1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.461 2016/08/13 19:02:00 raeburn Exp $
5: #
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into
30: # binary executable programs or libraries distributed by the
31: # Michigan State University (the "Licensee"), but any binaries so
32: # distributed are hereby licensed only for use in the context
33: # of a program or computational system for which the Licensee is the
34: # primary author or distributor, and which performs substantial
35: # additional tasks beyond the translation of (La)TeX into HTML.
36: # The C source of the Code may not be distributed by the Licensee
37: # to any other parties under any circumstances.
38: #
39:
40: package Apache::londefdef;
41:
42: use Apache::lonnet;
43: use strict;
44: use Apache::lonxml;
45: use Apache::lontable;
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::lonlocal;
50: use Apache::loncommon();
51: use Apache::Constants qw(:common);
52: use File::Basename;
53: use LONCAPA();
54: # use Data::Dumper;
55:
56: BEGIN {
57:
58: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','style','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
59:
60: }
61:
62:
63: sub initialize_londefdef {
64: $Apache::londefdef::TD_redirection=0;
65: @Apache::londefdef::table = ();
66: $Apache::londefdef::select=0;
67: undef(@Apache::londefdef::description);
68: @Apache::londefdef::DD=(0);
69: @Apache::londefdef::DT=(0);
70: @Apache::londefdef::seenDT=(0);
71: $Apache::londefdef::list_index=0;
72: undef($Apache::londefdef::head);
73: undef($Apache::londefdef::title);
74: }
75:
76: #======================= TAG SUBROUTINES =====================
77: #-- <output>
78: sub start_output {
79: my ($target) = @_;
80: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
81: return '';
82: }
83: sub end_output {
84: my ($target) = @_;
85: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
86: return '';
87: }
88: #-- <m> tag
89: sub start_m {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
91: my $currentstring = '';
92: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
93: if ($target eq 'web' || $target eq 'analyze') {
94: &Apache::lonxml::debug("M is starting with:$inside:");
95: if (!($inside =~ /^\s*\$.*\$\s*$/ || $inside =~ /^\s*\\[([].*\\[)\]]\s*$/)) {
96: # Non-math LaTeX will not be rendered correctly with MathJax
97: # and it should be avoided anyway.
98: # On top of that, MathJax will render math without $, but
99: # it will fail with tth. This is worth a warning.
100: # (even though some people might just use latex for printing)
101: &Apache::lonxml::warning(&mt("Missing \$ in <m>."));
102: }
103: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
104: if ($eval eq 'on') {
105: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
106: #&Apache::lonxml::debug("M is evaluated to:$inside:");
107: }
108: my $tex = $inside;
109: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
110: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
111: if ($Apache::lontexconvert::errorstring) {
112: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
113: $tex = &HTML::Entities::encode($tex,'<>&"');
114: my ($linenumber) =
115: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
116: if (defined($linenumber)) {
117: my @tex=split("\n",$tex);
118: $tex[$linenumber]='<b><font color="red">'.
119: $tex[$linenumber].'</font></b>';
120: $tex=join("\n",@tex);
121: }
122: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
123: $Apache::lontexconvert::errorstring='';
124: }
125: #&Apache::lonxml::debug("M is ends with:$currentstring:");
126: $Apache::lonxml::post_evaluate=0;
127: } elsif ($target eq 'tex') {
128:
129: $currentstring = $inside;
130: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
131: if ($eval eq 'on') {
132: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
133: }
134: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
135: # detect simple math mode entry exits, and convert them
136: # to use \ensuremath ... unless there's a \verb inside.
137: if (! ($currentstring=~/\\verb/)) {
138: if ($currentstring=~/^\s*\$[^\$].*\$\s*$/) {
139: $currentstring=~s/^(\s*)\$/$1/;
140: $currentstring=~s/\$(\s*)$/$1/;
141: $currentstring='\ensuremath{'.$currentstring.'}';
142: }
143: }
144: $Apache::lonxml::post_evaluate=0;
145: }
146: return $currentstring;
147: }
148:
149: sub end_m {
150: my ($target,$token) = @_;
151: my $currentstring = '';
152: if ($target eq 'tex') {
153: $currentstring = "";
154: }
155: return $currentstring;
156: }
157:
158: sub start_tthoption {
159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
160: my $result;
161: if ($target eq 'web' || $target eq 'webgrade') {
162: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
163: $style);
164: $inside=~s/^\s*//;
165: if ($env{'browser.mathml'}) {
166: &tth::ttmoptions($inside);
167: } else {
168: &tth::tthoptions($inside);
169: }
170: }
171: return $result;
172: }
173:
174: sub end_tthoption {
175: my ($target,$token) = @_;
176: my $result;
177: return $result;
178: }
179:
180: #-- <html> tag (end tag optional)
181: sub start_html {
182: my ($target,$token) = @_;
183: my $currentstring = '';
184: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
185: # start_body() takes care of emitting the <html>
186: } elsif ($target eq 'tex') {
187:
188: $currentstring .= &latex_header();
189: }
190: return $currentstring;
191: }
192:
193: sub end_html {
194: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
195: my $currentstring = '';
196: if ($target eq 'web' || $target eq 'webgrade') {
197: # end_body takes care of the </html>
198: }
199: return $currentstring;
200: }
201:
202: #-- <head> tag (end tag optional)
203: sub start_head {
204: my ($target,$token) = @_;
205: my $currentstring = '';
206: if ($target eq 'web' || $target eq 'webgrade') {
207: &Apache::lonxml::startredirection();
208: }
209: return $currentstring;
210: }
211:
212: sub end_head {
213: my ($target,$token) = @_;
214: my $currentstring = '';
215: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
216: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
217: # in case there is a </head> but no <head>
218: if ($Apache::lonxml::redirection) {
219: $Apache::londefdef::head = &Apache::lonxml::endredirection();
220: }
221: }
222: return $currentstring;
223: }
224:
225: #-- <map> tag (end tag required)
226: sub start_map {
227: my ($target,$token) = @_;
228: my $currentstring = '';
229: if ($target eq 'web' || $target eq 'webgrade') {
230: $currentstring = $token->[4];
231: }
232: return $currentstring;
233: }
234:
235: sub end_map {
236: my ($target,$token) = @_;
237: my $currentstring = '';
238: if ($target eq 'web' || $target eq 'webgrade') {
239: $currentstring = $token->[2];
240: }
241: return $currentstring;
242: }
243:
244: #-- <select> tag (end tag required)
245: sub start_select {
246: my ($target,$token) = @_;
247: my $currentstring = '';
248: if ($target eq 'web' || $target eq 'webgrade') {
249: $currentstring = $token->[4];
250: } elsif ($target eq 'tex') {
251: $Apache::londefdef::select=0;
252: }
253: return $currentstring;
254: }
255:
256: sub end_select {
257: my ($target,$token) = @_;
258: my $currentstring = '';
259: if ($target eq 'web' || $target eq 'webgrade') {
260: $currentstring = $token->[2];
261: }
262: return $currentstring;
263: }
264:
265: #-- <option> tag (end tag optional)
266: sub start_option {
267: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
268: my $currentstring = '';
269: if ($target eq 'web' || $target eq 'webgrade') {
270: $currentstring = $token->[4];
271: } elsif ($target eq 'tex') {
272: $Apache::londefdef::select++;
273: if ($Apache::londefdef::select == 1) {
274: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
275: } else {
276: $currentstring='\keephidden{';
277: }
278: }
279: return $currentstring;
280: }
281:
282: sub end_option {
283: my ($target,$token) = @_;
284: my $currentstring = '';
285: if ($target eq 'web' || $target eq 'webgrade') {
286: $currentstring = $token->[2];
287: } elsif ($target eq 'tex') {
288: $currentstring='}';
289: }
290: return $currentstring;
291: }
292:
293: #-- <input> tag (end tag forbidden)
294: sub start_input {
295: my ($target,$token) = @_;
296: my $currentstring = '';
297: if ($target eq 'web' || $target eq 'webgrade') {
298: $currentstring = $token->[4];
299: }
300: return $currentstring;
301: }
302:
303: sub end_input {
304: my ($target,$token) = @_;
305: my $currentstring = '';
306: if ($target eq 'web' || $target eq 'webgrade') {
307: $currentstring = $token->[2];
308: }
309: return $currentstring;
310: }
311:
312: #-- <textarea> tag (end tag required)
313: sub start_textarea {
314: my ($target,$token) = @_;
315: my $currentstring = '';
316: if ($target eq 'web' || $target eq 'webgrade') {
317: $currentstring = $token->[4];
318: }
319: return $currentstring;
320: }
321:
322: sub end_textarea {
323: my ($target,$token) = @_;
324: my $currentstring = '';
325: if ($target eq 'web' || $target eq 'webgrade') {
326: $currentstring = $token->[2];
327: }
328: return $currentstring;
329: }
330:
331: #-- <form> tag (end tag required)
332: sub start_form {
333: my ($target,$token) = @_;
334: my $currentstring = '';
335: if ($target eq 'web' || $target eq 'webgrade') {
336: $currentstring = $token->[4];
337: }
338: return $currentstring;
339: }
340:
341: sub end_form {
342: my ($target,$token) = @_;
343: my $currentstring = '';
344: if ($target eq 'web' || $target eq 'webgrade') {
345: $currentstring = $token->[2];
346: }
347: return $currentstring;
348: }
349:
350: #-- <title> tag (end tag required)
351: sub start_title {
352: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
353: my $currentstring = '';
354: if ($target eq 'web' || $target eq 'webgrade') {
355: $Apache::londefdef::title =
356: &Apache::lonxml::get_all_text('/title',$parser,$style);
357: } elsif ($target eq 'tex') {
358: $currentstring .= '\keephidden{Title of the document: '
359: }
360: if ($target eq 'meta') {
361: $currentstring='<title>';
362: &start_output($target);
363: }
364: return $currentstring;
365: }
366:
367: sub end_title {
368: my ($target,$token) = @_;
369: my $currentstring = '';
370: if ($target eq 'web' || $target eq 'webgrade') {
371: # start_title takes care of swallowing the title
372: } elsif ($target eq 'tex') {
373: $currentstring .= '}';
374: }
375: if ($target eq 'meta') {
376: &end_output($target);
377: $currentstring='</title>';
378: }
379: return $currentstring;
380: }
381:
382: #-- <meta> tag (end tag forbidden)
383: sub start_meta {
384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
385: my $currentstring = '';
386: if ($target eq 'web' || $target eq 'webgrade') {
387: my $args='';
388: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
389: if ($args eq '') {
390: &Apache::lonxml::get_all_text("/meta",$parser,$style);
391: } else {
392: $currentstring = $token->[4];
393: }
394: if ($env{'form.grade_imsexport'}) {
395: $currentstring = '';
396: }
397: } elsif ($target eq 'meta') {
398: unless (&Apache::lonxml::get_param
399: ('http-equiv',$parstack,$safeeval,undef,1)) {
400: my $name=$token->[2]->{'name'};
401: $name=~tr/A-Z/a-z/;
402: $name=~s/\s/\_/gs;
403: $name=~s/\W//gs;
404: if ($name) {
405: $currentstring='<'.$name;
406: my $display=&Apache::lonxml::get_param
407: ('display',$parstack,$safeeval,undef,1);
408: if ($display) {
409: $display=~s/\"/\'/g;
410: $currentstring.=' display="'.$display.'"';
411: }
412: $currentstring.='>'.
413: &Apache::lonxml::get_param
414: ('content',$parstack,$safeeval,undef,1).
415: '</'.$name.'>';
416: }
417: my $display=&Apache::lonxml::get_param
418: ('display',$parstack,$safeeval,undef,1);
419: if ($display) {
420: $display=&HTML::Entities::encode($display,'<>&"');
421: $currentstring.='<'.$name.'.display>'.$display.
422: '</'.$name.'.display>';
423: }
424: }
425: } elsif ($target eq 'tex') {
426: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
427: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
428: if ((not defined $content) && (not defined $name)) {
429: &Apache::lonxml::startredirection();
430: }
431: } elsif ($target eq 'edit') {
432: $currentstring .= &Apache::edit::tag_start($target,$token);
433: $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
434: $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
435: $currentstring .= &Apache::edit::end_row();
436: } elsif ($target eq 'modified') {
437: my $constructtag =
438: &Apache::edit::get_new_args($token,$parstack,$safeeval,
439: 'name','content');
440: if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
441: }
442: return $currentstring;
443: }
444:
445: sub end_meta {
446: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
447: my $currentstring = '';
448: if ($target eq 'web' || $target eq 'webgrade') {
449: my $args='';
450: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
451: if ($args ne '') {
452: $currentstring = $token->[4];
453: }
454: } elsif ($target eq 'tex') {
455: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
456: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
457: if ((not defined $content) && (not defined $name)) {
458: &Apache::lonxml::endredirection();
459: }
460: }
461: return $currentstring;
462: }
463:
464: sub insert_meta {
465: return '
466: <meta />';
467: }
468:
469: #-- <start> tag
470: sub start_style {
471: my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
472: my $currentstring = '';
473:
474: if ($target eq 'tex') {
475: Apache::lonxml::startredirection();
476: } else {
477: $currentstring = $token->[4];
478: }
479:
480: return $currentstring;
481: }
482:
483: sub end_style {
484: my ($target, $token, $tagstack, $parstack, $parser, $safeeval) = @_;
485: my $currentstring = '';
486:
487: if ($target eq 'tex') {
488: Apache::lonxml::endredirection();
489: } else {
490: $currentstring = $token->[2];
491: }
492: return $currentstring;
493: }
494:
495: # accessrule
496: sub start_accessrule {
497: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
498: my $currentstring = '';
499: my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
500: my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
501: my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
502: my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
503:
504: my ($dom,$crs,$sec,$separator);
505: if ($type eq 'user') {
506: ($dom,$crs,$sec)=split(m{/},$realm);
507: $crs = &LONCAPA::clean_username($crs);
508: $separator = '/';
509: } else {
510: ($dom,$crs,$sec)=split(/\_/,$realm);
511: $crs = &LONCAPA::clean_courseid($crs);
512: $separator = '_';
513: }
514: $dom = &LONCAPA::clean_domain($dom);
515:
516: $sec =~s/\W//;
517: $realm = $dom;
518: if ($crs =~ /\S/) { $realm .= $separator.$crs; }
519: if ($sec =~ /\S/) { $realm .= $separator.$sec; }
520: $role=~s/\W//g;
521:
522: if ($target eq 'web') {
523: my $args='';
524: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
525: if ($args eq '') {
526: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
527: } else {
528: $currentstring = $token->[4];
529: }
530: }
531: if ($target eq 'meta') {
532: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
533: }
534: return $currentstring;
535: }
536:
537: sub end_accessrule {
538: my ($target,$token,$tagstack,$parstack,$parser) = @_;
539: my $currentstring = '';
540: if ($target eq 'web') {
541: my $args='';
542: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
543: if ($args ne '') {
544: $currentstring = $token->[4];
545: }
546: }
547: return $currentstring;
548: }
549:
550: sub generate_css_links {
551: my $links;
552: my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
553: if ($css_href =~ /\S/) {
554: &Apache::lonxml::extlink($css_href);
555: $links .=
556: '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
557: }
558: return $links;
559: }
560:
561: #-- <body> tag (end tag required)
562: sub start_body {
563: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
564: my $currentstring = '';
565:
566: if ($target eq 'web' || $target eq 'webgrade') {
567: if ($Apache::lonhomework::parsing_a_problem) {
568: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
569: return '';
570: }
571:
572: if (&is_inside_of($tagstack, "head")) {
573: &end_head(@_);
574: }
575:
576: my $extra_head = &generate_css_links();
577:
578: # Breadcrumbs
579: &Apache::lonhtmlcommon::clear_breadcrumbs();
580: if ($env{'request.state'} eq 'construct') {
581: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
582: &Apache::lonhtmlcommon::add_breadcrumb({
583: 'text' => 'Authoring Space',
584: 'href' => &Apache::loncommon::authorspace($url),
585: });
586: &Apache::lonhtmlcommon::add_breadcrumb({
587: 'text' => 'HTML Editor',
588: 'href' => '',
589: });
590: # breadcrumbs (and tools) will be created
591: # in start_page->bodytag->innerregister
592: } else {
593: # FIXME Where are we?
594: }
595:
596: my $args = {'add_entries' => $token->[2],
597: 'force_register' => 1,};
598: if ($target eq 'web') {
599: $args->{'print_suppress'} = 1;
600: if ($env{'request.use_absolute'}) {
601: $args->{'use_absolute'} = $env{'request.use_absolute'};
602: }
603: }
604: $currentstring =
605: &Apache::loncommon::start_page($Apache::londefdef::title,
606: $Apache::londefdef::head
607: .$extra_head,$args);
608: my $header = '';
609: if ($env{'request.state'} ne 'published' &&
610: $env{'request.state'} ne 'construct') {
611: $header=&Apache::lonmenu::constspaceform();
612: }
613: if ($env{'request.state'} ne 'published') {
614: unless ($env{'form.inhibitmenu'} eq 'yes') {
615: $header.=&edit_controls();
616: }
617: }
618: if ($env{'request.state'} eq 'construct') {
619: unless ($env{'form.inhibitmenu'} eq 'yes') {
620: $currentstring.=&Apache::loncommon::head_subbox(
621: &Apache::loncommon::CSTR_pageheader()
622: .$header);
623: }
624: } elsif ($env{'request.state'} eq 'edit') {
625: $currentstring.=&Apache::loncommon::head_subbox($header);
626: }
627: $currentstring.=&Apache::lonxml::message_location();
628: } elsif ($target eq 'tex') {
629: $currentstring = ''; # '\begin{document}' is in header.
630: }
631:
632: return $currentstring;
633: }
634:
635: sub edit_controls {
636: my ($nochgview) = @_;
637: my $result .= '
638: <form method="post" action="">
639: <div class="LC_edit_problem_header">';
640: unless ($nochgview) {
641: $result .= '
642: <div class="LC_edit_problem_header_row1">'.
643: &Apache::lonxml::renderingoptions().'
644: <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
645: </div>';
646: }
647: $result .= '
648: <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
649: if ($env{'browser.type'} ne 'explorer' || $env{'browser.version'} > 9) {
650: my $uri = $env{'request.uri'};
651: my $daxeurl = '/daxepage'.$uri;
652: $result .= '<input type="button" value="'.&mt('Edit with Daxe').'" '.
653: 'onclick="window.open(\''.$daxeurl.'\',\'_blank\');" />';
654: }
655: if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
656: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
657: if ($url =~ /\.html?$/i) {
658: my ($cdom,$cnum);
659: if ($env{'request.course.id'}) {
660: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
661: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
662: if ($env{'request.filename'} =~ m{/userfiles/supplemental/default|\d+/}) {
663: if (&Apache::lonnet::is_course_upload($env{'request.filename'},
664: $cnum,$cdom)) {
665: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
666: ['folderpath','title']);
667: }
668: }
669: }
670: my ($symb,$itemtitle,$displayfile,$caller);
671: if ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/}) {
672: $itemtitle = &mt('Syllabus');
673: $caller = "/public/$cdom/$cnum/syllabus";
674: } else {
675: $caller = $url;
676: ($symb,$itemtitle,$displayfile) =
677: &Apache::lonxml::get_courseupload_hierarchy($url,
678: $env{'form.folderpath'},
679: $env{'form.title'});
680: }
681: if (($symb ne '') || ($env{'httpref.'.$url} ne '') ||
682: ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/})) {
683: $result .= (' ' x 3).
684: &Apache::lonhtmlcommon::dependencies_button()."\n".
685: &Apache::lonhtmlcommon::dependencycheck_js($symb,
686: $itemtitle,$url,$env{'form.folderpath'},$caller)."\n";
687: }
688: }
689: }
690: $result .= '</div>
691: </div>
692: </form>
693: ';
694: return $result;
695: }
696:
697: sub end_body {
698: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
699: my $currentstring = &end_p(); # Close off unclosed <p>
700: if ($target eq 'web' || $target eq 'webgrade') {
701: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
702: } elsif ($target eq 'tex') {
703: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
704: }
705: return $currentstring;
706: }
707:
708: # \begin{center} causes a new paragprah spacing that looks odd inside
709: # of a table cell. Same at the end of a \center but with a slightly
710: # larger space .. hence center_correction and center_end_correction.
711: #
712: sub center_correction { return '\vspace*{-6 mm}'; }
713: sub center_end_correction { return '\vspace*{-7 mm}'; }
714:
715: #-- <center> tag (end tag required)
716: sub start_center {
717: my ($target,$token,$tagstack) = @_;
718: my $currentstring = &end_p(); # Close off any prior para.
719: if ($target eq 'web' || $target eq 'webgrade') {
720: $currentstring .= $token->[4];
721: } elsif ($target eq 'tex') {
722: if (&is_inside_of($tagstack, "table")) {
723: $currentstring .= ¢er_correction();
724: }
725: $currentstring .= '\begin{center}';
726: }
727: return $currentstring;
728: }
729:
730: sub end_center {
731: my ($target,$token,$tagstack) = @_;
732: my $currentstring = '';
733: if ($target eq 'web' || $target eq 'webgrade') {
734: $currentstring = $token->[2];
735: } elsif ($target eq 'tex') {
736: $currentstring = '\end{center}';
737: if (&is_inside_of($tagstack, "table")) {
738: $currentstring .= ¢er_end_correction();
739: }
740: }
741: return $currentstring;
742: }
743:
744: #-- <b> tag (end tag required)
745: # NOTE: In TeX mode disables internal <p>
746: sub start_b {
747: my ($target,$token) = @_;
748: my $currentstring = '';
749: if ($target eq 'web' || $target eq 'webgrade') {
750: $currentstring = $token->[4];
751: } elsif ($target eq 'tex') {
752: &disable_para();
753: $currentstring .= '\textbf{';
754: }
755: return $currentstring;
756: }
757:
758: sub end_b {
759: my ($target,$token) = @_;
760: my $currentstring = '';
761: if ($target eq 'web' || $target eq 'webgrade') {
762: $currentstring = $token->[2];
763: } elsif ($target eq 'tex') {
764: &enable_para();
765: $currentstring = '}';
766: }
767: return $currentstring;
768: }
769:
770: #-- <strong> tag (end tag required)
771: # NOTE: in TeX mode disables internal <p>
772: sub start_strong {
773: my ($target,$token) = @_;
774: my $currentstring = '';
775: if ($target eq 'web' || $target eq 'webgrade') {
776: $currentstring = $token->[4];
777: } elsif ($target eq 'tex') {
778: &disable_para();
779: $currentstring = '\textbf{';
780: }
781: return $currentstring;
782: }
783:
784: sub end_strong {
785: my ($target,$token) = @_;
786: my $currentstring = '';
787: if ($target eq 'web' || $target eq 'webgrade') {
788: $currentstring = $token->[2];
789: } elsif ($target eq 'tex') {
790: &enable_para();
791: $currentstring = '}';
792: }
793: return $currentstring;
794: }
795:
796: #-- <h1> tag (end tag required)
797: sub start_h1 {
798: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
799: my $currentstring = &end_p(); # Close off any prior para.
800: if ($target eq 'web' || $target eq 'webgrade') {
801: $currentstring .= $token->[4];
802: } elsif ($target eq 'tex') {
803: my $pre;
804: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
805: if ($align eq 'center') {
806: $pre='\begin{center}';
807: } elsif ($align eq 'left') {
808: $pre='\rlap{';
809: } elsif ($align eq 'right') {
810: $pre=' \hfill \llap{';
811: }
812: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
813: if (not defined $TeXsize) {$TeXsize="large";}
814: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
815: } elsif ($target eq 'meta') {
816: $currentstring.='<subject>';
817: &start_output($target);
818: }
819: return $currentstring;
820: }
821:
822: sub end_h1 {
823: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
824: my $currentstring = '';
825: if ($target eq 'web' || $target eq 'webgrade') {
826: $currentstring .= $token->[2];
827: } elsif ($target eq 'tex') {
828: my $post='\vskip 0 mm ';
829: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
830: if ($align eq 'center') {
831: $post='\end{center}';
832: } elsif ($align eq 'left') {
833: $post='} \hfill'.'\vskip 0 mm ';
834: } elsif ($align eq 'right') {
835: $post='}'.'\vskip 0 mm ';
836: }
837: $currentstring .= '}}'.$post;
838: } elsif ($target eq 'meta') {
839: &end_output($target);
840: $currentstring='</subject>';
841: }
842: return $currentstring;
843: }
844:
845: #-- <h2> tag
846: sub start_h2 {
847: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
848: my $currentstring = &end_p(); # Close off any prior para.
849: if ($target eq 'web' || $target eq 'webgrade') {
850: $currentstring .= $token->[4];
851: } elsif ($target eq 'tex') {
852: my $pre;
853: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
854: if ($align eq 'center') {
855: $pre='\begin{center}';
856: } elsif ($align eq 'left') {
857: $pre='\rlap{';
858: } elsif ($align eq 'right') {
859: $pre=' \hfill \llap{';
860: }
861: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
862: if (not defined $TeXsize) {$TeXsize="large";}
863: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
864: }
865: return $currentstring;
866: }
867:
868: sub end_h2 {
869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
870: my $currentstring = '';
871: if ($target eq 'web' || $target eq 'webgrade') {
872: $currentstring .= $token->[2];
873: } elsif ($target eq 'tex') {
874: my $post='\vskip 0 mm ';
875: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
876: if ($align eq 'center') {
877: $post='\end{center}';
878: } elsif ($align eq 'left') {
879: $post='} \hfill'.'\vskip 0 mm ';
880: } elsif ($align eq 'right') {
881: $post='}'.'\vskip 0 mm ';
882: }
883: $currentstring .= '}}'.$post;
884: }
885: return $currentstring;
886: }
887:
888: #-- <h3> tag
889: sub start_h3 {
890: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
891: my $currentstring = &end_p(); # Close off any prior para.
892: if ($target eq 'web' || $target eq 'webgrade') {
893: $currentstring .= $token->[4];
894: } elsif ($target eq 'tex') {
895: my $pre;
896: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
897: if ($align eq 'center') {
898: $pre='\begin{center}';
899: } elsif ($align eq 'left') {
900: $pre='\rlap{';
901: } elsif ($align eq 'right') {
902: $pre=' \hfill \llap{';
903: }
904: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
905: if (not defined $TeXsize) {$TeXsize="large";}
906: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
907: }
908: return $currentstring;
909: }
910:
911: sub end_h3 {
912: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
913: my $currentstring = '';
914: if ($target eq 'web' || $target eq 'webgrade') {
915: $currentstring .= $token->[2];
916: } elsif ($target eq 'tex') {
917: my $post='\vskip 0 mm ';
918: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
919: if ($align eq 'center') {
920: $post='\end{center}';
921: } elsif ($align eq 'left') {
922: $post='} \hfill'.'\vskip 0 mm ';
923: } elsif ($align eq 'right') {
924: $post='}'.'\vskip 0 mm ';
925: }
926: $currentstring .= '}}'.$post;
927: }
928: return $currentstring;
929: }
930:
931: #-- <h4> tag
932: sub start_h4 {
933: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
934: my $currentstring = &end_p(); # Close off any prior para.
935: if ($target eq 'web' || $target eq 'webgrade') {
936: $currentstring .= $token->[4];
937: } elsif ($target eq 'tex') {
938: my $pre;
939: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
940: if ($align eq 'center') {
941: $pre='\begin{center}';
942: } elsif ($align eq 'left') {
943: $pre='\rlap{';
944: } elsif ($align eq 'right') {
945: $pre=' \hfill \llap{';
946: }
947: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
948: if (not defined $TeXsize) {$TeXsize="large";}
949: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_h4 {
955: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
956: my $currentstring = '';
957: if ($target eq 'web' || $target eq 'webgrade') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: my $post='\vskip 0 mm ';
961: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
962: if ($align eq 'center') {
963: $post='\end{center}';
964: } elsif ($align eq 'left') {
965: $post='} \hfill'.'\vskip 0 mm ';
966: } elsif ($align eq 'right') {
967: $post='}'.'\vskip 0 mm ';
968: }
969: $currentstring .= '}}'.$post;
970: }
971: return $currentstring;
972: }
973:
974: #-- <h5> tag
975: sub start_h5 {
976: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
977: my $currentstring = &end_p(); # Close off any prior paras.
978: if ($target eq 'web' || $target eq 'webgrade') {
979: $currentstring .= $token->[4];
980: } elsif ($target eq 'tex') {
981: my $pre;
982: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
983: if ($align eq 'center') {
984: $pre='\begin{center}';
985: } elsif ($align eq 'left') {
986: $pre='\rlap{';
987: } elsif ($align eq 'right') {
988: $pre=' \hfill \llap{';
989: }
990: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
991: if (not defined $TeXsize) {$TeXsize="large";}
992: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
993: }
994: return $currentstring;
995: }
996:
997: sub end_h5 {
998: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
999: my $currentstring = '';
1000: if ($target eq 'web' || $target eq 'webgrade') {
1001: $currentstring .= $token->[2];
1002: } elsif ($target eq 'tex') {
1003: my $post='\vskip 0 mm ';
1004: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1005: if ($align eq 'center') {
1006: $post='\end{center}';
1007: } elsif ($align eq 'left') {
1008: $post='} \hfill'.'\vskip 0 mm ';
1009: } elsif ($align eq 'right') {
1010: $post='}'.'\vskip 0 mm ';
1011: }
1012: $currentstring .= '}}'.$post;
1013: }
1014: return $currentstring;
1015: }
1016:
1017: #-- <h6> tag
1018: sub start_h6 {
1019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1020: my $currentstring = &end_p(); # Close off any prior paras.
1021: if ($target eq 'web' || $target eq 'webgrade') {
1022: $currentstring .= $token->[4];
1023: } elsif ($target eq 'tex') {
1024: my $pre;
1025: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1026: if ($align eq 'center') {
1027: $pre='\begin{center}';
1028: } elsif ($align eq 'left') {
1029: $pre='\rlap{';
1030: } elsif ($align eq 'right') {
1031: $pre=' \hfill \llap{';
1032: }
1033: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1034: if (not defined $TeXsize) {$TeXsize="large";}
1035: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1036: }
1037: return $currentstring;
1038: }
1039:
1040: sub end_h6 {
1041: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1042: my $currentstring = '';
1043: if ($target eq 'web' || $target eq 'webgrade') {
1044: $currentstring .= $token->[2];
1045: } elsif ($target eq 'tex') {
1046: my $post='\vskip 0 mm ';
1047: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1048: if ($align eq 'center') {
1049: $post='\end{center}';
1050: } elsif ($align eq 'left') {
1051: $post='} \hfill'.'\vskip 0 mm ';
1052: } elsif ($align eq 'right') {
1053: $post='}'.'\vskip 0 mm ';
1054: }
1055: $currentstring .= '}}'.$post;
1056: }
1057: return $currentstring;
1058: }
1059:
1060: #--- <cite> tag (end tag required)
1061: sub start_cite {
1062: my ($target,$token) = @_;
1063: my $currentstring = '';
1064: if ($target eq 'web' || $target eq 'webgrade') {
1065: $currentstring .= $token->[4];
1066: } elsif ($target eq 'tex') {
1067: $currentstring .= '\textit{';
1068: }
1069: return $currentstring;
1070: }
1071:
1072: sub end_cite {
1073: my ($target,$token) = @_;
1074: my $currentstring = '';
1075: if ($target eq 'web' || $target eq 'webgrade') {
1076: $currentstring .= $token->[2];
1077: } elsif ($target eq 'tex') {
1078: $currentstring .= '}';
1079: }
1080: return $currentstring;
1081: }
1082:
1083: #-- <i> tag (end tag required)
1084: sub start_i {
1085: my ($target,$token) = @_;
1086: my $currentstring = '';
1087: if ($target eq 'web' || $target eq 'webgrade') {
1088: $currentstring .= $token->[4];
1089: } elsif ($target eq 'tex') {
1090: $currentstring .= '\textit{';
1091: }
1092: return $currentstring;
1093: }
1094:
1095: sub end_i {
1096: my ($target,$token) = @_;
1097: my $currentstring = '';
1098: if ($target eq 'web' || $target eq 'webgrade') {
1099: $currentstring .= $token->[2];
1100: } elsif ($target eq 'tex') {
1101: $currentstring .= '}';
1102: }
1103: return $currentstring;
1104: }
1105:
1106: #-- <address> tag (end tag required)
1107: sub start_address {
1108: my ($target,$token) = @_;
1109: my $currentstring = '';
1110: if ($target eq 'web' || $target eq 'webgrade') {
1111: $currentstring .= $token->[4];
1112: } elsif ($target eq 'tex') {
1113: $currentstring .= '\textit{';
1114: }
1115: return $currentstring;
1116: }
1117:
1118: sub end_address {
1119: my ($target,$token) = @_;
1120: my $currentstring = '';
1121: if ($target eq 'web' || $target eq 'webgrade') {
1122: $currentstring .= $token->[2];
1123: } elsif ($target eq 'tex') {
1124: $currentstring .= '}';
1125: }
1126: return $currentstring;
1127: }
1128:
1129: #-- <dfn> tag (end tag required)
1130: sub start_dfn {
1131: my ($target,$token) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web' || $target eq 'webgrade') {
1134: $currentstring .= $token->[4];
1135: } elsif ($target eq 'tex') {
1136: $currentstring .= '\textit{';
1137: }
1138: return $currentstring;
1139: }
1140:
1141: sub end_dfn {
1142: my ($target,$token) = @_;
1143: my $currentstring = '';
1144: if ($target eq 'web' || $target eq 'webgrade') {
1145: $currentstring .= $token->[2];
1146: } elsif ($target eq 'tex') {
1147: $currentstring .= '}';
1148: }
1149: return $currentstring;
1150: }
1151:
1152: #-- <tt> tag (end tag required)
1153: sub start_tt {
1154: my ($target,$token) = @_;
1155: my $currentstring = '';
1156: if ($target eq 'web' || $target eq 'webgrade') {
1157: $currentstring .= $token->[4];
1158: } elsif ($target eq 'tex') {
1159: $currentstring .= '\texttt{';
1160: }
1161: return $currentstring;
1162: }
1163:
1164: sub end_tt {
1165: my ($target,$token) = @_;
1166: my $currentstring = '';
1167: if ($target eq 'web' || $target eq 'webgrade') {
1168: $currentstring .= $token->[2];
1169: } elsif ($target eq 'tex') {
1170: $currentstring .= '}';
1171: }
1172: return $currentstring;
1173: }
1174:
1175: #-- <kbd> tag (end tag required)
1176: sub start_kbd {
1177: my ($target,$token) = @_;
1178: my $currentstring = '';
1179: if ($target eq 'web' || $target eq 'webgrade') {
1180: $currentstring .= $token->[4];
1181: } elsif ($target eq 'tex') {
1182: $currentstring .= '\texttt{';
1183: }
1184: return $currentstring;
1185: }
1186:
1187: sub end_kbd {
1188: my ($target,$token) = @_;
1189: my $currentstring = '';
1190: if ($target eq 'web' || $target eq 'webgrade') {
1191: $currentstring .= $token->[2];
1192: } elsif ($target eq 'tex') {
1193: $currentstring .= '}';
1194: }
1195: return $currentstring;
1196: }
1197:
1198: #-- <code> tag (end tag required)
1199: sub start_code {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web' || $target eq 'webgrade') {
1203: $currentstring .= $token->[4];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '\texttt{';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: sub end_code {
1211: my ($target,$token) = @_;
1212: my $currentstring = '';
1213: if ($target eq 'web' || $target eq 'webgrade') {
1214: $currentstring .= $token->[2];
1215: } elsif ($target eq 'tex') {
1216: $currentstring .= '}';
1217: }
1218: return $currentstring;
1219: }
1220:
1221: #-- <em> tag (end tag required)
1222: sub start_em {
1223: my ($target,$token) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web' || $target eq 'webgrade') {
1226: $currentstring .= $token->[4];
1227: } elsif ($target eq 'tex') {
1228: $currentstring .= '\emph{';
1229: }
1230: return $currentstring;
1231: }
1232:
1233: sub end_em {
1234: my ($target,$token) = @_;
1235: my $currentstring = '';
1236: if ($target eq 'web' || $target eq 'webgrade') {
1237: $currentstring .= $token->[2];
1238: } elsif ($target eq 'tex') {
1239: $currentstring .= '}';
1240: }
1241: return $currentstring;
1242: }
1243:
1244: #-- <q> tag (end tag required)
1245: sub start_q {
1246: my ($target,$token) = @_;
1247: my $currentstring = '';
1248: if ($target eq 'web' || $target eq 'webgrade') {
1249: $currentstring .= $token->[4];
1250: } elsif ($target eq 'tex') {
1251: $currentstring .= '\emph{';
1252: }
1253: return $currentstring;
1254: }
1255:
1256: sub end_q {
1257: my ($target,$token) = @_;
1258: my $currentstring = '';
1259: if ($target eq 'web' || $target eq 'webgrade') {
1260: $currentstring .= $token->[2];
1261: } elsif ($target eq 'tex') {
1262: $currentstring .= '}';
1263: }
1264: return $currentstring;
1265: }
1266:
1267: # <p> is a bit strange since it does not require a closing </p>
1268: # However in latex, we must often output closing stuff to end
1269: # environments and {}'s etc. Therefore we do all the work
1270: # of figuring out the ending strings in the start tag processing,
1271: # and provide a mechanism to output the stop text external
1272: # to tag processing.
1273: #
1274: {
1275:
1276: my $closing_string = ''; # String required to close <p>
1277:
1278: # Some tags are <p> fragile meaning that <p> inside of them
1279: # does not work within TeX mode. This is managed via the
1280: # counter below:
1281: #
1282:
1283: my $para_disabled = 0;
1284:
1285: sub disable_para {
1286: $para_disabled++;
1287: }
1288: sub enable_para {
1289: $para_disabled--;
1290: }
1291:
1292:
1293: #-- <p> tag (end tag optional)
1294: #optional attribute - align="center|left|right"
1295: sub start_p {
1296: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1297: my $currentstring = '';
1298: if ($target eq 'web' || $target eq 'webgrade') {
1299: $currentstring .= &end_p(); # close off prior para if in progress.
1300: $currentstring .= $token->[4];
1301: if (! ($currentstring =~ /\//)) {
1302: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1303: }
1304: } elsif ($target eq 'tex' && !$para_disabled) {
1305:
1306: $currentstring .= &end_p(); # close off prior para if in progress.
1307: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1308: if ($align eq 'center') {
1309: $currentstring .='\begin{center}\par ';
1310: $closing_string = '\end{center}';
1311: if (&is_inside_of($tagstack, "table")) {
1312: $currentstring = ¢er_correction().$currentstring;
1313: }
1314: } elsif ($align eq 'right') {
1315: $currentstring.="\n".'{\flushright ';
1316: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1317: $closing_string= "}\n";
1318: } elsif ($align eq 'left') {
1319: $currentstring.= "\n".'{\flushleft ';
1320: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1321: $closing_string = "}\n";
1322: } else {
1323: $currentstring.='\par ';
1324: if (&is_inside_of($tagstack, 'table')) {
1325: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1326: } else {
1327: $closing_string = '\strut\\\\\strut ';
1328: }
1329: }
1330:
1331: }
1332: return $currentstring;
1333: }
1334: #
1335: # End paragraph processing just requires that we output the
1336: # closing string that was saved and blank it.
1337: sub end_p {
1338: # Note only 'tex' mode uses disable_para and enable_para
1339: # so we don't need to know the target in the check below:
1340:
1341: if (!$para_disabled) {
1342: my $current_string = $closing_string;
1343: $closing_string = ''; # Not in a para anymore.
1344: return $current_string;
1345: } else {
1346: return '';
1347: }
1348:
1349: }
1350: }
1351: #-- <br> tag (end tag forbidden)
1352: sub start_br {
1353: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1354: my $currentstring = '';
1355: if ($target eq 'web' || $target eq 'webgrade') {
1356: $currentstring .= $token->[4];
1357: } elsif ($target eq 'tex') {
1358: my @tempo=@$tagstack;
1359: my $signal=0;
1360: # Not going to factor this to is_inside_of since that would require
1361: # multiple stack traversals.
1362: #
1363: for (my $i=$#tempo;$i>=0;$i--) {
1364: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1365: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1366: $signal=1;
1367: }
1368: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1369: $signal = 1;
1370: }
1371: }
1372: if ($signal != 1) {
1373: $currentstring .= '\strut \\\\ \strut ';
1374: }
1375:
1376: }
1377: return $currentstring;
1378: }
1379:
1380: sub end_br {
1381: my ($target,$token) = @_;
1382: my $currentstring = '';
1383: if ($target eq 'web' || $target eq 'webgrade') {
1384: $currentstring .= $token->[2];
1385: }
1386: return $currentstring;
1387: }
1388:
1389: #-- <big> tag (end tag required)
1390: sub start_big {
1391: my ($target,$token) = @_;
1392: my $currentstring = '';
1393: if ($target eq 'web' || $target eq 'webgrade') {
1394: $currentstring .= $token->[4];
1395: } elsif ($target eq 'tex') {
1396: $currentstring .= '{\large ';
1397: }
1398: return $currentstring;
1399: }
1400:
1401: sub end_big {
1402: my ($target,$token) = @_;
1403: my $currentstring = '';
1404: if ($target eq 'web' || $target eq 'webgrade') {
1405: $currentstring .= $token->[2];
1406: } elsif ($target eq 'tex') {
1407: $currentstring .= '}';
1408: }
1409: return $currentstring;
1410: }
1411:
1412: #-- <small> tag (end tag required)
1413: sub start_small {
1414: my ($target,$token) = @_;
1415: my $currentstring = '';
1416: if ($target eq 'web' || $target eq 'webgrade') {
1417: $currentstring .= $token->[4];
1418: } elsif ($target eq 'tex') {
1419: $currentstring .= '{\footnotesize ';
1420: }
1421: return $currentstring;
1422: }
1423:
1424: sub end_small {
1425: my ($target,$token) = @_;
1426: my $currentstring = '';
1427: if ($target eq 'web' || $target eq 'webgrade') {
1428: $currentstring .= $token->[2];
1429: } elsif ($target eq 'tex') {
1430: $currentstring .= '}';
1431: }
1432: return $currentstring;
1433: }
1434:
1435: #-- <basefont> tag (end tag forbidden)
1436: sub start_basefont {
1437: my ($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: $currentstring = '{\\'.$basesize.' ';
1445: }
1446: }
1447: return $currentstring;
1448: }
1449:
1450: sub end_basefont {
1451: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1452: my $currentstring = '';
1453: if ($target eq 'web' || $target eq 'webgrade') {
1454: $currentstring = $token->[4];
1455: } elsif ($target eq 'tex') {
1456: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1457: if (defined $basesize) {
1458: $currentstring = '}';
1459: }
1460: }
1461: return $currentstring;
1462: }
1463:
1464: #-- <font> tag (end tag required)
1465: sub start_font {
1466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1467: my $currentstring = '';
1468: if ($target eq 'web' || $target eq 'webgrade') {
1469: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1470: $currentstring = $token->[4];
1471: } elsif ($target eq 'tex') {
1472: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1473: if (defined $fontsize) {
1474: $currentstring = '{\\'.$fontsize.' ';
1475: }
1476: }
1477: return $currentstring;
1478: }
1479:
1480: sub end_font {
1481: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1482: my $currentstring = '';
1483: if ($target eq 'web' || $target eq 'webgrade') {
1484: $currentstring = $token->[2];
1485: } elsif ($target eq 'tex') {
1486: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1487: if (defined $fontsize) {
1488: $currentstring = '}';
1489: }
1490: }
1491: return $currentstring;
1492: }
1493:
1494: #-- <strike> tag (end tag required)
1495: sub start_strike {
1496: my ($target,$token) = @_;
1497: my $currentstring = '';
1498: if ($target eq 'web' || $target eq 'webgrade') {
1499: $currentstring .= $token->[4];
1500: } elsif ($target eq 'tex') {
1501: &Apache::lonxml::startredirection();
1502: }
1503: return $currentstring;
1504: }
1505:
1506: sub end_strike {
1507: my ($target,$token) = @_;
1508: my $currentstring = '';
1509: if ($target eq 'web' || $target eq 'webgrade') {
1510: $currentstring .= $token->[2];
1511: } elsif ($target eq 'tex') {
1512: $currentstring=&Apache::lonxml::endredirection();
1513: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1514: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1515: $currentstring=~s/(\S)\s*$/$1\}/;
1516: }
1517: return $currentstring;
1518: }
1519:
1520: #-- <s> tag (end tag required)
1521: sub start_s {
1522: my ($target,$token) = @_;
1523: my $currentstring = '';
1524: if ($target eq 'web' || $target eq 'webgrade') {
1525: $currentstring .= $token->[4];
1526: } elsif ($target eq 'tex') {
1527: &Apache::lonxml::startredirection();
1528: }
1529: return $currentstring;
1530: }
1531:
1532: sub end_s {
1533: my ($target,$token) = @_;
1534: my $currentstring = '';
1535: if ($target eq 'web' || $target eq 'webgrade') {
1536: $currentstring .= $token->[2];
1537: } elsif ($target eq 'tex') {
1538: $currentstring=&Apache::lonxml::endredirection();
1539: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1540: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1541: $currentstring=~s/(\S)\s*$/$1\}/;
1542: }
1543: return $currentstring;
1544: }
1545:
1546: #-- <sub> tag (end tag required)
1547: sub start_sub {
1548: my ($target,$token) = @_;
1549: my $currentstring = '';
1550: if ($target eq 'web' || $target eq 'webgrade') {
1551: $currentstring .= $token->[4];
1552: } elsif ($target eq 'tex') {
1553: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1554: }
1555: return $currentstring;
1556: }
1557:
1558: sub end_sub {
1559: my ($target,$token) = @_;
1560: my $currentstring = '';
1561: if ($target eq 'web' || $target eq 'webgrade') {
1562: $currentstring .= $token->[2];
1563: } elsif ($target eq 'tex') {
1564: $currentstring .= '}}';
1565: }
1566: return $currentstring;
1567: }
1568:
1569: #-- <sup> tag (end tag required)
1570: sub start_sup {
1571: my ($target,$token) = @_;
1572: my $currentstring = '';
1573: if ($target eq 'web' || $target eq 'webgrade') {
1574: $currentstring .= $token->[4];
1575: } elsif ($target eq 'tex') {
1576: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1577: }
1578: return $currentstring;
1579: }
1580:
1581: sub end_sup {
1582: my ($target,$token) = @_;
1583: my $currentstring = '';
1584: if ($target eq 'web' || $target eq 'webgrade') {
1585: $currentstring .= $token->[2];
1586: } elsif ($target eq 'tex') {
1587: $currentstring .= '}}';
1588: }
1589: return $currentstring;
1590: }
1591:
1592: #-- <hr> tag (end tag forbidden)
1593: sub start_hr {
1594: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1595: my $currentstring = &end_p(); # End enclosing para.
1596: if ($target eq 'web' || $target eq 'webgrade') {
1597: $currentstring .= $token->[4];
1598: } elsif ($target eq 'tex') {
1599:
1600: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1601: #
1602: my $restart_sub = 0;
1603: my $restart_sup = 0;
1604:
1605: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1606: # using the start_ stop_ functions.. those tags only care about
1607: # $target.
1608:
1609: if (&is_inside_of($tagstack, "sub")) {
1610: $restart_sub = 1;
1611: $currentstring .= &end_sub($target, $token, $tagstack,
1612: $parstack, $parser, $safeeval);
1613: }
1614: if (&is_inside_of($tagstack, "sup")) {
1615: $restart_sup = 1;
1616: $currentstring .= &end_sup($target, $token, $tagstack,
1617: $parstack, $parser, $safeeval);
1618: }
1619:
1620: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1621: if (defined $LaTeXwidth) {
1622: if ($LaTeXwidth=~/^%/) {
1623: substr($LaTeXwidth,0,1)='';
1624: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1625: }
1626: } else {
1627: $LaTeXwidth ='0.9\textwidth';
1628: }
1629: my ($pre,$post);
1630: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1631: if (($align eq 'center') || (not defined $align)) {
1632: $pre=''; $post='';
1633: } elsif ($align eq 'left') {
1634: $pre='\rlap{'; $post='} \hfill';
1635: } elsif ($align eq 'right') {
1636: $pre=' \hfill \llap{'; $post='}';
1637: }
1638: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1639: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1640: # Turn stuff back on that we can't be inside of.
1641:
1642: if ($restart_sub) {
1643: $currentstring .= &start_sub($target, $token, $tagstack,
1644: $parstack, $parser, $safeeval);
1645: }
1646: if ($restart_sup) {
1647: $currentstring .= &start_sup($target, $token, $tagstack,
1648: $parstack, $parser, $safeeval);
1649: }
1650: }
1651: return $currentstring;
1652: }
1653:
1654: sub end_hr {
1655: my ($target,$token) = @_;
1656: my $currentstring = '';
1657: if ($target eq 'web' || $target eq 'webgrade') {
1658: $currentstring .= $token->[2];
1659: }
1660: return $currentstring;
1661: }
1662:
1663: #-- <div> tag (end tag required)
1664: {
1665:
1666: # Since div can be nested, the stack below is used
1667: # in 'tex' mode to store the ending strings
1668: # for the div stack.
1669:
1670: my @div_end_stack;
1671:
1672: sub start_div {
1673: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1674: my $currentstring = &end_p(); # Close enclosing para.
1675: if ($target eq 'web' || $target eq 'webgrade') {
1676: $currentstring .= $token->[4];
1677: }
1678: if ($target eq 'tex') {
1679: # 4 possible alignments: left, right, center, and -missing-.
1680: # If inside a table row, we must let the table logic
1681: # do the alignment, however.
1682: #
1683:
1684: my $endstring = '';
1685:
1686: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1687: $safeeval, undef, 1));
1688: if ($align eq 'center') {
1689: $currentstring .= '\begin{center}';
1690: $endstring = '\end{center}';
1691: if (&is_inside_of($tagstack, "table")) {
1692: $currentstring = ¢er_correction().$currentstring;
1693: $endstring .= ¢er_end_correction();
1694: }
1695: }
1696: elsif ($align eq 'right') {
1697: $currentstring .= '\begin{flushright}';
1698: $endstring .= '\end{flushright}';
1699: } elsif ($align eq 'left') {
1700: $currentstring .= '\begin{flushleft}';
1701: $endstring = '\end{flushleft}';
1702: } else {
1703:
1704: }
1705: $currentstring .= "\n"; # For human readability.
1706: $endstring = "\n$endstring\n"; # For human readability
1707: push(@div_end_stack, $endstring);
1708: }
1709: return $currentstring;
1710: }
1711:
1712: sub end_div {
1713: my ($target,$token) = @_;
1714: my $currentstring = '';
1715: if ($target eq 'web' || $target eq 'webgrade') {
1716: $currentstring .= $token->[2];
1717: }
1718: if ($target eq 'tex') {
1719: my $endstring = pop @div_end_stack;
1720: $currentstring .= $endstring;
1721: }
1722: return $currentstring;
1723: }
1724: }
1725:
1726: #-- <a> tag (end tag required)
1727: sub start_a {
1728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1729: my $currentstring = '';
1730: if ($target eq 'web' || $target eq 'webgrade') {
1731: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1732: undef,1);
1733: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1734: if ($href =~ /\S/) {
1735: if ($href !~ m{^https?://}) {
1736: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1737: my $linkurl;
1738: if ($href =~ m{^/uploaded/}) {
1739: $linkurl = $href;
1740: } elsif ($href =~ m{^[^/]}) {
1741: my $path = $url;
1742: $path =~ s{[^/]*$}{};
1743: $linkurl = $path.$href;
1744: }
1745: if ($linkurl =~ m{^/uploaded/}) {
1746: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1747: if (&Apache::lonnet::is_on_map($url)) {
1748: &Apache::lonxml::extlink($linkurl);
1749: } elsif ($env{'request.course.id'}) {
1750: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1751: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1752: if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/(docs|supplemental)/)}) {
1753: my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
1754: if ($cleanhref) {
1755: &Apache::lonxml::extlink($cleanhref);
1756: }
1757: }
1758: }
1759: }
1760: }
1761: }
1762: }
1763: }
1764: return $currentstring;
1765: }
1766:
1767: sub end_a {
1768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1769: my $currentstring = '';
1770: if ($target eq 'web' || $target eq 'webgrade') {
1771: $currentstring .= $token->[2];
1772: }
1773: if ($target eq 'tex') {
1774: my $href =
1775: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1776: my $name =
1777: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1778: my $uriprint =
1779: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1780: my $anchorprint =
1781: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1782: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1783: $href =~ s/([^\\])%/$1\\\%/g;
1784: # Substitute special symbols... and allow line breaks at each /
1785: #
1786: $href = &Apache::lonxml::latex_special_symbols($href);
1787: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1788: $currentstring .= ' ({\tt URI:'.$href.'})';
1789: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1790: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1791: } else {
1792: $currentstring.='';
1793: }
1794: }
1795: return $currentstring;
1796: }
1797:
1798: #-- <li> tag (end tag optional)
1799: sub start_li {
1800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1801: my $currentstring = '';
1802: if ($target eq 'web' || $target eq 'webgrade') {
1803: $currentstring = $token->[4];
1804: } elsif ($target eq 'tex') {
1805: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1806: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1807: #FIXME need to support types i and I
1808: if ($type=~/disc/) {
1809: $currentstring .= ' \item[$\bullet$] ';
1810: } elsif ($type=~/circle/) {
1811: $currentstring .= ' \item[$\circ$] ';
1812: } elsif ($type=~/square/) {
1813: $currentstring .= ' \item[$\diamond$] ';
1814: } elsif ($type eq '1') {
1815: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1816: } elsif ($type eq 'A') {
1817: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1818: } elsif ($type eq 'a') {
1819: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1820: } elsif ($value ne '') {
1821: $currentstring .= ' \item['.$value.'] ';
1822: } else {
1823: $currentstring .= ' \item ';
1824: }
1825: $Apache::londefdef::list_index++;
1826: }
1827: return $currentstring;
1828: }
1829:
1830: sub end_li {
1831: my ($target,$token) = @_;
1832: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1833: if ($target eq 'web' || $target eq 'webgrade') {
1834: $currentstring .= $token->[2];
1835: }
1836: return $currentstring;
1837: }
1838:
1839: #-- <u> tag (end tag required)
1840: sub start_u {
1841: my ($target,$token) = @_;
1842: my $currentstring = '';
1843: if ($target eq 'web' || $target eq 'webgrade') {
1844: $currentstring .= $token->[4];
1845: } elsif ($target eq 'tex') {
1846: &Apache::lonxml::startredirection();
1847: }
1848: return $currentstring;
1849: }
1850:
1851: sub end_u {
1852: my ($target,$token) = @_;
1853: my $currentstring = '';
1854: if ($target eq 'web' || $target eq 'webgrade') {
1855: $currentstring .= $token->[2];
1856: } elsif ($target eq 'tex') {
1857: $currentstring=&Apache::lonxml::endredirection();
1858: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1859: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1860: $currentstring=~s/(\S)\s*$/$1\}/;
1861: }
1862: return $currentstring;
1863: }
1864:
1865: #-- <ul> tag (end tag required)
1866: sub start_ul {
1867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1868: my $currentstring = &end_p(); # Close off enclosing list.
1869: if ($target eq 'web' || $target eq 'webgrade') {
1870: $currentstring .= $token->[4];
1871: } elsif ($target eq 'tex') {
1872: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1873: $Apache::londefdef::list_index=0;
1874: if ($TeXtype eq 'disc') {
1875: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1876: '\renewcommand{\labelitemii}{$\bullet$}'.
1877: '\renewcommand{\labelitemiii}{$\bullet$}'.
1878: '\renewcommand{\labelitemiv}{$\bullet$}';
1879: } elsif ($TeXtype eq 'circle') {
1880: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1881: '\renewcommand{\labelitemii}{$\circ$}'.
1882: '\renewcommand{\labelitemiii}{$\circ$}'.
1883: '\renewcommand{\labelitemiv}{$\circ$}';
1884: } elsif ($TeXtype eq 'square') {
1885: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1886: '\renewcommand{\labelitemii}{$\diamond$}'.
1887: '\renewcommand{\labelitemiii}{$\diamond$}'.
1888: '\renewcommand{\labelitemiv}{$\diamond$}';
1889: }
1890: $currentstring .= '\strut \begin{itemize}';
1891: }
1892: return $currentstring;
1893: }
1894:
1895: sub end_ul {
1896: my ($target,$token) = @_;
1897: my $currentstring = '';
1898: if ($target eq 'web' || $target eq 'webgrade') {
1899: $currentstring = $token->[2];
1900: } elsif ($target eq 'tex') {
1901: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1902: '\renewcommand{\labelitemii}{$\bullet$}'.
1903: '\renewcommand{\labelitemiii}{$\bullet$}'.
1904: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1905: }
1906: return $currentstring;
1907: }
1908:
1909: #-- <menu> tag (end tag required)
1910: sub start_menu {
1911: my ($target,$token) = @_;
1912: my $currentstring = '';
1913: if ($target eq 'web' || $target eq 'webgrade') {
1914: $currentstring = $token->[4];
1915: } elsif ($target eq 'tex') {
1916: $currentstring = " \\begin{itemize} ";
1917: }
1918: return $currentstring;
1919: }
1920:
1921: sub end_menu {
1922: my ($target,$token) = @_;
1923: my $currentstring = '';
1924: if ($target eq 'web' || $target eq 'webgrade') {
1925: $currentstring = $token->[2];
1926: } elsif ($target eq 'tex') {
1927: $currentstring = " \\end{itemize}";
1928: }
1929: return $currentstring;
1930: }
1931:
1932: #-- <dir> tag (end tag required)
1933: sub start_dir {
1934: my ($target,$token) = @_;
1935: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1936: if ($target eq 'web' || $target eq 'webgrade') {
1937: $currentstring .= $token->[4];
1938: } elsif ($target eq 'tex') {
1939: $currentstring .= " \\begin{itemize} ";
1940: }
1941: return $currentstring;
1942: }
1943:
1944: sub end_dir {
1945: my ($target,$token) = @_;
1946: my $currentstring = '';
1947: if ($target eq 'web' || $target eq 'webgrade') {
1948: $currentstring = $token->[2];
1949: } elsif ($target eq 'tex') {
1950: $currentstring = " \\end{itemize}";
1951: }
1952: return $currentstring;
1953: }
1954:
1955: #-- <ol> tag (end tag required)
1956: sub start_ol {
1957: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1958: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1959: if ($target eq 'web' || $target eq 'webgrade') {
1960: $currentstring .= $token->[4];
1961: } elsif ($target eq 'tex') {
1962: $Apache::londefdef::list_index=0;
1963: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1964: if ($type eq '1') {
1965: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1966: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1967: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1968: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1969: } elsif ($type eq 'A') {
1970: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1971: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1972: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1973: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1974: } elsif ($type eq 'a') {
1975: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1976: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1977: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1978: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1979: } elsif ($type eq 'i') {
1980: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1981: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1982: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1983: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1984: } elsif ($type eq 'I') {
1985: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1986: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1987: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1988: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1989: }
1990: $currentstring .= '\strut \begin{enumerate}';
1991: }
1992: return $currentstring;
1993: }
1994:
1995: sub end_ol {
1996: my ($target,$token) = @_;
1997: my $currentstring = '';
1998: if ($target eq 'web' || $target eq 'webgrade') {
1999: $currentstring = $token->[2];
2000: } elsif ($target eq 'tex') {
2001: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
2002: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
2003: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
2004: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
2005: }
2006: return $currentstring;
2007: }
2008:
2009: #-- <dl> tag (end tag required)
2010: sub start_dl {
2011: my ($target,$token) = @_;
2012: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
2013: if ($target eq 'web' || $target eq 'webgrade') {
2014: $currentstring .= $token->[4];
2015: } elsif ($target eq 'tex') {
2016: $currentstring .= '\begin{description}';
2017: $Apache::londefdef::DL++;
2018: push(@Apache::londefdef::description,[]);
2019: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
2020: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
2021: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
2022: }
2023: return $currentstring;
2024: }
2025:
2026: sub end_dl {
2027: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2028: my $currentstring = '';
2029: if ($target eq 'web' || $target eq 'webgrade') {
2030: $currentstring = $token->[2];
2031: } elsif ($target eq 'tex') {
2032: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2033: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2034: foreach my $element (@{$Apache::londefdef::description[-1]}) {
2035: $currentstring.=' '.$element.' ';
2036: }
2037: pop(@Apache::londefdef::description);
2038: $currentstring.='\end{description}';
2039: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
2040: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
2041: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
2042: $Apache::londefdef::DL--;
2043: }
2044: return $currentstring;
2045: }
2046:
2047: #-- <dt> tag (end tag optional)
2048: sub start_dt {
2049: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2050: my $currentstring='';
2051: if ($target eq 'web' || $target eq 'webgrade') {
2052: $currentstring = $token->[4];
2053: } elsif ($target eq 'tex') {
2054: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2055: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2056: &Apache::lonxml::startredirection();
2057: $Apache::londefdef::DT[-1]++;
2058: $Apache::londefdef::seenDT[-1]=1;
2059: }
2060: return $currentstring;
2061: }
2062:
2063: sub end_dt {
2064: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2065: my $currentstring = '';
2066: if ($target eq 'web' || $target eq 'webgrade') {
2067: $currentstring = $token->[2];
2068: } elsif ($target eq 'tex') {
2069: if ($Apache::londefdef::DT[-1]) {
2070: my $data=&item_cleanup();
2071: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2072: $Apache::londefdef::DT[-1]--;
2073: }
2074: }
2075: return $currentstring;
2076: }
2077:
2078: sub item_cleanup {
2079: my $item=&Apache::lonxml::endredirection();
2080: $item=~s/\\begin\{center}//g;
2081: $item=~s/\\end\{center}//g;
2082: return $item;
2083: }
2084:
2085: #-- <dd> tag (end tag optional)
2086: sub start_dd {
2087: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2088: my $currentstring = '';
2089: if ($target eq 'web' || $target eq 'webgrade') {
2090: $currentstring = $token->[4];
2091: } elsif ($target eq 'tex') {
2092: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2093: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2094: if (!$Apache::londefdef::seenDT[-1]) {
2095: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2096: }
2097: push(@{$Apache::londefdef::description[-1]},'');
2098: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2099: $Apache::londefdef::DD[-1]++;
2100: &Apache::lonxml::startredirection();
2101: }
2102: return $currentstring;
2103: }
2104:
2105: sub end_dd {
2106: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2107: my $currentstring = '';
2108: if ($target eq 'web' || $target eq 'webgrade') {
2109: $currentstring = $token->[2];
2110: } elsif ($target eq 'tex') {
2111: $Apache::londefdef::description[-1]->[-1].=
2112: &Apache::lonxml::endredirection().' \vskip 0mm ';
2113: $Apache::londefdef::DD[-1]--;
2114: }
2115: return $currentstring;
2116: }
2117:
2118: #-- <table> tag (end tag required)
2119: # <table> also ends any prior <p> that is not closed.
2120: # but, unless I allow <p>'s to nest, that's the
2121: # only way I could think of to allow <p> in
2122: # <tr> <th> bodies
2123: #
2124: #list of supported attributes: border,width,TeXwidth,TeXtheme
2125: # align
2126: sub start_table {
2127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2128: my $textwidth = '';
2129: my $currentstring = &end_p();
2130: if ($target eq 'web' || $target eq 'webgrade') {
2131: $currentstring .= $token->[4];
2132: } elsif ($target eq 'tex') {
2133: &disable_para(); # Can't have paras in a table.
2134:
2135: # Get the parameters that we can do something about:
2136:
2137: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2138: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2139: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2140: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2141: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2142:
2143: # The only thing that needs any figuring out is the width.. and then only if it is
2144: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2145: #
2146:
2147: my $table = new Apache::lontable();
2148: if ((defined $border) && ($border > 0)) {
2149: # &Apache::lonnet::logthis("Turning on table borders: $border");
2150: $table->table_border(1);
2151: if (!defined $cell_border) {
2152: $table->cell_border(1); # Default for rules is all if rules not defined.
2153: }
2154: }
2155:
2156: if ((defined $cell_border)) {
2157: if ($cell_border eq 'all') {
2158: $table->cell_border(1);
2159: } elsif ($cell_border eq 'rows') {
2160: $table->cell_border(2);
2161: } elsif ($cell_border eq 'cols') {
2162: $table->cell_border(3);
2163: } elsif($cell_border eq 'groups') {
2164: $table->cell_border(4);
2165: } else {
2166: $table->cell_border(0);
2167: }
2168: }
2169: if (defined $theme) {
2170: $table->theme($theme);
2171: }
2172: if (defined $align) {
2173: $table->alignment($align);
2174: }
2175:
2176: # Missing width is most of page width
2177:
2178: if (!(defined $width)) {
2179: $width = '70%';
2180: }
2181:
2182: # If a percentage, need to calculate what this means in terms of
2183: # page width:
2184:
2185: if ($width =~ /%$/) {
2186: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2187: $width =~ s/%//;
2188: $width = $width * $textwidth / 100.0;
2189: $width .= " mm";
2190: $table->width($width);
2191: }
2192:
2193: push(@Apache::londefdef::table, $table);
2194: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2195:
2196: }
2197: return $currentstring;
2198: }
2199:
2200: sub end_table {
2201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2202: my $currentstring = '';
2203: if ($target eq 'web' || $target eq 'webgrade') {
2204: $currentstring = $token->[2];
2205: } elsif ($target eq 'tex') {
2206:
2207:
2208: my $table = pop(@Apache::londefdef::table);
2209: my $t = $table->generate();
2210: # &Apache::lonnet::logthis("Generating string");
2211: $currentstring = $t->generate_string();
2212: # &Apache::lonnet::logthis("Generated: $currentstring");
2213: &enable_para();
2214:
2215: }
2216: return $currentstring;
2217: }
2218:
2219: #-- <tr> tag (end tag optional)
2220: sub start_tr {
2221: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2222: my $currentstring = '';
2223: if ($target eq 'web' || $target eq 'webgrade') {
2224: $currentstring = $token->[4];
2225: } elsif ($target eq 'tex') {
2226:
2227: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2228: $Apache::londefdef::table[-1]->start_row();
2229:
2230: if ($align ne '') {
2231: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2232: }
2233:
2234: #---------------------------------------------------------------
2235: # Old table code.
2236: #---------------------------------------------------------------
2237:
2238: if (0) {
2239: $Apache::londefdef::table[-1]{'row_number'}++;
2240: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2241: if ($alignchar ne '') {
2242: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2243: } else {
2244: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2245: }
2246: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2247: #
2248: # Need to save the number of table columns to preserve the max # columns.
2249: #
2250: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2251: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2252: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2253: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2254: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2255: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2256: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2257: }
2258: }
2259: return $currentstring;
2260: }
2261:
2262: sub end_tr {
2263: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2264: my $currentstring = &end_p(); # Close any pending <p> in the row.
2265: if ($target eq 'web' || $target eq 'webgrade') {
2266: $currentstring .= $token->[2];
2267: } elsif ($target eq 'tex') {
2268:
2269: # In case the user is missing a </td> or </th> tag:
2270:
2271: if ($Apache::londefdef::TD_redirection) {
2272: &end_td_tex($parstack,$parser,$safeeval);
2273: }
2274: $Apache::londefdef::table[-1]->end_row();
2275:
2276: #-----------------------------------------------
2277: # Old table code
2278: #-----------------------------------------------
2279:
2280: if (0) {
2281: if ($Apache::londefdef::TD_redirection) {
2282: &end_td_tex($parstack,$parser,$safeeval);
2283: }
2284: # Counter columns must be the maximum number of columns seen
2285: # in the table so far so:
2286: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2287: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2288: }
2289: }
2290:
2291:
2292: }
2293: return $currentstring;
2294: }
2295:
2296: #-- <td> tag (end tag optional)
2297: sub start_td {
2298: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2299: my $currentstring = '';
2300: if ($target eq 'web' || $target eq 'webgrade') {
2301: $currentstring = $token->[4];
2302: } elsif ($target eq 'tex') {
2303: $Apache::londefdef::TD_redirection = 1;
2304: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2305: }
2306: return $currentstring;
2307: }
2308:
2309: sub tag_check {
2310: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2311: my @ar=@$parstack;
2312: for (my $i=$#ar-1;$i>=0;$i--) {
2313: if (lc($$tagstack[$i]) eq $good_tag) {
2314: &start_td_tex($parstack,$parser,$safeeval);
2315: last;
2316: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2317: splice @ar, $i+1;
2318: &end_td_tex(\@ar,$parser,$safeeval);
2319: &start_td_tex($parstack,$parser,$safeeval);
2320: last;
2321: }
2322: }
2323: return '';
2324: }
2325:
2326: #
2327: # Factor out cell configuration hash generation:
2328: #
2329:
2330: sub cell_config_hash {
2331: my ($align, $rowspan, $colspan, $width) = @_;
2332: if ($rowspan ne '') {
2333: $rowspan =~ s/^\s+|\s+$//g;
2334: }
2335: if ($colspan ne '') {
2336: $colspan =~ s/^\s+|\s+$//g;
2337: }
2338: my %config;
2339: if ($align ne '') {
2340: $config{'halign'} = $align;
2341: }
2342: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2343: $config{'colspan'} = $colspan;
2344: }
2345: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2346: $config{'rowspan'} = $rowspan;
2347: }
2348: if ($width ne '') {
2349: $config{'width'} = $width;
2350: }
2351: return \%config;
2352: }
2353:
2354: sub start_td_tex {
2355: my ($parstack,$parser,$safeeval) = @_;
2356:
2357: # At this stage, an empty cell is created with the
2358: # appropriate rowspan/colspan and alignment
2359: # attributes, but empty of text. end_td_tex will
2360: # fetch the contents from the recursive parse and
2361: # fill the cell with them:
2362: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2363: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2364: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2365: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2366: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2367:
2368: my $table = $Apache::londefdef::table[-1];
2369: $table->add_cell('', $config);
2370:
2371:
2372: #------------------------------------------------
2373: # Old table code.
2374: #------------------------------------------------
2375:
2376: if (0) {
2377:
2378: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2379: if ($alignchar eq '') {
2380: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2381: }
2382: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2383: $Apache::londefdef::table[-1]{'counter_columns'}++;
2384: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2385: if (defined $TeXwidth) {
2386: my $current_length=&recalc($TeXwidth);
2387: $current_length=~/(\d+\.?\d*)/;
2388: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2389: }
2390: }
2391: &Apache::lonxml::startredirection();
2392: return '';
2393: }
2394:
2395: sub end_td_tex {
2396:
2397: my $text = &Apache::lonxml::endredirection();
2398: my $table = $Apache::londefdef::table[-1];
2399: $table->append_cell_text($text);
2400:
2401: #-------------------------------------------------
2402: # Old table code
2403: #-------------------------------------------------
2404:
2405: if (0) {
2406: my ($parstack,$parser,$safeeval) = @_;
2407: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2408: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2409: my $data = &Apache::lonxml::endredirection();
2410:
2411: # The rowspan array of the table indicates which cells are part of a span.
2412: # n indicates the start of a span set of n rows.
2413: # ^ indicates a cell that continues a span set.
2414: # _ indicates the cell is at the bottom of a span set.
2415: # If this and subsequent cells are part of a rowspan, we must
2416: # push along the row until we find one that is not.
2417:
2418: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2419: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2420: # Part of a span.
2421: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2422: $current_column++;
2423: }
2424: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2425:
2426:
2427: # Get the column and row spans.
2428: # Colspan can be done via \multicolumn if I can figure out the data structs.
2429:
2430: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2431: if (!$colspan) {
2432: $colspan = 1;
2433: }
2434:
2435: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2436: if (!$rowspan) {
2437: $rowspan = 1;
2438: }
2439:
2440:
2441:
2442: for (my $c = 0; $c < $colspan; $c++) {
2443: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2444: for (my $i = 1; $i < $rowspan; $i++) {
2445: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2446: if ($i == ($rowspan-1)) {
2447: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2448: }
2449: }
2450: }
2451:
2452: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2453: if (defined $TeXwidth) {
2454: for (my $c = 0; $c < $colspan; $c++) {
2455: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2456: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2457: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2458: }
2459: } else {
2460: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2461: my $garbage_data=$data;
2462: my $fwidth=0;
2463: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2464: my $current_length=&recalc($1);
2465: $current_length=~/(\d+\.?\d*)/;
2466: if ($fwidth<$1) {$fwidth=$1;}
2467: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2468: }
2469: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2470: my $current_length=$1;
2471: if ($fwidth<$current_length) {$fwidth=$current_length;}
2472: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2473: }
2474: for (my $c = 0; $c < $colspan; $c++) {
2475: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2476: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2477: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2478: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2479: }
2480: } 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)*/) {
2481: my $garbage_data=$data;
2482: my $fwidth=0;
2483: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2484: my $current_length=&recalc($1);
2485: $current_length=~/(\d+\.?\d*)/;
2486: if ($fwidth<$1) {$fwidth=$1;}
2487: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2488: }
2489: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2490: my $current_length=&recalc($1);
2491: $current_length=~/(\d+\.?\d*)/;
2492: if ($fwidth<$1) {$fwidth=$1;}
2493: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2494: }
2495: for (my $c = 0; $c < $colspan; $c++) {
2496: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2497: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2498: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2499: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2500: }
2501: $data=~s/\\\\\s*$//;
2502: } else {
2503: $data=~s/^\s+(\S.*)/$1/;
2504: $data=~s/(.*\S)\s+$/$1/;
2505: $data=~s/(\s)+/$1/;
2506: my ($current_length,$min_length)=(0,0);
2507: if ($data=~/\\vskip/) {
2508: my $newdata=$data;
2509: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2510: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2511: foreach my $elementdata (@newdata) {
2512: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2513: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2514: my @words=split(/ /,$elementdata);
2515: foreach my $word (@words) {
2516: my $lengthword=2.5*&LATEX_length($word);
2517: if ($min_length<$lengthword) {$min_length=$lengthword;}
2518: }
2519: }
2520: } else {
2521: $current_length=2.5*&LATEX_length($data);
2522: my @words=split(/ /,$data);
2523: foreach my $word (@words) {
2524: my $lengthword=2*&LATEX_length($word);
2525: if ($min_length<$lengthword) {$min_length=$lengthword;}
2526: }
2527: }
2528: for (my $c = 0; $c < $colspan; $c++) {
2529: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2530: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2531: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2532: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2533: }
2534: }
2535: }
2536: # Substitute all of the tables nested in this cell in their appropriate places.
2537:
2538:
2539: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2540: for (my $in=0; $in<=$nested_count; $in++) {
2541: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2542: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2543: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2544: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2545:
2546: }
2547: # Should be be killing off the 'include' elements as they're used up?
2548:
2549: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2550:
2551:
2552:
2553:
2554: # the colspan array will indicate how many columns will be spanned by this
2555: # cell..this requires that counter_columns also be adjusted accordingly
2556: # so that the next bunch of text goes in the right cell. Note that since
2557: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2558: #
2559:
2560: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2561: for (my $i = 0; $i < ($colspan -1); $i++) {
2562: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2563: }
2564: for (my $r = 0; $r < $rowspan; $r++) {
2565: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2566: # Put empty text in spanned cols.
2567:
2568: }
2569:
2570: }
2571:
2572: return '';
2573: }
2574:
2575: sub end_td {
2576: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2577: my $currentstring = '';
2578: if ($target eq 'web' || $target eq 'webgrade') {
2579: $currentstring = $token->[2];
2580: } elsif ($target eq 'tex') {
2581: $Apache::londefdef::TD_redirection =0;
2582: &end_td_tex($parstack,$parser,$safeeval);
2583: }
2584: return $currentstring;
2585: }
2586:
2587: #-- <th> tag (end tag optional)
2588: sub start_th {
2589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2590: my $currentstring = '';
2591: if ($target eq 'web' || $target eq 'webgrade') {
2592: $currentstring = $token->[4];
2593: } elsif ($target eq 'tex') {
2594: $Apache::londefdef::TD_redirection = 1;
2595: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2596: }
2597: return $currentstring;
2598: }
2599:
2600: sub tagg_check {
2601: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2602: my @ar=@$parstack;
2603: for (my $i=$#ar-1;$i>=0;$i--) {
2604: if (lc($$tagstack[$i]) eq $good_tag) {
2605: &start_th_tex($parstack,$parser,$safeeval);
2606: last;
2607: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2608: splice @ar, $i+1;
2609: &end_th_tex(\@ar,$parser,$safeeval);
2610: &start_th_tex($parstack,$parser,$safeeval);
2611: last;
2612: }
2613: }
2614: return '';
2615: }
2616:
2617: sub start_th_tex {
2618: my ($parstack,$parser,$safeeval) = @_;
2619:
2620: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2621: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2622: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2623:
2624: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2625: my $table = $Apache::londefdef::table[-1];
2626: $table->add_cell('\textbf{', $config);
2627:
2628: #-------------------------------------------------------------------------------------
2629: #
2630: # Old table code.
2631: #
2632: #--------------------------------------------------------------------------------------
2633:
2634: if (0) {
2635:
2636:
2637: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2638: if ($alignchar eq '') {
2639: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2640: }
2641: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2642: $Apache::londefdef::table[-1]{'counter_columns'}++;
2643: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2644: if (defined $TeXwidth) {
2645: my $current_length=&recalc($TeXwidth);
2646: $current_length=~/(\d+\.?\d*)/;
2647: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2648: }
2649: }
2650:
2651: # Accept xml until the </th> tag.
2652:
2653: &Apache::lonxml::startredirection();
2654: return '';
2655: }
2656:
2657: sub end_th_tex {
2658: my ($parstack,$parser,$safeeval) = @_;
2659:
2660: my $table = $Apache::londefdef::table[-1];
2661: my $text = &Apache::lonxml::endredirection();
2662: $table->append_cell_text($text.'}');
2663:
2664: #-----------------------------------------------------------------------------
2665: # Old table code:
2666: #-----------------------------------------------------------------------------
2667:
2668: if (0) {
2669: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2670: my $data=&Apache::lonxml::endredirection();
2671: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2672: if (defined $TeXwidth) {
2673: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2674: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2675: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2676: } else {
2677: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2678: my $garbage_data=$data;
2679: my $fwidth=0;
2680: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2681: my $current_length=&recalc($1);
2682: $current_length=~/(\d+\.?\d*)/;
2683: if ($fwidth<$1) {$fwidth=$1;}
2684: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2685: }
2686: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2687: my $current_length=$1;
2688: if ($fwidth<$current_length) {$fwidth=$current_length;}
2689: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2690: }
2691: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2692: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2693: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2694: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2695: } else {
2696: $data=~s/^\s+(\S.*)/$1/;
2697: $data=~s/(.*\S)\s+$/$1/;
2698: $data=~s/(\s)+/$1/;
2699: my ($current_length,$min_length)=(0,0);
2700: if ($data=~/\\vskip/) {
2701: my $newdata=$data;
2702: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2703: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2704: foreach my $elementdata (@newdata) {
2705: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2706: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2707: my @words=split(/ /,$elementdata);
2708: foreach my $word (@words) {
2709: my $lengthword=2.5*&LATEX_length($word);
2710: if ($min_length<$lengthword) {$min_length=$lengthword;}
2711: }
2712: }
2713: } else {
2714: $current_length=2.5*&LATEX_length($data);
2715: my @words=split(/ /,$data);
2716: foreach my $word (@words) {
2717: my $lengthword=2*&LATEX_length($word);
2718: if ($min_length<$lengthword) {$min_length=$lengthword;}
2719: }
2720: }
2721: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2722: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2723: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2724: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2725: }
2726: }
2727: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2728: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2729: }
2730: #make data bold
2731: $data='\textbf{'.$data.'}';
2732: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2733: }
2734: return'';
2735: }
2736:
2737: sub end_th {
2738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2739: my $currentstring = &end_p(); # Close any open <p> in the row.
2740: if ($target eq 'web' || $target eq 'webgrade') {
2741: $currentstring .= $token->[2];
2742: } elsif ($target eq 'tex') {
2743: $Apache::londefdef::TD_redirection =0;
2744: &end_th_tex($parstack,$parser,$safeeval);
2745: }
2746: return $currentstring;
2747: }
2748:
2749: #-- <img> tag (end tag forbidden)
2750: #
2751: # Render the <IMG> tag.
2752: # <IMG> has the following attributes (in addition to the
2753: # standard HTML ones:
2754: # TeXwrap - Governs how the tex target will try to wrap text around
2755: # horizontally aligned images.
2756: # TeXwidth - The width of the image when rendered for print (mm).
2757: # TeXheight - The height of the image when rendered for print (mm)
2758: # (Note there seems to also be support for this as a % of page size)
2759: #
2760: sub start_img {
2761: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2762: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2763: undef,1);
2764: if (! $src &&
2765: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2766: ) {
2767: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2768: return '';
2769: }
2770: unless ($src =~ m{^data\:image/gif;base64,}) {
2771: &Apache::lonxml::extlink($src);
2772: }
2773: my $currentstring = '';
2774: my $scaling = .3;
2775:
2776: # Render unto browsers that which are the browser's...
2777:
2778: if ($target eq 'web' || $target eq 'webgrade') {
2779: my $enc = ('yes' eq
2780: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2781: $safeeval)));
2782: unless ($src =~ m{^data\:image/gif;base64,}) {
2783: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2784: $enc);
2785: }
2786:
2787: # and render unto TeX that which is LaTeX
2788: } elsif ($target eq 'tex') {
2789: #
2790: # The alignment will require some superstructure to be put around
2791: # the \includegraphics stuff. At present we can only partially
2792: # simulate the alignments offered by html.
2793: #
2794: #
2795: my $align = lc(&Apache::lonxml::get_param('align',
2796: $parstack,
2797: $safeeval,
2798: undef,1));
2799: if(!$align) {
2800: $align = "bottom"; # This is html's default so it's ours too.
2801: }
2802: #
2803: &Apache::lonxml::debug("Alignemnt = $align");
2804: # LaTeX's image/text wrapping is really bad since it wants to
2805: # make figures float.
2806: # The user has the optional parameter (applicable only to l/r
2807: # alignment to use the picins/parpic directive to get wrapped text
2808: # this is also imperfect.. that's why we give them a choice...
2809: # so they can't yell at us for our choice.
2810: #
2811: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2812: $parstack,
2813: $safeeval,
2814: undef,0);
2815: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2816: if(!$latex_rendering) {
2817: $latex_rendering = "texwrap";
2818: }
2819: # using texwrap inside a table does not work. So, if after all of this,
2820: # texwrap is on, we turn it off if we detect we're in a table:
2821: #
2822: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2823: $latex_rendering = 'parpic';
2824: }
2825:
2826: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2827:
2828: #if original bmp/gif/jpg/png/svg file exist do following:
2829: my $origsrc=$src;
2830: my ($path,$file) = &get_eps_image($src);
2831: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2832: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2833: &Apache::lonxml::debug("path = $path file = $file src = $src");
2834: if (-e $src) {
2835: &Apache::lonxml::debug("$src exists");
2836: my ($height_param,$width_param)=
2837: &image_size($origsrc,0.3,$parstack,$safeeval);
2838: my $size;
2839: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2840: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2841: # Default size if not able to extract that (e.g. eps image).
2842:
2843: # &Apache::lonnet::logthis("Size = $size");
2844:
2845: $size='['.$size;
2846: $size=~s/,$/]/;
2847: $currentstring .= '\graphicspath{{'.$path.'}}'
2848: .'\includegraphics'.$size.'{'.$file.'} ';
2849: my $closure;
2850: ($currentstring, $closure) = &align_latex_image($align,
2851: $latex_rendering,
2852: $currentstring,
2853: $width_param,
2854: $height_param);
2855: $currentstring .= $closure;
2856:
2857: } else {
2858: &Apache::lonxml::debug("$src does not exist");
2859: #original image file doesn't exist so check the alt attribute
2860: my $alt =
2861: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2862: unless ($alt) {
2863: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2864: }
2865:
2866: if ($alt) { $currentstring .= ' '.$alt.' '; }
2867: }
2868:
2869: # And here's where the semi-quote breaks down: allow the user
2870: # to edit the beast as well by rendering the problem for edit:
2871: } elsif ($target eq 'edit') {
2872: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2873: $currentstring .=&Apache::edit::tag_start($target,$token);
2874: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2875: &Apache::edit::browse_or_search('src',undef,'alt',$only,undef,1).
2876: '<br />';
2877: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2878: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2879: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2880: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2881: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2882: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2883: ['','bottom','middle','top','left','right'],$token,5);
2884: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2885: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2886: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2887: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2888:
2889: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2890: ['no','yes'], $token, 2);
2891: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2892: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2893: }
2894: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2895: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2896: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2897: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2898: my $element = &Apache::edit::get_element('src');
2899: my $text;
2900: if ($token->[2]{'src'}=~/\$/) {
2901: $text = &mt('Variable image source');
2902: } elsif ($token->[2]{'src'}=~/\S/) {
2903: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2904: if ($width) { $currentstring.=' width="'.$width.'" '; }
2905: if ($height) { $currentstring.=' height="'.$height.'" '; }
2906: $currentstring .= ' id="previewimg_'.$element.'" />';
2907: } else {
2908: $text = &mt("No image source specified");
2909: }
2910: $currentstring .= ' <span id="showimg_'.$element.'">'.$text.'</span>';
2911: } elsif ($target eq 'modified') {
2912: my ($osrc,$owidth,$oheight)=
2913: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2914: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2915: $safeeval,'src','alt','align',
2916: 'TeXwidth','TeXheight', 'TeXwrap',
2917: 'width','height','encrypturl');
2918: my ($nsrc,$nwidth,$nheight)=
2919: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2920: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2921: &image_replication($loc);
2922: my ($iwidth,$iheight);
2923: if (-e $loc) {
2924: my $image = Image::Magick->new;
2925: $image->Read($loc);
2926: ($iwidth, $iheight) = ($image->Get('width'),
2927: $image->Get('height'));
2928: }
2929: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2930: # changed image or no size specified,
2931: # if they didn't explicitly change the
2932: # width or height use the ones from the image
2933: if ($iwidth && $iheight) {
2934: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2935: $token->[2]{'width'} = $iwidth;$ctag=1;
2936: }
2937: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2938: $token->[2]{'height'}=$iheight;$ctag=1;
2939: }
2940: }
2941: }
2942: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2943: # if we don't have a width or height
2944: if ($iwidth && $cwidth && !$cheight) {
2945: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2946: }
2947: if ($iheight && $cheight && !$cwidth) {
2948: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2949: }
2950: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2951: }
2952:
2953: return $currentstring;
2954: }
2955:
2956: sub end_img {
2957: my ($target,$token) = @_;
2958: my $currentstring = '';
2959: if ($target eq 'web' || $target eq 'webgrade') {
2960: $currentstring = $token->[2];
2961: } elsif ($target eq 'tex') {
2962: $currentstring = '';
2963: }
2964: return $currentstring;
2965: }
2966:
2967: #-- <applet> tag (end tag required)
2968: sub start_applet {
2969: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2970:
2971: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2972: &Apache::lonxml::extlink($code);
2973: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2974: undef,1);
2975: &Apache::lonxml::extlink($archive);
2976: my $currentstring = '';
2977: if ($target eq 'web' || $target eq 'webgrade') {
2978: $currentstring = $token->[4];
2979: } elsif ($target eq 'tex') {
2980: # Turn off some stuff we can't be inside thank you LaTeX
2981:
2982: my $restart_sub = 0;
2983: my $restart_sup = 0;
2984:
2985: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2986: # using the start_ stop_ functions.. those tags only care about
2987: # $target.
2988:
2989: if (&is_inside_of($tagstack, "sub")) {
2990: $restart_sub = 1;
2991: $currentstring .= &end_sub($target, $token, $tagstack,
2992: $parstack, $parser, $safeeval);
2993: }
2994: if (&is_inside_of($tagstack, "sup")) {
2995: $restart_sup = 1;
2996: $currentstring .= &end_sup($target, $token, $tagstack,
2997: $parstack, $parser, $safeeval);
2998: }
2999:
3000: # Now process the applet; just replace it with its alt attribute.
3001:
3002: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
3003: $safeeval,undef,1);
3004: unless ($alttag) {
3005: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
3006: undef,1);
3007: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3008: $code);
3009: }
3010: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3011: '.}\end{center}';
3012:
3013: # Turn stuff back on that we can't be inside of.
3014:
3015: if ($restart_sub) {
3016: $currentstring .= &start_sub($target, $token, $tagstack,
3017: $parstack, $parser, $safeeval);
3018: }
3019: if ($restart_sup) {
3020: $currentstring .= &start_sup($target, $token, $tagstack,
3021: $parstack, $parser, $safeeval);
3022: }
3023: }
3024: return $currentstring;
3025: }
3026:
3027: sub end_applet {
3028: my ($target,$token) = @_;
3029: my $currentstring = '';
3030: if ($target eq 'web' || $target eq 'webgrade') {
3031: $currentstring = $token->[2];
3032: } elsif ($target eq 'tex') {
3033: }
3034: return $currentstring;
3035: }
3036:
3037: #-- <embed> tag (end tag optional/required)
3038: sub start_embed {
3039: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3040: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3041: &Apache::lonxml::extlink($src);
3042: my $currentstring = '';
3043: if ($target eq 'web' || $target eq 'webgrade') {
3044: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3045: } elsif ($target eq 'tex') {
3046: }
3047: return $currentstring;
3048: }
3049:
3050: sub end_embed {
3051: my ($target,$token) = @_;
3052: my $currentstring = '';
3053: if ($target eq 'web' || $target eq 'webgrade') {
3054: $currentstring = $token->[2];
3055: } elsif ($target eq 'tex') {
3056: # ./.
3057: }
3058: return $currentstring;
3059: }
3060:
3061: #-- <param> tag (end tag forbidden)
3062: sub start_param {
3063: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3064: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3065: undef,1);
3066: if ($name =~/^cabbase$/i) {
3067: my $value=&Apache::lonxml::get_param('value',$parstack,
3068: $safeeval,undef,1);
3069: &Apache::lonxml::extlink($value);
3070: } elsif ($name eq 'flashvars') {
3071: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3072: eq 'application/x-shockwave-flash') {
3073: my $launcher =
3074: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3075: if ($launcher) {
3076: &Apache::lonxml::extlink($launcher);
3077: }
3078: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3079: $safeeval,undef,1);
3080: if ($flashvars ne '') {
3081: foreach my $item (split(/\&/,$flashvars)) {
3082: my ($key,$value)=split(/=/,$item,2);
3083: if ($key eq 'content') {
3084: if ($value ne '') {
3085: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3086: &Apache::lonxml::extlink($dir.$value);
3087: }
3088: } elsif ($key eq 'thumb') {
3089: if ($value ne '') {
3090: &Apache::lonxml::extlink($value);
3091: }
3092: }
3093: }
3094: }
3095: }
3096: }
3097: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3098: if ($src ne '') {
3099: &Apache::lonxml::extlink($src);
3100: }
3101: my $currentstring = '';
3102: if ($target eq 'web' || $target eq 'webgrade') {
3103: my %toconvert;
3104: if ($src) { $toconvert{'src'}= $src; }
3105: if ($name=~/^cabbase$/i) {
3106: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3107: $safeeval,undef,1);
3108: }
3109: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3110: } elsif ($target eq 'tex') {
3111: }
3112: return $currentstring;
3113: }
3114:
3115: sub end_param {
3116: my ($target,$token) = @_;
3117: my $currentstring = '';
3118: if ($target eq 'web' || $target eq 'webgrade') {
3119: $currentstring = $token->[2];
3120: } elsif ($target eq 'tex') {
3121: }
3122: return $currentstring;
3123: }
3124:
3125: #-- <allow> tag
3126: sub start_allow {
3127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3128: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3129: &Apache::lonxml::extlink($src);
3130:
3131: if ($target eq 'tex') { &image_replication($src); }
3132: my $result;
3133: if ($target eq 'edit') {
3134: $result .=&Apache::edit::tag_start($target,$token);
3135: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3136: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3137: } elsif ($target eq 'modified') {
3138: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3139: $safeeval,'src');
3140: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3141: }
3142: return $result;
3143: }
3144:
3145: sub end_allow {
3146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3147: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3148: return '';
3149: }
3150:
3151: #-- Frames (end tag required)
3152: #-- <frameset>
3153: sub start_frameset {
3154: my ($target,$token) = @_;
3155: my $currentstring = ''; # Close any pending para.
3156: if ($target eq 'web' || $target eq 'webgrade') {
3157: $currentstring =
3158: &Apache::loncommon::start_page($Apache::londefdef::title,
3159: $Apache::londefdef::head,
3160: {'add_entries' => $token->[2],
3161: # 'no_title' => 1,
3162: 'force_register' => 1,
3163: 'frameset' => 1,});
3164:
3165: }
3166: return $currentstring;
3167: }
3168:
3169: sub end_frameset {
3170: my ($target,$token) = @_;
3171: my $currentstring = '';
3172: if ($target eq 'web' || $target eq 'webgrade') {
3173: $currentstring = $token->[2];
3174: }
3175: return $currentstring;
3176: }
3177:
3178: #-- <xmp> (end tag required)
3179: sub start_xmp {
3180: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web' || $target eq 'webgrade') {
3183: $currentstring .= $token->[4];
3184: } elsif ($target eq 'tex') {
3185: $currentstring .= '\begin{verbatim}';
3186: }
3187: return $currentstring;
3188: }
3189:
3190: sub end_xmp {
3191: my ($target,$token) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web' || $target eq 'webgrade') {
3194: $currentstring .= $token->[2];
3195: } elsif ($target eq 'tex') {
3196: $currentstring .= '\end{verbatim}';
3197: }
3198: return $currentstring;
3199: }
3200:
3201: #-- <pre> (end tag required)
3202: sub start_pre {
3203: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3204: my $currentstring = &end_p(); # close off pending <p>
3205: if ($target eq 'web' || $target eq 'webgrade') {
3206: $currentstring .= $token->[4];
3207: } elsif ($target eq 'tex') {
3208: $currentstring .= '\begin{verbatim}';
3209: &Apache::lonxml::disable_LaTeX_substitutions();
3210: }
3211: return $currentstring;
3212: }
3213:
3214: sub end_pre {
3215: my ($target,$token) = @_;
3216: my $currentstring = '';
3217: if ($target eq 'web' || $target eq 'webgrade') {
3218: $currentstring .= $token->[2];
3219: } elsif ($target eq 'tex') {
3220: $currentstring .= '\end{verbatim}';
3221: &Apache::lonxml::enable_LaTeX_substitutions();
3222: }
3223: return $currentstring;
3224: }
3225:
3226: #-- <insert>
3227: sub start_insert {
3228: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3229: my $currentstring = '';
3230: if ($target eq 'web' || $target eq 'webgrade') {
3231: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3232: $currentstring .= '<b>'.$display.'</b>';;
3233: }
3234: return $currentstring;
3235: }
3236:
3237: sub end_insert {
3238: my ($target,$token) = @_;
3239: my $currentstring = '';
3240: if ($target eq 'web' || $target eq 'webgrade') {
3241: $currentstring .= '';
3242: }
3243: return $currentstring;
3244: }
3245:
3246: #-- <externallink>
3247: sub start_externallink {
3248: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3249: my $currentstring = '';
3250: if ($target eq 'web' || $target eq 'webgrade') {
3251: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3252: $currentstring .= '<b>'.$display.'</b>';;
3253: }
3254: return $currentstring;
3255: }
3256:
3257: sub end_externallink {
3258: my ($target,$token) = @_;
3259: my $currentstring = '';
3260: if ($target eq 'web' || $target eq 'webgrade') {
3261: $currentstring .= '';
3262: }
3263: return $currentstring;
3264: }
3265:
3266: #-- <blankspace heigth="">
3267: sub start_blankspace {
3268: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3269: my $currentstring = &end_p(); # closes off any unclosed <p>
3270: if ($target eq 'tex') {
3271: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3272: $currentstring .= '\vskip '.$howmuch.' ';
3273: }
3274: return $currentstring;
3275: }
3276:
3277: sub end_blankspace {
3278: my ($target,$token) = @_;
3279: my $currentstring = '';
3280: if ($target eq 'tex') {
3281: $currentstring .= '';
3282: }
3283: return $currentstring;
3284: }
3285:
3286: #-- <abbr> tag (end tag required)
3287: sub start_abbr {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'web' || $target eq 'webgrade') {
3291: $currentstring = $token->[4];
3292: }
3293: return $currentstring;
3294: }
3295:
3296: sub end_abbr {
3297: my ($target,$token) = @_;
3298: my $currentstring = '';
3299: if ($target eq 'web' || $target eq 'webgrade') {
3300: $currentstring = $token->[2];
3301: }
3302: return $currentstring;
3303: }
3304:
3305: #-- <acronym> tag (end tag required)
3306: sub start_acronym {
3307: my ($target,$token) = @_;
3308: my $currentstring = '';
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring = $token->[4];
3311: }
3312: return $currentstring;
3313: }
3314:
3315: sub end_acronym {
3316: my ($target,$token) = @_;
3317: my $currentstring = '';
3318: if ($target eq 'web' || $target eq 'webgrade') {
3319: $currentstring = $token->[2];
3320: }
3321: return $currentstring;
3322: }
3323:
3324: #-- <area> tag (end tag forbidden)
3325: sub start_area {
3326: my ($target,$token) = @_;
3327: my $currentstring = '';
3328: if ($target eq 'web' || $target eq 'webgrade') {
3329: $currentstring = $token->[4];
3330: }
3331: return $currentstring;
3332: }
3333:
3334: sub end_area {
3335: my ($target,$token) = @_;
3336: my $currentstring = '';
3337: if ($target eq 'web' || $target eq 'webgrade') {
3338: $currentstring = $token->[2];
3339: }
3340: return $currentstring;
3341: }
3342:
3343: #-- <base> tag (end tag forbidden)
3344: sub start_base {
3345: my ($target,$token) = @_;
3346: my $currentstring = '';
3347: if ($target eq 'web' || $target eq 'webgrade') {
3348: $currentstring = $token->[4];
3349: }
3350: return $currentstring;
3351: }
3352:
3353: sub end_base {
3354: my ($target,$token) = @_;
3355: my $currentstring = '';
3356: if ($target eq 'web' || $target eq 'webgrade') {
3357: $currentstring = $token->[2];
3358: }
3359: return $currentstring;
3360: }
3361:
3362: #-- <bdo> tag (end tag required)
3363: sub start_bdo {
3364: my ($target,$token) = @_;
3365: my $currentstring = '';
3366: if ($target eq 'web' || $target eq 'webgrade') {
3367: $currentstring = $token->[4];
3368: }
3369: return $currentstring;
3370: }
3371:
3372: sub end_bdo {
3373: my ($target,$token) = @_;
3374: my $currentstring = '';
3375: if ($target eq 'web' || $target eq 'webgrade') {
3376: $currentstring = $token->[2];
3377: }
3378: return $currentstring;
3379: }
3380:
3381: #-- <bgsound> tag (end tag optional)
3382: sub start_bgsound {
3383: my ($target,$token) = @_;
3384: my $currentstring = '';
3385: if ($target eq 'web' || $target eq 'webgrade') {
3386: $currentstring = $token->[4];
3387: }
3388: return $currentstring;
3389: }
3390:
3391: sub end_bgsound {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: $currentstring = $token->[2];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: #-- <blink> tag (end tag required)
3401: sub start_blink {
3402: my ($target,$token) = @_;
3403: my $currentstring = '';
3404: if ($target eq 'web' || $target eq 'webgrade') {
3405: $currentstring = $token->[4];
3406: }
3407: return $currentstring;
3408: }
3409:
3410: sub end_blink {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring = $token->[2];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: #-- <blockquote> tag (end tag required)
3420: sub start_blockquote {
3421: my ($target,$token) = @_;
3422: my $currentstring = &end_p(); # Close any unclosed <p>
3423: if ($target eq 'web' || $target eq 'webgrade') {
3424: $currentstring .= $token->[4];
3425: }
3426: if ($target eq 'tex') {
3427: $currentstring .= '\begin{quote}';
3428: }
3429: return $currentstring;
3430: }
3431:
3432: sub end_blockquote {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web' || $target eq 'webgrade') {
3436: $currentstring = $token->[2];
3437: }
3438: if ($target eq 'tex') {
3439: $currentstring = '\end{quote}';
3440: }
3441: return $currentstring;
3442: }
3443:
3444: #-- <button> tag (end tag required)
3445: sub start_button {
3446: my ($target,$token) = @_;
3447: my $currentstring = '';
3448: if ($target eq 'web' || $target eq 'webgrade') {
3449: $currentstring = $token->[4];
3450: }
3451: return $currentstring;
3452: }
3453:
3454: sub end_button {
3455: my ($target,$token) = @_;
3456: my $currentstring = '';
3457: if ($target eq 'web' || $target eq 'webgrade') {
3458: $currentstring = $token->[2];
3459: }
3460: return $currentstring;
3461: }
3462:
3463: #-- <caption> tag (end tag required)
3464: sub start_caption {
3465: my ($target,$token) = @_;
3466: my $currentstring = '';
3467: if ($target eq 'web' || $target eq 'webgrade') {
3468: $currentstring = $token->[4];
3469: }
3470: return $currentstring;
3471: }
3472:
3473: sub end_caption {
3474: my ($target,$token) = @_;
3475: my $currentstring = '';
3476: if ($target eq 'web' || $target eq 'webgrade') {
3477: $currentstring = $token->[2];
3478: }
3479: return $currentstring;
3480: }
3481:
3482: #-- <col> tag (end tag forbdden)
3483: sub start_col {
3484: my ($target,$token) = @_;
3485: my $currentstring = '';
3486: if ($target eq 'web' || $target eq 'webgrade') {
3487: $currentstring = $token->[4];
3488: }
3489: return $currentstring;
3490: }
3491:
3492: sub end_col {
3493: my ($target,$token) = @_;
3494: my $currentstring = '';
3495: if ($target eq 'web' || $target eq 'webgrade') {
3496: $currentstring = $token->[2];
3497: }
3498: return $currentstring;
3499: }
3500:
3501: #-- <colgroup tag (end tag optional)
3502: sub start_colgroup {
3503: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3504: my $currentstring = '';
3505: if ($target eq 'web' || $target eq 'webgrade') {
3506: $currentstring = $token->[4];
3507: }
3508: if ($target eq 'tex') {
3509: # TODO: Ensure this tag is in a table:
3510:
3511: # Fetch the attributes and build the hash for the
3512: # call to define_colgroup.
3513:
3514: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3515: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3516:
3517: my %colgroup_params;
3518: if ($span ne '') {
3519: $colgroup_params{'span'} = $span;
3520: }
3521: if ($halign ne '') {
3522: $colgroup_params{'halign'} = $halign;
3523: }
3524:
3525: my $table = $Apache::londefdef::table[-1];
3526: $table->define_colgroup(\%colgroup_params);
3527:
3528: }
3529: return $currentstring;
3530: }
3531:
3532: sub end_colgroup {
3533: my ($target,$token) = @_;
3534: my $currentstring = '';
3535: if ($target eq 'web' || $target eq 'webgrade') {
3536: $currentstring = $token->[2];
3537: }
3538: return $currentstring;
3539: }
3540:
3541:
3542: #-- <del> tag (end tag required)
3543: sub start_del {
3544: my ($target,$token) = @_;
3545: my $currentstring = '';
3546: if ($target eq 'web' || $target eq 'webgrade') {
3547: $currentstring = $token->[4];
3548: } elsif ($target eq 'tex') {
3549: &disable_para();
3550: $currentstring .= '\st{';
3551: }
3552: return $currentstring;
3553: }
3554:
3555: sub end_del {
3556: my ($target,$token) = @_;
3557: my $currentstring = '';
3558: if ($target eq 'web' || $target eq 'webgrade') {
3559: $currentstring = $token->[2];
3560: } elsif ($target eq 'tex') {
3561: &enable_para();
3562: $currentstring = '}';
3563: }
3564: return $currentstring;
3565: }
3566:
3567: #-- <fieldset> tag (end tag required)
3568: sub start_fieldset {
3569: my ($target,$token) = @_;
3570: my $currentstring = '';
3571: if ($target eq 'web' || $target eq 'webgrade') {
3572: $currentstring = $token->[4];
3573: }
3574: return $currentstring;
3575: }
3576:
3577: sub end_fieldset {
3578: my ($target,$token) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web' || $target eq 'webgrade') {
3581: $currentstring = $token->[2];
3582: }
3583: return $currentstring;
3584: }
3585:
3586: #-- <frame> tag (end tag forbidden)
3587: sub start_frame {
3588: my ($target,$token) = @_;
3589: my $currentstring = '';
3590: if ($target eq 'web' || $target eq 'webgrade') {
3591: $currentstring = $token->[4];
3592: }
3593: return $currentstring;
3594: }
3595:
3596: sub end_frame {
3597: my ($target,$token) = @_;
3598: my $currentstring = '';
3599: if ($target eq 'web' || $target eq 'webgrade') {
3600: $currentstring = $token->[2];
3601: }
3602: return $currentstring;
3603: }
3604:
3605: #-- <iframe> tag (end tag required)
3606: sub start_iframe {
3607: my ($target,$token) = @_;
3608: my $currentstring = '';
3609: if ($target eq 'web' || $target eq 'webgrade') {
3610: my ($src,$url,$query);
3611: if ($token->[2]->{'src'}) {
3612: $src = $token->[2]->{'src'};
3613: } elsif ($token->[2]->{'SRC'}) {
3614: $src = $token->[2]->{'SRC'};
3615: }
3616: if ($src) {
3617: ($url,$query) = ($src =~ /^([^?]+)\??([^?]*)$/);
3618: if ($query =~ /inhibitmenu=yes/) {
3619: $currentstring = $token->[4];
3620: } else {
3621: my $inhibit;
3622: if ($url =~ m{^[^/.].*\.x?html?$}) {
3623: $inhibit = 1;
3624: } elsif ($url =~ m{^/(uploaded|res)/.*\.x?html?$}) {
3625: $inhibit = 1;
3626: }
3627: if ($inhibit) {
3628: $currentstring = '<iframe ';
3629: foreach my $attrib (@{$token->[3]}) {
3630: if (lc($attrib) eq 'src') {
3631: if ($query) {
3632: $query.='&inhibitmenu=yes';
3633: } else {
3634: $query = 'inhibitmenu=yes';
3635: }
3636: $currentstring .= 'src="'.$url.'?'.$query.'" ';
3637: } else {
3638: $currentstring .= lc($attrib).'="'.$token->[2]->{$attrib}.'" ';
3639: }
3640: }
3641: $currentstring =~ s/\s+$//;
3642: if ($token->[4] =~ m{/>$}) {
3643: $currentstring .= ' />';
3644: } else {
3645: $currentstring .= '>';
3646: }
3647: } else {
3648: $currentstring = $token->[4];
3649: }
3650: }
3651: if (($url !~ m{^https?://}) && ($env{'request.course.id'})) {
3652: my $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
3653: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3654: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3655: if ($url =~ m{^([^/]|/uploaded/)}) {
3656: my $cleanhref = &clean_docs_httpref($url,$docuri,$cdom,$cnum);
3657: if ($cleanhref) {
3658: &Apache::lonxml::extlink($cleanhref);
3659: }
3660: } elsif (($url =~ m{/res/$LONCAPA::domain_re/}) && ($docuri =~ m{^\Q/uploaded/$cdom/$cnum/docs/\E})) {
3661: if (!&Apache::lonnet::allowed('bre',$url)) {
3662: if (&Apache::lonnet::is_on_map($url)) {
3663: &Apache::lonxml::extlink($url);
3664: }
3665: }
3666: }
3667: }
3668: } else {
3669: $currentstring = $token->[4];
3670: }
3671: }
3672: return $currentstring;
3673: }
3674:
3675: sub end_iframe {
3676: my ($target,$token) = @_;
3677: my $currentstring = '';
3678: if ($target eq 'web' || $target eq 'webgrade') {
3679: $currentstring = $token->[2];
3680: }
3681: return $currentstring;
3682: }
3683:
3684: #-- <ins> tag (end tag required)
3685: sub start_ins {
3686: my ($target,$token) = @_;
3687: my $currentstring = '';
3688: if ($target eq 'web' || $target eq 'webgrade') {
3689: $currentstring = $token->[4];
3690: }
3691: return $currentstring;
3692: }
3693:
3694: sub end_ins {
3695: my ($target,$token) = @_;
3696: my $currentstring = '';
3697: if ($target eq 'web' || $target eq 'webgrade') {
3698: $currentstring = $token->[2];
3699: }
3700: return $currentstring;
3701: }
3702:
3703: #-- <isindex> tag (end tag forbidden)
3704: sub start_isindex {
3705: my ($target,$token) = @_;
3706: my $currentstring = '';
3707: if ($target eq 'web' || $target eq 'webgrade') {
3708: $currentstring = $token->[4];
3709: }
3710: return $currentstring;
3711: }
3712:
3713: sub end_isindex {
3714: my ($target,$token) = @_;
3715: my $currentstring = '';
3716: if ($target eq 'web' || $target eq 'webgrade') {
3717: $currentstring = $token->[2];
3718: }
3719: return $currentstring;
3720: }
3721:
3722: #-- <keygen> tag (end tag forbidden)
3723: sub start_keygen {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web' || $target eq 'webgrade') {
3727: $currentstring = $token->[4];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: sub end_keygen {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web' || $target eq 'webgrade') {
3736: $currentstring = $token->[2];
3737: }
3738: return $currentstring;
3739: }
3740:
3741: #-- <label> tag
3742: sub start_label {
3743: my ($target,$token) = @_;
3744: my $currentstring = '';
3745: if ($target eq 'web' || $target eq 'webgrade') {
3746: $currentstring = $token->[4];
3747: }
3748: return $currentstring;
3749: }
3750:
3751: sub end_label {
3752: my ($target,$token) = @_;
3753: my $currentstring = '';
3754: if ($target eq 'web' || $target eq 'webgrade') {
3755: $currentstring = $token->[2];
3756: }
3757: return $currentstring;
3758: }
3759:
3760: #-- <layer> tag (end tag required)
3761: sub start_layer {
3762: my ($target,$token) = @_;
3763: my $currentstring = '';
3764: if ($target eq 'web' || $target eq 'webgrade') {
3765: $currentstring = $token->[4];
3766: }
3767: return $currentstring;
3768: }
3769:
3770: sub end_layer {
3771: my ($target,$token) = @_;
3772: my $currentstring = '';
3773: if ($target eq 'web' || $target eq 'webgrade') {
3774: $currentstring = $token->[2];
3775: }
3776: return $currentstring;
3777: }
3778:
3779: #-- <legend> tag (end tag required)
3780: sub start_legend {
3781: my ($target,$token) = @_;
3782: my $currentstring = '';
3783: if ($target eq 'web' || $target eq 'webgrade') {
3784: $currentstring = $token->[4];
3785: }
3786: return $currentstring;
3787: }
3788:
3789: sub end_legend {
3790: my ($target,$token) = @_;
3791: my $currentstring = '';
3792: if ($target eq 'web' || $target eq 'webgrade') {
3793: $currentstring = $token->[2];
3794: }
3795: return $currentstring;
3796: }
3797:
3798: #-- <link> tag (end tag forbidden)
3799: sub start_link {
3800: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3801: my $currentstring = '';
3802: if ($target eq 'web' || $target eq 'webgrade') {
3803: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3804: undef,1);
3805: &Apache::lonxml::extlink($href);
3806: $currentstring = $token->[4];
3807: }
3808: return $currentstring;
3809: }
3810:
3811: sub end_link {
3812: my ($target,$token) = @_;
3813: my $currentstring = '';
3814: if ($target eq 'web' || $target eq 'webgrade') {
3815: $currentstring = $token->[2];
3816: }
3817: return $currentstring;
3818: }
3819:
3820: #-- <marquee> tag (end tag optional)
3821: sub start_marquee {
3822: my ($target,$token) = @_;
3823: my $currentstring = '';
3824: if ($target eq 'web' || $target eq 'webgrade') {
3825: $currentstring = $token->[4];
3826: }
3827: return $currentstring;
3828: }
3829:
3830: sub end_marquee {
3831: my ($target,$token) = @_;
3832: my $currentstring = '';
3833: if ($target eq 'web' || $target eq 'webgrade') {
3834: $currentstring = $token->[2];
3835: }
3836: return $currentstring;
3837: }
3838:
3839: #-- <multicol> tag (end tag required)
3840: sub start_multicol {
3841: my ($target,$token) = @_;
3842: my $currentstring = &end_p(); # Close any pending <p>
3843: if ($target eq 'web' || $target eq 'webgrade') {
3844: $currentstring .= $token->[4];
3845: }
3846: return $currentstring;
3847: }
3848:
3849: sub end_multicol {
3850: my ($target,$token) = @_;
3851: my $currentstring = '';
3852: if ($target eq 'web' || $target eq 'webgrade') {
3853: $currentstring = $token->[2];
3854: }
3855: return $currentstring;
3856: }
3857:
3858: #-- <nobr> tag (end tag required)
3859: sub start_nobr {
3860: my ($target,$token) = @_;
3861: my $currentstring = '';
3862: if ($target eq 'web' || $target eq 'webgrade') {
3863: $currentstring = $token->[4];
3864: } elsif ($target eq 'tex') {
3865: $currentstring='\mbox{';
3866: }
3867: return $currentstring;
3868: }
3869:
3870: sub end_nobr {
3871: my ($target,$token) = @_;
3872: my $currentstring = '';
3873: if ($target eq 'web' || $target eq 'webgrade') {
3874: $currentstring = $token->[2];
3875: } elsif ($target eq 'tex') {
3876: $currentstring='}';
3877: }
3878: return $currentstring;
3879: }
3880:
3881: #-- <noembed> tag (end tag required)
3882: sub start_noembed {
3883: my ($target,$token) = @_;
3884: my $currentstring = '';
3885: if ($target eq 'web' || $target eq 'webgrade') {
3886: $currentstring = $token->[4];
3887: }
3888: return $currentstring;
3889: }
3890:
3891: sub end_noembed {
3892: my ($target,$token) = @_;
3893: my $currentstring = '';
3894: if ($target eq 'web' || $target eq 'webgrade') {
3895: $currentstring = $token->[2];
3896: }
3897: return $currentstring;
3898: }
3899:
3900: #-- <noframes> tag (end tag required)
3901: sub start_noframes {
3902: my ($target,$token) = @_;
3903: my $currentstring = '';
3904: if ($target eq 'web' || $target eq 'webgrade') {
3905: $currentstring = $token->[4];
3906: }
3907: return $currentstring;
3908: }
3909:
3910: sub end_noframes {
3911: my ($target,$token) = @_;
3912: my $currentstring = '';
3913: if ($target eq 'web' || $target eq 'webgrade') {
3914: $currentstring = $token->[2];
3915: }
3916: return $currentstring;
3917: }
3918:
3919: #-- <nolayer> tag (end tag required)
3920: sub start_nolayer {
3921: my ($target,$token) = @_;
3922: my $currentstring = '';
3923: if ($target eq 'web' || $target eq 'webgrade') {
3924: $currentstring = $token->[4];
3925: }
3926: return $currentstring;
3927: }
3928:
3929: sub end_nolayer {
3930: my ($target,$token) = @_;
3931: my $currentstring = '';
3932: if ($target eq 'web' || $target eq 'webgrade') {
3933: $currentstring = $token->[2];
3934: }
3935: return $currentstring;
3936: }
3937:
3938: #-- <noscript> tag (end tag required)
3939: sub start_noscript {
3940: my ($target,$token) = @_;
3941: my $currentstring = '';
3942: if ($target eq 'web' || $target eq 'webgrade') {
3943: $currentstring = $token->[4];
3944: }
3945: return $currentstring;
3946: }
3947:
3948: sub end_noscript {
3949: my ($target,$token) = @_;
3950: my $currentstring = '';
3951: if ($target eq 'web' || $target eq 'webgrade') {
3952: $currentstring = $token->[2];
3953: }
3954: return $currentstring;
3955: }
3956:
3957: #-- <object> tag (end tag required)
3958: sub start_object {
3959: my ($target,$token) = @_;
3960: my $currentstring = '';
3961: if ($target eq 'web' || $target eq 'webgrade') {
3962: $currentstring = $token->[4];
3963: }
3964: return $currentstring;
3965: }
3966:
3967: sub end_object {
3968: my ($target,$token) = @_;
3969: my $currentstring = '';
3970: if ($target eq 'web' || $target eq 'webgrade') {
3971: $currentstring = $token->[2];
3972: }
3973: return $currentstring;
3974: }
3975:
3976: #-- <optgroup> tag (end tag required)
3977: sub start_optgroup {
3978: my ($target,$token) = @_;
3979: my $currentstring = '';
3980: if ($target eq 'web' || $target eq 'webgrade') {
3981: $currentstring = $token->[4];
3982: }
3983: return $currentstring;
3984: }
3985:
3986: sub end_optgroup {
3987: my ($target,$token) = @_;
3988: my $currentstring = '';
3989: if ($target eq 'web' || $target eq 'webgrade') {
3990: $currentstring = $token->[2];
3991: }
3992: return $currentstring;
3993: }
3994:
3995: #-- <samp> tag (end tag required)
3996: sub start_samp {
3997: my ($target,$token) = @_;
3998: my $currentstring = '';
3999: if ($target eq 'web' || $target eq 'webgrade') {
4000: $currentstring = $token->[4];
4001: } elsif ($target eq 'tex') {
4002: $currentstring='\texttt{';
4003: }
4004: return $currentstring;
4005: }
4006:
4007: sub end_samp {
4008: my ($target,$token) = @_;
4009: my $currentstring = '';
4010: if ($target eq 'web' || $target eq 'webgrade') {
4011: $currentstring = $token->[2];
4012: } elsif ($target eq 'tex') {
4013: $currentstring='}';
4014: }
4015: return $currentstring;
4016: }
4017:
4018: #-- <server> tag
4019: sub start_server {
4020: my ($target,$token) = @_;
4021: my $currentstring = '';
4022: if ($target eq 'web' || $target eq 'webgrade') {
4023: $currentstring = $token->[4];
4024: }
4025: return $currentstring;
4026: }
4027:
4028: sub end_server {
4029: my ($target,$token) = @_;
4030: my $currentstring = '';
4031: if ($target eq 'web' || $target eq 'webgrade') {
4032: $currentstring = $token->[2];
4033: }
4034: return $currentstring;
4035: }
4036:
4037: #-- <spacer> tag (end tag forbidden)
4038: sub start_spacer {
4039: my ($target,$token) = @_;
4040: my $currentstring = &end_p(); # Close off any open <p> tag.
4041: if ($target eq 'web' || $target eq 'webgrade') {
4042: $currentstring .= $token->[4];
4043: }
4044: return $currentstring;
4045: }
4046:
4047: sub end_spacer {
4048: my ($target,$token) = @_;
4049: my $currentstring = '';
4050: if ($target eq 'web' || $target eq 'webgrade') {
4051: $currentstring = $token->[2];
4052: }
4053: return $currentstring;
4054: }
4055:
4056: #-- <span> tag (end tag required)
4057: sub start_span {
4058: my ($target,$token) = @_;
4059: my $currentstring = '';
4060: if ($target eq 'web' || $target eq 'webgrade') {
4061: $currentstring = $token->[4];
4062: }
4063: return $currentstring;
4064: }
4065:
4066: sub end_span {
4067: my ($target,$token) = @_;
4068: my $currentstring = '';
4069: if ($target eq 'web' || $target eq 'webgrade') {
4070: $currentstring = $token->[2];
4071: }
4072: return $currentstring;
4073: }
4074:
4075: #-- <tbody> tag (end tag optional)
4076: sub start_tbody {
4077: my ($target,$token) = @_;
4078: my $currentstring = '';
4079: if ($target eq 'web' || $target eq 'webgrade') {
4080: $currentstring = $token->[4];
4081: }
4082: if ($target eq 'tex') {
4083: # TODO: Ensure this tag is within a table:
4084:
4085: my $table = $Apache::londefdef::table[-1];
4086: $table->start_body();
4087: }
4088: return $currentstring;
4089: }
4090:
4091: sub end_tbody {
4092: my ($target,$token) = @_;
4093: my $currentstring = '';
4094: if ($target eq 'web' || $target eq 'webgrade') {
4095: $currentstring = $token->[2];
4096: }
4097: if($target eq 'tex') {
4098: # TODO: Ensure this tag is within a table:
4099:
4100: my $table = $Apache::londefdef::table[-1];
4101: $table->end_body();
4102: }
4103: return $currentstring;
4104: }
4105:
4106: #-- <tfoot> tag (end tag optional)
4107: sub start_tfoot {
4108: my ($target,$token) = @_;
4109: my $currentstring = '';
4110: if ($target eq 'web' || $target eq 'webgrade') {
4111: $currentstring = $token->[4];
4112: }
4113: if ($target eq 'tex') {
4114: # TODO: ensure this is within a table tag.
4115: my $table = $Apache::londefdef::table[-1];
4116: $table->start_foot();
4117: }
4118: return $currentstring;
4119: }
4120:
4121: sub end_tfoot {
4122: my ($target,$token) = @_;
4123: my $currentstring = '';
4124: if ($target eq 'web' || $target eq 'webgrade') {
4125: $currentstring = $token->[2];
4126: }
4127: if ($target eq 'tex') {
4128: # TODO: Ensure this is in side a table
4129: my $table = $Apache::londefdef::table[-1];
4130: $table->end_foot();
4131: }
4132: return $currentstring;
4133: }
4134:
4135: #-- <thead> tag (end tag optional)
4136: sub start_thead {
4137: my ($target,$token) = @_;
4138: my $currentstring = '';
4139: if ($target eq 'web' || $target eq 'webgrade') {
4140: $currentstring = $token->[4];
4141: }
4142: if ($target eq 'tex') {
4143: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4144: my $table = $Apache::londefdef::table[-1];
4145: $table->start_head();
4146: }
4147: return $currentstring;
4148: }
4149:
4150: sub end_thead {
4151: my ($target,$token) = @_;
4152: my $currentstring = '';
4153: if ($target eq 'web' || $target eq 'webgrade') {
4154: $currentstring = $token->[2];
4155: }
4156: if ($target eq 'tex') {
4157: # TODO: Verify we are in a table and ignore tag if not.
4158:
4159: my $table = $Apache::londefdef::table[-1];
4160: $table->end_head();
4161: }
4162: return $currentstring;
4163: }
4164:
4165: #-- <var> tag
4166: sub start_var {
4167: my ($target,$token) = @_;
4168: my $currentstring = '';
4169: if ($target eq 'web' || $target eq 'webgrade') {
4170: $currentstring = $token->[4];
4171: } elsif ($target eq 'tex') {
4172: $currentstring = '\textit{';
4173: }
4174: return $currentstring;
4175: }
4176:
4177: sub end_var {
4178: my ($target,$token) = @_;
4179: my $currentstring = '';
4180: if ($target eq 'web' || $target eq 'webgrade') {
4181: $currentstring = $token->[2];
4182: } elsif ($target eq 'tex') {
4183: $currentstring = '}';
4184: }
4185: return $currentstring;
4186: }
4187:
4188: #-- <wbr> tag (end tag forbidden)
4189: sub start_wbr {
4190: my ($target,$token) = @_;
4191: my $currentstring = '';
4192: if ($target eq 'web' || $target eq 'webgrade') {
4193: $currentstring = $token->[4];
4194: }
4195: return $currentstring;
4196: }
4197:
4198: sub end_wbr {
4199: my ($target,$token) = @_;
4200: my $currentstring = '';
4201: if ($target eq 'web' || $target eq 'webgrade') {
4202: $currentstring = $token->[2];
4203: }
4204: return $currentstring;
4205: }
4206:
4207: #-- <hideweboutput> tag
4208: sub start_hideweboutput {
4209: my ($target,$token) = @_;
4210: if ($target eq 'web' || $target eq 'webgrade') {
4211: &Apache::lonxml::startredirection();
4212: }
4213: return '';
4214: }
4215:
4216: sub end_hideweboutput {
4217: my ($target,$token) = @_;
4218: my $currentstring = '';
4219: if ($target eq 'web' || $target eq 'webgrade') {
4220: $currentstring = &Apache::lonxml::endredirection();
4221: }
4222: return '';
4223: }
4224:
4225:
4226: sub image_replication {
4227: my $src = shift;
4228: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4229: #replicates eps or ps
4230: my $epssrc = my $pssrc = $src;
4231: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4232: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4233: if (not -e $epssrc && not -e $pssrc) {
4234: my $result=&Apache::lonnet::repcopy($epssrc);
4235: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4236: }
4237: return '';
4238: }
4239:
4240:
4241:
4242: sub resize_image {
4243: my ($height_param, $width_param, $scaling,
4244: $parstack, $safeeval, $depth, $cis) = @_;
4245:
4246: # First apply the scaling...
4247:
4248: $height_param = $height_param * $scaling;
4249: $width_param = $width_param * $scaling;
4250:
4251: #do we have any specified LaTeX size of the picture?
4252: my $toget='TeXwidth';
4253: if ($cis) {
4254: $toget=lc($toget);
4255: }
4256: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4257: $safeeval,$depth,$cis);
4258: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4259: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4260: $safeeval,$depth,$cis);
4261: #do we have any specified web size of the picture?
4262: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4263: $depth,1);
4264: if ($TeXwidth) {
4265: my $old_width_param=$width_param;
4266: if ($TeXwidth=~/(\d+)\s*\%/) {
4267: $width_param = $1*$env{'form.textwidth'}/100;
4268: } else {
4269: $width_param = $TeXwidth;
4270: }
4271: if ($TeXheight) {
4272: $height_param = $TeXheight;
4273: } elsif ($old_width_param) {
4274: $height_param=$TeXwidth/$old_width_param*$height_param;
4275: }
4276: } elsif ($TeXheight) {
4277: $height_param = $TeXheight;
4278: if ($height_param) {
4279: $width_param = $TeXheight/$height_param*$width_param;
4280: }
4281: } elsif ($width) {
4282: my $old_width_param=$width_param;
4283: $width_param = $width*$scaling;
4284: if ($old_width_param) {
4285: $height_param=$width_param/$old_width_param*$height_param;
4286: }
4287: }
4288: if ($width_param > $env{'form.textwidth'}) {
4289: my $old_width_param=$width_param;
4290: $width_param =0.95*$env{'form.textwidth'};
4291: if ($old_width_param) {
4292: $height_param=$width_param/$old_width_param*$height_param;
4293: }
4294: }
4295:
4296: return ($height_param, $width_param);
4297: }
4298:
4299: sub image_size {
4300: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4301:
4302: #size of image from gif/jpg/jpeg/png
4303: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4304: if (-e $ressrc) {
4305: $src = $ressrc;
4306: }
4307: my $image = Image::Magick->new;
4308: my $current_figure = $image->Read($src);
4309: my $width_param = $image->Get('width');
4310: my $height_param = $image->Get('height');
4311: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4312: undef($image);
4313:
4314: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4315: $scaling, $parstack, $safeeval,
4316: $depth, $cis);
4317:
4318: return ($height_param, $width_param);
4319: }
4320:
4321: sub image_width {
4322: my ($height, $width) = &image_size(@_);
4323: return $width;
4324: }
4325: # Not yet 100% sure this is correct in all circumstances..
4326: # due to my uncertainty about mods to image_size.
4327: #
4328: sub image_height {
4329: my ($height, $width) = &image_size(@_);
4330: return $height;
4331: }
4332:
4333: sub get_eps_image {
4334: my ($src)=@_;
4335: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4336:
4337: # In order to prevent the substitution of the alt text, we need to
4338: # be sure the orig_src file is on system now so:
4339:
4340: if (! -e $orig_src) {
4341: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4342: }
4343: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4344: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg|svg)/i);
4345: $src=~s/\.(bmp|gif|png|jpg|jpeg|svg)$/\.eps/i;
4346: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4347: &Apache::lonxml::debug("Filelocation gives: $src");
4348: if (! -e $src) {
4349: &Apache::lonxml::debug("$src does not exist");
4350: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4351: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4352: #if replication failed try to find ps file
4353: $src=~s/\.eps$/\.ps/;
4354: &Apache::lonxml::debug("Now looking for $src");
4355: #if no ps file try to replicate it.
4356: my $didrepcopy = &Apache::lonnet::repcopy($src);
4357: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4358: if ( (not -e $src) ||
4359: ($didrepcopy ne 'ok')) {
4360: &Apache::lonxml::debug("Failed to find or replicate $src");
4361:
4362: #if replication failed try to produce eps file dynamically
4363: $src=~s/\.ps$/\.eps/;
4364: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4365: my $newsrc=$orig_src;
4366: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4367: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4368: print FILE ("$newsrc\n");
4369: close(FILE);
4370: }
4371: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4372: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4373: if ($sext ne "") { # Put the ext. back in to uniquify.
4374: $src =~ s/\.eps$/$sext.eps/;
4375: }
4376:
4377: }
4378:
4379: }
4380: } else {
4381: # If the postscript file has spaces in its name,
4382: # LaTeX will gratuitiously vomit. Therefore
4383: # queue such files for copy with " " replaced by "_".
4384: # printout.pm will know them by their .ps or .eps extensions.
4385: my $newsrc = $orig_src;
4386: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4387: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4388: print FILE "$src\n";
4389: close FILE;
4390: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4391: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4392: }
4393: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4394: $path =~ s/ /\_/g;
4395: $file =~ s/ /\_/g;
4396: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4397: return ($path.'/',$file);
4398: }
4399:
4400: sub eps_generation {
4401: my ($src,$file,$width_param) = @_;
4402: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4403: if (open(my $tmpfile,">>$filename")) {
4404: print $tmpfile "$src\n";
4405: close($tmpfile);
4406: }
4407: my $newsrc = $src;
4408: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4409: $newsrc=~s{/home/httpd/html/res}{};
4410: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4411: $newsrc=~s{/\./}{/};
4412: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4413: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4414: $newsrc=~s{/home/httpd/lonUsers}{};
4415: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4416: }
4417: if ($newsrc=~m{/userfiles/}) {
4418: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4419: } else {
4420: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4421: }
4422: }
4423:
4424: sub file_path {
4425: my $src=shift;
4426: my ($file,$path);
4427: if ($src =~ m!(.*)/([^/]*)$!) {
4428: $file = $2;
4429: $path = $1.'/';
4430: }
4431: return $file,$path;
4432: }
4433:
4434:
4435: sub recalc {
4436: my $argument = shift;
4437: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4438: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4439: my $value=$1;
4440: my $units=$2;
4441: if ($units eq 'cm') {
4442: $value*=10;
4443: } elsif ($units eq 'in') {
4444: $value*=25.4;
4445: } elsif ($units eq 'pc') {
4446: $value*=(25.4*12/72.27);
4447: } elsif ($units eq 'pt') {
4448: $value*=(25.4/72.27);
4449: }
4450: return $value.' mm';
4451: }
4452:
4453: sub LATEX_length {
4454: my $garbage=shift;
4455: $garbage=~s/^\s+$//;
4456: $garbage=~s/^\s+(\S.*)/$1/;#space before
4457: $garbage=~s/(.*\S)\s+$/$1/;#space after
4458: $garbage=~s/(\s)+/$1/;#only one space
4459: $garbage=~s/(\\begin\{([^\}]+)}|\\end\{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4460: $garbage=~s/(\$\_\{|\$\_|\$\^\{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4461: $garbage=~s/([^\\])\$/$1/g;#$
4462: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^\{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4463: $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;
4464: $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;
4465: $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;
4466: $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;
4467: $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;
4468: $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;
4469: $garbage=~s/(\\hat\{([^}]+)}|\\check\{([^}]+)}|\\dot\{([^}]+)}|\\breve\{([^}]+)}|\\acute\{([^}]+)}|\\ddot\{([^}]+)}|\\grave\{([^}]+)}|\\tilde\{([^}]+)}|\\mathring\{([^}]+)}|\\bar\{([^}]+)}|\\vec\{([^}]+)})/$1/g;
4470: #remove some other LaTeX command
4471: $garbage=~s|\\(\w+)\\|\\|g;
4472: $garbage=~s|\\(\w+)(\s*)|$2|g;
4473: $garbage=~s|\+|11|g;
4474: my $value=length($garbage);
4475: return $value;
4476: }
4477:
4478:
4479: sub align_latex_image {
4480: my ($align, $latex_rendering, $image, $width, $height) = @_;
4481: my $currentstring; # The 1/2 wrapped image.
4482: my $closure; # The closure of the wrappage.
4483:
4484: # if it's none just return it back
4485: if ($latex_rendering eq 'none') {
4486: return ($image,'');
4487: }
4488:
4489: # If there's an alignment specification we need to honor it here.
4490: # For the horizontal alignments, we will also honor the
4491: # value of the latex specfication. The default is parbox,
4492: # and that's used for illegal values too.
4493: #
4494: # Even though we set a default alignment value, the user
4495: # could have given us an illegal value. In that case we
4496: # just use the default alignment of bottom..
4497: $currentstring = '';
4498: if ($align eq "top") {
4499: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4500: $closure = '}';
4501: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4502: my $offset = $height/2;
4503: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4504: $closure = '}';
4505: } elsif ($align eq "left") {
4506: if ($latex_rendering eq "parpic") {
4507: $currentstring .= '\parpic[l]{'.$image;
4508: $closure = '}';
4509: } elsif ($latex_rendering eq "parbox") {
4510: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4511: .$image;
4512: $closure = '\end{minipage}';
4513: } elsif ($latex_rendering eq "wrapfigure"
4514: || $latex_rendering ne 'none') { # wrapfig render
4515: $currentstring .=
4516: '\begin{wrapfigure}{l}{'.$width.'mm}'
4517: .'\scalebox{1.0}{'.$image;
4518: $closure = '}\end{wrapfigure}';
4519: }
4520: } elsif ($align eq "right") {
4521: if ($latex_rendering eq "parpic") {
4522: $currentstring .= '\parpic[r]{'.$image;
4523: $closure = '}';
4524: } elsif ($latex_rendering eq "parbox") {
4525: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4526: .$image;
4527: $closure = '\end{minipage}';
4528: } elsif ($latex_rendering eq "wrapfigure"
4529: || $latex_rendering ne 'none') { # wrapfig render
4530: $currentstring .=
4531: '\begin{wrapfigure}{r}{'.$width.'mm}'
4532: .'\scalebox{1.0}{'.$image;
4533: $closure = '}\end{wrapfigure}';
4534: }
4535: } else { # Bottom is also default.
4536: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4537: $currentstring .= "{$image";
4538: $closure = '}';
4539: }
4540: return ($currentstring, $closure);
4541: }
4542:
4543:
4544: sub is_inside_of {
4545: my ($tagstack, $tag) = @_;
4546: my @stack = @$tagstack;
4547: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4548: if ($stack[$i] eq $tag) {
4549: return 1;
4550: }
4551: }
4552: return 0;
4553: }
4554:
4555:
4556: #
4557: # This sub provides the typical LaTeX prefix matter for tex output:
4558: #
4559: sub latex_header {
4560: my ($mode) = @_;
4561: my $currentstring = '';
4562:
4563: $currentstring .=
4564: "\n% &Apache::lonxml::londefdef \n" .
4565: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4566: if (($env{'form.latex_type'}=~'batchmode') ||
4567: (!$env{'request.role.adv'}) ||
4568: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4569: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4570: '\renewcommand{\deg}{$^{\circ}$}'.
4571: '\usepackage{multirow}'."\n".
4572: '\usepackage{longtable}'."\n".
4573: '\usepackage{textcomp}'."\n".
4574: '\usepackage{makeidx}'."\n".
4575: '\usepackage[dvips]{graphicx}'."\n".
4576: '\usepackage{wrapfig}'."\n".
4577: '\usepackage{picins}'."\n".
4578: '\usepackage[T1]{fontenc}'."\n".
4579: '\usepackage{lmodern}'."\n".
4580: '\usepackage[postscript]{ucs}'."\n".
4581: '\usepackage[utf8x]{inputenc}'."\n".
4582: '\usepackage{pifont}'."\n".
4583: '\usepackage{latexsym}'."\n".
4584: '\usepackage{epsfig}'."\n".
4585: '\usepackage{xtab}'."\n".
4586: '\usepackage{tabularx}'."\n".
4587: '\usepackage{booktabs}'."\n".
4588: '\usepackage{array}'."\n".
4589: '\usepackage{colortbl}'."\n".
4590: '\usepackage{xcolor}'."\n".
4591: '\usepackage{calc}'."\n".
4592: '\usepackage{amsmath}'."\n".
4593: '\usepackage{soul}'."\n".
4594: '\usepackage{amssymb}'."\n".
4595: '\usepackage{amsfonts}'."\n".
4596: '\usepackage{amsthm}'."\n".
4597: '\usepackage{amscd}'."\n";
4598: if($env{'form.pdfFormFields'} eq 'yes') {
4599: $currentstring .= '\usepackage{hyperref}'.
4600: '\usepackage{eforms}'.
4601: '\usepackage{tabularx}';
4602: }
4603:
4604: $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}}'.
4605: '\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}}';
4606: $currentstring .= '\begin{document}';
4607:
4608: return $currentstring;
4609:
4610: }
4611:
4612: sub clean_docs_httpref {
4613: my ($href,$docuri,$cdom,$cnum) = @_;
4614: if ($docuri eq '') {
4615: $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
4616: }
4617: if ($cdom eq '') {
4618: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4619: }
4620: if ($cnum eq '') {
4621: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4622: }
4623: my $cleanhref;
4624: if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/)(.+/)[^/]+$}) {
4625: my $prefix = $1;
4626: my $relpath = $2;
4627: my ($hrefpath,$fname);
4628: if ($href =~ m{^/}) {
4629: if ($href =~ m{^\Q$prefix\E(.+/)([^/]+)$}) {
4630: $hrefpath = $1;
4631: $fname = $2;
4632: } else {
4633: return $cleanhref;
4634: }
4635: } else {
4636: if ($href =~ m{/}) {
4637: (my $path,$fname) = ($href =~ m{^(.*)/([^/]*)$});
4638: $hrefpath = $relpath.$path;
4639: if ($path eq '') {
4640: $hrefpath =~ s{/$}{};
4641: }
4642: } else {
4643: $fname = $href;
4644: $hrefpath = $relpath;
4645: $hrefpath =~ s{/$}{};
4646: }
4647: }
4648: if ($fname ne '') {
4649: my $cleanrelpath;
4650: foreach my $dir (split(/\//,$hrefpath)) {
4651: next if ($dir eq '.');
4652: if ($dir eq '..') {
4653: $cleanrelpath =~ s{([^/]+/)$}{};
4654: } else {
4655: $cleanrelpath .= $dir.'/';
4656: }
4657: }
4658: if ($cleanrelpath ne '') {
4659: $cleanhref = $prefix.$cleanrelpath.$fname;
4660: } else {
4661: $cleanhref = $prefix.$fname;
4662: }
4663: }
4664: }
4665: return $cleanhref;
4666: }
4667:
4668: =pod
4669:
4670: =head1 NAME
4671:
4672: Apache::londefdef.pm
4673:
4674: =head1 SYNOPSIS
4675:
4676: Tags Default Definition Module
4677:
4678: This is part of the LearningOnline Network with CAPA project
4679: described at http://www.lon-capa.org.
4680:
4681:
4682: =head1 NOTABLE SUBROUTINES
4683:
4684: =over
4685:
4686: =item start_hideweboutput()
4687:
4688: =item end_hideweboutput()
4689:
4690: =item image_replication()
4691:
4692: =item resize_image()
4693:
4694: Get correct sizing parameter for an image given
4695: it's initial ht. and wid. This allows sizing of
4696: images that are generated on-the-fly (e.g. gnuplot)
4697: as well as serving as a utility for image_size.
4698:
4699: Parameter:
4700: height_param
4701: width_param - Initial picture dimensions.
4702: scaling - A scale factor.
4703: parstack, - the current stack of tag attributes
4704: from the xml parser
4705: safeeval, - pointer to the safespace
4706: depth, - from what level in the stack to look for attributes
4707: (assumes -1 if unspecified)
4708: cis - look for attrubutes case insensitively
4709: (assumes false)
4710:
4711: Returns:
4712: height, width - new dimensions.
4713:
4714: =item image_size()
4715:
4716: =item image_width()
4717:
4718: =item image_height()
4719:
4720: =item get_eps_image()
4721:
4722: =item eps_generation()
4723:
4724: =item file_path()
4725:
4726: =item recalc()
4727:
4728: Converts a measurement in to mm from any of
4729: the other valid LaTeX units of measure.
4730: If the units of measure are missing from the
4731: parameter, it is assumed to be in and returned
4732: with mm units of measure
4733:
4734: =item LATEX_length()
4735:
4736: =item align_latex_image()
4737:
4738: Wrap image 'stuff' inside of the LaTeX required to implement
4739: alignment:
4740: align_tex_image(align, latex_rendering, image)
4741: Where:
4742: align - The HTML alignment specification.
4743: latex_rendering - rendering hint for latex.
4744: image - The LaTeX needed to insert the image itsef.
4745: width,height - dimensions of the image.
4746: Returns:
4747: The 1/2 wrapped image and the stuff required to close the
4748: wrappage. This allows e.g. randomlabel to insert more stuff
4749: into the closure.
4750:
4751:
4752: =item is_inside_of($tagstack, $tag)
4753: This sub returns true if the current state of Xml processing is inside of the tag.
4754: Parameters:
4755: tagstack - The tagstack from the parser.
4756: tag - The tag (without the <>'s.).
4757: Sample usage:
4758: if (is_inside_of($tagstack "table")) {
4759: I'm in a table....
4760: }
4761:
4762: =item clean_docs_httpref($href,$docuri,$cdom,$cnum)
4763: HTML pages uploaded to a course which contain dependencies either from iframes,
4764: javascript files or objects (FlashPlayerSwf, MediaSrc, XMPSrc, ConfigurationSrc,
4765: and PosterImageSrc) for which dependency is another file uploaded to the same
4766: course.
4767:
4768: Required input:
4769: href - dependency (either a relative URL, or an absolute URL)
4770: Optional inputs:
4771: docuri - URL of HTML page containing the dependency
4772: cdom - Course domain
4773: cnum - CourseID
4774:
4775: Output:
4776: returns an absolute URL constructed from the href provided, and the calling context.
4777: (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
4778: /uploaded/$cdom/$cnum/supplemental/).
4779:
4780: =back
4781:
4782: =cut
4783:
4784:
4785: 1;
4786: __END__
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