-- <a> tag (end tag required)
1713: sub start_a {
1714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1715: my $currentstring = '';
1716: if ($target eq 'web' || $target eq 'webgrade') {
1717: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1718: undef,1);
1719: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1720: if ($href =~ /\S/) {
1721: if ($href !~ m{^https?://}) {
1722: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1723: my $linkurl;
1724: if ($href =~ m{^/uploaded/}) {
1725: $linkurl = $href;
1726: } elsif ($href =~ m{^[^/]}) {
1727: my $path = $url;
1728: $path =~ s{[^/]*$}{};
1729: $linkurl = $path.$href;
1730: }
1731: if ($linkurl =~ m{^/uploaded/}) {
1732: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1733: if (&Apache::lonnet::is_on_map($url)) {
1734: &Apache::lonxml::extlink($linkurl);
1735: } elsif ($env{'request.course.id'}) {
1736: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1737: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1738: if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/(docs|supplemental)/)}) {
1739: my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
1740: if ($cleanhref) {
1741: &Apache::lonxml::extlink($cleanhref);
1742: }
1743: }
1744: }
1745: }
1746: }
1747: }
1748: }
1749: }
1750: return $currentstring;
1751: }
1752:
1753: sub end_a {
1754: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1755: my $currentstring = '';
1756: if ($target eq 'web' || $target eq 'webgrade') {
1757: $currentstring .= $token->[2];
1758: }
1759: if ($target eq 'tex') {
1760: my $href =
1761: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1762: my $name =
1763: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1764: my $uriprint =
1765: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1766: my $anchorprint =
1767: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1768: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1769: $href =~ s/([^\\])%/$1\\\%/g;
1770: # Substitute special symbols... and allow line breaks at each /
1771: #
1772: $href = &Apache::lonxml::latex_special_symbols($href);
1773: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1774: $currentstring .= ' ({\tt URI:'.$href.'})';
1775: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1776: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1777: } else {
1778: $currentstring.='';
1779: }
1780: }
1781: return $currentstring;
1782: }
1783:
1784: #-- <li> tag (end tag optional)
1785: sub start_li {
1786: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1787: my $currentstring = '';
1788: if ($target eq 'web' || $target eq 'webgrade') {
1789: $currentstring = $token->[4];
1790: } elsif ($target eq 'tex') {
1791: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1792: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1793: #FIXME need to support types i and I
1794: if ($type=~/disc/) {
1795: $currentstring .= ' \item[$\bullet$] ';
1796: } elsif ($type=~/circle/) {
1797: $currentstring .= ' \item[$\circ$] ';
1798: } elsif ($type=~/square/) {
1799: $currentstring .= ' \item[$\diamond$] ';
1800: } elsif ($type eq '1') {
1801: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1802: } elsif ($type eq 'A') {
1803: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1804: } elsif ($type eq 'a') {
1805: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1806: } elsif ($value ne '') {
1807: $currentstring .= ' \item['.$value.'] ';
1808: } else {
1809: $currentstring .= ' \item ';
1810: }
1811: $Apache::londefdef::list_index++;
1812: }
1813: return $currentstring;
1814: }
1815:
1816: sub end_li {
1817: my ($target,$token) = @_;
1818: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1819: if ($target eq 'web' || $target eq 'webgrade') {
1820: $currentstring .= $token->[2];
1821: }
1822: return $currentstring;
1823: }
1824:
1825: #-- <u> tag (end tag required)
1826: sub start_u {
1827: my ($target,$token) = @_;
1828: my $currentstring = '';
1829: if ($target eq 'web' || $target eq 'webgrade') {
1830: $currentstring .= $token->[4];
1831: } elsif ($target eq 'tex') {
1832: &Apache::lonxml::startredirection();
1833: }
1834: return $currentstring;
1835: }
1836:
1837: sub end_u {
1838: my ($target,$token) = @_;
1839: my $currentstring = '';
1840: if ($target eq 'web' || $target eq 'webgrade') {
1841: $currentstring .= $token->[2];
1842: } elsif ($target eq 'tex') {
1843: $currentstring=&Apache::lonxml::endredirection();
1844: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1845: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1846: $currentstring=~s/(\S)\s*$/$1\}/;
1847: }
1848: return $currentstring;
1849: }
1850:
1851: #-- <ul> tag (end tag required)
1852: sub start_ul {
1853: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1854: my $currentstring = &end_p(); # Close off enclosing list.
1855: if ($target eq 'web' || $target eq 'webgrade') {
1856: $currentstring .= $token->[4];
1857: } elsif ($target eq 'tex') {
1858: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1859: $Apache::londefdef::list_index=0;
1860: if ($TeXtype eq 'disc') {
1861: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1862: '\renewcommand{\labelitemii}{$\bullet$}'.
1863: '\renewcommand{\labelitemiii}{$\bullet$}'.
1864: '\renewcommand{\labelitemiv}{$\bullet$}';
1865: } elsif ($TeXtype eq 'circle') {
1866: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1867: '\renewcommand{\labelitemii}{$\circ$}'.
1868: '\renewcommand{\labelitemiii}{$\circ$}'.
1869: '\renewcommand{\labelitemiv}{$\circ$}';
1870: } elsif ($TeXtype eq 'square') {
1871: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1872: '\renewcommand{\labelitemii}{$\diamond$}'.
1873: '\renewcommand{\labelitemiii}{$\diamond$}'.
1874: '\renewcommand{\labelitemiv}{$\diamond$}';
1875: }
1876: $currentstring .= '\strut \begin{itemize}';
1877: }
1878: return $currentstring;
1879: }
1880:
1881: sub end_ul {
1882: my ($target,$token) = @_;
1883: my $currentstring = '';
1884: if ($target eq 'web' || $target eq 'webgrade') {
1885: $currentstring = $token->[2];
1886: } elsif ($target eq 'tex') {
1887: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1888: '\renewcommand{\labelitemii}{$\bullet$}'.
1889: '\renewcommand{\labelitemiii}{$\bullet$}'.
1890: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1891: }
1892: return $currentstring;
1893: }
1894:
1895: #-- <menu> tag (end tag required)
1896: sub start_menu {
1897: my ($target,$token) = @_;
1898: my $currentstring = '';
1899: if ($target eq 'web' || $target eq 'webgrade') {
1900: $currentstring = $token->[4];
1901: } elsif ($target eq 'tex') {
1902: $currentstring = " \\begin{itemize} ";
1903: }
1904: return $currentstring;
1905: }
1906:
1907: sub end_menu {
1908: my ($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}";
1914: }
1915: return $currentstring;
1916: }
1917:
1918: #-- <dir> tag (end tag required)
1919: sub start_dir {
1920: my ($target,$token) = @_;
1921: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1922: if ($target eq 'web' || $target eq 'webgrade') {
1923: $currentstring .= $token->[4];
1924: } elsif ($target eq 'tex') {
1925: $currentstring .= " \\begin{itemize} ";
1926: }
1927: return $currentstring;
1928: }
1929:
1930: sub end_dir {
1931: my ($target,$token) = @_;
1932: my $currentstring = '';
1933: if ($target eq 'web' || $target eq 'webgrade') {
1934: $currentstring = $token->[2];
1935: } elsif ($target eq 'tex') {
1936: $currentstring = " \\end{itemize}";
1937: }
1938: return $currentstring;
1939: }
1940:
1941: #-- <ol> tag (end tag required)
1942: sub start_ol {
1943: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1944: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1945: if ($target eq 'web' || $target eq 'webgrade') {
1946: $currentstring .= $token->[4];
1947: } elsif ($target eq 'tex') {
1948: $Apache::londefdef::list_index=0;
1949: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1950: if ($type eq '1') {
1951: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1952: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1953: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1954: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1955: } elsif ($type eq 'A') {
1956: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1957: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1958: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1959: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1960: } elsif ($type eq 'a') {
1961: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1962: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1963: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1964: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1965: } elsif ($type eq 'i') {
1966: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1967: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1968: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1969: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1970: } elsif ($type eq 'I') {
1971: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1972: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1973: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1974: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1975: }
1976: $currentstring .= '\strut \begin{enumerate}';
1977: }
1978: return $currentstring;
1979: }
1980:
1981: sub end_ol {
1982: my ($target,$token) = @_;
1983: my $currentstring = '';
1984: if ($target eq 'web' || $target eq 'webgrade') {
1985: $currentstring = $token->[2];
1986: } elsif ($target eq 'tex') {
1987: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1988: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1989: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1990: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1991: }
1992: return $currentstring;
1993: }
1994:
1995: #-- <dl> tag (end tag required)
1996: sub start_dl {
1997: my ($target,$token) = @_;
1998: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1999: if ($target eq 'web' || $target eq 'webgrade') {
2000: $currentstring .= $token->[4];
2001: } elsif ($target eq 'tex') {
2002: $currentstring .= '\begin{description}';
2003: $Apache::londefdef::DL++;
2004: push(@Apache::londefdef::description,[]);
2005: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
2006: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
2007: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
2008: }
2009: return $currentstring;
2010: }
2011:
2012: sub end_dl {
2013: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2014: my $currentstring = '';
2015: if ($target eq 'web' || $target eq 'webgrade') {
2016: $currentstring = $token->[2];
2017: } elsif ($target eq 'tex') {
2018: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2019: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2020: foreach my $element (@{$Apache::londefdef::description[-1]}) {
2021: $currentstring.=' '.$element.' ';
2022: }
2023: pop(@Apache::londefdef::description);
2024: $currentstring.='\end{description}';
2025: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
2026: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
2027: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
2028: $Apache::londefdef::DL--;
2029: }
2030: return $currentstring;
2031: }
2032:
2033: #-- <dt> tag (end tag optional)
2034: sub start_dt {
2035: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2036: my $currentstring='';
2037: if ($target eq 'web' || $target eq 'webgrade') {
2038: $currentstring = $token->[4];
2039: } elsif ($target eq 'tex') {
2040: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2041: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2042: &Apache::lonxml::startredirection();
2043: $Apache::londefdef::DT[-1]++;
2044: $Apache::londefdef::seenDT[-1]=1;
2045: }
2046: return $currentstring;
2047: }
2048:
2049: sub end_dt {
2050: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2051: my $currentstring = '';
2052: if ($target eq 'web' || $target eq 'webgrade') {
2053: $currentstring = $token->[2];
2054: } elsif ($target eq 'tex') {
2055: if ($Apache::londefdef::DT[-1]) {
2056: my $data=&item_cleanup();
2057: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2058: $Apache::londefdef::DT[-1]--;
2059: }
2060: }
2061: return $currentstring;
2062: }
2063:
2064: sub item_cleanup {
2065: my $item=&Apache::lonxml::endredirection();
2066: $item=~s/\\begin\{center}//g;
2067: $item=~s/\\end\{center}//g;
2068: return $item;
2069: }
2070:
2071: #-- <dd> tag (end tag optional)
2072: sub start_dd {
2073: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2074: my $currentstring = '';
2075: if ($target eq 'web' || $target eq 'webgrade') {
2076: $currentstring = $token->[4];
2077: } elsif ($target eq 'tex') {
2078: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2079: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2080: if (!$Apache::londefdef::seenDT[-1]) {
2081: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2082: }
2083: push(@{$Apache::londefdef::description[-1]},'');
2084: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2085: $Apache::londefdef::DD[-1]++;
2086: &Apache::lonxml::startredirection();
2087: }
2088: return $currentstring;
2089: }
2090:
2091: sub end_dd {
2092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2093: my $currentstring = '';
2094: if ($target eq 'web' || $target eq 'webgrade') {
2095: $currentstring = $token->[2];
2096: } elsif ($target eq 'tex') {
2097: $Apache::londefdef::description[-1]->[-1].=
2098: &Apache::lonxml::endredirection().' \vskip 0mm ';
2099: $Apache::londefdef::DD[-1]--;
2100: }
2101: return $currentstring;
2102: }
2103:
2104: #-- <table> tag (end tag required)
2105: # <table> also ends any prior <p> that is not closed.
2106: # but, unless I allow <p>'s to nest, that's the
2107: # only way I could think of to allow <p> in
2108: # <tr> <th> bodies
2109: #
2110: #list of supported attributes: border,width,TeXwidth,TeXtheme
2111: # align
2112: sub start_table {
2113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2114: my $textwidth = '';
2115: my $currentstring = &end_p();
2116: if ($target eq 'web' || $target eq 'webgrade') {
2117: $currentstring .= $token->[4];
2118: } elsif ($target eq 'tex') {
2119: &disable_para(); # Can't have paras in a table.
2120:
2121: # Get the parameters that we can do something about:
2122:
2123: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2124: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2125: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2126: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2127: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2128:
2129: # The only thing that needs any figuring out is the width.. and then only if it is
2130: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2131: #
2132:
2133: my $table = new Apache::lontable();
2134: if ((defined $border) && ($border > 0)) {
2135: # &Apache::lonnet::logthis("Turning on table borders: $border");
2136: $table->table_border(1);
2137: if (!defined $cell_border) {
2138: $table->cell_border(1); # Default for rules is all if rules not defined.
2139: }
2140: }
2141:
2142: if ((defined $cell_border)) {
2143: if ($cell_border eq 'all') {
2144: $table->cell_border(1);
2145: } elsif ($cell_border eq 'rows') {
2146: $table->cell_border(2);
2147: } elsif ($cell_border eq 'cols') {
2148: $table->cell_border(3);
2149: } elsif($cell_border eq 'groups') {
2150: $table->cell_border(4);
2151: } else {
2152: $table->cell_border(0);
2153: }
2154: }
2155: if (defined $theme) {
2156: $table->theme($theme);
2157: }
2158: if (defined $align) {
2159: $table->alignment($align);
2160: }
2161:
2162: # Missing width is most of page width
2163:
2164: if (!(defined $width)) {
2165: $width = '70%';
2166: }
2167:
2168: # If a percentage, need to calculate what this means in terms of
2169: # page width:
2170:
2171: if ($width =~ /%$/) {
2172: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2173: $width =~ s/%//;
2174: $width = $width * $textwidth / 100.0;
2175: $width .= " mm";
2176: $table->width($width);
2177: }
2178:
2179: push(@Apache::londefdef::table, $table);
2180: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2181:
2182: }
2183: return $currentstring;
2184: }
2185:
2186: sub end_table {
2187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2188: my $currentstring = '';
2189: if ($target eq 'web' || $target eq 'webgrade') {
2190: $currentstring = $token->[2];
2191: } elsif ($target eq 'tex') {
2192:
2193:
2194: my $table = pop(@Apache::londefdef::table);
2195: my $t = $table->generate();
2196: # &Apache::lonnet::logthis("Generating string");
2197: $currentstring = $t->generate_string();
2198: # &Apache::lonnet::logthis("Generated: $currentstring");
2199: &enable_para();
2200:
2201: }
2202: return $currentstring;
2203: }
2204:
2205: #-- <tr> tag (end tag optional)
2206: sub start_tr {
2207: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2208: my $currentstring = '';
2209: if ($target eq 'web' || $target eq 'webgrade') {
2210: $currentstring = $token->[4];
2211: } elsif ($target eq 'tex') {
2212:
2213: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2214: $Apache::londefdef::table[-1]->start_row();
2215:
2216: if ($align ne '') {
2217: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2218: }
2219:
2220: #---------------------------------------------------------------
2221: # Old table code.
2222: #---------------------------------------------------------------
2223:
2224: if (0) {
2225: $Apache::londefdef::table[-1]{'row_number'}++;
2226: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2227: if ($alignchar ne '') {
2228: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2229: } else {
2230: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2231: }
2232: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2233: #
2234: # Need to save the number of table columns to preserve the max # columns.
2235: #
2236: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2237: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2238: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2239: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2240: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2241: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2242: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2243: }
2244: }
2245: return $currentstring;
2246: }
2247:
2248: sub end_tr {
2249: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2250: my $currentstring = &end_p(); # Close any pending <p> in the row.
2251: if ($target eq 'web' || $target eq 'webgrade') {
2252: $currentstring .= $token->[2];
2253: } elsif ($target eq 'tex') {
2254:
2255: # In case the user is missing a </td> or </th> tag:
2256:
2257: if ($Apache::londefdef::TD_redirection) {
2258: &end_td_tex($parstack,$parser,$safeeval);
2259: }
2260: $Apache::londefdef::table[-1]->end_row();
2261:
2262: #-----------------------------------------------
2263: # Old table code
2264: #-----------------------------------------------
2265:
2266: if (0) {
2267: if ($Apache::londefdef::TD_redirection) {
2268: &end_td_tex($parstack,$parser,$safeeval);
2269: }
2270: # Counter columns must be the maximum number of columns seen
2271: # in the table so far so:
2272: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2273: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2274: }
2275: }
2276:
2277:
2278: }
2279: return $currentstring;
2280: }
2281:
2282: #-- <td> tag (end tag optional)
2283: sub start_td {
2284: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2285: my $currentstring = '';
2286: if ($target eq 'web' || $target eq 'webgrade') {
2287: $currentstring = $token->[4];
2288: } elsif ($target eq 'tex') {
2289: $Apache::londefdef::TD_redirection = 1;
2290: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2291: }
2292: return $currentstring;
2293: }
2294:
2295: sub tag_check {
2296: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2297: my @ar=@$parstack;
2298: for (my $i=$#ar-1;$i>=0;$i--) {
2299: if (lc($$tagstack[$i]) eq $good_tag) {
2300: &start_td_tex($parstack,$parser,$safeeval);
2301: last;
2302: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2303: splice @ar, $i+1;
2304: &end_td_tex(\@ar,$parser,$safeeval);
2305: &start_td_tex($parstack,$parser,$safeeval);
2306: last;
2307: }
2308: }
2309: return '';
2310: }
2311:
2312: #
2313: # Factor out cell configuration hash generation:
2314: #
2315:
2316: sub cell_config_hash {
2317: my ($align, $rowspan, $colspan, $width) = @_;
2318: if ($rowspan ne '') {
2319: $rowspan =~ s/^\s+|\s+$//g;
2320: }
2321: if ($colspan ne '') {
2322: $colspan =~ s/^\s+|\s+$//g;
2323: }
2324: my %config;
2325: if ($align ne '') {
2326: $config{'halign'} = $align;
2327: }
2328: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2329: $config{'colspan'} = $colspan;
2330: }
2331: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2332: $config{'rowspan'} = $rowspan;
2333: }
2334: if ($width ne '') {
2335: $config{'width'} = $width;
2336: }
2337: return \%config;
2338: }
2339:
2340: sub start_td_tex {
2341: my ($parstack,$parser,$safeeval) = @_;
2342:
2343: # At this stage, an empty cell is created with the
2344: # appropriate rowspan/colspan and alignment
2345: # attributes, but empty of text. end_td_tex will
2346: # fetch the contents from the recursive parse and
2347: # fill the cell with them:
2348: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2349: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2350: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2351: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2352: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2353:
2354: my $table = $Apache::londefdef::table[-1];
2355: $table->add_cell('', $config);
2356:
2357:
2358: #------------------------------------------------
2359: # Old table code.
2360: #------------------------------------------------
2361:
2362: if (0) {
2363:
2364: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2365: if ($alignchar eq '') {
2366: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2367: }
2368: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2369: $Apache::londefdef::table[-1]{'counter_columns'}++;
2370: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2371: if (defined $TeXwidth) {
2372: my $current_length=&recalc($TeXwidth);
2373: $current_length=~/(\d+\.?\d*)/;
2374: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2375: }
2376: }
2377: &Apache::lonxml::startredirection();
2378: return '';
2379: }
2380:
2381: sub end_td_tex {
2382:
2383: my $text = &Apache::lonxml::endredirection();
2384: my $table = $Apache::londefdef::table[-1];
2385: $table->append_cell_text($text);
2386:
2387: #-------------------------------------------------
2388: # Old table code
2389: #-------------------------------------------------
2390:
2391: if (0) {
2392: my ($parstack,$parser,$safeeval) = @_;
2393: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2394: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2395: my $data = &Apache::lonxml::endredirection();
2396:
2397: # The rowspan array of the table indicates which cells are part of a span.
2398: # n indicates the start of a span set of n rows.
2399: # ^ indicates a cell that continues a span set.
2400: # _ indicates the cell is at the bottom of a span set.
2401: # If this and subsequent cells are part of a rowspan, we must
2402: # push along the row until we find one that is not.
2403:
2404: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2405: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2406: # Part of a span.
2407: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2408: $current_column++;
2409: }
2410: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2411:
2412:
2413: # Get the column and row spans.
2414: # Colspan can be done via \multicolumn if I can figure out the data structs.
2415:
2416: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2417: if (!$colspan) {
2418: $colspan = 1;
2419: }
2420:
2421: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2422: if (!$rowspan) {
2423: $rowspan = 1;
2424: }
2425:
2426:
2427:
2428: for (my $c = 0; $c < $colspan; $c++) {
2429: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2430: for (my $i = 1; $i < $rowspan; $i++) {
2431: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2432: if ($i == ($rowspan-1)) {
2433: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2434: }
2435: }
2436: }
2437:
2438: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2439: if (defined $TeXwidth) {
2440: for (my $c = 0; $c < $colspan; $c++) {
2441: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2442: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2443: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2444: }
2445: } else {
2446: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2447: my $garbage_data=$data;
2448: my $fwidth=0;
2449: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2450: my $current_length=&recalc($1);
2451: $current_length=~/(\d+\.?\d*)/;
2452: if ($fwidth<$1) {$fwidth=$1;}
2453: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2454: }
2455: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2456: my $current_length=$1;
2457: if ($fwidth<$current_length) {$fwidth=$current_length;}
2458: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2459: }
2460: for (my $c = 0; $c < $colspan; $c++) {
2461: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2462: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2463: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2464: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2465: }
2466: } 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)*/) {
2467: my $garbage_data=$data;
2468: my $fwidth=0;
2469: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2470: my $current_length=&recalc($1);
2471: $current_length=~/(\d+\.?\d*)/;
2472: if ($fwidth<$1) {$fwidth=$1;}
2473: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2474: }
2475: while ($garbage_data=~/\\epsfxsize\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/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2480: }
2481: for (my $c = 0; $c < $colspan; $c++) {
2482: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2483: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2484: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2485: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2486: }
2487: $data=~s/\\\\\s*$//;
2488: } else {
2489: $data=~s/^\s+(\S.*)/$1/;
2490: $data=~s/(.*\S)\s+$/$1/;
2491: $data=~s/(\s)+/$1/;
2492: my ($current_length,$min_length)=(0,0);
2493: if ($data=~/\\vskip/) {
2494: my $newdata=$data;
2495: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2496: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2497: foreach my $elementdata (@newdata) {
2498: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2499: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2500: my @words=split(/ /,$elementdata);
2501: foreach my $word (@words) {
2502: my $lengthword=2.5*&LATEX_length($word);
2503: if ($min_length<$lengthword) {$min_length=$lengthword;}
2504: }
2505: }
2506: } else {
2507: $current_length=2.5*&LATEX_length($data);
2508: my @words=split(/ /,$data);
2509: foreach my $word (@words) {
2510: my $lengthword=2*&LATEX_length($word);
2511: if ($min_length<$lengthword) {$min_length=$lengthword;}
2512: }
2513: }
2514: for (my $c = 0; $c < $colspan; $c++) {
2515: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2516: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2517: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2518: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2519: }
2520: }
2521: }
2522: # Substitute all of the tables nested in this cell in their appropriate places.
2523:
2524:
2525: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2526: for (my $in=0; $in<=$nested_count; $in++) {
2527: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2528: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2529: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2530: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2531:
2532: }
2533: # Should be be killing off the 'include' elements as they're used up?
2534:
2535: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2536:
2537:
2538:
2539:
2540: # the colspan array will indicate how many columns will be spanned by this
2541: # cell..this requires that counter_columns also be adjusted accordingly
2542: # so that the next bunch of text goes in the right cell. Note that since
2543: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2544: #
2545:
2546: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2547: for (my $i = 0; $i < ($colspan -1); $i++) {
2548: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2549: }
2550: for (my $r = 0; $r < $rowspan; $r++) {
2551: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2552: # Put empty text in spanned cols.
2553:
2554: }
2555:
2556: }
2557:
2558: return '';
2559: }
2560:
2561: sub end_td {
2562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2563: my $currentstring = '';
2564: if ($target eq 'web' || $target eq 'webgrade') {
2565: $currentstring = $token->[2];
2566: } elsif ($target eq 'tex') {
2567: $Apache::londefdef::TD_redirection =0;
2568: &end_td_tex($parstack,$parser,$safeeval);
2569: }
2570: return $currentstring;
2571: }
2572:
2573: #-- <th> tag (end tag optional)
2574: sub start_th {
2575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2576: my $currentstring = '';
2577: if ($target eq 'web' || $target eq 'webgrade') {
2578: $currentstring = $token->[4];
2579: } elsif ($target eq 'tex') {
2580: $Apache::londefdef::TD_redirection = 1;
2581: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2582: }
2583: return $currentstring;
2584: }
2585:
2586: sub tagg_check {
2587: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2588: my @ar=@$parstack;
2589: for (my $i=$#ar-1;$i>=0;$i--) {
2590: if (lc($$tagstack[$i]) eq $good_tag) {
2591: &start_th_tex($parstack,$parser,$safeeval);
2592: last;
2593: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2594: splice @ar, $i+1;
2595: &end_th_tex(\@ar,$parser,$safeeval);
2596: &start_th_tex($parstack,$parser,$safeeval);
2597: last;
2598: }
2599: }
2600: return '';
2601: }
2602:
2603: sub start_th_tex {
2604: my ($parstack,$parser,$safeeval) = @_;
2605:
2606: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2607: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2608: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2609:
2610: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2611: my $table = $Apache::londefdef::table[-1];
2612: $table->add_cell('\textbf{', $config);
2613:
2614: #-------------------------------------------------------------------------------------
2615: #
2616: # Old table code.
2617: #
2618: #--------------------------------------------------------------------------------------
2619:
2620: if (0) {
2621:
2622:
2623: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2624: if ($alignchar eq '') {
2625: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2626: }
2627: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2628: $Apache::londefdef::table[-1]{'counter_columns'}++;
2629: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2630: if (defined $TeXwidth) {
2631: my $current_length=&recalc($TeXwidth);
2632: $current_length=~/(\d+\.?\d*)/;
2633: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2634: }
2635: }
2636:
2637: # Accept xml until the </th> tag.
2638:
2639: &Apache::lonxml::startredirection();
2640: return '';
2641: }
2642:
2643: sub end_th_tex {
2644: my ($parstack,$parser,$safeeval) = @_;
2645:
2646: my $table = $Apache::londefdef::table[-1];
2647: my $text = &Apache::lonxml::endredirection();
2648: $table->append_cell_text($text.'}');
2649:
2650: #-----------------------------------------------------------------------------
2651: # Old table code:
2652: #-----------------------------------------------------------------------------
2653:
2654: if (0) {
2655: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2656: my $data=&Apache::lonxml::endredirection();
2657: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2658: if (defined $TeXwidth) {
2659: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2660: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2661: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2662: } else {
2663: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2664: my $garbage_data=$data;
2665: my $fwidth=0;
2666: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2667: my $current_length=&recalc($1);
2668: $current_length=~/(\d+\.?\d*)/;
2669: if ($fwidth<$1) {$fwidth=$1;}
2670: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2671: }
2672: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2673: my $current_length=$1;
2674: if ($fwidth<$current_length) {$fwidth=$current_length;}
2675: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2676: }
2677: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2678: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2679: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2680: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2681: } else {
2682: $data=~s/^\s+(\S.*)/$1/;
2683: $data=~s/(.*\S)\s+$/$1/;
2684: $data=~s/(\s)+/$1/;
2685: my ($current_length,$min_length)=(0,0);
2686: if ($data=~/\\vskip/) {
2687: my $newdata=$data;
2688: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2689: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2690: foreach my $elementdata (@newdata) {
2691: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2692: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2693: my @words=split(/ /,$elementdata);
2694: foreach my $word (@words) {
2695: my $lengthword=2.5*&LATEX_length($word);
2696: if ($min_length<$lengthword) {$min_length=$lengthword;}
2697: }
2698: }
2699: } else {
2700: $current_length=2.5*&LATEX_length($data);
2701: my @words=split(/ /,$data);
2702: foreach my $word (@words) {
2703: my $lengthword=2*&LATEX_length($word);
2704: if ($min_length<$lengthword) {$min_length=$lengthword;}
2705: }
2706: }
2707: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2708: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2709: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2710: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2711: }
2712: }
2713: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2714: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2715: }
2716: #make data bold
2717: $data='\textbf{'.$data.'}';
2718: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2719: }
2720: return'';
2721: }
2722:
2723: sub end_th {
2724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2725: my $currentstring = &end_p(); # Close any open <p> in the row.
2726: if ($target eq 'web' || $target eq 'webgrade') {
2727: $currentstring .= $token->[2];
2728: } elsif ($target eq 'tex') {
2729: $Apache::londefdef::TD_redirection =0;
2730: &end_th_tex($parstack,$parser,$safeeval);
2731: }
2732: return $currentstring;
2733: }
2734:
2735: #-- <img> tag (end tag forbidden)
2736: #
2737: # Render the <IMG> tag.
2738: # <IMG> has the following attributes (in addition to the
2739: # standard HTML ones:
2740: # TeXwrap - Governs how the tex target will try to wrap text around
2741: # horizontally aligned images.
2742: # TeXwidth - The width of the image when rendered for print (mm).
2743: # TeXheight - The height of the image when rendered for print (mm)
2744: # (Note there seems to also be support for this as a % of page size)
2745: #
2746: sub start_img {
2747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2748: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2749: undef,1);
2750: if (! $src &&
2751: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2752: ) {
2753: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2754: return '';
2755: }
2756: unless ($src =~ m{^data\:image/gif;base64,}) {
2757: &Apache::lonxml::extlink($src);
2758: }
2759: my $currentstring = '';
2760: my $scaling = .3;
2761:
2762: # Render unto browsers that which are the browser's...
2763:
2764: if ($target eq 'web' || $target eq 'webgrade') {
2765: my $enc = ('yes' eq
2766: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2767: $safeeval)));
2768: unless ($src =~ m{^data\:image/gif;base64,}) {
2769: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2770: $enc);
2771: }
2772:
2773: # and render unto TeX that which is LaTeX
2774: } elsif ($target eq 'tex') {
2775: #
2776: # The alignment will require some superstructure to be put around
2777: # the \includegraphics stuff. At present we can only partially
2778: # simulate the alignments offered by html.
2779: #
2780: #
2781: my $align = lc(&Apache::lonxml::get_param('align',
2782: $parstack,
2783: $safeeval,
2784: undef,1));
2785: if(!$align) {
2786: $align = "bottom"; # This is html's default so it's ours too.
2787: }
2788: #
2789: &Apache::lonxml::debug("Alignemnt = $align");
2790: # LaTeX's image/text wrapping is really bad since it wants to
2791: # make figures float.
2792: # The user has the optional parameter (applicable only to l/r
2793: # alignment to use the picins/parpic directive to get wrapped text
2794: # this is also imperfect.. that's why we give them a choice...
2795: # so they can't yell at us for our choice.
2796: #
2797: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2798: $parstack,
2799: $safeeval,
2800: undef,0);
2801: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2802: if(!$latex_rendering) {
2803: $latex_rendering = "texwrap";
2804: }
2805: # using texwrap inside a table does not work. So, if after all of this,
2806: # texwrap is on, we turn it off if we detect we're in a table:
2807: #
2808: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2809: $latex_rendering = 'parpic';
2810: }
2811:
2812: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2813:
2814: #if original bmp/gif/jpg/png/svg file exist do following:
2815: my $origsrc=$src;
2816: my ($path,$file) = &get_eps_image($src);
2817: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2818: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2819: &Apache::lonxml::debug("path = $path file = $file src = $src");
2820: if (-e $src) {
2821: &Apache::lonxml::debug("$src exists");
2822: my ($height_param,$width_param)=
2823: &image_size($origsrc,0.3,$parstack,$safeeval);
2824: my $size;
2825: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2826: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2827: # Default size if not able to extract that (e.g. eps image).
2828:
2829: # &Apache::lonnet::logthis("Size = $size");
2830:
2831: $size='['.$size;
2832: $size=~s/,$/]/;
2833: $currentstring .= '\graphicspath{{'.$path.'}}'
2834: .'\includegraphics'.$size.'{'.$file.'} ';
2835: my $closure;
2836: ($currentstring, $closure) = &align_latex_image($align,
2837: $latex_rendering,
2838: $currentstring,
2839: $width_param,
2840: $height_param);
2841: $currentstring .= $closure;
2842:
2843: } else {
2844: &Apache::lonxml::debug("$src does not exist");
2845: #original image file doesn't exist so check the alt attribute
2846: my $alt =
2847: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2848: unless ($alt) {
2849: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2850: }
2851:
2852: if ($alt) { $currentstring .= ' '.$alt.' '; }
2853: }
2854:
2855: # And here's where the semi-quote breaks down: allow the user
2856: # to edit the beast as well by rendering the problem for edit:
2857: } elsif ($target eq 'edit') {
2858: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2859: $currentstring .=&Apache::edit::tag_start($target,$token);
2860: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2861: &Apache::edit::browse('src',undef,'alt',$only).' '.
2862: &Apache::edit::search('src',undef,'alt').'<br />';
2863: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2864: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2865: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2866: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2867: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2868: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2869: ['','bottom','middle','top','left','right'],$token,5);
2870: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2871: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2872: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2873: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2874:
2875: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2876: ['no','yes'], $token, 2);
2877: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2878: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2879: }
2880: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2881: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2882: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2883: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2884:
2885: if ($token->[2]{'src'}=~/\$/) {
2886: $currentstring.=&mt('Variable image source');
2887: } elsif ($token->[2]{'src'}=~/\S/) {
2888: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2889: if ($width) { $currentstring.=' width="'.$width.'" '; }
2890: if ($height) { $currentstring.=' height="'.$height.'" '; }
2891: $currentstring .= ' />';
2892: } else {
2893: $currentstring.=&mt("No image source specified");
2894: }
2895: } elsif ($target eq 'modified') {
2896: my ($osrc,$owidth,$oheight)=
2897: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2898: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2899: $safeeval,'src','alt','align',
2900: 'TeXwidth','TeXheight', 'TeXwrap',
2901: 'width','height','encrypturl');
2902: my ($nsrc,$nwidth,$nheight)=
2903: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2904: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2905: &image_replication($loc);
2906: my ($iwidth,$iheight);
2907: if (-e $loc) {
2908: my $image = Image::Magick->new;
2909: $image->Read($loc);
2910: ($iwidth, $iheight) = ($image->Get('width'),
2911: $image->Get('height'));
2912: }
2913: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2914: # changed image or no size specified,
2915: # if they didn't explicitly change the
2916: # width or height use the ones from the image
2917: if ($iwidth && $iheight) {
2918: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2919: $token->[2]{'width'} = $iwidth;$ctag=1;
2920: }
2921: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2922: $token->[2]{'height'}=$iheight;$ctag=1;
2923: }
2924: }
2925: }
2926: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2927: # if we don't have a width or height
2928: if ($iwidth && $cwidth && !$cheight) {
2929: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2930: }
2931: if ($iheight && $cheight && !$cwidth) {
2932: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2933: }
2934: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2935: }
2936:
2937: return $currentstring;
2938: }
2939:
2940: sub end_img {
2941: my ($target,$token) = @_;
2942: my $currentstring = '';
2943: if ($target eq 'web' || $target eq 'webgrade') {
2944: $currentstring = $token->[2];
2945: } elsif ($target eq 'tex') {
2946: $currentstring = '';
2947: }
2948: return $currentstring;
2949: }
2950:
2951: #-- <applet> tag (end tag required)
2952: sub start_applet {
2953: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2954:
2955: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2956: &Apache::lonxml::extlink($code);
2957: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2958: undef,1);
2959: &Apache::lonxml::extlink($archive);
2960: my $currentstring = '';
2961: if ($target eq 'web' || $target eq 'webgrade') {
2962: $currentstring = $token->[4];
2963: } elsif ($target eq 'tex') {
2964: # Turn off some stuff we can't be inside thank you LaTeX
2965:
2966: my $restart_sub = 0;
2967: my $restart_sup = 0;
2968:
2969: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2970: # using the start_ stop_ functions.. those tags only care about
2971: # $target.
2972:
2973: if (&is_inside_of($tagstack, "sub")) {
2974: $restart_sub = 1;
2975: $currentstring .= &end_sub($target, $token, $tagstack,
2976: $parstack, $parser, $safeeval);
2977: }
2978: if (&is_inside_of($tagstack, "sup")) {
2979: $restart_sup = 1;
2980: $currentstring .= &end_sup($target, $token, $tagstack,
2981: $parstack, $parser, $safeeval);
2982: }
2983:
2984: # Now process the applet; just replace it with its alt attribute.
2985:
2986: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2987: $safeeval,undef,1);
2988: unless ($alttag) {
2989: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2990: undef,1);
2991: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2992: $code);
2993: }
2994: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2995: '.}\end{center}';
2996:
2997: # Turn stuff back on that we can't be inside of.
2998:
2999: if ($restart_sub) {
3000: $currentstring .= &start_sub($target, $token, $tagstack,
3001: $parstack, $parser, $safeeval);
3002: }
3003: if ($restart_sup) {
3004: $currentstring .= &start_sup($target, $token, $tagstack,
3005: $parstack, $parser, $safeeval);
3006: }
3007: }
3008: return $currentstring;
3009: }
3010:
3011: sub end_applet {
3012: my ($target,$token) = @_;
3013: my $currentstring = '';
3014: if ($target eq 'web' || $target eq 'webgrade') {
3015: $currentstring = $token->[2];
3016: } elsif ($target eq 'tex') {
3017: }
3018: return $currentstring;
3019: }
3020:
3021: #-- <embed> tag (end tag optional/required)
3022: sub start_embed {
3023: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3024: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3025: &Apache::lonxml::extlink($src);
3026: my $currentstring = '';
3027: if ($target eq 'web' || $target eq 'webgrade') {
3028: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3029: } elsif ($target eq 'tex') {
3030: }
3031: return $currentstring;
3032: }
3033:
3034: sub end_embed {
3035: my ($target,$token) = @_;
3036: my $currentstring = '';
3037: if ($target eq 'web' || $target eq 'webgrade') {
3038: $currentstring = $token->[2];
3039: } elsif ($target eq 'tex') {
3040: # ./.
3041: }
3042: return $currentstring;
3043: }
3044:
3045: #-- <param> tag (end tag forbidden)
3046: sub start_param {
3047: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3048: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3049: undef,1);
3050: if ($name =~/^cabbase$/i) {
3051: my $value=&Apache::lonxml::get_param('value',$parstack,
3052: $safeeval,undef,1);
3053: &Apache::lonxml::extlink($value);
3054: } elsif ($name eq 'flashvars') {
3055: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3056: eq 'application/x-shockwave-flash') {
3057: my $launcher =
3058: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3059: if ($launcher) {
3060: &Apache::lonxml::extlink($launcher);
3061: }
3062: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3063: $safeeval,undef,1);
3064: if ($flashvars ne '') {
3065: foreach my $item (split(/\&/,$flashvars)) {
3066: my ($key,$value)=split(/=/,$item,2);
3067: if ($key eq 'content') {
3068: if ($value ne '') {
3069: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3070: &Apache::lonxml::extlink($dir.$value);
3071: }
3072: } elsif ($key eq 'thumb') {
3073: if ($value ne '') {
3074: &Apache::lonxml::extlink($value);
3075: }
3076: }
3077: }
3078: }
3079: }
3080: }
3081: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3082: if ($src ne '') {
3083: &Apache::lonxml::extlink($src);
3084: }
3085: my $currentstring = '';
3086: if ($target eq 'web' || $target eq 'webgrade') {
3087: my %toconvert;
3088: if ($src) { $toconvert{'src'}= $src; }
3089: if ($name=~/^cabbase$/i) {
3090: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3091: $safeeval,undef,1);
3092: }
3093: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3094: } elsif ($target eq 'tex') {
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_param {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web' || $target eq 'webgrade') {
3103: $currentstring = $token->[2];
3104: } elsif ($target eq 'tex') {
3105: }
3106: return $currentstring;
3107: }
3108:
3109: #-- <allow> tag
3110: sub start_allow {
3111: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3112: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3113: &Apache::lonxml::extlink($src);
3114:
3115: if ($target eq 'tex') { &image_replication($src); }
3116: my $result;
3117: if ($target eq 'edit') {
3118: $result .=&Apache::edit::tag_start($target,$token);
3119: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3120: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3121: } elsif ($target eq 'modified') {
3122: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3123: $safeeval,'src');
3124: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3125: }
3126: return $result;
3127: }
3128:
3129: sub end_allow {
3130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3131: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3132: return '';
3133: }
3134:
3135: #-- Frames (end tag required)
3136: #-- <frameset>
3137: sub start_frameset {
3138: my ($target,$token) = @_;
3139: my $currentstring = ''; # Close any pending para.
3140: if ($target eq 'web' || $target eq 'webgrade') {
3141: $currentstring =
3142: &Apache::loncommon::start_page($Apache::londefdef::title,
3143: $Apache::londefdef::head,
3144: {'add_entries' => $token->[2],
3145: # 'no_title' => 1,
3146: 'force_register' => 1,
3147: 'frameset' => 1,});
3148:
3149: }
3150: return $currentstring;
3151: }
3152:
3153: sub end_frameset {
3154: my ($target,$token) = @_;
3155: my $currentstring = '';
3156: if ($target eq 'web' || $target eq 'webgrade') {
3157: $currentstring = $token->[2];
3158: }
3159: return $currentstring;
3160: }
3161:
3162: #-- <xmp> (end tag required)
3163: sub start_xmp {
3164: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3165: my $currentstring = '';
3166: if ($target eq 'web' || $target eq 'webgrade') {
3167: $currentstring .= $token->[4];
3168: } elsif ($target eq 'tex') {
3169: $currentstring .= '\begin{verbatim}';
3170: }
3171: return $currentstring;
3172: }
3173:
3174: sub end_xmp {
3175: my ($target,$token) = @_;
3176: my $currentstring = '';
3177: if ($target eq 'web' || $target eq 'webgrade') {
3178: $currentstring .= $token->[2];
3179: } elsif ($target eq 'tex') {
3180: $currentstring .= '\end{verbatim}';
3181: }
3182: return $currentstring;
3183: }
3184:
3185: #-- <pre> (end tag required)
3186: sub start_pre {
3187: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3188: my $currentstring = &end_p(); # close off pending <p>
3189: if ($target eq 'web' || $target eq 'webgrade') {
3190: $currentstring .= $token->[4];
3191: } elsif ($target eq 'tex') {
3192: $currentstring .= '\begin{verbatim}';
3193: &Apache::lonxml::disable_LaTeX_substitutions();
3194: }
3195: return $currentstring;
3196: }
3197:
3198: sub end_pre {
3199: my ($target,$token) = @_;
3200: my $currentstring = '';
3201: if ($target eq 'web' || $target eq 'webgrade') {
3202: $currentstring .= $token->[2];
3203: } elsif ($target eq 'tex') {
3204: $currentstring .= '\end{verbatim}';
3205: &Apache::lonxml::enable_LaTeX_substitutions();
3206: }
3207: return $currentstring;
3208: }
3209:
3210: #-- <insert>
3211: sub start_insert {
3212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3213: my $currentstring = '';
3214: if ($target eq 'web' || $target eq 'webgrade') {
3215: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3216: $currentstring .= '<b>'.$display.'</b>';;
3217: }
3218: return $currentstring;
3219: }
3220:
3221: sub end_insert {
3222: my ($target,$token) = @_;
3223: my $currentstring = '';
3224: if ($target eq 'web' || $target eq 'webgrade') {
3225: $currentstring .= '';
3226: }
3227: return $currentstring;
3228: }
3229:
3230: #-- <externallink>
3231: sub start_externallink {
3232: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3233: my $currentstring = '';
3234: if ($target eq 'web' || $target eq 'webgrade') {
3235: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3236: $currentstring .= '<b>'.$display.'</b>';;
3237: }
3238: return $currentstring;
3239: }
3240:
3241: sub end_externallink {
3242: my ($target,$token) = @_;
3243: my $currentstring = '';
3244: if ($target eq 'web' || $target eq 'webgrade') {
3245: $currentstring .= '';
3246: }
3247: return $currentstring;
3248: }
3249:
3250: #-- <blankspace heigth="">
3251: sub start_blankspace {
3252: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3253: my $currentstring = &end_p(); # closes off any unclosed <p>
3254: if ($target eq 'tex') {
3255: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3256: $currentstring .= '\vskip '.$howmuch.' ';
3257: }
3258: return $currentstring;
3259: }
3260:
3261: sub end_blankspace {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'tex') {
3265: $currentstring .= '';
3266: }
3267: return $currentstring;
3268: }
3269:
3270: #-- <abbr> tag (end tag required)
3271: sub start_abbr {
3272: my ($target,$token) = @_;
3273: my $currentstring = '';
3274: if ($target eq 'web' || $target eq 'webgrade') {
3275: $currentstring = $token->[4];
3276: }
3277: return $currentstring;
3278: }
3279:
3280: sub end_abbr {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web' || $target eq 'webgrade') {
3284: $currentstring = $token->[2];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: #-- <acronym> tag (end tag required)
3290: sub start_acronym {
3291: my ($target,$token) = @_;
3292: my $currentstring = '';
3293: if ($target eq 'web' || $target eq 'webgrade') {
3294: $currentstring = $token->[4];
3295: }
3296: return $currentstring;
3297: }
3298:
3299: sub end_acronym {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web' || $target eq 'webgrade') {
3303: $currentstring = $token->[2];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: #-- <area> tag (end tag forbidden)
3309: sub start_area {
3310: my ($target,$token) = @_;
3311: my $currentstring = '';
3312: if ($target eq 'web' || $target eq 'webgrade') {
3313: $currentstring = $token->[4];
3314: }
3315: return $currentstring;
3316: }
3317:
3318: sub end_area {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web' || $target eq 'webgrade') {
3322: $currentstring = $token->[2];
3323: }
3324: return $currentstring;
3325: }
3326:
3327: #-- <base> tag (end tag forbidden)
3328: sub start_base {
3329: my ($target,$token) = @_;
3330: my $currentstring = '';
3331: if ($target eq 'web' || $target eq 'webgrade') {
3332: $currentstring = $token->[4];
3333: }
3334: return $currentstring;
3335: }
3336:
3337: sub end_base {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web' || $target eq 'webgrade') {
3341: $currentstring = $token->[2];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: #-- <bdo> tag (end tag required)
3347: sub start_bdo {
3348: my ($target,$token) = @_;
3349: my $currentstring = '';
3350: if ($target eq 'web' || $target eq 'webgrade') {
3351: $currentstring = $token->[4];
3352: }
3353: return $currentstring;
3354: }
3355:
3356: sub end_bdo {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web' || $target eq 'webgrade') {
3360: $currentstring = $token->[2];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: #-- <bgsound> tag (end tag optional)
3366: sub start_bgsound {
3367: my ($target,$token) = @_;
3368: my $currentstring = '';
3369: if ($target eq 'web' || $target eq 'webgrade') {
3370: $currentstring = $token->[4];
3371: }
3372: return $currentstring;
3373: }
3374:
3375: sub end_bgsound {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web' || $target eq 'webgrade') {
3379: $currentstring = $token->[2];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: #-- <blink> tag (end tag required)
3385: sub start_blink {
3386: my ($target,$token) = @_;
3387: my $currentstring = '';
3388: if ($target eq 'web' || $target eq 'webgrade') {
3389: $currentstring = $token->[4];
3390: }
3391: return $currentstring;
3392: }
3393:
3394: sub end_blink {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web' || $target eq 'webgrade') {
3398: $currentstring = $token->[2];
3399: }
3400: return $currentstring;
3401: }
3402:
3403: #-- <blockquote> tag (end tag required)
3404: sub start_blockquote {
3405: my ($target,$token) = @_;
3406: my $currentstring = &end_p(); # Close any unclosed <p>
3407: if ($target eq 'web' || $target eq 'webgrade') {
3408: $currentstring .= $token->[4];
3409: }
3410: if ($target eq 'tex') {
3411: $currentstring .= '\begin{quote}';
3412: }
3413: return $currentstring;
3414: }
3415:
3416: sub end_blockquote {
3417: my ($target,$token) = @_;
3418: my $currentstring = '';
3419: if ($target eq 'web' || $target eq 'webgrade') {
3420: $currentstring = $token->[2];
3421: }
3422: if ($target eq 'tex') {
3423: $currentstring = '\end{quote}';
3424: }
3425: return $currentstring;
3426: }
3427:
3428: #-- <button> tag (end tag required)
3429: sub start_button {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web' || $target eq 'webgrade') {
3433: $currentstring = $token->[4];
3434: }
3435: return $currentstring;
3436: }
3437:
3438: sub end_button {
3439: my ($target,$token) = @_;
3440: my $currentstring = '';
3441: if ($target eq 'web' || $target eq 'webgrade') {
3442: $currentstring = $token->[2];
3443: }
3444: return $currentstring;
3445: }
3446:
3447: #-- <caption> tag (end tag required)
3448: sub start_caption {
3449: my ($target,$token) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web' || $target eq 'webgrade') {
3452: $currentstring = $token->[4];
3453: }
3454: return $currentstring;
3455: }
3456:
3457: sub end_caption {
3458: my ($target,$token) = @_;
3459: my $currentstring = '';
3460: if ($target eq 'web' || $target eq 'webgrade') {
3461: $currentstring = $token->[2];
3462: }
3463: return $currentstring;
3464: }
3465:
3466: #-- <col> tag (end tag forbdden)
3467: sub start_col {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web' || $target eq 'webgrade') {
3471: $currentstring = $token->[4];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: sub end_col {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web' || $target eq 'webgrade') {
3480: $currentstring = $token->[2];
3481: }
3482: return $currentstring;
3483: }
3484:
3485: #-- <colgroup tag (end tag optional)
3486: sub start_colgroup {
3487: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web' || $target eq 'webgrade') {
3490: $currentstring = $token->[4];
3491: }
3492: if ($target eq 'tex') {
3493: # TODO: Ensure this tag is in a table:
3494:
3495: # Fetch the attributes and build the hash for the
3496: # call to define_colgroup.
3497:
3498: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3499: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3500:
3501: my %colgroup_params;
3502: if ($span ne '') {
3503: $colgroup_params{'span'} = $span;
3504: }
3505: if ($halign ne '') {
3506: $colgroup_params{'halign'} = $halign;
3507: }
3508:
3509: my $table = $Apache::londefdef::table[-1];
3510: $table->define_colgroup(\%colgroup_params);
3511:
3512: }
3513: return $currentstring;
3514: }
3515:
3516: sub end_colgroup {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web' || $target eq 'webgrade') {
3520: $currentstring = $token->[2];
3521: }
3522: return $currentstring;
3523: }
3524:
3525:
3526: #-- <del> tag (end tag required)
3527: sub start_del {
3528: my ($target,$token) = @_;
3529: my $currentstring = '';
3530: if ($target eq 'web' || $target eq 'webgrade') {
3531: $currentstring = $token->[4];
3532: } elsif ($target eq 'tex') {
3533: &disable_para();
3534: $currentstring .= '\st{';
3535: }
3536: return $currentstring;
3537: }
3538:
3539: sub end_del {
3540: my ($target,$token) = @_;
3541: my $currentstring = '';
3542: if ($target eq 'web' || $target eq 'webgrade') {
3543: $currentstring = $token->[2];
3544: } elsif ($target eq 'tex') {
3545: &enable_para();
3546: $currentstring = '}';
3547: }
3548: return $currentstring;
3549: }
3550:
3551: #-- <fieldset> tag (end tag required)
3552: sub start_fieldset {
3553: my ($target,$token) = @_;
3554: my $currentstring = '';
3555: if ($target eq 'web' || $target eq 'webgrade') {
3556: $currentstring = $token->[4];
3557: }
3558: return $currentstring;
3559: }
3560:
3561: sub end_fieldset {
3562: my ($target,$token) = @_;
3563: my $currentstring = '';
3564: if ($target eq 'web' || $target eq 'webgrade') {
3565: $currentstring = $token->[2];
3566: }
3567: return $currentstring;
3568: }
3569:
3570: #-- <frame> tag (end tag forbidden)
3571: sub start_frame {
3572: my ($target,$token) = @_;
3573: my $currentstring = '';
3574: if ($target eq 'web' || $target eq 'webgrade') {
3575: $currentstring = $token->[4];
3576: }
3577: return $currentstring;
3578: }
3579:
3580: sub end_frame {
3581: my ($target,$token) = @_;
3582: my $currentstring = '';
3583: if ($target eq 'web' || $target eq 'webgrade') {
3584: $currentstring = $token->[2];
3585: }
3586: return $currentstring;
3587: }
3588:
3589: #-- <iframe> tag (end tag required)
3590: sub start_iframe {
3591: my ($target,$token) = @_;
3592: my $currentstring = '';
3593: if ($target eq 'web' || $target eq 'webgrade') {
3594: my ($src,$url,$query);
3595: if ($token->[2]->{'src'}) {
3596: $src = $token->[2]->{'src'};
3597: } elsif ($token->[2]->{'SRC'}) {
3598: $src = $token->[2]->{'SRC'};
3599: }
3600: if ($src) {
3601: ($url,$query) = ($src =~ /^([^?]+)\??([^?]*)$/);
3602: if ($query =~ /inhibitmenu=yes/) {
3603: $currentstring = $token->[4];
3604: } else {
3605: my $inhibit;
3606: if ($url =~ m{^[^/.].*\.x?html?$}) {
3607: $inhibit = 1;
3608: } elsif ($url =~ m{^/(uploaded|res)/.*\.x?html?$}) {
3609: $inhibit = 1;
3610: }
3611: if ($inhibit) {
3612: $currentstring = '<iframe ';
3613: foreach my $attrib (@{$token->[3]}) {
3614: if (lc($attrib) eq 'src') {
3615: if ($query) {
3616: $query.='&inhibitmenu=yes';
3617: } else {
3618: $query = 'inhibitmenu=yes';
3619: }
3620: $currentstring .= 'src="'.$url.'?'.$query.'" ';
3621: } else {
3622: $currentstring .= lc($attrib).'="'.$token->[2]->{$attrib}.'" ';
3623: }
3624: }
3625: $currentstring =~ s/\s+$//;
3626: if ($token->[4] =~ m{/>$}) {
3627: $currentstring .= ' />';
3628: } else {
3629: $currentstring .= '>';
3630: }
3631: } else {
3632: $currentstring = $token->[4];
3633: }
3634: }
3635: if (($url !~ m{^https?://}) && ($env{'request.course.id'})) {
3636: my $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
3637: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3638: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3639: if ($url =~ m{^([^/]|/uploaded/)}) {
3640: my $cleanhref = &clean_docs_httpref($url,$docuri,$cdom,$cnum);
3641: if ($cleanhref) {
3642: &Apache::lonxml::extlink($cleanhref);
3643: }
3644: } elsif (($url =~ m{/res/$LONCAPA::domain_re/}) && ($docuri =~ m{^\Q/uploaded/$cdom/$cnum/docs/\E})) {
3645: if (!&Apache::lonnet::allowed('bre',$url)) {
3646: if (&Apache::lonnet::is_on_map($url)) {
3647: &Apache::lonxml::extlink($url);
3648: }
3649: }
3650: }
3651: }
3652: } else {
3653: $currentstring = $token->[4];
3654: }
3655: }
3656: return $currentstring;
3657: }
3658:
3659: sub end_iframe {
3660: my ($target,$token) = @_;
3661: my $currentstring = '';
3662: if ($target eq 'web' || $target eq 'webgrade') {
3663: $currentstring = $token->[2];
3664: }
3665: return $currentstring;
3666: }
3667:
3668: #-- <ins> tag (end tag required)
3669: sub start_ins {
3670: my ($target,$token) = @_;
3671: my $currentstring = '';
3672: if ($target eq 'web' || $target eq 'webgrade') {
3673: $currentstring = $token->[4];
3674: }
3675: return $currentstring;
3676: }
3677:
3678: sub end_ins {
3679: my ($target,$token) = @_;
3680: my $currentstring = '';
3681: if ($target eq 'web' || $target eq 'webgrade') {
3682: $currentstring = $token->[2];
3683: }
3684: return $currentstring;
3685: }
3686:
3687: #-- <isindex> tag (end tag forbidden)
3688: sub start_isindex {
3689: my ($target,$token) = @_;
3690: my $currentstring = '';
3691: if ($target eq 'web' || $target eq 'webgrade') {
3692: $currentstring = $token->[4];
3693: }
3694: return $currentstring;
3695: }
3696:
3697: sub end_isindex {
3698: my ($target,$token) = @_;
3699: my $currentstring = '';
3700: if ($target eq 'web' || $target eq 'webgrade') {
3701: $currentstring = $token->[2];
3702: }
3703: return $currentstring;
3704: }
3705:
3706: #-- <keygen> tag (end tag forbidden)
3707: sub start_keygen {
3708: my ($target,$token) = @_;
3709: my $currentstring = '';
3710: if ($target eq 'web' || $target eq 'webgrade') {
3711: $currentstring = $token->[4];
3712: }
3713: return $currentstring;
3714: }
3715:
3716: sub end_keygen {
3717: my ($target,$token) = @_;
3718: my $currentstring = '';
3719: if ($target eq 'web' || $target eq 'webgrade') {
3720: $currentstring = $token->[2];
3721: }
3722: return $currentstring;
3723: }
3724:
3725: #-- <label> tag
3726: sub start_label {
3727: my ($target,$token) = @_;
3728: my $currentstring = '';
3729: if ($target eq 'web' || $target eq 'webgrade') {
3730: $currentstring = $token->[4];
3731: }
3732: return $currentstring;
3733: }
3734:
3735: sub end_label {
3736: my ($target,$token) = @_;
3737: my $currentstring = '';
3738: if ($target eq 'web' || $target eq 'webgrade') {
3739: $currentstring = $token->[2];
3740: }
3741: return $currentstring;
3742: }
3743:
3744: #-- <layer> tag (end tag required)
3745: sub start_layer {
3746: my ($target,$token) = @_;
3747: my $currentstring = '';
3748: if ($target eq 'web' || $target eq 'webgrade') {
3749: $currentstring = $token->[4];
3750: }
3751: return $currentstring;
3752: }
3753:
3754: sub end_layer {
3755: my ($target,$token) = @_;
3756: my $currentstring = '';
3757: if ($target eq 'web' || $target eq 'webgrade') {
3758: $currentstring = $token->[2];
3759: }
3760: return $currentstring;
3761: }
3762:
3763: #-- <legend> tag (end tag required)
3764: sub start_legend {
3765: my ($target,$token) = @_;
3766: my $currentstring = '';
3767: if ($target eq 'web' || $target eq 'webgrade') {
3768: $currentstring = $token->[4];
3769: }
3770: return $currentstring;
3771: }
3772:
3773: sub end_legend {
3774: my ($target,$token) = @_;
3775: my $currentstring = '';
3776: if ($target eq 'web' || $target eq 'webgrade') {
3777: $currentstring = $token->[2];
3778: }
3779: return $currentstring;
3780: }
3781:
3782: #-- <link> tag (end tag forbidden)
3783: sub start_link {
3784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3785: my $currentstring = '';
3786: if ($target eq 'web' || $target eq 'webgrade') {
3787: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3788: undef,1);
3789: &Apache::lonxml::extlink($href);
3790: $currentstring = $token->[4];
3791: }
3792: return $currentstring;
3793: }
3794:
3795: sub end_link {
3796: my ($target,$token) = @_;
3797: my $currentstring = '';
3798: if ($target eq 'web' || $target eq 'webgrade') {
3799: $currentstring = $token->[2];
3800: }
3801: return $currentstring;
3802: }
3803:
3804: #-- <marquee> tag (end tag optional)
3805: sub start_marquee {
3806: my ($target,$token) = @_;
3807: my $currentstring = '';
3808: if ($target eq 'web' || $target eq 'webgrade') {
3809: $currentstring = $token->[4];
3810: }
3811: return $currentstring;
3812: }
3813:
3814: sub end_marquee {
3815: my ($target,$token) = @_;
3816: my $currentstring = '';
3817: if ($target eq 'web' || $target eq 'webgrade') {
3818: $currentstring = $token->[2];
3819: }
3820: return $currentstring;
3821: }
3822:
3823: #-- <multicol> tag (end tag required)
3824: sub start_multicol {
3825: my ($target,$token) = @_;
3826: my $currentstring = &end_p(); # Close any pending <p>
3827: if ($target eq 'web' || $target eq 'webgrade') {
3828: $currentstring .= $token->[4];
3829: }
3830: return $currentstring;
3831: }
3832:
3833: sub end_multicol {
3834: my ($target,$token) = @_;
3835: my $currentstring = '';
3836: if ($target eq 'web' || $target eq 'webgrade') {
3837: $currentstring = $token->[2];
3838: }
3839: return $currentstring;
3840: }
3841:
3842: #-- <nobr> tag (end tag required)
3843: sub start_nobr {
3844: my ($target,$token) = @_;
3845: my $currentstring = '';
3846: if ($target eq 'web' || $target eq 'webgrade') {
3847: $currentstring = $token->[4];
3848: } elsif ($target eq 'tex') {
3849: $currentstring='\mbox{';
3850: }
3851: return $currentstring;
3852: }
3853:
3854: sub end_nobr {
3855: my ($target,$token) = @_;
3856: my $currentstring = '';
3857: if ($target eq 'web' || $target eq 'webgrade') {
3858: $currentstring = $token->[2];
3859: } elsif ($target eq 'tex') {
3860: $currentstring='}';
3861: }
3862: return $currentstring;
3863: }
3864:
3865: #-- <noembed> tag (end tag required)
3866: sub start_noembed {
3867: my ($target,$token) = @_;
3868: my $currentstring = '';
3869: if ($target eq 'web' || $target eq 'webgrade') {
3870: $currentstring = $token->[4];
3871: }
3872: return $currentstring;
3873: }
3874:
3875: sub end_noembed {
3876: my ($target,$token) = @_;
3877: my $currentstring = '';
3878: if ($target eq 'web' || $target eq 'webgrade') {
3879: $currentstring = $token->[2];
3880: }
3881: return $currentstring;
3882: }
3883:
3884: #-- <noframes> tag (end tag required)
3885: sub start_noframes {
3886: my ($target,$token) = @_;
3887: my $currentstring = '';
3888: if ($target eq 'web' || $target eq 'webgrade') {
3889: $currentstring = $token->[4];
3890: }
3891: return $currentstring;
3892: }
3893:
3894: sub end_noframes {
3895: my ($target,$token) = @_;
3896: my $currentstring = '';
3897: if ($target eq 'web' || $target eq 'webgrade') {
3898: $currentstring = $token->[2];
3899: }
3900: return $currentstring;
3901: }
3902:
3903: #-- <nolayer> tag (end tag required)
3904: sub start_nolayer {
3905: my ($target,$token) = @_;
3906: my $currentstring = '';
3907: if ($target eq 'web' || $target eq 'webgrade') {
3908: $currentstring = $token->[4];
3909: }
3910: return $currentstring;
3911: }
3912:
3913: sub end_nolayer {
3914: my ($target,$token) = @_;
3915: my $currentstring = '';
3916: if ($target eq 'web' || $target eq 'webgrade') {
3917: $currentstring = $token->[2];
3918: }
3919: return $currentstring;
3920: }
3921:
3922: #-- <noscript> tag (end tag required)
3923: sub start_noscript {
3924: my ($target,$token) = @_;
3925: my $currentstring = '';
3926: if ($target eq 'web' || $target eq 'webgrade') {
3927: $currentstring = $token->[4];
3928: }
3929: return $currentstring;
3930: }
3931:
3932: sub end_noscript {
3933: my ($target,$token) = @_;
3934: my $currentstring = '';
3935: if ($target eq 'web' || $target eq 'webgrade') {
3936: $currentstring = $token->[2];
3937: }
3938: return $currentstring;
3939: }
3940:
3941: #-- <object> tag (end tag required)
3942: sub start_object {
3943: my ($target,$token) = @_;
3944: my $currentstring = '';
3945: if ($target eq 'web' || $target eq 'webgrade') {
3946: $currentstring = $token->[4];
3947: }
3948: return $currentstring;
3949: }
3950:
3951: sub end_object {
3952: my ($target,$token) = @_;
3953: my $currentstring = '';
3954: if ($target eq 'web' || $target eq 'webgrade') {
3955: $currentstring = $token->[2];
3956: }
3957: return $currentstring;
3958: }
3959:
3960: #-- <optgroup> tag (end tag required)
3961: sub start_optgroup {
3962: my ($target,$token) = @_;
3963: my $currentstring = '';
3964: if ($target eq 'web' || $target eq 'webgrade') {
3965: $currentstring = $token->[4];
3966: }
3967: return $currentstring;
3968: }
3969:
3970: sub end_optgroup {
3971: my ($target,$token) = @_;
3972: my $currentstring = '';
3973: if ($target eq 'web' || $target eq 'webgrade') {
3974: $currentstring = $token->[2];
3975: }
3976: return $currentstring;
3977: }
3978:
3979: #-- <samp> tag (end tag required)
3980: sub start_samp {
3981: my ($target,$token) = @_;
3982: my $currentstring = '';
3983: if ($target eq 'web' || $target eq 'webgrade') {
3984: $currentstring = $token->[4];
3985: } elsif ($target eq 'tex') {
3986: $currentstring='\texttt{';
3987: }
3988: return $currentstring;
3989: }
3990:
3991: sub end_samp {
3992: my ($target,$token) = @_;
3993: my $currentstring = '';
3994: if ($target eq 'web' || $target eq 'webgrade') {
3995: $currentstring = $token->[2];
3996: } elsif ($target eq 'tex') {
3997: $currentstring='}';
3998: }
3999: return $currentstring;
4000: }
4001:
4002: #-- <server> tag
4003: sub start_server {
4004: my ($target,$token) = @_;
4005: my $currentstring = '';
4006: if ($target eq 'web' || $target eq 'webgrade') {
4007: $currentstring = $token->[4];
4008: }
4009: return $currentstring;
4010: }
4011:
4012: sub end_server {
4013: my ($target,$token) = @_;
4014: my $currentstring = '';
4015: if ($target eq 'web' || $target eq 'webgrade') {
4016: $currentstring = $token->[2];
4017: }
4018: return $currentstring;
4019: }
4020:
4021: #-- <spacer> tag (end tag forbidden)
4022: sub start_spacer {
4023: my ($target,$token) = @_;
4024: my $currentstring = &end_p(); # Close off any open <p> tag.
4025: if ($target eq 'web' || $target eq 'webgrade') {
4026: $currentstring .= $token->[4];
4027: }
4028: return $currentstring;
4029: }
4030:
4031: sub end_spacer {
4032: my ($target,$token) = @_;
4033: my $currentstring = '';
4034: if ($target eq 'web' || $target eq 'webgrade') {
4035: $currentstring = $token->[2];
4036: }
4037: return $currentstring;
4038: }
4039:
4040: #-- <span> tag (end tag required)
4041: sub start_span {
4042: my ($target,$token) = @_;
4043: my $currentstring = '';
4044: if ($target eq 'web' || $target eq 'webgrade') {
4045: $currentstring = $token->[4];
4046: }
4047: return $currentstring;
4048: }
4049:
4050: sub end_span {
4051: my ($target,$token) = @_;
4052: my $currentstring = '';
4053: if ($target eq 'web' || $target eq 'webgrade') {
4054: $currentstring = $token->[2];
4055: }
4056: return $currentstring;
4057: }
4058:
4059: #-- <tbody> tag (end tag optional)
4060: sub start_tbody {
4061: my ($target,$token) = @_;
4062: my $currentstring = '';
4063: if ($target eq 'web' || $target eq 'webgrade') {
4064: $currentstring = $token->[4];
4065: }
4066: if ($target eq 'tex') {
4067: # TODO: Ensure this tag is within a table:
4068:
4069: my $table = $Apache::londefdef::table[-1];
4070: $table->start_body();
4071: }
4072: return $currentstring;
4073: }
4074:
4075: sub end_tbody {
4076: my ($target,$token) = @_;
4077: my $currentstring = '';
4078: if ($target eq 'web' || $target eq 'webgrade') {
4079: $currentstring = $token->[2];
4080: }
4081: if($target eq 'tex') {
4082: # TODO: Ensure this tag is within a table:
4083:
4084: my $table = $Apache::londefdef::table[-1];
4085: $table->end_body();
4086: }
4087: return $currentstring;
4088: }
4089:
4090: #-- <tfoot> tag (end tag optional)
4091: sub start_tfoot {
4092: my ($target,$token) = @_;
4093: my $currentstring = '';
4094: if ($target eq 'web' || $target eq 'webgrade') {
4095: $currentstring = $token->[4];
4096: }
4097: if ($target eq 'tex') {
4098: # TODO: ensure this is within a table tag.
4099: my $table = $Apache::londefdef::table[-1];
4100: $table->start_foot();
4101: }
4102: return $currentstring;
4103: }
4104:
4105: sub end_tfoot {
4106: my ($target,$token) = @_;
4107: my $currentstring = '';
4108: if ($target eq 'web' || $target eq 'webgrade') {
4109: $currentstring = $token->[2];
4110: }
4111: if ($target eq 'tex') {
4112: # TODO: Ensure this is in side a table
4113: my $table = $Apache::londefdef::table[-1];
4114: $table->end_foot();
4115: }
4116: return $currentstring;
4117: }
4118:
4119: #-- <thead> tag (end tag optional)
4120: sub start_thead {
4121: my ($target,$token) = @_;
4122: my $currentstring = '';
4123: if ($target eq 'web' || $target eq 'webgrade') {
4124: $currentstring = $token->[4];
4125: }
4126: if ($target eq 'tex') {
4127: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4128: my $table = $Apache::londefdef::table[-1];
4129: $table->start_head();
4130: }
4131: return $currentstring;
4132: }
4133:
4134: sub end_thead {
4135: my ($target,$token) = @_;
4136: my $currentstring = '';
4137: if ($target eq 'web' || $target eq 'webgrade') {
4138: $currentstring = $token->[2];
4139: }
4140: if ($target eq 'tex') {
4141: # TODO: Verify we are in a table and ignore tag if not.
4142:
4143: my $table = $Apache::londefdef::table[-1];
4144: $table->end_head();
4145: }
4146: return $currentstring;
4147: }
4148:
4149: #-- <var> tag
4150: sub start_var {
4151: my ($target,$token) = @_;
4152: my $currentstring = '';
4153: if ($target eq 'web' || $target eq 'webgrade') {
4154: $currentstring = $token->[4];
4155: } elsif ($target eq 'tex') {
4156: $currentstring = '\textit{';
4157: }
4158: return $currentstring;
4159: }
4160:
4161: sub end_var {
4162: my ($target,$token) = @_;
4163: my $currentstring = '';
4164: if ($target eq 'web' || $target eq 'webgrade') {
4165: $currentstring = $token->[2];
4166: } elsif ($target eq 'tex') {
4167: $currentstring = '}';
4168: }
4169: return $currentstring;
4170: }
4171:
4172: #-- <wbr> tag (end tag forbidden)
4173: sub start_wbr {
4174: my ($target,$token) = @_;
4175: my $currentstring = '';
4176: if ($target eq 'web' || $target eq 'webgrade') {
4177: $currentstring = $token->[4];
4178: }
4179: return $currentstring;
4180: }
4181:
4182: sub end_wbr {
4183: my ($target,$token) = @_;
4184: my $currentstring = '';
4185: if ($target eq 'web' || $target eq 'webgrade') {
4186: $currentstring = $token->[2];
4187: }
4188: return $currentstring;
4189: }
4190:
4191: #-- <hideweboutput> tag
4192: sub start_hideweboutput {
4193: my ($target,$token) = @_;
4194: if ($target eq 'web' || $target eq 'webgrade') {
4195: &Apache::lonxml::startredirection();
4196: }
4197: return '';
4198: }
4199:
4200: sub end_hideweboutput {
4201: my ($target,$token) = @_;
4202: my $currentstring = '';
4203: if ($target eq 'web' || $target eq 'webgrade') {
4204: $currentstring = &Apache::lonxml::endredirection();
4205: }
4206: return '';
4207: }
4208:
4209:
4210: sub image_replication {
4211: my $src = shift;
4212: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4213: #replicates eps or ps
4214: my $epssrc = my $pssrc = $src;
4215: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4216: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4217: if (not -e $epssrc && not -e $pssrc) {
4218: my $result=&Apache::lonnet::repcopy($epssrc);
4219: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4220: }
4221: return '';
4222: }
4223:
4224:
4225:
4226: sub resize_image {
4227: my ($height_param, $width_param, $scaling,
4228: $parstack, $safeeval, $depth, $cis) = @_;
4229:
4230: # First apply the scaling...
4231:
4232: $height_param = $height_param * $scaling;
4233: $width_param = $width_param * $scaling;
4234:
4235: #do we have any specified LaTeX size of the picture?
4236: my $toget='TeXwidth';
4237: if ($cis) {
4238: $toget=lc($toget);
4239: }
4240: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4241: $safeeval,$depth,$cis);
4242: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4243: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4244: $safeeval,$depth,$cis);
4245: #do we have any specified web size of the picture?
4246: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4247: $depth,1);
4248: if ($TeXwidth) {
4249: my $old_width_param=$width_param;
4250: if ($TeXwidth=~/(\d+)\s*\%/) {
4251: $width_param = $1*$env{'form.textwidth'}/100;
4252: } else {
4253: $width_param = $TeXwidth;
4254: }
4255: if ($TeXheight) {
4256: $height_param = $TeXheight;
4257: } elsif ($old_width_param) {
4258: $height_param=$TeXwidth/$old_width_param*$height_param;
4259: }
4260: } elsif ($TeXheight) {
4261: $height_param = $TeXheight;
4262: if ($height_param) {
4263: $width_param = $TeXheight/$height_param*$width_param;
4264: }
4265: } elsif ($width) {
4266: my $old_width_param=$width_param;
4267: $width_param = $width*$scaling;
4268: if ($old_width_param) {
4269: $height_param=$width_param/$old_width_param*$height_param;
4270: }
4271: }
4272: if ($width_param > $env{'form.textwidth'}) {
4273: my $old_width_param=$width_param;
4274: $width_param =0.95*$env{'form.textwidth'};
4275: if ($old_width_param) {
4276: $height_param=$width_param/$old_width_param*$height_param;
4277: }
4278: }
4279:
4280: return ($height_param, $width_param);
4281: }
4282:
4283: sub image_size {
4284: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4285:
4286: #size of image from gif/jpg/jpeg/png
4287: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4288: if (-e $ressrc) {
4289: $src = $ressrc;
4290: }
4291: my $image = Image::Magick->new;
4292: my $current_figure = $image->Read($src);
4293: my $width_param = $image->Get('width');
4294: my $height_param = $image->Get('height');
4295: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4296: undef($image);
4297:
4298: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4299: $scaling, $parstack, $safeeval,
4300: $depth, $cis);
4301:
4302: return ($height_param, $width_param);
4303: }
4304:
4305: sub image_width {
4306: my ($height, $width) = &image_size(@_);
4307: return $width;
4308: }
4309: # Not yet 100% sure this is correct in all circumstances..
4310: # due to my uncertainty about mods to image_size.
4311: #
4312: sub image_height {
4313: my ($height, $width) = &image_size(@_);
4314: return $height;
4315: }
4316:
4317: sub get_eps_image {
4318: my ($src)=@_;
4319: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4320:
4321: # In order to prevent the substitution of the alt text, we need to
4322: # be sure the orig_src file is on system now so:
4323:
4324: if (! -e $orig_src) {
4325: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4326: }
4327: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4328: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg|svg)/i);
4329: $src=~s/\.(bmp|gif|png|jpg|jpeg|svg)$/\.eps/i;
4330: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4331: &Apache::lonxml::debug("Filelocation gives: $src");
4332: if (! -e $src) {
4333: &Apache::lonxml::debug("$src does not exist");
4334: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4335: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4336: #if replication failed try to find ps file
4337: $src=~s/\.eps$/\.ps/;
4338: &Apache::lonxml::debug("Now looking for $src");
4339: #if no ps file try to replicate it.
4340: my $didrepcopy = &Apache::lonnet::repcopy($src);
4341: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4342: if ( (not -e $src) ||
4343: ($didrepcopy ne 'ok')) {
4344: &Apache::lonxml::debug("Failed to find or replicate $src");
4345:
4346: #if replication failed try to produce eps file dynamically
4347: $src=~s/\.ps$/\.eps/;
4348: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4349: my $newsrc=$orig_src;
4350: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4351: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4352: print FILE ("$newsrc\n");
4353: close(FILE);
4354: }
4355: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4356: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4357: if ($sext ne "") { # Put the ext. back in to uniquify.
4358: $src =~ s/\.eps$/$sext.eps/;
4359: }
4360:
4361: }
4362:
4363: }
4364: } else {
4365: # If the postscript file has spaces in its name,
4366: # LaTeX will gratuitiously vomit. Therefore
4367: # queue such files for copy with " " replaced by "_".
4368: # printout.pm will know them by their .ps or .eps extensions.
4369: my $newsrc = $orig_src;
4370: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4371: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4372: print FILE "$src\n";
4373: close FILE;
4374: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4375: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4376: }
4377: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4378: $path =~ s/ /\_/g;
4379: $file =~ s/ /\_/g;
4380: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4381: return ($path.'/',$file);
4382: }
4383:
4384: sub eps_generation {
4385: my ($src,$file,$width_param) = @_;
4386: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4387: if (open(my $tmpfile,">>$filename")) {
4388: print $tmpfile "$src\n";
4389: close($tmpfile);
4390: }
4391: my $newsrc = $src;
4392: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4393: $newsrc=~s{/home/httpd/html/res}{};
4394: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4395: $newsrc=~s{/\./}{/};
4396: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4397: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4398: $newsrc=~s{/home/httpd/lonUsers}{};
4399: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4400: }
4401: if ($newsrc=~m{/userfiles/}) {
4402: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4403: } else {
4404: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4405: }
4406: }
4407:
4408: sub file_path {
4409: my $src=shift;
4410: my ($file,$path);
4411: if ($src =~ m!(.*)/([^/]*)$!) {
4412: $file = $2;
4413: $path = $1.'/';
4414: }
4415: return $file,$path;
4416: }
4417:
4418:
4419: sub recalc {
4420: my $argument = shift;
4421: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4422: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4423: my $value=$1;
4424: my $units=$2;
4425: if ($units eq 'cm') {
4426: $value*=10;
4427: } elsif ($units eq 'in') {
4428: $value*=25.4;
4429: } elsif ($units eq 'pc') {
4430: $value*=(25.4*12/72.27);
4431: } elsif ($units eq 'pt') {
4432: $value*=(25.4/72.27);
4433: }
4434: return $value.' mm';
4435: }
4436:
4437: sub LATEX_length {
4438: my $garbage=shift;
4439: $garbage=~s/^\s+$//;
4440: $garbage=~s/^\s+(\S.*)/$1/;#space before
4441: $garbage=~s/(.*\S)\s+$/$1/;#space after
4442: $garbage=~s/(\s)+/$1/;#only one space
4443: $garbage=~s/(\\begin\{([^\}]+)}|\\end\{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4444: $garbage=~s/(\$\_\{|\$\_|\$\^\{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4445: $garbage=~s/([^\\])\$/$1/g;#$
4446: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^\{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4447: $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;
4448: $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;
4449: $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;
4450: $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;
4451: $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;
4452: $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;
4453: $garbage=~s/(\\hat\{([^}]+)}|\\check\{([^}]+)}|\\dot\{([^}]+)}|\\breve\{([^}]+)}|\\acute\{([^}]+)}|\\ddot\{([^}]+)}|\\grave\{([^}]+)}|\\tilde\{([^}]+)}|\\mathring\{([^}]+)}|\\bar\{([^}]+)}|\\vec\{([^}]+)})/$1/g;
4454: #remove some other LaTeX command
4455: $garbage=~s|\\(\w+)\\|\\|g;
4456: $garbage=~s|\\(\w+)(\s*)|$2|g;
4457: $garbage=~s|\+|11|g;
4458: my $value=length($garbage);
4459: return $value;
4460: }
4461:
4462:
4463: sub align_latex_image {
4464: my ($align, $latex_rendering, $image, $width, $height) = @_;
4465: my $currentstring; # The 1/2 wrapped image.
4466: my $closure; # The closure of the wrappage.
4467:
4468: # if it's none just return it back
4469: if ($latex_rendering eq 'none') {
4470: return ($image,'');
4471: }
4472:
4473: # If there's an alignment specification we need to honor it here.
4474: # For the horizontal alignments, we will also honor the
4475: # value of the latex specfication. The default is parbox,
4476: # and that's used for illegal values too.
4477: #
4478: # Even though we set a default alignment value, the user
4479: # could have given us an illegal value. In that case we
4480: # just use the default alignment of bottom..
4481: $currentstring = '';
4482: if ($align eq "top") {
4483: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4484: $closure = '}';
4485: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4486: my $offset = $height/2;
4487: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4488: $closure = '}';
4489: } elsif ($align eq "left") {
4490: if ($latex_rendering eq "parpic") {
4491: $currentstring .= '\parpic[l]{'.$image;
4492: $closure = '}';
4493: } elsif ($latex_rendering eq "parbox") {
4494: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4495: .$image;
4496: $closure = '\end{minipage}';
4497: } elsif ($latex_rendering eq "wrapfigure"
4498: || $latex_rendering ne 'none') { # wrapfig render
4499: $currentstring .=
4500: '\begin{wrapfigure}{l}{'.$width.'mm}'
4501: .'\scalebox{1.0}{'.$image;
4502: $closure = '}\end{wrapfigure}';
4503: }
4504: } elsif ($align eq "right") {
4505: if ($latex_rendering eq "parpic") {
4506: $currentstring .= '\parpic[r]{'.$image;
4507: $closure = '}';
4508: } elsif ($latex_rendering eq "parbox") {
4509: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4510: .$image;
4511: $closure = '\end{minipage}';
4512: } elsif ($latex_rendering eq "wrapfigure"
4513: || $latex_rendering ne 'none') { # wrapfig render
4514: $currentstring .=
4515: '\begin{wrapfigure}{r}{'.$width.'mm}'
4516: .'\scalebox{1.0}{'.$image;
4517: $closure = '}\end{wrapfigure}';
4518: }
4519: } else { # Bottom is also default.
4520: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4521: $currentstring .= "{$image";
4522: $closure = '}';
4523: }
4524: return ($currentstring, $closure);
4525: }
4526:
4527:
4528: sub is_inside_of {
4529: my ($tagstack, $tag) = @_;
4530: my @stack = @$tagstack;
4531: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4532: if ($stack[$i] eq $tag) {
4533: return 1;
4534: }
4535: }
4536: return 0;
4537: }
4538:
4539:
4540: #
4541: # This sub provides the typical LaTeX prefix matter for tex output:
4542: #
4543: sub latex_header {
4544: my ($mode) = @_;
4545: my $currentstring = '';
4546:
4547: $currentstring .=
4548: "\n% &Apache::lonxml::londefdef \n" .
4549: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4550: if (($env{'form.latex_type'}=~'batchmode') ||
4551: (!$env{'request.role.adv'}) ||
4552: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4553: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4554: '\renewcommand{\deg}{$^{\circ}$}'.
4555: '\usepackage{multirow}'."\n".
4556: '\usepackage{longtable}'."\n".
4557: '\usepackage{textcomp}'."\n".
4558: '\usepackage{makeidx}'."\n".
4559: '\usepackage[dvips]{graphicx}'."\n".
4560: '\usepackage{wrapfig}'."\n".
4561: '\usepackage{picins}'."\n".
4562: '\usepackage[T1]{fontenc}'."\n".
4563: '\usepackage{lmodern}'."\n".
4564: '\usepackage[postscript]{ucs}'."\n".
4565: '\usepackage[utf8x]{inputenc}'."\n".
4566: '\usepackage{pifont}'."\n".
4567: '\usepackage{latexsym}'."\n".
4568: '\usepackage{epsfig}'."\n".
4569: '\usepackage{xtab}'."\n".
4570: '\usepackage{tabularx}'."\n".
4571: '\usepackage{booktabs}'."\n".
4572: '\usepackage{array}'."\n".
4573: '\usepackage{colortbl}'."\n".
4574: '\usepackage{xcolor}'."\n".
4575: '\usepackage{calc}'."\n".
4576: '\usepackage{amsmath}'."\n".
4577: '\usepackage{soul}'."\n".
4578: '\usepackage{amssymb}'."\n".
4579: '\usepackage{amsfonts}'."\n".
4580: '\usepackage{amsthm}'."\n".
4581: '\usepackage{amscd}'."\n".
4582: '\usepackage{actuarialangle}'."\n";
4583: if($env{'form.pdfFormFields'} eq 'yes') {
4584: $currentstring .= '\usepackage{hyperref}'.
4585: '\usepackage{eforms}'.
4586: '\usepackage{tabularx}';
4587: }
4588:
4589: $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}}'.
4590: '\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}}';
4591: $currentstring .= '\begin{document}';
4592:
4593: return $currentstring;
4594:
4595: }
4596:
4597: sub clean_docs_httpref {
4598: my ($href,$docuri,$cdom,$cnum) = @_;
4599: if ($docuri eq '') {
4600: $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
4601: }
4602: if ($cdom eq '') {
4603: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4604: }
4605: if ($cnum eq '') {
4606: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4607: }
4608: my $cleanhref;
4609: if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/)(.+/)[^/]+$}) {
4610: my $prefix = $1;
4611: my $relpath = $2;
4612: my ($hrefpath,$fname);
4613: if ($href =~ m{^/}) {
4614: if ($href =~ m{^\Q$prefix\E(.+/)([^/]+)$}) {
4615: $hrefpath = $1;
4616: $fname = $2;
4617: } else {
4618: return $cleanhref;
4619: }
4620: } else {
4621: if ($href =~ m{/}) {
4622: (my $path,$fname) = ($href =~ m{^(.*)/([^/]*)$});
4623: $hrefpath = $relpath.$path;
4624: if ($path eq '') {
4625: $hrefpath =~ s{/$}{};
4626: }
4627: } else {
4628: $fname = $href;
4629: $hrefpath = $relpath;
4630: $hrefpath =~ s{/$}{};
4631: }
4632: }
4633: if ($fname ne '') {
4634: my $cleanrelpath;
4635: foreach my $dir (split(/\//,$hrefpath)) {
4636: next if ($dir eq '.');
4637: if ($dir eq '..') {
4638: $cleanrelpath =~ s{([^/]+/)$}{};
4639: } else {
4640: $cleanrelpath .= $dir.'/';
4641: }
4642: }
4643: if ($cleanrelpath ne '') {
4644: $cleanhref = $prefix.$cleanrelpath.$fname;
4645: } else {
4646: $cleanhref = $prefix.$fname;
4647: }
4648: }
4649: }
4650: return $cleanhref;
4651: }
4652:
4653: =pod
4654:
4655: =head1 NAME
4656:
4657: Apache::londefdef.pm
4658:
4659: =head1 SYNOPSIS
4660:
4661: Tags Default Definition Module
4662:
4663: This is part of the LearningOnline Network with CAPA project
4664: described at http://www.lon-capa.org.
4665:
4666:
4667: =head1 NOTABLE SUBROUTINES
4668:
4669: =over
4670:
4671: =item start_hideweboutput()
4672:
4673: =item end_hideweboutput()
4674:
4675: =item image_replication()
4676:
4677: =item resize_image()
4678:
4679: Get correct sizing parameter for an image given
4680: it's initial ht. and wid. This allows sizing of
4681: images that are generated on-the-fly (e.g. gnuplot)
4682: as well as serving as a utility for image_size.
4683:
4684: Parameter:
4685: height_param
4686: width_param - Initial picture dimensions.
4687: scaling - A scale factor.
4688: parstack, - the current stack of tag attributes
4689: from the xml parser
4690: safeeval, - pointer to the safespace
4691: depth, - from what level in the stack to look for attributes
4692: (assumes -1 if unspecified)
4693: cis - look for attrubutes case insensitively
4694: (assumes false)
4695:
4696: Returns:
4697: height, width - new dimensions.
4698:
4699: =item image_size()
4700:
4701: =item image_width()
4702:
4703: =item image_height()
4704:
4705: =item get_eps_image()
4706:
4707: =item eps_generation()
4708:
4709: =item file_path()
4710:
4711: =item recalc()
4712:
4713: Converts a measurement in to mm from any of
4714: the other valid LaTeX units of measure.
4715: If the units of measure are missing from the
4716: parameter, it is assumed to be in and returned
4717: with mm units of measure
4718:
4719: =item LATEX_length()
4720:
4721: =item align_latex_image()
4722:
4723: Wrap image 'stuff' inside of the LaTeX required to implement
4724: alignment:
4725: align_tex_image(align, latex_rendering, image)
4726: Where:
4727: align - The HTML alignment specification.
4728: latex_rendering - rendering hint for latex.
4729: image - The LaTeX needed to insert the image itsef.
4730: width,height - dimensions of the image.
4731: Returns:
4732: The 1/2 wrapped image and the stuff required to close the
4733: wrappage. This allows e.g. randomlabel to insert more stuff
4734: into the closure.
4735:
4736:
4737: =item is_inside_of($tagstack, $tag)
4738: This sub returns true if the current state of Xml processing is inside of the tag.
4739: Parameters:
4740: tagstack - The tagstack from the parser.
4741: tag - The tag (without the <>'s.).
4742: Sample usage:
4743: if (is_inside_of($tagstack "table")) {
4744: I'm in a table....
4745: }
4746:
4747: =item clean_docs_httpref($href,$docuri,$cdom,$cnum)
4748: HTML pages uploaded to a course which contain dependencies either from iframes,
4749: javascript files or objects (FlashPlayerSwf, MediaSrc, XMPSrc, ConfigurationSrc,
4750: and PosterImageSrc) for which dependency is another file uploaded to the same
4751: course.
4752:
4753: Required input:
4754: href - dependency (either a relative URL, or an absolute URL)
4755: Optional inputs:
4756: docuri - URL of HTML page containing the dependency
4757: cdom - Course domain
4758: cnum - CourseID
4759:
4760: Output:
4761: returns an absolute URL constructed from the href provided, and the calling context.
4762: (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
4763: /uploaded/$cdom/$cnum/supplemental/).
4764:
4765: =back
4766:
4767: =cut
4768:
4769:
4770: 1;
4771: __END__
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