1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.456.2.4 2019/05/17 15:41:32 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{'request.course.id'}) && ($env{'form.forceedit'})) {
650: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
651: if ($url =~ /\.html?$/i) {
652: my ($cdom,$cnum);
653: if ($env{'request.course.id'}) {
654: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
655: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
656: if ($env{'request.filename'} =~ m{/userfiles/supplemental/default|\d+/}) {
657: if (&Apache::lonnet::is_course_upload($env{'request.filename'},
658: $cnum,$cdom)) {
659: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
660: ['folderpath','title']);
661: }
662: }
663: }
664: my ($symb,$itemtitle,$displayfile,$caller);
665: if ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/}) {
666: $itemtitle = &mt('Syllabus');
667: $caller = "/public/$cdom/$cnum/syllabus";
668: } else {
669: $caller = $url;
670: ($symb,$itemtitle,$displayfile) =
671: &Apache::lonxml::get_courseupload_hierarchy($url,
672: $env{'form.folderpath'},
673: $env{'form.title'});
674: }
675: if (($symb ne '') || ($env{'httpref.'.$url} ne '') ||
676: ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/})) {
677: $result .= (' ' x 3).
678: &Apache::lonhtmlcommon::dependencies_button()."\n".
679: &Apache::lonhtmlcommon::dependencycheck_js($symb,
680: $itemtitle,$url,$env{'form.folderpath'},$caller)."\n";
681: }
682: }
683: }
684: $result .= '</div>
685: </div>
686: </form>
687: ';
688: return $result;
689: }
690:
691: sub end_body {
692: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
693: my $currentstring = &end_p(); # Close off unclosed <p>
694: if ($target eq 'web' || $target eq 'webgrade') {
695: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
696: } elsif ($target eq 'tex') {
697: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
698: }
699: return $currentstring;
700: }
701:
702: # \begin{center} causes a new paragprah spacing that looks odd inside
703: # of a table cell. Same at the end of a \center but with a slightly
704: # larger space .. hence center_correction and center_end_correction.
705: #
706: sub center_correction { return '\vspace*{-6 mm}'; }
707: sub center_end_correction { return '\vspace*{-7 mm}'; }
708:
709: #-- <center> tag (end tag required)
710: sub start_center {
711: my ($target,$token,$tagstack) = @_;
712: my $currentstring = &end_p(); # Close off any prior para.
713: if ($target eq 'web' || $target eq 'webgrade') {
714: $currentstring .= $token->[4];
715: } elsif ($target eq 'tex') {
716: if (&is_inside_of($tagstack, "table")) {
717: $currentstring .= ¢er_correction();
718: }
719: $currentstring .= '\begin{center}';
720: }
721: return $currentstring;
722: }
723:
724: sub end_center {
725: my ($target,$token,$tagstack) = @_;
726: my $currentstring = '';
727: if ($target eq 'web' || $target eq 'webgrade') {
728: $currentstring = $token->[2];
729: } elsif ($target eq 'tex') {
730: $currentstring = '\end{center}';
731: if (&is_inside_of($tagstack, "table")) {
732: $currentstring .= ¢er_end_correction();
733: }
734: }
735: return $currentstring;
736: }
737:
738: #-- <b> tag (end tag required)
739: # NOTE: In TeX mode disables internal <p>
740: sub start_b {
741: my ($target,$token) = @_;
742: my $currentstring = '';
743: if ($target eq 'web' || $target eq 'webgrade') {
744: $currentstring = $token->[4];
745: } elsif ($target eq 'tex') {
746: &disable_para();
747: $currentstring .= '\textbf{';
748: }
749: return $currentstring;
750: }
751:
752: sub end_b {
753: my ($target,$token) = @_;
754: my $currentstring = '';
755: if ($target eq 'web' || $target eq 'webgrade') {
756: $currentstring = $token->[2];
757: } elsif ($target eq 'tex') {
758: &enable_para();
759: $currentstring = '}';
760: }
761: return $currentstring;
762: }
763:
764: #-- <strong> tag (end tag required)
765: # NOTE: in TeX mode disables internal <p>
766: sub start_strong {
767: my ($target,$token) = @_;
768: my $currentstring = '';
769: if ($target eq 'web' || $target eq 'webgrade') {
770: $currentstring = $token->[4];
771: } elsif ($target eq 'tex') {
772: &disable_para();
773: $currentstring = '\textbf{';
774: }
775: return $currentstring;
776: }
777:
778: sub end_strong {
779: my ($target,$token) = @_;
780: my $currentstring = '';
781: if ($target eq 'web' || $target eq 'webgrade') {
782: $currentstring = $token->[2];
783: } elsif ($target eq 'tex') {
784: &enable_para();
785: $currentstring = '}';
786: }
787: return $currentstring;
788: }
789:
790: #-- <h1> tag (end tag required)
791: sub start_h1 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = &end_p(); # Close off any prior para.
794: if ($target eq 'web' || $target eq 'webgrade') {
795: $currentstring .= $token->[4];
796: } elsif ($target eq 'tex') {
797: my $pre;
798: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
799: if ($align eq 'center') {
800: $pre='\begin{center}';
801: } elsif ($align eq 'left') {
802: $pre='\rlap{';
803: } elsif ($align eq 'right') {
804: $pre=' \hfill \llap{';
805: }
806: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
807: if (not defined $TeXsize) {$TeXsize="large";}
808: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
809: } elsif ($target eq 'meta') {
810: $currentstring.='<subject>';
811: &start_output($target);
812: }
813: return $currentstring;
814: }
815:
816: sub end_h1 {
817: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
818: my $currentstring = '';
819: if ($target eq 'web' || $target eq 'webgrade') {
820: $currentstring .= $token->[2];
821: } elsif ($target eq 'tex') {
822: my $post='\vskip 0 mm ';
823: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
824: if ($align eq 'center') {
825: $post='\end{center}';
826: } elsif ($align eq 'left') {
827: $post='} \hfill'.'\vskip 0 mm ';
828: } elsif ($align eq 'right') {
829: $post='}'.'\vskip 0 mm ';
830: }
831: $currentstring .= '}}'.$post;
832: } elsif ($target eq 'meta') {
833: &end_output($target);
834: $currentstring='</subject>';
835: }
836: return $currentstring;
837: }
838:
839: #-- <h2> tag
840: sub start_h2 {
841: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
842: my $currentstring = &end_p(); # Close off any prior para.
843: if ($target eq 'web' || $target eq 'webgrade') {
844: $currentstring .= $token->[4];
845: } elsif ($target eq 'tex') {
846: my $pre;
847: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
848: if ($align eq 'center') {
849: $pre='\begin{center}';
850: } elsif ($align eq 'left') {
851: $pre='\rlap{';
852: } elsif ($align eq 'right') {
853: $pre=' \hfill \llap{';
854: }
855: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
856: if (not defined $TeXsize) {$TeXsize="large";}
857: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
858: }
859: return $currentstring;
860: }
861:
862: sub end_h2 {
863: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
864: my $currentstring = '';
865: if ($target eq 'web' || $target eq 'webgrade') {
866: $currentstring .= $token->[2];
867: } elsif ($target eq 'tex') {
868: my $post='\vskip 0 mm ';
869: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
870: if ($align eq 'center') {
871: $post='\end{center}';
872: } elsif ($align eq 'left') {
873: $post='} \hfill'.'\vskip 0 mm ';
874: } elsif ($align eq 'right') {
875: $post='}'.'\vskip 0 mm ';
876: }
877: $currentstring .= '}}'.$post;
878: }
879: return $currentstring;
880: }
881:
882: #-- <h3> tag
883: sub start_h3 {
884: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
885: my $currentstring = &end_p(); # Close off any prior para.
886: if ($target eq 'web' || $target eq 'webgrade') {
887: $currentstring .= $token->[4];
888: } elsif ($target eq 'tex') {
889: my $pre;
890: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
891: if ($align eq 'center') {
892: $pre='\begin{center}';
893: } elsif ($align eq 'left') {
894: $pre='\rlap{';
895: } elsif ($align eq 'right') {
896: $pre=' \hfill \llap{';
897: }
898: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
899: if (not defined $TeXsize) {$TeXsize="large";}
900: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
901: }
902: return $currentstring;
903: }
904:
905: sub end_h3 {
906: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
907: my $currentstring = '';
908: if ($target eq 'web' || $target eq 'webgrade') {
909: $currentstring .= $token->[2];
910: } elsif ($target eq 'tex') {
911: my $post='\vskip 0 mm ';
912: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
913: if ($align eq 'center') {
914: $post='\end{center}';
915: } elsif ($align eq 'left') {
916: $post='} \hfill'.'\vskip 0 mm ';
917: } elsif ($align eq 'right') {
918: $post='}'.'\vskip 0 mm ';
919: }
920: $currentstring .= '}}'.$post;
921: }
922: return $currentstring;
923: }
924:
925: #-- <h4> tag
926: sub start_h4 {
927: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
928: my $currentstring = &end_p(); # Close off any prior para.
929: if ($target eq 'web' || $target eq 'webgrade') {
930: $currentstring .= $token->[4];
931: } elsif ($target eq 'tex') {
932: my $pre;
933: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
934: if ($align eq 'center') {
935: $pre='\begin{center}';
936: } elsif ($align eq 'left') {
937: $pre='\rlap{';
938: } elsif ($align eq 'right') {
939: $pre=' \hfill \llap{';
940: }
941: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
942: if (not defined $TeXsize) {$TeXsize="large";}
943: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
944: }
945: return $currentstring;
946: }
947:
948: sub end_h4 {
949: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
950: my $currentstring = '';
951: if ($target eq 'web' || $target eq 'webgrade') {
952: $currentstring .= $token->[2];
953: } elsif ($target eq 'tex') {
954: my $post='\vskip 0 mm ';
955: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
956: if ($align eq 'center') {
957: $post='\end{center}';
958: } elsif ($align eq 'left') {
959: $post='} \hfill'.'\vskip 0 mm ';
960: } elsif ($align eq 'right') {
961: $post='}'.'\vskip 0 mm ';
962: }
963: $currentstring .= '}}'.$post;
964: }
965: return $currentstring;
966: }
967:
968: #-- <h5> tag
969: sub start_h5 {
970: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
971: my $currentstring = &end_p(); # Close off any prior paras.
972: if ($target eq 'web' || $target eq 'webgrade') {
973: $currentstring .= $token->[4];
974: } elsif ($target eq 'tex') {
975: my $pre;
976: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
977: if ($align eq 'center') {
978: $pre='\begin{center}';
979: } elsif ($align eq 'left') {
980: $pre='\rlap{';
981: } elsif ($align eq 'right') {
982: $pre=' \hfill \llap{';
983: }
984: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
985: if (not defined $TeXsize) {$TeXsize="large";}
986: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
987: }
988: return $currentstring;
989: }
990:
991: sub end_h5 {
992: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
993: my $currentstring = '';
994: if ($target eq 'web' || $target eq 'webgrade') {
995: $currentstring .= $token->[2];
996: } elsif ($target eq 'tex') {
997: my $post='\vskip 0 mm ';
998: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
999: if ($align eq 'center') {
1000: $post='\end{center}';
1001: } elsif ($align eq 'left') {
1002: $post='} \hfill'.'\vskip 0 mm ';
1003: } elsif ($align eq 'right') {
1004: $post='}'.'\vskip 0 mm ';
1005: }
1006: $currentstring .= '}}'.$post;
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <h6> tag
1012: sub start_h6 {
1013: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1014: my $currentstring = &end_p(); # Close off any prior paras.
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: my $pre;
1019: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1020: if ($align eq 'center') {
1021: $pre='\begin{center}';
1022: } elsif ($align eq 'left') {
1023: $pre='\rlap{';
1024: } elsif ($align eq 'right') {
1025: $pre=' \hfill \llap{';
1026: }
1027: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
1028: if (not defined $TeXsize) {$TeXsize="large";}
1029: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: sub end_h6 {
1035: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1036: my $currentstring = '';
1037: if ($target eq 'web' || $target eq 'webgrade') {
1038: $currentstring .= $token->[2];
1039: } elsif ($target eq 'tex') {
1040: my $post='\vskip 0 mm ';
1041: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1042: if ($align eq 'center') {
1043: $post='\end{center}';
1044: } elsif ($align eq 'left') {
1045: $post='} \hfill'.'\vskip 0 mm ';
1046: } elsif ($align eq 'right') {
1047: $post='}'.'\vskip 0 mm ';
1048: }
1049: $currentstring .= '}}'.$post;
1050: }
1051: return $currentstring;
1052: }
1053:
1054: #--- <cite> tag (end tag required)
1055: sub start_cite {
1056: my ($target,$token) = @_;
1057: my $currentstring = '';
1058: if ($target eq 'web' || $target eq 'webgrade') {
1059: $currentstring .= $token->[4];
1060: } elsif ($target eq 'tex') {
1061: $currentstring .= '\textit{';
1062: }
1063: return $currentstring;
1064: }
1065:
1066: sub end_cite {
1067: my ($target,$token) = @_;
1068: my $currentstring = '';
1069: if ($target eq 'web' || $target eq 'webgrade') {
1070: $currentstring .= $token->[2];
1071: } elsif ($target eq 'tex') {
1072: $currentstring .= '}';
1073: }
1074: return $currentstring;
1075: }
1076:
1077: #-- <i> tag (end tag required)
1078: sub start_i {
1079: my ($target,$token) = @_;
1080: my $currentstring = '';
1081: if ($target eq 'web' || $target eq 'webgrade') {
1082: $currentstring .= $token->[4];
1083: } elsif ($target eq 'tex') {
1084: $currentstring .= '\textit{';
1085: }
1086: return $currentstring;
1087: }
1088:
1089: sub end_i {
1090: my ($target,$token) = @_;
1091: my $currentstring = '';
1092: if ($target eq 'web' || $target eq 'webgrade') {
1093: $currentstring .= $token->[2];
1094: } elsif ($target eq 'tex') {
1095: $currentstring .= '}';
1096: }
1097: return $currentstring;
1098: }
1099:
1100: #-- <address> tag (end tag required)
1101: sub start_address {
1102: my ($target,$token) = @_;
1103: my $currentstring = '';
1104: if ($target eq 'web' || $target eq 'webgrade') {
1105: $currentstring .= $token->[4];
1106: } elsif ($target eq 'tex') {
1107: $currentstring .= '\textit{';
1108: }
1109: return $currentstring;
1110: }
1111:
1112: sub end_address {
1113: my ($target,$token) = @_;
1114: my $currentstring = '';
1115: if ($target eq 'web' || $target eq 'webgrade') {
1116: $currentstring .= $token->[2];
1117: } elsif ($target eq 'tex') {
1118: $currentstring .= '}';
1119: }
1120: return $currentstring;
1121: }
1122:
1123: #-- <dfn> tag (end tag required)
1124: sub start_dfn {
1125: my ($target,$token) = @_;
1126: my $currentstring = '';
1127: if ($target eq 'web' || $target eq 'webgrade') {
1128: $currentstring .= $token->[4];
1129: } elsif ($target eq 'tex') {
1130: $currentstring .= '\textit{';
1131: }
1132: return $currentstring;
1133: }
1134:
1135: sub end_dfn {
1136: my ($target,$token) = @_;
1137: my $currentstring = '';
1138: if ($target eq 'web' || $target eq 'webgrade') {
1139: $currentstring .= $token->[2];
1140: } elsif ($target eq 'tex') {
1141: $currentstring .= '}';
1142: }
1143: return $currentstring;
1144: }
1145:
1146: #-- <tt> tag (end tag required)
1147: sub start_tt {
1148: my ($target,$token) = @_;
1149: my $currentstring = '';
1150: if ($target eq 'web' || $target eq 'webgrade') {
1151: $currentstring .= $token->[4];
1152: } elsif ($target eq 'tex') {
1153: $currentstring .= '\texttt{';
1154: }
1155: return $currentstring;
1156: }
1157:
1158: sub end_tt {
1159: my ($target,$token) = @_;
1160: my $currentstring = '';
1161: if ($target eq 'web' || $target eq 'webgrade') {
1162: $currentstring .= $token->[2];
1163: } elsif ($target eq 'tex') {
1164: $currentstring .= '}';
1165: }
1166: return $currentstring;
1167: }
1168:
1169: #-- <kbd> tag (end tag required)
1170: sub start_kbd {
1171: my ($target,$token) = @_;
1172: my $currentstring = '';
1173: if ($target eq 'web' || $target eq 'webgrade') {
1174: $currentstring .= $token->[4];
1175: } elsif ($target eq 'tex') {
1176: $currentstring .= '\texttt{';
1177: }
1178: return $currentstring;
1179: }
1180:
1181: sub end_kbd {
1182: my ($target,$token) = @_;
1183: my $currentstring = '';
1184: if ($target eq 'web' || $target eq 'webgrade') {
1185: $currentstring .= $token->[2];
1186: } elsif ($target eq 'tex') {
1187: $currentstring .= '}';
1188: }
1189: return $currentstring;
1190: }
1191:
1192: #-- <code> tag (end tag required)
1193: sub start_code {
1194: my ($target,$token) = @_;
1195: my $currentstring = '';
1196: if ($target eq 'web' || $target eq 'webgrade') {
1197: $currentstring .= $token->[4];
1198: } elsif ($target eq 'tex') {
1199: $currentstring .= '\texttt{';
1200: }
1201: return $currentstring;
1202: }
1203:
1204: sub end_code {
1205: my ($target,$token) = @_;
1206: my $currentstring = '';
1207: if ($target eq 'web' || $target eq 'webgrade') {
1208: $currentstring .= $token->[2];
1209: } elsif ($target eq 'tex') {
1210: $currentstring .= '}';
1211: }
1212: return $currentstring;
1213: }
1214:
1215: #-- <em> tag (end tag required)
1216: sub start_em {
1217: my ($target,$token) = @_;
1218: my $currentstring = '';
1219: if ($target eq 'web' || $target eq 'webgrade') {
1220: $currentstring .= $token->[4];
1221: } elsif ($target eq 'tex') {
1222: $currentstring .= '\emph{';
1223: }
1224: return $currentstring;
1225: }
1226:
1227: sub end_em {
1228: my ($target,$token) = @_;
1229: my $currentstring = '';
1230: if ($target eq 'web' || $target eq 'webgrade') {
1231: $currentstring .= $token->[2];
1232: } elsif ($target eq 'tex') {
1233: $currentstring .= '}';
1234: }
1235: return $currentstring;
1236: }
1237:
1238: #-- <q> tag (end tag required)
1239: sub start_q {
1240: my ($target,$token) = @_;
1241: my $currentstring = '';
1242: if ($target eq 'web' || $target eq 'webgrade') {
1243: $currentstring .= $token->[4];
1244: } elsif ($target eq 'tex') {
1245: $currentstring .= '\emph{';
1246: }
1247: return $currentstring;
1248: }
1249:
1250: sub end_q {
1251: my ($target,$token) = @_;
1252: my $currentstring = '';
1253: if ($target eq 'web' || $target eq 'webgrade') {
1254: $currentstring .= $token->[2];
1255: } elsif ($target eq 'tex') {
1256: $currentstring .= '}';
1257: }
1258: return $currentstring;
1259: }
1260:
1261: # <p> is a bit strange since it does not require a closing </p>
1262: # However in latex, we must often output closing stuff to end
1263: # environments and {}'s etc. Therefore we do all the work
1264: # of figuring out the ending strings in the start tag processing,
1265: # and provide a mechanism to output the stop text external
1266: # to tag processing.
1267: #
1268: {
1269:
1270: my $closing_string = ''; # String required to close <p>
1271:
1272: # Some tags are <p> fragile meaning that <p> inside of them
1273: # does not work within TeX mode. This is managed via the
1274: # counter below:
1275: #
1276:
1277: my $para_disabled = 0;
1278:
1279: sub disable_para {
1280: $para_disabled++;
1281: }
1282: sub enable_para {
1283: $para_disabled--;
1284: }
1285:
1286:
1287: #-- <p> tag (end tag optional)
1288: #optional attribute - align="center|left|right"
1289: sub start_p {
1290: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1291: my $currentstring = '';
1292: if ($target eq 'web' || $target eq 'webgrade') {
1293: $currentstring .= &end_p(); # close off prior para if in progress.
1294: $currentstring .= $token->[4];
1295: if (! ($currentstring =~ /\//)) {
1296: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1297: }
1298: } elsif ($target eq 'tex' && !$para_disabled) {
1299:
1300: $currentstring .= &end_p(); # close off prior para if in progress.
1301: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1302: if ($align eq 'center') {
1303: $currentstring .='\begin{center}\par ';
1304: $closing_string = '\end{center}';
1305: if (&is_inside_of($tagstack, "table")) {
1306: $currentstring = ¢er_correction().$currentstring;
1307: }
1308: } elsif ($align eq 'right') {
1309: $currentstring.="\n".'{\flushright ';
1310: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1311: $closing_string= "}\n";
1312: } elsif ($align eq 'left') {
1313: $currentstring.= "\n".'{\flushleft ';
1314: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1315: $closing_string = "}\n";
1316: } else {
1317: $currentstring.='\par ';
1318: if (&is_inside_of($tagstack, 'table')) {
1319: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1320: } else {
1321: $closing_string = '\strut\\\\\strut ';
1322: }
1323: }
1324:
1325: }
1326: return $currentstring;
1327: }
1328: #
1329: # End paragraph processing just requires that we output the
1330: # closing string that was saved and blank it.
1331: sub end_p {
1332: # Note only 'tex' mode uses disable_para and enable_para
1333: # so we don't need to know the target in the check below:
1334:
1335: if (!$para_disabled) {
1336: my $current_string = $closing_string;
1337: $closing_string = ''; # Not in a para anymore.
1338: return $current_string;
1339: } else {
1340: return '';
1341: }
1342:
1343: }
1344: }
1345: #-- <br> tag (end tag forbidden)
1346: sub start_br {
1347: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1348: my $currentstring = '';
1349: if ($target eq 'web' || $target eq 'webgrade') {
1350: $currentstring .= $token->[4];
1351: } elsif ($target eq 'tex') {
1352: my @tempo=@$tagstack;
1353: my $signal=0;
1354: # Not going to factor this to is_inside_of since that would require
1355: # multiple stack traversals.
1356: #
1357: for (my $i=$#tempo;$i>=0;$i--) {
1358: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1359: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1360: $signal=1;
1361: }
1362: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1363: $signal = 1;
1364: }
1365: }
1366: if ($signal != 1) {
1367: $currentstring .= '\strut \\\\ \strut ';
1368: }
1369:
1370: }
1371: return $currentstring;
1372: }
1373:
1374: sub end_br {
1375: my ($target,$token) = @_;
1376: my $currentstring = '';
1377: if ($target eq 'web' || $target eq 'webgrade') {
1378: $currentstring .= $token->[2];
1379: }
1380: return $currentstring;
1381: }
1382:
1383: #-- <big> tag (end tag required)
1384: sub start_big {
1385: my ($target,$token) = @_;
1386: my $currentstring = '';
1387: if ($target eq 'web' || $target eq 'webgrade') {
1388: $currentstring .= $token->[4];
1389: } elsif ($target eq 'tex') {
1390: $currentstring .= '{\large ';
1391: }
1392: return $currentstring;
1393: }
1394:
1395: sub end_big {
1396: my ($target,$token) = @_;
1397: my $currentstring = '';
1398: if ($target eq 'web' || $target eq 'webgrade') {
1399: $currentstring .= $token->[2];
1400: } elsif ($target eq 'tex') {
1401: $currentstring .= '}';
1402: }
1403: return $currentstring;
1404: }
1405:
1406: #-- <small> tag (end tag required)
1407: sub start_small {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[4];
1412: } elsif ($target eq 'tex') {
1413: $currentstring .= '{\footnotesize ';
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_small {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[2];
1423: } elsif ($target eq 'tex') {
1424: $currentstring .= '}';
1425: }
1426: return $currentstring;
1427: }
1428:
1429: #-- <basefont> tag (end tag forbidden)
1430: sub start_basefont {
1431: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1432: my $currentstring = '';
1433: if ($target eq 'web' || $target eq 'webgrade') {
1434: $currentstring = $token->[4];
1435: } elsif ($target eq 'tex') {
1436: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1437: if (defined $basesize) {
1438: $currentstring = '{\\'.$basesize.' ';
1439: }
1440: }
1441: return $currentstring;
1442: }
1443:
1444: sub end_basefont {
1445: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1446: my $currentstring = '';
1447: if ($target eq 'web' || $target eq 'webgrade') {
1448: $currentstring = $token->[4];
1449: } elsif ($target eq 'tex') {
1450: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1451: if (defined $basesize) {
1452: $currentstring = '}';
1453: }
1454: }
1455: return $currentstring;
1456: }
1457:
1458: #-- <font> tag (end tag required)
1459: sub start_font {
1460: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1461: my $currentstring = '';
1462: if ($target eq 'web' || $target eq 'webgrade') {
1463: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1464: $currentstring = $token->[4];
1465: } elsif ($target eq 'tex') {
1466: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1467: if (defined $fontsize) {
1468: $currentstring = '{\\'.$fontsize.' ';
1469: }
1470: }
1471: return $currentstring;
1472: }
1473:
1474: sub end_font {
1475: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1476: my $currentstring = '';
1477: if ($target eq 'web' || $target eq 'webgrade') {
1478: $currentstring = $token->[2];
1479: } elsif ($target eq 'tex') {
1480: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1481: if (defined $fontsize) {
1482: $currentstring = '}';
1483: }
1484: }
1485: return $currentstring;
1486: }
1487:
1488: #-- <strike> tag (end tag required)
1489: sub start_strike {
1490: my ($target,$token) = @_;
1491: my $currentstring = '';
1492: if ($target eq 'web' || $target eq 'webgrade') {
1493: $currentstring .= $token->[4];
1494: } elsif ($target eq 'tex') {
1495: &Apache::lonxml::startredirection();
1496: }
1497: return $currentstring;
1498: }
1499:
1500: sub end_strike {
1501: my ($target,$token) = @_;
1502: my $currentstring = '';
1503: if ($target eq 'web' || $target eq 'webgrade') {
1504: $currentstring .= $token->[2];
1505: } elsif ($target eq 'tex') {
1506: $currentstring=&Apache::lonxml::endredirection();
1507: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1508: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1509: $currentstring=~s/(\S)\s*$/$1\}/;
1510: }
1511: return $currentstring;
1512: }
1513:
1514: #-- <s> tag (end tag required)
1515: sub start_s {
1516: my ($target,$token) = @_;
1517: my $currentstring = '';
1518: if ($target eq 'web' || $target eq 'webgrade') {
1519: $currentstring .= $token->[4];
1520: } elsif ($target eq 'tex') {
1521: &Apache::lonxml::startredirection();
1522: }
1523: return $currentstring;
1524: }
1525:
1526: sub end_s {
1527: my ($target,$token) = @_;
1528: my $currentstring = '';
1529: if ($target eq 'web' || $target eq 'webgrade') {
1530: $currentstring .= $token->[2];
1531: } elsif ($target eq 'tex') {
1532: $currentstring=&Apache::lonxml::endredirection();
1533: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1534: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1535: $currentstring=~s/(\S)\s*$/$1\}/;
1536: }
1537: return $currentstring;
1538: }
1539:
1540: #-- <sub> tag (end tag required)
1541: sub start_sub {
1542: my ($target,$token) = @_;
1543: my $currentstring = '';
1544: if ($target eq 'web' || $target eq 'webgrade') {
1545: $currentstring .= $token->[4];
1546: } elsif ($target eq 'tex') {
1547: $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
1548: }
1549: return $currentstring;
1550: }
1551:
1552: sub end_sub {
1553: my ($target,$token) = @_;
1554: my $currentstring = '';
1555: if ($target eq 'web' || $target eq 'webgrade') {
1556: $currentstring .= $token->[2];
1557: } elsif ($target eq 'tex') {
1558: $currentstring .= '}}';
1559: }
1560: return $currentstring;
1561: }
1562:
1563: #-- <sup> tag (end tag required)
1564: sub start_sup {
1565: my ($target,$token) = @_;
1566: my $currentstring = '';
1567: if ($target eq 'web' || $target eq 'webgrade') {
1568: $currentstring .= $token->[4];
1569: } elsif ($target eq 'tex') {
1570: $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
1571: }
1572: return $currentstring;
1573: }
1574:
1575: sub end_sup {
1576: my ($target,$token) = @_;
1577: my $currentstring = '';
1578: if ($target eq 'web' || $target eq 'webgrade') {
1579: $currentstring .= $token->[2];
1580: } elsif ($target eq 'tex') {
1581: $currentstring .= '}}';
1582: }
1583: return $currentstring;
1584: }
1585:
1586: #-- <hr> tag (end tag forbidden)
1587: sub start_hr {
1588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1589: my $currentstring = &end_p(); # End enclosing para.
1590: if ($target eq 'web' || $target eq 'webgrade') {
1591: $currentstring .= $token->[4];
1592: } elsif ($target eq 'tex') {
1593:
1594: # <hr /> can't be inside of <sup><sub> thank you LaTeX.
1595: #
1596: my $restart_sub = 0;
1597: my $restart_sup = 0;
1598:
1599: # Since <sub> and <sup> are simple tags it's ok to turn off/on
1600: # using the start_ stop_ functions.. those tags only care about
1601: # $target.
1602:
1603: if (&is_inside_of($tagstack, "sub")) {
1604: $restart_sub = 1;
1605: $currentstring .= &end_sub($target, $token, $tagstack,
1606: $parstack, $parser, $safeeval);
1607: }
1608: if (&is_inside_of($tagstack, "sup")) {
1609: $restart_sup = 1;
1610: $currentstring .= &end_sup($target, $token, $tagstack,
1611: $parstack, $parser, $safeeval);
1612: }
1613:
1614: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1615: if (defined $LaTeXwidth) {
1616: if ($LaTeXwidth=~/^%/) {
1617: substr($LaTeXwidth,0,1)='';
1618: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1619: }
1620: } else {
1621: $LaTeXwidth ='0.9\textwidth';
1622: }
1623: my ($pre,$post);
1624: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1625: if (($align eq 'center') || (not defined $align)) {
1626: $pre=''; $post='';
1627: } elsif ($align eq 'left') {
1628: $pre='\rlap{'; $post='} \hfill';
1629: } elsif ($align eq 'right') {
1630: $pre=' \hfill \llap{'; $post='}';
1631: }
1632: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1633: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1634: # Turn stuff back on that we can't be inside of.
1635:
1636: if ($restart_sub) {
1637: $currentstring .= &start_sub($target, $token, $tagstack,
1638: $parstack, $parser, $safeeval);
1639: }
1640: if ($restart_sup) {
1641: $currentstring .= &start_sup($target, $token, $tagstack,
1642: $parstack, $parser, $safeeval);
1643: }
1644: }
1645: return $currentstring;
1646: }
1647:
1648: sub end_hr {
1649: my ($target,$token) = @_;
1650: my $currentstring = '';
1651: if ($target eq 'web' || $target eq 'webgrade') {
1652: $currentstring .= $token->[2];
1653: }
1654: return $currentstring;
1655: }
1656:
1657: #-- <div> tag (end tag required)
1658: {
1659:
1660: # Since div can be nested, the stack below is used
1661: # in 'tex' mode to store the ending strings
1662: # for the div stack.
1663:
1664: my @div_end_stack;
1665:
1666: sub start_div {
1667: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1668: my $currentstring = &end_p(); # Close enclosing para.
1669: if ($target eq 'web' || $target eq 'webgrade') {
1670: $currentstring .= $token->[4];
1671: }
1672: if ($target eq 'tex') {
1673: # 4 possible alignments: left, right, center, and -missing-.
1674: # If inside a table row, we must let the table logic
1675: # do the alignment, however.
1676: #
1677:
1678: my $endstring = '';
1679:
1680: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1681: $safeeval, undef, 1));
1682: if ($align eq 'center') {
1683: $currentstring .= '\begin{center}';
1684: $endstring = '\end{center}';
1685: if (&is_inside_of($tagstack, "table")) {
1686: $currentstring = ¢er_correction().$currentstring;
1687: $endstring .= ¢er_end_correction();
1688: }
1689: }
1690: elsif ($align eq 'right') {
1691: $currentstring .= '\begin{flushright}';
1692: $endstring .= '\end{flushright}';
1693: } elsif ($align eq 'left') {
1694: $currentstring .= '\begin{flushleft}';
1695: $endstring = '\end{flushleft}';
1696: } else {
1697:
1698: }
1699: $currentstring .= "\n"; # For human readability.
1700: $endstring = "\n$endstring\n"; # For human readability
1701: push(@div_end_stack, $endstring);
1702: }
1703: return $currentstring;
1704: }
1705:
1706: sub end_div {
1707: my ($target,$token) = @_;
1708: my $currentstring = '';
1709: if ($target eq 'web' || $target eq 'webgrade') {
1710: $currentstring .= $token->[2];
1711: }
1712: if ($target eq 'tex') {
1713: my $endstring = pop @div_end_stack;
1714: $currentstring .= $endstring;
1715: }
1716: return $currentstring;
1717: }
1718: }
1719:
1720: #-- <a> tag (end tag required)
1721: sub start_a {
1722: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1723: my $currentstring = '';
1724: if ($target eq 'web' || $target eq 'webgrade') {
1725: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1726: undef,1);
1727: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1728: if ($href =~ /\S/) {
1729: if ($href !~ m{^https?://}) {
1730: my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
1731: my $linkurl;
1732: if ($href =~ m{^/uploaded/}) {
1733: $linkurl = $href;
1734: } elsif ($href =~ m{^[^/]}) {
1735: my $path = $url;
1736: $path =~ s{[^/]*$}{};
1737: $linkurl = $path.$href;
1738: }
1739: if ($linkurl =~ m{^/uploaded/}) {
1740: if (!&Apache::lonnet::allowed('bre',$linkurl)) {
1741: if (&Apache::lonnet::is_on_map($url)) {
1742: &Apache::lonxml::extlink($linkurl);
1743: } elsif ($env{'request.course.id'}) {
1744: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1745: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1746: if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/(docs|supplemental)/)}) {
1747: my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
1748: if ($cleanhref) {
1749: &Apache::lonxml::extlink($cleanhref);
1750: }
1751: }
1752: }
1753: }
1754: }
1755: }
1756: }
1757: }
1758: return $currentstring;
1759: }
1760:
1761: sub end_a {
1762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1763: my $currentstring = '';
1764: if ($target eq 'web' || $target eq 'webgrade') {
1765: $currentstring .= $token->[2];
1766: }
1767: if ($target eq 'tex') {
1768: my $href =
1769: &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1770: my $name =
1771: &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1772: my $uriprint =
1773: &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
1774: my $anchorprint =
1775: &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
1776: if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
1777: $href =~ s/([^\\])%/$1\\\%/g;
1778: # Substitute special symbols... and allow line breaks at each /
1779: #
1780: $href = &Apache::lonxml::latex_special_symbols($href);
1781: $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
1782: $currentstring .= ' ({\tt URI:'.$href.'})';
1783: } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
1784: $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
1785: } else {
1786: $currentstring.='';
1787: }
1788: }
1789: return $currentstring;
1790: }
1791:
1792: #-- <li> tag (end tag optional)
1793: sub start_li {
1794: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1795: my $currentstring = '';
1796: if ($target eq 'web' || $target eq 'webgrade') {
1797: $currentstring = $token->[4];
1798: } elsif ($target eq 'tex') {
1799: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1800: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1801: #FIXME need to support types i and I
1802: if ($type=~/disc/) {
1803: $currentstring .= ' \item[$\bullet$] ';
1804: } elsif ($type=~/circle/) {
1805: $currentstring .= ' \item[$\circ$] ';
1806: } elsif ($type=~/square/) {
1807: $currentstring .= ' \item[$\diamond$] ';
1808: } elsif ($type eq '1') {
1809: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1810: } elsif ($type eq 'A') {
1811: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1812: } elsif ($type eq 'a') {
1813: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1814: } elsif ($value ne '') {
1815: $currentstring .= ' \item['.$value.'] ';
1816: } else {
1817: $currentstring .= ' \item ';
1818: }
1819: $Apache::londefdef::list_index++;
1820: }
1821: return $currentstring;
1822: }
1823:
1824: sub end_li {
1825: my ($target,$token) = @_;
1826: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1827: if ($target eq 'web' || $target eq 'webgrade') {
1828: $currentstring .= $token->[2];
1829: }
1830: return $currentstring;
1831: }
1832:
1833: #-- <u> tag (end tag required)
1834: sub start_u {
1835: my ($target,$token) = @_;
1836: my $currentstring = '';
1837: if ($target eq 'web' || $target eq 'webgrade') {
1838: $currentstring .= $token->[4];
1839: } elsif ($target eq 'tex') {
1840: &Apache::lonxml::startredirection();
1841: }
1842: return $currentstring;
1843: }
1844:
1845: sub end_u {
1846: my ($target,$token) = @_;
1847: my $currentstring = '';
1848: if ($target eq 'web' || $target eq 'webgrade') {
1849: $currentstring .= $token->[2];
1850: } elsif ($target eq 'tex') {
1851: $currentstring=&Apache::lonxml::endredirection();
1852: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1853: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1854: $currentstring=~s/(\S)\s*$/$1\}/;
1855: }
1856: return $currentstring;
1857: }
1858:
1859: #-- <ul> tag (end tag required)
1860: sub start_ul {
1861: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1862: my $currentstring = &end_p(); # Close off enclosing list.
1863: if ($target eq 'web' || $target eq 'webgrade') {
1864: $currentstring .= $token->[4];
1865: } elsif ($target eq 'tex') {
1866: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1867: $Apache::londefdef::list_index=0;
1868: if ($TeXtype eq 'disc') {
1869: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1870: '\renewcommand{\labelitemii}{$\bullet$}'.
1871: '\renewcommand{\labelitemiii}{$\bullet$}'.
1872: '\renewcommand{\labelitemiv}{$\bullet$}';
1873: } elsif ($TeXtype eq 'circle') {
1874: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1875: '\renewcommand{\labelitemii}{$\circ$}'.
1876: '\renewcommand{\labelitemiii}{$\circ$}'.
1877: '\renewcommand{\labelitemiv}{$\circ$}';
1878: } elsif ($TeXtype eq 'square') {
1879: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1880: '\renewcommand{\labelitemii}{$\diamond$}'.
1881: '\renewcommand{\labelitemiii}{$\diamond$}'.
1882: '\renewcommand{\labelitemiv}{$\diamond$}';
1883: }
1884: $currentstring .= '\strut \begin{itemize}';
1885: }
1886: return $currentstring;
1887: }
1888:
1889: sub end_ul {
1890: my ($target,$token) = @_;
1891: my $currentstring = '';
1892: if ($target eq 'web' || $target eq 'webgrade') {
1893: $currentstring = $token->[2];
1894: } elsif ($target eq 'tex') {
1895: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1896: '\renewcommand{\labelitemii}{$\bullet$}'.
1897: '\renewcommand{\labelitemiii}{$\bullet$}'.
1898: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1899: }
1900: return $currentstring;
1901: }
1902:
1903: #-- <menu> tag (end tag required)
1904: sub start_menu {
1905: my ($target,$token) = @_;
1906: my $currentstring = '';
1907: if ($target eq 'web' || $target eq 'webgrade') {
1908: $currentstring = $token->[4];
1909: } elsif ($target eq 'tex') {
1910: $currentstring = " \\begin{itemize} ";
1911: }
1912: return $currentstring;
1913: }
1914:
1915: sub end_menu {
1916: my ($target,$token) = @_;
1917: my $currentstring = '';
1918: if ($target eq 'web' || $target eq 'webgrade') {
1919: $currentstring = $token->[2];
1920: } elsif ($target eq 'tex') {
1921: $currentstring = " \\end{itemize}";
1922: }
1923: return $currentstring;
1924: }
1925:
1926: #-- <dir> tag (end tag required)
1927: sub start_dir {
1928: my ($target,$token) = @_;
1929: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1930: if ($target eq 'web' || $target eq 'webgrade') {
1931: $currentstring .= $token->[4];
1932: } elsif ($target eq 'tex') {
1933: $currentstring .= " \\begin{itemize} ";
1934: }
1935: return $currentstring;
1936: }
1937:
1938: sub end_dir {
1939: my ($target,$token) = @_;
1940: my $currentstring = '';
1941: if ($target eq 'web' || $target eq 'webgrade') {
1942: $currentstring = $token->[2];
1943: } elsif ($target eq 'tex') {
1944: $currentstring = " \\end{itemize}";
1945: }
1946: return $currentstring;
1947: }
1948:
1949: #-- <ol> tag (end tag required)
1950: sub start_ol {
1951: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1952: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1953: if ($target eq 'web' || $target eq 'webgrade') {
1954: $currentstring .= $token->[4];
1955: } elsif ($target eq 'tex') {
1956: $Apache::londefdef::list_index=0;
1957: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1958: if ($type eq '1') {
1959: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1960: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1961: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1962: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1963: } elsif ($type eq 'A') {
1964: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1965: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1966: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1967: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1968: } elsif ($type eq 'a') {
1969: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1970: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1971: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1972: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1973: } elsif ($type eq 'i') {
1974: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1975: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1976: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1977: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1978: } elsif ($type eq 'I') {
1979: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1980: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1981: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1982: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1983: }
1984: $currentstring .= '\strut \begin{enumerate}';
1985: }
1986: return $currentstring;
1987: }
1988:
1989: sub end_ol {
1990: my ($target,$token) = @_;
1991: my $currentstring = '';
1992: if ($target eq 'web' || $target eq 'webgrade') {
1993: $currentstring = $token->[2];
1994: } elsif ($target eq 'tex') {
1995: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1996: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1997: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1998: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1999: }
2000: return $currentstring;
2001: }
2002:
2003: #-- <dl> tag (end tag required)
2004: sub start_dl {
2005: my ($target,$token) = @_;
2006: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
2007: if ($target eq 'web' || $target eq 'webgrade') {
2008: $currentstring .= $token->[4];
2009: } elsif ($target eq 'tex') {
2010: $currentstring .= '\begin{description}';
2011: $Apache::londefdef::DL++;
2012: push(@Apache::londefdef::description,[]);
2013: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
2014: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
2015: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
2016: }
2017: return $currentstring;
2018: }
2019:
2020: sub end_dl {
2021: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2022: my $currentstring = '';
2023: if ($target eq 'web' || $target eq 'webgrade') {
2024: $currentstring = $token->[2];
2025: } elsif ($target eq 'tex') {
2026: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2027: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2028: foreach my $element (@{$Apache::londefdef::description[-1]}) {
2029: $currentstring.=' '.$element.' ';
2030: }
2031: pop(@Apache::londefdef::description);
2032: $currentstring.='\end{description}';
2033: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
2034: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
2035: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
2036: $Apache::londefdef::DL--;
2037: }
2038: return $currentstring;
2039: }
2040:
2041: #-- <dt> tag (end tag optional)
2042: sub start_dt {
2043: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2044: my $currentstring='';
2045: if ($target eq 'web' || $target eq 'webgrade') {
2046: $currentstring = $token->[4];
2047: } elsif ($target eq 'tex') {
2048: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2049: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
2050: &Apache::lonxml::startredirection();
2051: $Apache::londefdef::DT[-1]++;
2052: $Apache::londefdef::seenDT[-1]=1;
2053: }
2054: return $currentstring;
2055: }
2056:
2057: sub end_dt {
2058: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2059: my $currentstring = '';
2060: if ($target eq 'web' || $target eq 'webgrade') {
2061: $currentstring = $token->[2];
2062: } elsif ($target eq 'tex') {
2063: if ($Apache::londefdef::DT[-1]) {
2064: my $data=&item_cleanup();
2065: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
2066: $Apache::londefdef::DT[-1]--;
2067: }
2068: }
2069: return $currentstring;
2070: }
2071:
2072: sub item_cleanup {
2073: my $item=&Apache::lonxml::endredirection();
2074: $item=~s/\\begin\{center}//g;
2075: $item=~s/\\end\{center}//g;
2076: return $item;
2077: }
2078:
2079: #-- <dd> tag (end tag optional)
2080: sub start_dd {
2081: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2082: my $currentstring = '';
2083: if ($target eq 'web' || $target eq 'webgrade') {
2084: $currentstring = $token->[4];
2085: } elsif ($target eq 'tex') {
2086: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
2087: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
2088: if (!$Apache::londefdef::seenDT[-1]) {
2089: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
2090: }
2091: push(@{$Apache::londefdef::description[-1]},'');
2092: $Apache::londefdef::description[-1]->[-1].=' \strut ';
2093: $Apache::londefdef::DD[-1]++;
2094: &Apache::lonxml::startredirection();
2095: }
2096: return $currentstring;
2097: }
2098:
2099: sub end_dd {
2100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2101: my $currentstring = '';
2102: if ($target eq 'web' || $target eq 'webgrade') {
2103: $currentstring = $token->[2];
2104: } elsif ($target eq 'tex') {
2105: $Apache::londefdef::description[-1]->[-1].=
2106: &Apache::lonxml::endredirection().' \vskip 0mm ';
2107: $Apache::londefdef::DD[-1]--;
2108: }
2109: return $currentstring;
2110: }
2111:
2112: #-- <table> tag (end tag required)
2113: # <table> also ends any prior <p> that is not closed.
2114: # but, unless I allow <p>'s to nest, that's the
2115: # only way I could think of to allow <p> in
2116: # <tr> <th> bodies
2117: #
2118: #list of supported attributes: border,width,TeXwidth,TeXtheme
2119: # align
2120: sub start_table {
2121: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2122: my $textwidth = '';
2123: my $currentstring = &end_p();
2124: if ($target eq 'web' || $target eq 'webgrade') {
2125: $currentstring .= $token->[4];
2126: } elsif ($target eq 'tex') {
2127: &disable_para(); # Can't have paras in a table.
2128:
2129: # Get the parameters that we can do something about:
2130:
2131: my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
2132: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
2133: my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
2134: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
2135: my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
2136:
2137: # The only thing that needs any figuring out is the width.. and then only if it is
2138: # a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
2139: #
2140:
2141: my $table = new Apache::lontable();
2142: if ((defined $border) && ($border > 0)) {
2143: # &Apache::lonnet::logthis("Turning on table borders: $border");
2144: $table->table_border(1);
2145: if (!defined $cell_border) {
2146: $table->cell_border(1); # Default for rules is all if rules not defined.
2147: }
2148: }
2149:
2150: if ((defined $cell_border)) {
2151: if ($cell_border eq 'all') {
2152: $table->cell_border(1);
2153: } elsif ($cell_border eq 'rows') {
2154: $table->cell_border(2);
2155: } elsif ($cell_border eq 'cols') {
2156: $table->cell_border(3);
2157: } elsif($cell_border eq 'groups') {
2158: $table->cell_border(4);
2159: } else {
2160: $table->cell_border(0);
2161: }
2162: }
2163: if (defined $theme) {
2164: $table->theme($theme);
2165: }
2166: if (defined $align) {
2167: $table->alignment($align);
2168: }
2169:
2170: # Missing width is most of page width
2171:
2172: if (!(defined $width)) {
2173: $width = '70%';
2174: }
2175:
2176: # If a percentage, need to calculate what this means in terms of
2177: # page width:
2178:
2179: if ($width =~ /%$/) {
2180: my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
2181: $width =~ s/%//;
2182: $width = $width * $textwidth / 100.0;
2183: $width .= " mm";
2184: $table->width($width);
2185: }
2186:
2187: push(@Apache::londefdef::table, $table);
2188: $currentstring.=' \keephidden{NEW TABLE ENTRY}';
2189:
2190: }
2191: return $currentstring;
2192: }
2193:
2194: sub end_table {
2195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2196: my $currentstring = '';
2197: if ($target eq 'web' || $target eq 'webgrade') {
2198: $currentstring = $token->[2];
2199: } elsif ($target eq 'tex') {
2200:
2201:
2202: my $table = pop(@Apache::londefdef::table);
2203: my $t = $table->generate();
2204: # &Apache::lonnet::logthis("Generating string");
2205: $currentstring = $t->generate_string();
2206: # &Apache::lonnet::logthis("Generated: $currentstring");
2207: &enable_para();
2208:
2209: }
2210: return $currentstring;
2211: }
2212:
2213: #-- <tr> tag (end tag optional)
2214: sub start_tr {
2215: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2216: my $currentstring = '';
2217: if ($target eq 'web' || $target eq 'webgrade') {
2218: $currentstring = $token->[4];
2219: } elsif ($target eq 'tex') {
2220:
2221: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
2222: $Apache::londefdef::table[-1]->start_row();
2223:
2224: if ($align ne '') {
2225: $Apache::londefdef::table[-1]->configure_row({default_halign => $align});
2226: }
2227:
2228: #---------------------------------------------------------------
2229: # Old table code.
2230: #---------------------------------------------------------------
2231:
2232: if (0) {
2233: $Apache::londefdef::table[-1]{'row_number'}++;
2234: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2235: if ($alignchar ne '') {
2236: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2237: } else {
2238: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2239: }
2240: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2241: #
2242: # Need to save the number of table columns to preserve the max # columns.
2243: #
2244: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2245: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2246: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2247: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2248: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2249: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2250: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2251: }
2252: }
2253: return $currentstring;
2254: }
2255:
2256: sub end_tr {
2257: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2258: my $currentstring = &end_p(); # Close any pending <p> in the row.
2259: if ($target eq 'web' || $target eq 'webgrade') {
2260: $currentstring .= $token->[2];
2261: } elsif ($target eq 'tex') {
2262:
2263: # In case the user is missing a </td> or </th> tag:
2264:
2265: if ($Apache::londefdef::TD_redirection) {
2266: &end_td_tex($parstack,$parser,$safeeval);
2267: }
2268: $Apache::londefdef::table[-1]->end_row();
2269:
2270: #-----------------------------------------------
2271: # Old table code
2272: #-----------------------------------------------
2273:
2274: if (0) {
2275: if ($Apache::londefdef::TD_redirection) {
2276: &end_td_tex($parstack,$parser,$safeeval);
2277: }
2278: # Counter columns must be the maximum number of columns seen
2279: # in the table so far so:
2280: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2281: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2282: }
2283: }
2284:
2285:
2286: }
2287: return $currentstring;
2288: }
2289:
2290: #-- <td> tag (end tag optional)
2291: sub start_td {
2292: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2293: my $currentstring = '';
2294: if ($target eq 'web' || $target eq 'webgrade') {
2295: $currentstring = $token->[4];
2296: } elsif ($target eq 'tex') {
2297: $Apache::londefdef::TD_redirection = 1;
2298: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2299: }
2300: return $currentstring;
2301: }
2302:
2303: sub tag_check {
2304: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2305: my @ar=@$parstack;
2306: for (my $i=$#ar-1;$i>=0;$i--) {
2307: if (lc($$tagstack[$i]) eq $good_tag) {
2308: &start_td_tex($parstack,$parser,$safeeval);
2309: last;
2310: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2311: splice @ar, $i+1;
2312: &end_td_tex(\@ar,$parser,$safeeval);
2313: &start_td_tex($parstack,$parser,$safeeval);
2314: last;
2315: }
2316: }
2317: return '';
2318: }
2319:
2320: #
2321: # Factor out cell configuration hash generation:
2322: #
2323:
2324: sub cell_config_hash {
2325: my ($align, $rowspan, $colspan, $width) = @_;
2326: if ($rowspan ne '') {
2327: $rowspan =~ s/^\s+|\s+$//g;
2328: }
2329: if ($colspan ne '') {
2330: $colspan =~ s/^\s+|\s+$//g;
2331: }
2332: my %config;
2333: if ($align ne '') {
2334: $config{'halign'} = $align;
2335: }
2336: if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
2337: $config{'colspan'} = $colspan;
2338: }
2339: if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
2340: $config{'rowspan'} = $rowspan;
2341: }
2342: if ($width ne '') {
2343: $config{'width'} = $width;
2344: }
2345: return \%config;
2346: }
2347:
2348: sub start_td_tex {
2349: my ($parstack,$parser,$safeeval) = @_;
2350:
2351: # At this stage, an empty cell is created with the
2352: # appropriate rowspan/colspan and alignment
2353: # attributes, but empty of text. end_td_tex will
2354: # fetch the contents from the recursive parse and
2355: # fill the cell with them:
2356: my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
2357: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
2358: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
2359: my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
2360: my $config = &cell_config_hash($align, $rowspan, $colspan, $width);
2361:
2362: my $table = $Apache::londefdef::table[-1];
2363: $table->add_cell('', $config);
2364:
2365:
2366: #------------------------------------------------
2367: # Old table code.
2368: #------------------------------------------------
2369:
2370: if (0) {
2371:
2372: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2373: if ($alignchar eq '') {
2374: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2375: }
2376: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2377: $Apache::londefdef::table[-1]{'counter_columns'}++;
2378: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2379: if (defined $TeXwidth) {
2380: my $current_length=&recalc($TeXwidth);
2381: $current_length=~/(\d+\.?\d*)/;
2382: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2383: }
2384: }
2385: &Apache::lonxml::startredirection();
2386: return '';
2387: }
2388:
2389: sub end_td_tex {
2390:
2391: my $text = &Apache::lonxml::endredirection();
2392: my $table = $Apache::londefdef::table[-1];
2393: $table->append_cell_text($text);
2394:
2395: #-------------------------------------------------
2396: # Old table code
2397: #-------------------------------------------------
2398:
2399: if (0) {
2400: my ($parstack,$parser,$safeeval) = @_;
2401: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2402: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2403: my $data = &Apache::lonxml::endredirection();
2404:
2405: # The rowspan array of the table indicates which cells are part of a span.
2406: # n indicates the start of a span set of n rows.
2407: # ^ indicates a cell that continues a span set.
2408: # _ indicates the cell is at the bottom of a span set.
2409: # If this and subsequent cells are part of a rowspan, we must
2410: # push along the row until we find one that is not.
2411:
2412: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2413: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2414: # Part of a span.
2415: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2416: $current_column++;
2417: }
2418: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2419:
2420:
2421: # Get the column and row spans.
2422: # Colspan can be done via \multicolumn if I can figure out the data structs.
2423:
2424: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2425: if (!$colspan) {
2426: $colspan = 1;
2427: }
2428:
2429: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2430: if (!$rowspan) {
2431: $rowspan = 1;
2432: }
2433:
2434:
2435:
2436: for (my $c = 0; $c < $colspan; $c++) {
2437: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2438: for (my $i = 1; $i < $rowspan; $i++) {
2439: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2440: if ($i == ($rowspan-1)) {
2441: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2442: }
2443: }
2444: }
2445:
2446: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2447: if (defined $TeXwidth) {
2448: for (my $c = 0; $c < $colspan; $c++) {
2449: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2450: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2451: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2452: }
2453: } else {
2454: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2455: my $garbage_data=$data;
2456: my $fwidth=0;
2457: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2458: my $current_length=&recalc($1);
2459: $current_length=~/(\d+\.?\d*)/;
2460: if ($fwidth<$1) {$fwidth=$1;}
2461: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2462: }
2463: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2464: my $current_length=$1;
2465: if ($fwidth<$current_length) {$fwidth=$current_length;}
2466: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2467: }
2468: for (my $c = 0; $c < $colspan; $c++) {
2469: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2470: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2471: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2472: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2473: }
2474: } 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)*/) {
2475: my $garbage_data=$data;
2476: my $fwidth=0;
2477: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2478: my $current_length=&recalc($1);
2479: $current_length=~/(\d+\.?\d*)/;
2480: if ($fwidth<$1) {$fwidth=$1;}
2481: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2482: }
2483: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2484: my $current_length=&recalc($1);
2485: $current_length=~/(\d+\.?\d*)/;
2486: if ($fwidth<$1) {$fwidth=$1;}
2487: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2488: }
2489: for (my $c = 0; $c < $colspan; $c++) {
2490: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2491: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2492: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2493: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2494: }
2495: $data=~s/\\\\\s*$//;
2496: } else {
2497: $data=~s/^\s+(\S.*)/$1/;
2498: $data=~s/(.*\S)\s+$/$1/;
2499: $data=~s/(\s)+/$1/;
2500: my ($current_length,$min_length)=(0,0);
2501: if ($data=~/\\vskip/) {
2502: my $newdata=$data;
2503: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2504: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2505: foreach my $elementdata (@newdata) {
2506: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2507: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2508: my @words=split(/ /,$elementdata);
2509: foreach my $word (@words) {
2510: my $lengthword=2.5*&LATEX_length($word);
2511: if ($min_length<$lengthword) {$min_length=$lengthword;}
2512: }
2513: }
2514: } else {
2515: $current_length=2.5*&LATEX_length($data);
2516: my @words=split(/ /,$data);
2517: foreach my $word (@words) {
2518: my $lengthword=2*&LATEX_length($word);
2519: if ($min_length<$lengthword) {$min_length=$lengthword;}
2520: }
2521: }
2522: for (my $c = 0; $c < $colspan; $c++) {
2523: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2524: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2525: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2526: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2527: }
2528: }
2529: }
2530: # Substitute all of the tables nested in this cell in their appropriate places.
2531:
2532:
2533: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2534: for (my $in=0; $in<=$nested_count; $in++) {
2535: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2536: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2537: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2538: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2539:
2540: }
2541: # Should be be killing off the 'include' elements as they're used up?
2542:
2543: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2544:
2545:
2546:
2547:
2548: # the colspan array will indicate how many columns will be spanned by this
2549: # cell..this requires that counter_columns also be adjusted accordingly
2550: # so that the next bunch of text goes in the right cell. Note that since
2551: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2552: #
2553:
2554: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2555: for (my $i = 0; $i < ($colspan -1); $i++) {
2556: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2557: }
2558: for (my $r = 0; $r < $rowspan; $r++) {
2559: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2560: # Put empty text in spanned cols.
2561:
2562: }
2563:
2564: }
2565:
2566: return '';
2567: }
2568:
2569: sub end_td {
2570: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2571: my $currentstring = '';
2572: if ($target eq 'web' || $target eq 'webgrade') {
2573: $currentstring = $token->[2];
2574: } elsif ($target eq 'tex') {
2575: $Apache::londefdef::TD_redirection =0;
2576: &end_td_tex($parstack,$parser,$safeeval);
2577: }
2578: return $currentstring;
2579: }
2580:
2581: #-- <th> tag (end tag optional)
2582: sub start_th {
2583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2584: my $currentstring = '';
2585: if ($target eq 'web' || $target eq 'webgrade') {
2586: $currentstring = $token->[4];
2587: } elsif ($target eq 'tex') {
2588: $Apache::londefdef::TD_redirection = 1;
2589: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2590: }
2591: return $currentstring;
2592: }
2593:
2594: sub tagg_check {
2595: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2596: my @ar=@$parstack;
2597: for (my $i=$#ar-1;$i>=0;$i--) {
2598: if (lc($$tagstack[$i]) eq $good_tag) {
2599: &start_th_tex($parstack,$parser,$safeeval);
2600: last;
2601: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2602: splice @ar, $i+1;
2603: &end_th_tex(\@ar,$parser,$safeeval);
2604: &start_th_tex($parstack,$parser,$safeeval);
2605: last;
2606: }
2607: }
2608: return '';
2609: }
2610:
2611: sub start_th_tex {
2612: my ($parstack,$parser,$safeeval) = @_;
2613:
2614: my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
2615: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
2616: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);
2617:
2618: my $config = cell_config_hash($alignment, $rowspan, $colspan);
2619: my $table = $Apache::londefdef::table[-1];
2620: $table->add_cell('\textbf{', $config);
2621:
2622: #-------------------------------------------------------------------------------------
2623: #
2624: # Old table code.
2625: #
2626: #--------------------------------------------------------------------------------------
2627:
2628: if (0) {
2629:
2630:
2631: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2632: if ($alignchar eq '') {
2633: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2634: }
2635: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2636: $Apache::londefdef::table[-1]{'counter_columns'}++;
2637: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2638: if (defined $TeXwidth) {
2639: my $current_length=&recalc($TeXwidth);
2640: $current_length=~/(\d+\.?\d*)/;
2641: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2642: }
2643: }
2644:
2645: # Accept xml until the </th> tag.
2646:
2647: &Apache::lonxml::startredirection();
2648: return '';
2649: }
2650:
2651: sub end_th_tex {
2652: my ($parstack,$parser,$safeeval) = @_;
2653:
2654: my $table = $Apache::londefdef::table[-1];
2655: my $text = &Apache::lonxml::endredirection();
2656: $table->append_cell_text($text.'}');
2657:
2658: #-----------------------------------------------------------------------------
2659: # Old table code:
2660: #-----------------------------------------------------------------------------
2661:
2662: if (0) {
2663: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2664: my $data=&Apache::lonxml::endredirection();
2665: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2666: if (defined $TeXwidth) {
2667: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2668: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2669: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2670: } else {
2671: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2672: my $garbage_data=$data;
2673: my $fwidth=0;
2674: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2675: my $current_length=&recalc($1);
2676: $current_length=~/(\d+\.?\d*)/;
2677: if ($fwidth<$1) {$fwidth=$1;}
2678: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2679: }
2680: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2681: my $current_length=$1;
2682: if ($fwidth<$current_length) {$fwidth=$current_length;}
2683: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2684: }
2685: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2686: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2687: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2688: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2689: } else {
2690: $data=~s/^\s+(\S.*)/$1/;
2691: $data=~s/(.*\S)\s+$/$1/;
2692: $data=~s/(\s)+/$1/;
2693: my ($current_length,$min_length)=(0,0);
2694: if ($data=~/\\vskip/) {
2695: my $newdata=$data;
2696: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2697: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2698: foreach my $elementdata (@newdata) {
2699: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2700: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2701: my @words=split(/ /,$elementdata);
2702: foreach my $word (@words) {
2703: my $lengthword=2.5*&LATEX_length($word);
2704: if ($min_length<$lengthword) {$min_length=$lengthword;}
2705: }
2706: }
2707: } else {
2708: $current_length=2.5*&LATEX_length($data);
2709: my @words=split(/ /,$data);
2710: foreach my $word (@words) {
2711: my $lengthword=2*&LATEX_length($word);
2712: if ($min_length<$lengthword) {$min_length=$lengthword;}
2713: }
2714: }
2715: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2716: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2717: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2718: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2719: }
2720: }
2721: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2722: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2723: }
2724: #make data bold
2725: $data='\textbf{'.$data.'}';
2726: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2727: }
2728: return'';
2729: }
2730:
2731: sub end_th {
2732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2733: my $currentstring = &end_p(); # Close any open <p> in the row.
2734: if ($target eq 'web' || $target eq 'webgrade') {
2735: $currentstring .= $token->[2];
2736: } elsif ($target eq 'tex') {
2737: $Apache::londefdef::TD_redirection =0;
2738: &end_th_tex($parstack,$parser,$safeeval);
2739: }
2740: return $currentstring;
2741: }
2742:
2743: #-- <img> tag (end tag forbidden)
2744: #
2745: # Render the <IMG> tag.
2746: # <IMG> has the following attributes (in addition to the
2747: # standard HTML ones:
2748: # TeXwrap - Governs how the tex target will try to wrap text around
2749: # horizontally aligned images.
2750: # TeXwidth - The width of the image when rendered for print (mm).
2751: # TeXheight - The height of the image when rendered for print (mm)
2752: # (Note there seems to also be support for this as a % of page size)
2753: #
2754: sub start_img {
2755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2756: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2757: undef,1);
2758: if (! $src &&
2759: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2760: ) {
2761: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2762: return '';
2763: }
2764: unless ($src =~ m{^data\:image/gif;base64,}) {
2765: &Apache::lonxml::extlink($src);
2766: }
2767: my $currentstring = '';
2768: my $scaling = .3;
2769:
2770: # Render unto browsers that which are the browser's...
2771:
2772: if ($target eq 'web' || $target eq 'webgrade') {
2773: my $enc = ('yes' eq
2774: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2775: $safeeval)));
2776: unless ($src =~ m{^data\:image/gif;base64,}) {
2777: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2778: $enc);
2779: }
2780:
2781: # and render unto TeX that which is LaTeX
2782: } elsif ($target eq 'tex') {
2783: #
2784: # The alignment will require some superstructure to be put around
2785: # the \includegraphics stuff. At present we can only partially
2786: # simulate the alignments offered by html.
2787: #
2788: #
2789: my $align = lc(&Apache::lonxml::get_param('align',
2790: $parstack,
2791: $safeeval,
2792: undef,1));
2793: if(!$align) {
2794: $align = "bottom"; # This is html's default so it's ours too.
2795: }
2796: #
2797: &Apache::lonxml::debug("Alignemnt = $align");
2798: # LaTeX's image/text wrapping is really bad since it wants to
2799: # make figures float.
2800: # The user has the optional parameter (applicable only to l/r
2801: # alignment to use the picins/parpic directive to get wrapped text
2802: # this is also imperfect.. that's why we give them a choice...
2803: # so they can't yell at us for our choice.
2804: #
2805: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2806: $parstack,
2807: $safeeval,
2808: undef,0);
2809: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2810: if(!$latex_rendering) {
2811: $latex_rendering = "texwrap";
2812: }
2813: # using texwrap inside a table does not work. So, if after all of this,
2814: # texwrap is on, we turn it off if we detect we're in a table:
2815: #
2816: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2817: $latex_rendering = 'parpic';
2818: }
2819:
2820: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2821:
2822: #if original bmp/gif/jpg/png/svg file exist do following:
2823: my $origsrc=$src;
2824: my ($path,$file) = &get_eps_image($src);
2825: # &Apache::lonnet::logthis("Image source: $src result: $path $file");
2826: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2827: &Apache::lonxml::debug("path = $path file = $file src = $src");
2828: if (-e $src) {
2829: &Apache::lonxml::debug("$src exists");
2830: my ($height_param,$width_param)=
2831: &image_size($origsrc,0.3,$parstack,$safeeval);
2832: my $size;
2833: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2834: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2835: # Default size if not able to extract that (e.g. eps image).
2836:
2837: # &Apache::lonnet::logthis("Size = $size");
2838:
2839: $size='['.$size;
2840: $size=~s/,$/]/;
2841: $currentstring .= '\graphicspath{{'.$path.'}}'
2842: .'\includegraphics'.$size.'{'.$file.'} ';
2843: my $closure;
2844: ($currentstring, $closure) = &align_latex_image($align,
2845: $latex_rendering,
2846: $currentstring,
2847: $width_param,
2848: $height_param);
2849: $currentstring .= $closure;
2850:
2851: } else {
2852: &Apache::lonxml::debug("$src does not exist");
2853: #original image file doesn't exist so check the alt attribute
2854: my $alt =
2855: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2856: unless ($alt) {
2857: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2858: }
2859:
2860: if ($alt) { $currentstring .= ' '.$alt.' '; }
2861: }
2862:
2863: # And here's where the semi-quote breaks down: allow the user
2864: # to edit the beast as well by rendering the problem for edit:
2865: } elsif ($target eq 'edit') {
2866: my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
2867: $currentstring .=&Apache::edit::tag_start($target,$token);
2868: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2869: &Apache::edit::browse('src',undef,'alt',$only).' '.
2870: &Apache::edit::search('src',undef,'alt').'<br />';
2871: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2872: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2873: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2874: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2875: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2876: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2877: ['','bottom','middle','top','left','right'],$token,5);
2878: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2879: ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
2880: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2881: my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);
2882:
2883: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2884: ['no','yes'], $token, 2);
2885: if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
2886: $currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
2887: }
2888: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2889: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2890: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2891: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2892:
2893: if ($token->[2]{'src'}=~/\$/) {
2894: $currentstring.=&mt('Variable image source');
2895: } elsif ($token->[2]{'src'}=~/\S/) {
2896: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2897: if ($width) { $currentstring.=' width="'.$width.'" '; }
2898: if ($height) { $currentstring.=' height="'.$height.'" '; }
2899: $currentstring .= ' />';
2900: } else {
2901: $currentstring.=&mt("No image source specified");
2902: }
2903: } elsif ($target eq 'modified') {
2904: my ($osrc,$owidth,$oheight)=
2905: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2906: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2907: $safeeval,'src','alt','align',
2908: 'TeXwidth','TeXheight', 'TeXwrap',
2909: 'width','height','encrypturl');
2910: my ($nsrc,$nwidth,$nheight)=
2911: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2912: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2913: &image_replication($loc);
2914: my ($iwidth,$iheight);
2915: if (-e $loc) {
2916: my $image = Image::Magick->new;
2917: $image->Read($loc);
2918: ($iwidth, $iheight) = ($image->Get('width'),
2919: $image->Get('height'));
2920: }
2921: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2922: # changed image or no size specified,
2923: # if they didn't explicitly change the
2924: # width or height use the ones from the image
2925: if ($iwidth && $iheight) {
2926: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2927: $token->[2]{'width'} = $iwidth;$ctag=1;
2928: }
2929: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2930: $token->[2]{'height'}=$iheight;$ctag=1;
2931: }
2932: }
2933: }
2934: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2935: # if we don't have a width or height
2936: if ($iwidth && $cwidth && !$cheight) {
2937: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2938: }
2939: if ($iheight && $cheight && !$cwidth) {
2940: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2941: }
2942: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2943: }
2944:
2945: return $currentstring;
2946: }
2947:
2948: sub end_img {
2949: my ($target,$token) = @_;
2950: my $currentstring = '';
2951: if ($target eq 'web' || $target eq 'webgrade') {
2952: $currentstring = $token->[2];
2953: } elsif ($target eq 'tex') {
2954: $currentstring = '';
2955: }
2956: return $currentstring;
2957: }
2958:
2959: #-- <applet> tag (end tag required)
2960: sub start_applet {
2961: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2962:
2963: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2964: &Apache::lonxml::extlink($code);
2965: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2966: undef,1);
2967: &Apache::lonxml::extlink($archive);
2968: my $currentstring = '';
2969: if ($target eq 'web' || $target eq 'webgrade') {
2970: $currentstring = $token->[4];
2971: } elsif ($target eq 'tex') {
2972: # Turn off some stuff we can't be inside thank you LaTeX
2973:
2974: my $restart_sub = 0;
2975: my $restart_sup = 0;
2976:
2977: # Since <sub> and <sup> are simple tags it's ok to turn off/on
2978: # using the start_ stop_ functions.. those tags only care about
2979: # $target.
2980:
2981: if (&is_inside_of($tagstack, "sub")) {
2982: $restart_sub = 1;
2983: $currentstring .= &end_sub($target, $token, $tagstack,
2984: $parstack, $parser, $safeeval);
2985: }
2986: if (&is_inside_of($tagstack, "sup")) {
2987: $restart_sup = 1;
2988: $currentstring .= &end_sup($target, $token, $tagstack,
2989: $parstack, $parser, $safeeval);
2990: }
2991:
2992: # Now process the applet; just replace it with its alt attribute.
2993:
2994: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2995: $safeeval,undef,1);
2996: unless ($alttag) {
2997: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2998: undef,1);
2999: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
3000: $code);
3001: }
3002: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
3003: '.}\end{center}';
3004:
3005: # Turn stuff back on that we can't be inside of.
3006:
3007: if ($restart_sub) {
3008: $currentstring .= &start_sub($target, $token, $tagstack,
3009: $parstack, $parser, $safeeval);
3010: }
3011: if ($restart_sup) {
3012: $currentstring .= &start_sup($target, $token, $tagstack,
3013: $parstack, $parser, $safeeval);
3014: }
3015: }
3016: return $currentstring;
3017: }
3018:
3019: sub end_applet {
3020: my ($target,$token) = @_;
3021: my $currentstring = '';
3022: if ($target eq 'web' || $target eq 'webgrade') {
3023: $currentstring = $token->[2];
3024: } elsif ($target eq 'tex') {
3025: }
3026: return $currentstring;
3027: }
3028:
3029: #-- <embed> tag (end tag optional/required)
3030: sub start_embed {
3031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3032: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3033: &Apache::lonxml::extlink($src);
3034: my $currentstring = '';
3035: if ($target eq 'web' || $target eq 'webgrade') {
3036: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3037: } elsif ($target eq 'tex') {
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_embed {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web' || $target eq 'webgrade') {
3046: $currentstring = $token->[2];
3047: } elsif ($target eq 'tex') {
3048: # ./.
3049: }
3050: return $currentstring;
3051: }
3052:
3053: #-- <param> tag (end tag forbidden)
3054: sub start_param {
3055: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3056: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
3057: undef,1);
3058: if ($name =~/^cabbase$/i) {
3059: my $value=&Apache::lonxml::get_param('value',$parstack,
3060: $safeeval,undef,1);
3061: &Apache::lonxml::extlink($value);
3062: } elsif ($name eq 'flashvars') {
3063: if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
3064: eq 'application/x-shockwave-flash') {
3065: my $launcher =
3066: &Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
3067: if ($launcher) {
3068: &Apache::lonxml::extlink($launcher);
3069: }
3070: my $flashvars=&Apache::lonxml::get_param('value',$parstack,
3071: $safeeval,undef,1);
3072: if ($flashvars ne '') {
3073: foreach my $item (split(/\&/,$flashvars)) {
3074: my ($key,$value)=split(/=/,$item,2);
3075: if ($key eq 'content') {
3076: if ($value ne '') {
3077: my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
3078: &Apache::lonxml::extlink($dir.$value);
3079: }
3080: } elsif ($key eq 'thumb') {
3081: if ($value ne '') {
3082: &Apache::lonxml::extlink($value);
3083: }
3084: }
3085: }
3086: }
3087: }
3088: }
3089: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3090: if ($src ne '') {
3091: &Apache::lonxml::extlink($src);
3092: }
3093: my $currentstring = '';
3094: if ($target eq 'web' || $target eq 'webgrade') {
3095: my %toconvert;
3096: if ($src) { $toconvert{'src'}= $src; }
3097: if ($name=~/^cabbase$/i) {
3098: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3099: $safeeval,undef,1);
3100: }
3101: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3102: } elsif ($target eq 'tex') {
3103: }
3104: return $currentstring;
3105: }
3106:
3107: sub end_param {
3108: my ($target,$token) = @_;
3109: my $currentstring = '';
3110: if ($target eq 'web' || $target eq 'webgrade') {
3111: $currentstring = $token->[2];
3112: } elsif ($target eq 'tex') {
3113: }
3114: return $currentstring;
3115: }
3116:
3117: #-- <allow> tag
3118: sub start_allow {
3119: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3120: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3121: &Apache::lonxml::extlink($src);
3122:
3123: if ($target eq 'tex') { &image_replication($src); }
3124: my $result;
3125: if ($target eq 'edit') {
3126: $result .=&Apache::edit::tag_start($target,$token);
3127: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3128: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3129: } elsif ($target eq 'modified') {
3130: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3131: $safeeval,'src');
3132: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3133: }
3134: return $result;
3135: }
3136:
3137: sub end_allow {
3138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3139: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3140: return '';
3141: }
3142:
3143: #-- Frames (end tag required)
3144: #-- <frameset>
3145: sub start_frameset {
3146: my ($target,$token) = @_;
3147: my $currentstring = ''; # Close any pending para.
3148: if ($target eq 'web' || $target eq 'webgrade') {
3149: $currentstring =
3150: &Apache::loncommon::start_page($Apache::londefdef::title,
3151: $Apache::londefdef::head,
3152: {'add_entries' => $token->[2],
3153: # 'no_title' => 1,
3154: 'force_register' => 1,
3155: 'frameset' => 1,});
3156:
3157: }
3158: return $currentstring;
3159: }
3160:
3161: sub end_frameset {
3162: my ($target,$token) = @_;
3163: my $currentstring = '';
3164: if ($target eq 'web' || $target eq 'webgrade') {
3165: $currentstring = $token->[2];
3166: }
3167: return $currentstring;
3168: }
3169:
3170: #-- <xmp> (end tag required)
3171: sub start_xmp {
3172: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3173: my $currentstring = '';
3174: if ($target eq 'web' || $target eq 'webgrade') {
3175: $currentstring .= $token->[4];
3176: } elsif ($target eq 'tex') {
3177: $currentstring .= '\begin{verbatim}';
3178: }
3179: return $currentstring;
3180: }
3181:
3182: sub end_xmp {
3183: my ($target,$token) = @_;
3184: my $currentstring = '';
3185: if ($target eq 'web' || $target eq 'webgrade') {
3186: $currentstring .= $token->[2];
3187: } elsif ($target eq 'tex') {
3188: $currentstring .= '\end{verbatim}';
3189: }
3190: return $currentstring;
3191: }
3192:
3193: #-- <pre> (end tag required)
3194: sub start_pre {
3195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3196: my $currentstring = &end_p(); # close off pending <p>
3197: if ($target eq 'web' || $target eq 'webgrade') {
3198: $currentstring .= $token->[4];
3199: } elsif ($target eq 'tex') {
3200: $currentstring .= '\begin{verbatim}';
3201: &Apache::lonxml::disable_LaTeX_substitutions();
3202: }
3203: return $currentstring;
3204: }
3205:
3206: sub end_pre {
3207: my ($target,$token) = @_;
3208: my $currentstring = '';
3209: if ($target eq 'web' || $target eq 'webgrade') {
3210: $currentstring .= $token->[2];
3211: } elsif ($target eq 'tex') {
3212: $currentstring .= '\end{verbatim}';
3213: &Apache::lonxml::enable_LaTeX_substitutions();
3214: }
3215: return $currentstring;
3216: }
3217:
3218: #-- <insert>
3219: sub start_insert {
3220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3221: my $currentstring = '';
3222: if ($target eq 'web' || $target eq 'webgrade') {
3223: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3224: $currentstring .= '<b>'.$display.'</b>';;
3225: }
3226: return $currentstring;
3227: }
3228:
3229: sub end_insert {
3230: my ($target,$token) = @_;
3231: my $currentstring = '';
3232: if ($target eq 'web' || $target eq 'webgrade') {
3233: $currentstring .= '';
3234: }
3235: return $currentstring;
3236: }
3237:
3238: #-- <externallink>
3239: sub start_externallink {
3240: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3241: my $currentstring = '';
3242: if ($target eq 'web' || $target eq 'webgrade') {
3243: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3244: $currentstring .= '<b>'.$display.'</b>';;
3245: }
3246: return $currentstring;
3247: }
3248:
3249: sub end_externallink {
3250: my ($target,$token) = @_;
3251: my $currentstring = '';
3252: if ($target eq 'web' || $target eq 'webgrade') {
3253: $currentstring .= '';
3254: }
3255: return $currentstring;
3256: }
3257:
3258: #-- <blankspace heigth="">
3259: sub start_blankspace {
3260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3261: my $currentstring = &end_p(); # closes off any unclosed <p>
3262: if ($target eq 'tex') {
3263: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3264: $currentstring .= '\vskip '.$howmuch.' ';
3265: }
3266: return $currentstring;
3267: }
3268:
3269: sub end_blankspace {
3270: my ($target,$token) = @_;
3271: my $currentstring = '';
3272: if ($target eq 'tex') {
3273: $currentstring .= '';
3274: }
3275: return $currentstring;
3276: }
3277:
3278: #-- <abbr> tag (end tag required)
3279: sub start_abbr {
3280: my ($target,$token) = @_;
3281: my $currentstring = '';
3282: if ($target eq 'web' || $target eq 'webgrade') {
3283: $currentstring = $token->[4];
3284: }
3285: return $currentstring;
3286: }
3287:
3288: sub end_abbr {
3289: my ($target,$token) = @_;
3290: my $currentstring = '';
3291: if ($target eq 'web' || $target eq 'webgrade') {
3292: $currentstring = $token->[2];
3293: }
3294: return $currentstring;
3295: }
3296:
3297: #-- <acronym> tag (end tag required)
3298: sub start_acronym {
3299: my ($target,$token) = @_;
3300: my $currentstring = '';
3301: if ($target eq 'web' || $target eq 'webgrade') {
3302: $currentstring = $token->[4];
3303: }
3304: return $currentstring;
3305: }
3306:
3307: sub end_acronym {
3308: my ($target,$token) = @_;
3309: my $currentstring = '';
3310: if ($target eq 'web' || $target eq 'webgrade') {
3311: $currentstring = $token->[2];
3312: }
3313: return $currentstring;
3314: }
3315:
3316: #-- <area> tag (end tag forbidden)
3317: sub start_area {
3318: my ($target,$token) = @_;
3319: my $currentstring = '';
3320: if ($target eq 'web' || $target eq 'webgrade') {
3321: $currentstring = $token->[4];
3322: }
3323: return $currentstring;
3324: }
3325:
3326: sub end_area {
3327: my ($target,$token) = @_;
3328: my $currentstring = '';
3329: if ($target eq 'web' || $target eq 'webgrade') {
3330: $currentstring = $token->[2];
3331: }
3332: return $currentstring;
3333: }
3334:
3335: #-- <base> tag (end tag forbidden)
3336: sub start_base {
3337: my ($target,$token) = @_;
3338: my $currentstring = '';
3339: if ($target eq 'web' || $target eq 'webgrade') {
3340: $currentstring = $token->[4];
3341: }
3342: return $currentstring;
3343: }
3344:
3345: sub end_base {
3346: my ($target,$token) = @_;
3347: my $currentstring = '';
3348: if ($target eq 'web' || $target eq 'webgrade') {
3349: $currentstring = $token->[2];
3350: }
3351: return $currentstring;
3352: }
3353:
3354: #-- <bdo> tag (end tag required)
3355: sub start_bdo {
3356: my ($target,$token) = @_;
3357: my $currentstring = '';
3358: if ($target eq 'web' || $target eq 'webgrade') {
3359: $currentstring = $token->[4];
3360: }
3361: return $currentstring;
3362: }
3363:
3364: sub end_bdo {
3365: my ($target,$token) = @_;
3366: my $currentstring = '';
3367: if ($target eq 'web' || $target eq 'webgrade') {
3368: $currentstring = $token->[2];
3369: }
3370: return $currentstring;
3371: }
3372:
3373: #-- <bgsound> tag (end tag optional)
3374: sub start_bgsound {
3375: my ($target,$token) = @_;
3376: my $currentstring = '';
3377: if ($target eq 'web' || $target eq 'webgrade') {
3378: $currentstring = $token->[4];
3379: }
3380: return $currentstring;
3381: }
3382:
3383: sub end_bgsound {
3384: my ($target,$token) = @_;
3385: my $currentstring = '';
3386: if ($target eq 'web' || $target eq 'webgrade') {
3387: $currentstring = $token->[2];
3388: }
3389: return $currentstring;
3390: }
3391:
3392: #-- <blink> tag (end tag required)
3393: sub start_blink {
3394: my ($target,$token) = @_;
3395: my $currentstring = '';
3396: if ($target eq 'web' || $target eq 'webgrade') {
3397: $currentstring = $token->[4];
3398: }
3399: return $currentstring;
3400: }
3401:
3402: sub end_blink {
3403: my ($target,$token) = @_;
3404: my $currentstring = '';
3405: if ($target eq 'web' || $target eq 'webgrade') {
3406: $currentstring = $token->[2];
3407: }
3408: return $currentstring;
3409: }
3410:
3411: #-- <blockquote> tag (end tag required)
3412: sub start_blockquote {
3413: my ($target,$token) = @_;
3414: my $currentstring = &end_p(); # Close any unclosed <p>
3415: if ($target eq 'web' || $target eq 'webgrade') {
3416: $currentstring .= $token->[4];
3417: }
3418: if ($target eq 'tex') {
3419: $currentstring .= '\begin{quote}';
3420: }
3421: return $currentstring;
3422: }
3423:
3424: sub end_blockquote {
3425: my ($target,$token) = @_;
3426: my $currentstring = '';
3427: if ($target eq 'web' || $target eq 'webgrade') {
3428: $currentstring = $token->[2];
3429: }
3430: if ($target eq 'tex') {
3431: $currentstring = '\end{quote}';
3432: }
3433: return $currentstring;
3434: }
3435:
3436: #-- <button> tag (end tag required)
3437: sub start_button {
3438: my ($target,$token) = @_;
3439: my $currentstring = '';
3440: if ($target eq 'web' || $target eq 'webgrade') {
3441: $currentstring = $token->[4];
3442: }
3443: return $currentstring;
3444: }
3445:
3446: sub end_button {
3447: my ($target,$token) = @_;
3448: my $currentstring = '';
3449: if ($target eq 'web' || $target eq 'webgrade') {
3450: $currentstring = $token->[2];
3451: }
3452: return $currentstring;
3453: }
3454:
3455: #-- <caption> tag (end tag required)
3456: sub start_caption {
3457: my ($target,$token) = @_;
3458: my $currentstring = '';
3459: if ($target eq 'web' || $target eq 'webgrade') {
3460: $currentstring = $token->[4];
3461: }
3462: return $currentstring;
3463: }
3464:
3465: sub end_caption {
3466: my ($target,$token) = @_;
3467: my $currentstring = '';
3468: if ($target eq 'web' || $target eq 'webgrade') {
3469: $currentstring = $token->[2];
3470: }
3471: return $currentstring;
3472: }
3473:
3474: #-- <col> tag (end tag forbdden)
3475: sub start_col {
3476: my ($target,$token) = @_;
3477: my $currentstring = '';
3478: if ($target eq 'web' || $target eq 'webgrade') {
3479: $currentstring = $token->[4];
3480: }
3481: return $currentstring;
3482: }
3483:
3484: sub end_col {
3485: my ($target,$token) = @_;
3486: my $currentstring = '';
3487: if ($target eq 'web' || $target eq 'webgrade') {
3488: $currentstring = $token->[2];
3489: }
3490: return $currentstring;
3491: }
3492:
3493: #-- <colgroup tag (end tag optional)
3494: sub start_colgroup {
3495: my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
3496: my $currentstring = '';
3497: if ($target eq 'web' || $target eq 'webgrade') {
3498: $currentstring = $token->[4];
3499: }
3500: if ($target eq 'tex') {
3501: # TODO: Ensure this tag is in a table:
3502:
3503: # Fetch the attributes and build the hash for the
3504: # call to define_colgroup.
3505:
3506: my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
3507: my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);
3508:
3509: my %colgroup_params;
3510: if ($span ne '') {
3511: $colgroup_params{'span'} = $span;
3512: }
3513: if ($halign ne '') {
3514: $colgroup_params{'halign'} = $halign;
3515: }
3516:
3517: my $table = $Apache::londefdef::table[-1];
3518: $table->define_colgroup(\%colgroup_params);
3519:
3520: }
3521: return $currentstring;
3522: }
3523:
3524: sub end_colgroup {
3525: my ($target,$token) = @_;
3526: my $currentstring = '';
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring = $token->[2];
3529: }
3530: return $currentstring;
3531: }
3532:
3533:
3534: #-- <del> tag (end tag required)
3535: sub start_del {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web' || $target eq 'webgrade') {
3539: $currentstring = $token->[4];
3540: } elsif ($target eq 'tex') {
3541: &disable_para();
3542: $currentstring .= '\st{';
3543: }
3544: return $currentstring;
3545: }
3546:
3547: sub end_del {
3548: my ($target,$token) = @_;
3549: my $currentstring = '';
3550: if ($target eq 'web' || $target eq 'webgrade') {
3551: $currentstring = $token->[2];
3552: } elsif ($target eq 'tex') {
3553: &enable_para();
3554: $currentstring = '}';
3555: }
3556: return $currentstring;
3557: }
3558:
3559: #-- <fieldset> tag (end tag required)
3560: sub start_fieldset {
3561: my ($target,$token) = @_;
3562: my $currentstring = '';
3563: if ($target eq 'web' || $target eq 'webgrade') {
3564: $currentstring = $token->[4];
3565: }
3566: return $currentstring;
3567: }
3568:
3569: sub end_fieldset {
3570: my ($target,$token) = @_;
3571: my $currentstring = '';
3572: if ($target eq 'web' || $target eq 'webgrade') {
3573: $currentstring = $token->[2];
3574: }
3575: return $currentstring;
3576: }
3577:
3578: #-- <frame> tag (end tag forbidden)
3579: sub start_frame {
3580: my ($target,$token) = @_;
3581: my $currentstring = '';
3582: if ($target eq 'web' || $target eq 'webgrade') {
3583: $currentstring = $token->[4];
3584: }
3585: return $currentstring;
3586: }
3587:
3588: sub end_frame {
3589: my ($target,$token) = @_;
3590: my $currentstring = '';
3591: if ($target eq 'web' || $target eq 'webgrade') {
3592: $currentstring = $token->[2];
3593: }
3594: return $currentstring;
3595: }
3596:
3597: #-- <iframe> tag (end tag required)
3598: sub start_iframe {
3599: my ($target,$token) = @_;
3600: my $currentstring = '';
3601: if ($target eq 'web' || $target eq 'webgrade') {
3602: my ($src,$url,$query);
3603: if ($token->[2]->{'src'}) {
3604: $src = $token->[2]->{'src'};
3605: } elsif ($token->[2]->{'SRC'}) {
3606: $src = $token->[2]->{'SRC'};
3607: }
3608: if ($src) {
3609: ($url,$query) = ($src =~ /^([^?]+)\??([^?]*)$/);
3610: if ($query =~ /inhibitmenu=yes/) {
3611: $currentstring = $token->[4];
3612: } else {
3613: my $inhibit;
3614: if ($url =~ m{^[^/.].*\.x?html?$}) {
3615: $inhibit = 1;
3616: } elsif ($url =~ m{^/(uploaded|res)/.*\.x?html?$}) {
3617: $inhibit = 1;
3618: }
3619: if ($inhibit) {
3620: $currentstring = '<iframe ';
3621: foreach my $attrib (@{$token->[3]}) {
3622: if (lc($attrib) eq 'src') {
3623: if ($query) {
3624: $query.='&inhibitmenu=yes';
3625: } else {
3626: $query = 'inhibitmenu=yes';
3627: }
3628: $currentstring .= 'src="'.$url.'?'.$query.'" ';
3629: } else {
3630: $currentstring .= lc($attrib).'="'.$token->[2]->{$attrib}.'" ';
3631: }
3632: }
3633: $currentstring =~ s/\s+$//;
3634: if ($token->[4] =~ m{/>$}) {
3635: $currentstring .= ' />';
3636: } else {
3637: $currentstring .= '>';
3638: }
3639: } else {
3640: $currentstring = $token->[4];
3641: }
3642: }
3643: if (($url !~ m{^https?://}) && ($env{'request.course.id'})) {
3644: my $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
3645: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3646: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3647: if ($url =~ m{^([^/]|/uploaded/)}) {
3648: my $cleanhref = &clean_docs_httpref($url,$docuri,$cdom,$cnum);
3649: if ($cleanhref) {
3650: &Apache::lonxml::extlink($cleanhref);
3651: }
3652: } elsif (($url =~ m{/res/$LONCAPA::domain_re/}) && ($docuri =~ m{^\Q/uploaded/$cdom/$cnum/docs/\E})) {
3653: if (!&Apache::lonnet::allowed('bre',$url)) {
3654: if (&Apache::lonnet::is_on_map($url)) {
3655: &Apache::lonxml::extlink($url);
3656: }
3657: }
3658: }
3659: }
3660: } else {
3661: $currentstring = $token->[4];
3662: }
3663: }
3664: return $currentstring;
3665: }
3666:
3667: sub end_iframe {
3668: my ($target,$token) = @_;
3669: my $currentstring = '';
3670: if ($target eq 'web' || $target eq 'webgrade') {
3671: $currentstring = $token->[2];
3672: }
3673: return $currentstring;
3674: }
3675:
3676: #-- <ins> tag (end tag required)
3677: sub start_ins {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web' || $target eq 'webgrade') {
3681: $currentstring = $token->[4];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: sub end_ins {
3687: my ($target,$token) = @_;
3688: my $currentstring = '';
3689: if ($target eq 'web' || $target eq 'webgrade') {
3690: $currentstring = $token->[2];
3691: }
3692: return $currentstring;
3693: }
3694:
3695: #-- <isindex> tag (end tag forbidden)
3696: sub start_isindex {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web' || $target eq 'webgrade') {
3700: $currentstring = $token->[4];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: sub end_isindex {
3706: my ($target,$token) = @_;
3707: my $currentstring = '';
3708: if ($target eq 'web' || $target eq 'webgrade') {
3709: $currentstring = $token->[2];
3710: }
3711: return $currentstring;
3712: }
3713:
3714: #-- <keygen> tag (end tag forbidden)
3715: sub start_keygen {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web' || $target eq 'webgrade') {
3719: $currentstring = $token->[4];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: sub end_keygen {
3725: my ($target,$token) = @_;
3726: my $currentstring = '';
3727: if ($target eq 'web' || $target eq 'webgrade') {
3728: $currentstring = $token->[2];
3729: }
3730: return $currentstring;
3731: }
3732:
3733: #-- <label> tag
3734: sub start_label {
3735: my ($target,$token) = @_;
3736: my $currentstring = '';
3737: if ($target eq 'web' || $target eq 'webgrade') {
3738: $currentstring = $token->[4];
3739: }
3740: return $currentstring;
3741: }
3742:
3743: sub end_label {
3744: my ($target,$token) = @_;
3745: my $currentstring = '';
3746: if ($target eq 'web' || $target eq 'webgrade') {
3747: $currentstring = $token->[2];
3748: }
3749: return $currentstring;
3750: }
3751:
3752: #-- <layer> tag (end tag required)
3753: sub start_layer {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web' || $target eq 'webgrade') {
3757: $currentstring = $token->[4];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: sub end_layer {
3763: my ($target,$token) = @_;
3764: my $currentstring = '';
3765: if ($target eq 'web' || $target eq 'webgrade') {
3766: $currentstring = $token->[2];
3767: }
3768: return $currentstring;
3769: }
3770:
3771: #-- <legend> tag (end tag required)
3772: sub start_legend {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web' || $target eq 'webgrade') {
3776: $currentstring = $token->[4];
3777: }
3778: return $currentstring;
3779: }
3780:
3781: sub end_legend {
3782: my ($target,$token) = @_;
3783: my $currentstring = '';
3784: if ($target eq 'web' || $target eq 'webgrade') {
3785: $currentstring = $token->[2];
3786: }
3787: return $currentstring;
3788: }
3789:
3790: #-- <link> tag (end tag forbidden)
3791: sub start_link {
3792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3793: my $currentstring = '';
3794: if ($target eq 'web' || $target eq 'webgrade') {
3795: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3796: undef,1);
3797: &Apache::lonxml::extlink($href);
3798: $currentstring = $token->[4];
3799: }
3800: return $currentstring;
3801: }
3802:
3803: sub end_link {
3804: my ($target,$token) = @_;
3805: my $currentstring = '';
3806: if ($target eq 'web' || $target eq 'webgrade') {
3807: $currentstring = $token->[2];
3808: }
3809: return $currentstring;
3810: }
3811:
3812: #-- <marquee> tag (end tag optional)
3813: sub start_marquee {
3814: my ($target,$token) = @_;
3815: my $currentstring = '';
3816: if ($target eq 'web' || $target eq 'webgrade') {
3817: $currentstring = $token->[4];
3818: }
3819: return $currentstring;
3820: }
3821:
3822: sub end_marquee {
3823: my ($target,$token) = @_;
3824: my $currentstring = '';
3825: if ($target eq 'web' || $target eq 'webgrade') {
3826: $currentstring = $token->[2];
3827: }
3828: return $currentstring;
3829: }
3830:
3831: #-- <multicol> tag (end tag required)
3832: sub start_multicol {
3833: my ($target,$token) = @_;
3834: my $currentstring = &end_p(); # Close any pending <p>
3835: if ($target eq 'web' || $target eq 'webgrade') {
3836: $currentstring .= $token->[4];
3837: }
3838: return $currentstring;
3839: }
3840:
3841: sub end_multicol {
3842: my ($target,$token) = @_;
3843: my $currentstring = '';
3844: if ($target eq 'web' || $target eq 'webgrade') {
3845: $currentstring = $token->[2];
3846: }
3847: return $currentstring;
3848: }
3849:
3850: #-- <nobr> tag (end tag required)
3851: sub start_nobr {
3852: my ($target,$token) = @_;
3853: my $currentstring = '';
3854: if ($target eq 'web' || $target eq 'webgrade') {
3855: $currentstring = $token->[4];
3856: } elsif ($target eq 'tex') {
3857: $currentstring='\mbox{';
3858: }
3859: return $currentstring;
3860: }
3861:
3862: sub end_nobr {
3863: my ($target,$token) = @_;
3864: my $currentstring = '';
3865: if ($target eq 'web' || $target eq 'webgrade') {
3866: $currentstring = $token->[2];
3867: } elsif ($target eq 'tex') {
3868: $currentstring='}';
3869: }
3870: return $currentstring;
3871: }
3872:
3873: #-- <noembed> tag (end tag required)
3874: sub start_noembed {
3875: my ($target,$token) = @_;
3876: my $currentstring = '';
3877: if ($target eq 'web' || $target eq 'webgrade') {
3878: $currentstring = $token->[4];
3879: }
3880: return $currentstring;
3881: }
3882:
3883: sub end_noembed {
3884: my ($target,$token) = @_;
3885: my $currentstring = '';
3886: if ($target eq 'web' || $target eq 'webgrade') {
3887: $currentstring = $token->[2];
3888: }
3889: return $currentstring;
3890: }
3891:
3892: #-- <noframes> tag (end tag required)
3893: sub start_noframes {
3894: my ($target,$token) = @_;
3895: my $currentstring = '';
3896: if ($target eq 'web' || $target eq 'webgrade') {
3897: $currentstring = $token->[4];
3898: }
3899: return $currentstring;
3900: }
3901:
3902: sub end_noframes {
3903: my ($target,$token) = @_;
3904: my $currentstring = '';
3905: if ($target eq 'web' || $target eq 'webgrade') {
3906: $currentstring = $token->[2];
3907: }
3908: return $currentstring;
3909: }
3910:
3911: #-- <nolayer> tag (end tag required)
3912: sub start_nolayer {
3913: my ($target,$token) = @_;
3914: my $currentstring = '';
3915: if ($target eq 'web' || $target eq 'webgrade') {
3916: $currentstring = $token->[4];
3917: }
3918: return $currentstring;
3919: }
3920:
3921: sub end_nolayer {
3922: my ($target,$token) = @_;
3923: my $currentstring = '';
3924: if ($target eq 'web' || $target eq 'webgrade') {
3925: $currentstring = $token->[2];
3926: }
3927: return $currentstring;
3928: }
3929:
3930: #-- <noscript> tag (end tag required)
3931: sub start_noscript {
3932: my ($target,$token) = @_;
3933: my $currentstring = '';
3934: if ($target eq 'web' || $target eq 'webgrade') {
3935: $currentstring = $token->[4];
3936: }
3937: return $currentstring;
3938: }
3939:
3940: sub end_noscript {
3941: my ($target,$token) = @_;
3942: my $currentstring = '';
3943: if ($target eq 'web' || $target eq 'webgrade') {
3944: $currentstring = $token->[2];
3945: }
3946: return $currentstring;
3947: }
3948:
3949: #-- <object> tag (end tag required)
3950: sub start_object {
3951: my ($target,$token) = @_;
3952: my $currentstring = '';
3953: if ($target eq 'web' || $target eq 'webgrade') {
3954: $currentstring = $token->[4];
3955: }
3956: return $currentstring;
3957: }
3958:
3959: sub end_object {
3960: my ($target,$token) = @_;
3961: my $currentstring = '';
3962: if ($target eq 'web' || $target eq 'webgrade') {
3963: $currentstring = $token->[2];
3964: }
3965: return $currentstring;
3966: }
3967:
3968: #-- <optgroup> tag (end tag required)
3969: sub start_optgroup {
3970: my ($target,$token) = @_;
3971: my $currentstring = '';
3972: if ($target eq 'web' || $target eq 'webgrade') {
3973: $currentstring = $token->[4];
3974: }
3975: return $currentstring;
3976: }
3977:
3978: sub end_optgroup {
3979: my ($target,$token) = @_;
3980: my $currentstring = '';
3981: if ($target eq 'web' || $target eq 'webgrade') {
3982: $currentstring = $token->[2];
3983: }
3984: return $currentstring;
3985: }
3986:
3987: #-- <samp> tag (end tag required)
3988: sub start_samp {
3989: my ($target,$token) = @_;
3990: my $currentstring = '';
3991: if ($target eq 'web' || $target eq 'webgrade') {
3992: $currentstring = $token->[4];
3993: } elsif ($target eq 'tex') {
3994: $currentstring='\texttt{';
3995: }
3996: return $currentstring;
3997: }
3998:
3999: sub end_samp {
4000: my ($target,$token) = @_;
4001: my $currentstring = '';
4002: if ($target eq 'web' || $target eq 'webgrade') {
4003: $currentstring = $token->[2];
4004: } elsif ($target eq 'tex') {
4005: $currentstring='}';
4006: }
4007: return $currentstring;
4008: }
4009:
4010: #-- <server> tag
4011: sub start_server {
4012: my ($target,$token) = @_;
4013: my $currentstring = '';
4014: if ($target eq 'web' || $target eq 'webgrade') {
4015: $currentstring = $token->[4];
4016: }
4017: return $currentstring;
4018: }
4019:
4020: sub end_server {
4021: my ($target,$token) = @_;
4022: my $currentstring = '';
4023: if ($target eq 'web' || $target eq 'webgrade') {
4024: $currentstring = $token->[2];
4025: }
4026: return $currentstring;
4027: }
4028:
4029: #-- <spacer> tag (end tag forbidden)
4030: sub start_spacer {
4031: my ($target,$token) = @_;
4032: my $currentstring = &end_p(); # Close off any open <p> tag.
4033: if ($target eq 'web' || $target eq 'webgrade') {
4034: $currentstring .= $token->[4];
4035: }
4036: return $currentstring;
4037: }
4038:
4039: sub end_spacer {
4040: my ($target,$token) = @_;
4041: my $currentstring = '';
4042: if ($target eq 'web' || $target eq 'webgrade') {
4043: $currentstring = $token->[2];
4044: }
4045: return $currentstring;
4046: }
4047:
4048: #-- <span> tag (end tag required)
4049: sub start_span {
4050: my ($target,$token) = @_;
4051: my $currentstring = '';
4052: if ($target eq 'web' || $target eq 'webgrade') {
4053: $currentstring = $token->[4];
4054: }
4055: return $currentstring;
4056: }
4057:
4058: sub end_span {
4059: my ($target,$token) = @_;
4060: my $currentstring = '';
4061: if ($target eq 'web' || $target eq 'webgrade') {
4062: $currentstring = $token->[2];
4063: }
4064: return $currentstring;
4065: }
4066:
4067: #-- <tbody> tag (end tag optional)
4068: sub start_tbody {
4069: my ($target,$token) = @_;
4070: my $currentstring = '';
4071: if ($target eq 'web' || $target eq 'webgrade') {
4072: $currentstring = $token->[4];
4073: }
4074: if ($target eq 'tex') {
4075: # TODO: Ensure this tag is within a table:
4076:
4077: my $table = $Apache::londefdef::table[-1];
4078: $table->start_body();
4079: }
4080: return $currentstring;
4081: }
4082:
4083: sub end_tbody {
4084: my ($target,$token) = @_;
4085: my $currentstring = '';
4086: if ($target eq 'web' || $target eq 'webgrade') {
4087: $currentstring = $token->[2];
4088: }
4089: if($target eq 'tex') {
4090: # TODO: Ensure this tag is within a table:
4091:
4092: my $table = $Apache::londefdef::table[-1];
4093: $table->end_body();
4094: }
4095: return $currentstring;
4096: }
4097:
4098: #-- <tfoot> tag (end tag optional)
4099: sub start_tfoot {
4100: my ($target,$token) = @_;
4101: my $currentstring = '';
4102: if ($target eq 'web' || $target eq 'webgrade') {
4103: $currentstring = $token->[4];
4104: }
4105: if ($target eq 'tex') {
4106: # TODO: ensure this is within a table tag.
4107: my $table = $Apache::londefdef::table[-1];
4108: $table->start_foot();
4109: }
4110: return $currentstring;
4111: }
4112:
4113: sub end_tfoot {
4114: my ($target,$token) = @_;
4115: my $currentstring = '';
4116: if ($target eq 'web' || $target eq 'webgrade') {
4117: $currentstring = $token->[2];
4118: }
4119: if ($target eq 'tex') {
4120: # TODO: Ensure this is in side a table
4121: my $table = $Apache::londefdef::table[-1];
4122: $table->end_foot();
4123: }
4124: return $currentstring;
4125: }
4126:
4127: #-- <thead> tag (end tag optional)
4128: sub start_thead {
4129: my ($target,$token) = @_;
4130: my $currentstring = '';
4131: if ($target eq 'web' || $target eq 'webgrade') {
4132: $currentstring = $token->[4];
4133: }
4134: if ($target eq 'tex') {
4135: # Assume we're in a table... TODO: Verify that and ignore tag if not.
4136: my $table = $Apache::londefdef::table[-1];
4137: $table->start_head();
4138: }
4139: return $currentstring;
4140: }
4141:
4142: sub end_thead {
4143: my ($target,$token) = @_;
4144: my $currentstring = '';
4145: if ($target eq 'web' || $target eq 'webgrade') {
4146: $currentstring = $token->[2];
4147: }
4148: if ($target eq 'tex') {
4149: # TODO: Verify we are in a table and ignore tag if not.
4150:
4151: my $table = $Apache::londefdef::table[-1];
4152: $table->end_head();
4153: }
4154: return $currentstring;
4155: }
4156:
4157: #-- <var> tag
4158: sub start_var {
4159: my ($target,$token) = @_;
4160: my $currentstring = '';
4161: if ($target eq 'web' || $target eq 'webgrade') {
4162: $currentstring = $token->[4];
4163: } elsif ($target eq 'tex') {
4164: $currentstring = '\textit{';
4165: }
4166: return $currentstring;
4167: }
4168:
4169: sub end_var {
4170: my ($target,$token) = @_;
4171: my $currentstring = '';
4172: if ($target eq 'web' || $target eq 'webgrade') {
4173: $currentstring = $token->[2];
4174: } elsif ($target eq 'tex') {
4175: $currentstring = '}';
4176: }
4177: return $currentstring;
4178: }
4179:
4180: #-- <wbr> tag (end tag forbidden)
4181: sub start_wbr {
4182: my ($target,$token) = @_;
4183: my $currentstring = '';
4184: if ($target eq 'web' || $target eq 'webgrade') {
4185: $currentstring = $token->[4];
4186: }
4187: return $currentstring;
4188: }
4189:
4190: sub end_wbr {
4191: my ($target,$token) = @_;
4192: my $currentstring = '';
4193: if ($target eq 'web' || $target eq 'webgrade') {
4194: $currentstring = $token->[2];
4195: }
4196: return $currentstring;
4197: }
4198:
4199: #-- <hideweboutput> tag
4200: sub start_hideweboutput {
4201: my ($target,$token) = @_;
4202: if ($target eq 'web' || $target eq 'webgrade') {
4203: &Apache::lonxml::startredirection();
4204: }
4205: return '';
4206: }
4207:
4208: sub end_hideweboutput {
4209: my ($target,$token) = @_;
4210: my $currentstring = '';
4211: if ($target eq 'web' || $target eq 'webgrade') {
4212: $currentstring = &Apache::lonxml::endredirection();
4213: }
4214: return '';
4215: }
4216:
4217:
4218: sub image_replication {
4219: my $src = shift;
4220: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4221: #replicates eps or ps
4222: my $epssrc = my $pssrc = $src;
4223: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4224: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4225: if (not -e $epssrc && not -e $pssrc) {
4226: my $result=&Apache::lonnet::repcopy($epssrc);
4227: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4228: }
4229: return '';
4230: }
4231:
4232:
4233:
4234: sub resize_image {
4235: my ($height_param, $width_param, $scaling,
4236: $parstack, $safeeval, $depth, $cis) = @_;
4237:
4238: # First apply the scaling...
4239:
4240: $height_param = $height_param * $scaling;
4241: $width_param = $width_param * $scaling;
4242:
4243: #do we have any specified LaTeX size of the picture?
4244: my $toget='TeXwidth';
4245: if ($cis) {
4246: $toget=lc($toget);
4247: }
4248: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4249: $safeeval,$depth,$cis);
4250: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4251: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4252: $safeeval,$depth,$cis);
4253: #do we have any specified web size of the picture?
4254: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4255: $depth,1);
4256: if ($TeXwidth) {
4257: my $old_width_param=$width_param;
4258: if ($TeXwidth=~/(\d+)\s*\%/) {
4259: $width_param = $1*$env{'form.textwidth'}/100;
4260: } else {
4261: $width_param = $TeXwidth;
4262: }
4263: if ($TeXheight) {
4264: $height_param = $TeXheight;
4265: } elsif ($old_width_param) {
4266: $height_param=$TeXwidth/$old_width_param*$height_param;
4267: }
4268: } elsif ($TeXheight) {
4269: $height_param = $TeXheight;
4270: if ($height_param) {
4271: $width_param = $TeXheight/$height_param*$width_param;
4272: }
4273: } elsif ($width) {
4274: my $old_width_param=$width_param;
4275: $width_param = $width*$scaling;
4276: if ($old_width_param) {
4277: $height_param=$width_param/$old_width_param*$height_param;
4278: }
4279: }
4280: if ($width_param > $env{'form.textwidth'}) {
4281: my $old_width_param=$width_param;
4282: $width_param =0.95*$env{'form.textwidth'};
4283: if ($old_width_param) {
4284: $height_param=$width_param/$old_width_param*$height_param;
4285: }
4286: }
4287:
4288: return ($height_param, $width_param);
4289: }
4290:
4291: sub image_size {
4292: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4293:
4294: #size of image from gif/jpg/jpeg/png
4295: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4296: if (-e $ressrc) {
4297: $src = $ressrc;
4298: }
4299: my $image = Image::Magick->new;
4300: my $current_figure = $image->Read($src);
4301: my $width_param = $image->Get('width');
4302: my $height_param = $image->Get('height');
4303: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4304: undef($image);
4305:
4306: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4307: $scaling, $parstack, $safeeval,
4308: $depth, $cis);
4309:
4310: return ($height_param, $width_param);
4311: }
4312:
4313: sub image_width {
4314: my ($height, $width) = &image_size(@_);
4315: return $width;
4316: }
4317: # Not yet 100% sure this is correct in all circumstances..
4318: # due to my uncertainty about mods to image_size.
4319: #
4320: sub image_height {
4321: my ($height, $width) = &image_size(@_);
4322: return $height;
4323: }
4324:
4325: sub get_eps_image {
4326: my ($src)=@_;
4327: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4328:
4329: # In order to prevent the substitution of the alt text, we need to
4330: # be sure the orig_src file is on system now so:
4331:
4332: if (! -e $orig_src) {
4333: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4334: }
4335: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4336: my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg|svg)/i);
4337: $src=~s/\.(bmp|gif|png|jpg|jpeg|svg)$/\.eps/i;
4338: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4339: &Apache::lonxml::debug("Filelocation gives: $src");
4340: if (! -e $src) {
4341: &Apache::lonxml::debug("$src does not exist");
4342: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4343: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4344: #if replication failed try to find ps file
4345: $src=~s/\.eps$/\.ps/;
4346: &Apache::lonxml::debug("Now looking for $src");
4347: #if no ps file try to replicate it.
4348: my $didrepcopy = &Apache::lonnet::repcopy($src);
4349: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4350: if ( (not -e $src) ||
4351: ($didrepcopy ne 'ok')) {
4352: &Apache::lonxml::debug("Failed to find or replicate $src");
4353:
4354: #if replication failed try to produce eps file dynamically
4355: $src=~s/\.ps$/\.eps/;
4356: if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
4357: my $newsrc=$orig_src;
4358: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4359: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4360: print FILE ("$newsrc\n");
4361: close(FILE);
4362: }
4363: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4364: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4365: if ($sext ne "") { # Put the ext. back in to uniquify.
4366: $src =~ s/\.eps$/$sext.eps/;
4367: }
4368:
4369: }
4370:
4371: }
4372: } else {
4373: # If the postscript file has spaces in its name,
4374: # LaTeX will gratuitiously vomit. Therefore
4375: # queue such files for copy with " " replaced by "_".
4376: # printout.pm will know them by their .ps or .eps extensions.
4377: my $newsrc = $orig_src;
4378: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4379: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4380: print FILE "$src\n";
4381: close FILE;
4382: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4383: $src=~s|/home/httpd/html/priv/[^/]+/([^/]*)/|/home/httpd/prtspool/$1/|;
4384: }
4385: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4386: $path =~ s/ /\_/g;
4387: $file =~ s/ /\_/g;
4388: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4389: return ($path.'/',$file);
4390: }
4391:
4392: sub eps_generation {
4393: my ($src,$file,$width_param) = @_;
4394: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4395: if (open(my $tmpfile,">>$filename")) {
4396: print $tmpfile "$src\n";
4397: close($tmpfile);
4398: }
4399: my $newsrc = $src;
4400: $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
4401: $newsrc=~s{/home/httpd/html/res}{};
4402: $newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
4403: $newsrc=~s{/\./}{/};
4404: $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
4405: if ($newsrc=~m{/home/httpd/lonUsers/}) {
4406: $newsrc=~s{/home/httpd/lonUsers}{};
4407: $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
4408: }
4409: if ($newsrc=~m{/userfiles/}) {
4410: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4411: } else {
4412: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4413: }
4414: }
4415:
4416: sub file_path {
4417: my $src=shift;
4418: my ($file,$path);
4419: if ($src =~ m!(.*)/([^/]*)$!) {
4420: $file = $2;
4421: $path = $1.'/';
4422: }
4423: return $file,$path;
4424: }
4425:
4426:
4427: sub recalc {
4428: my $argument = shift;
4429: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4430: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4431: my $value=$1;
4432: my $units=$2;
4433: if ($units eq 'cm') {
4434: $value*=10;
4435: } elsif ($units eq 'in') {
4436: $value*=25.4;
4437: } elsif ($units eq 'pc') {
4438: $value*=(25.4*12/72.27);
4439: } elsif ($units eq 'pt') {
4440: $value*=(25.4/72.27);
4441: }
4442: return $value.' mm';
4443: }
4444:
4445: sub LATEX_length {
4446: my $garbage=shift;
4447: $garbage=~s/^\s+$//;
4448: $garbage=~s/^\s+(\S.*)/$1/;#space before
4449: $garbage=~s/(.*\S)\s+$/$1/;#space after
4450: $garbage=~s/(\s)+/$1/;#only one space
4451: $garbage=~s/(\\begin\{([^\}]+)}|\\end\{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4452: $garbage=~s/(\$\_\{|\$\_|\$\^\{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4453: $garbage=~s/([^\\])\$/$1/g;#$
4454: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^\{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4455: $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;
4456: $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;
4457: $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;
4458: $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;
4459: $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;
4460: $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;
4461: $garbage=~s/(\\hat\{([^}]+)}|\\check\{([^}]+)}|\\dot\{([^}]+)}|\\breve\{([^}]+)}|\\acute\{([^}]+)}|\\ddot\{([^}]+)}|\\grave\{([^}]+)}|\\tilde\{([^}]+)}|\\mathring\{([^}]+)}|\\bar\{([^}]+)}|\\vec\{([^}]+)})/$1/g;
4462: #remove some other LaTeX command
4463: $garbage=~s|\\(\w+)\\|\\|g;
4464: $garbage=~s|\\(\w+)(\s*)|$2|g;
4465: $garbage=~s|\+|11|g;
4466: my $value=length($garbage);
4467: return $value;
4468: }
4469:
4470:
4471: sub align_latex_image {
4472: my ($align, $latex_rendering, $image, $width, $height) = @_;
4473: my $currentstring; # The 1/2 wrapped image.
4474: my $closure; # The closure of the wrappage.
4475:
4476: # if it's none just return it back
4477: if ($latex_rendering eq 'none') {
4478: return ($image,'');
4479: }
4480:
4481: # If there's an alignment specification we need to honor it here.
4482: # For the horizontal alignments, we will also honor the
4483: # value of the latex specfication. The default is parbox,
4484: # and that's used for illegal values too.
4485: #
4486: # Even though we set a default alignment value, the user
4487: # could have given us an illegal value. In that case we
4488: # just use the default alignment of bottom..
4489: $currentstring = '';
4490: if ($align eq "top") {
4491: $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
4492: $closure = '}';
4493: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
4494: my $offset = $height/2;
4495: $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
4496: $closure = '}';
4497: } elsif ($align eq "left") {
4498: if ($latex_rendering eq "parpic") {
4499: $currentstring .= '\parpic[l]{'.$image;
4500: $closure = '}';
4501: } elsif ($latex_rendering eq "parbox") {
4502: $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
4503: .$image;
4504: $closure = '\end{minipage}';
4505: } elsif ($latex_rendering eq "wrapfigure"
4506: || $latex_rendering ne 'none') { # wrapfig render
4507: $currentstring .=
4508: '\begin{wrapfigure}{l}{'.$width.'mm}'
4509: .'\scalebox{1.0}{'.$image;
4510: $closure = '}\end{wrapfigure}';
4511: }
4512: } elsif ($align eq "right") {
4513: if ($latex_rendering eq "parpic") {
4514: $currentstring .= '\parpic[r]{'.$image;
4515: $closure = '}';
4516: } elsif ($latex_rendering eq "parbox") {
4517: $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
4518: .$image;
4519: $closure = '\end{minipage}';
4520: } elsif ($latex_rendering eq "wrapfigure"
4521: || $latex_rendering ne 'none') { # wrapfig render
4522: $currentstring .=
4523: '\begin{wrapfigure}{r}{'.$width.'mm}'
4524: .'\scalebox{1.0}{'.$image;
4525: $closure = '}\end{wrapfigure}';
4526: }
4527: } else { # Bottom is also default.
4528: # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
4529: $currentstring .= "{$image";
4530: $closure = '}';
4531: }
4532: return ($currentstring, $closure);
4533: }
4534:
4535:
4536: sub is_inside_of {
4537: my ($tagstack, $tag) = @_;
4538: my @stack = @$tagstack;
4539: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4540: if ($stack[$i] eq $tag) {
4541: return 1;
4542: }
4543: }
4544: return 0;
4545: }
4546:
4547:
4548: #
4549: # This sub provides the typical LaTeX prefix matter for tex output:
4550: #
4551: sub latex_header {
4552: my ($mode) = @_;
4553: my $currentstring = '';
4554:
4555: $currentstring .=
4556: "\n% &Apache::lonxml::londefdef \n" .
4557: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
4558: if (($env{'form.latex_type'}=~'batchmode') ||
4559: (!$env{'request.role.adv'}) ||
4560: ($mode eq 'batchmode')) {$currentstring .='\batchmode';}
4561: $currentstring .= '\newcommand{\keephidden}[1]{}'.
4562: '\renewcommand{\deg}{$^{\circ}$}'.
4563: '\usepackage{multirow}'."\n".
4564: '\usepackage{longtable}'."\n".
4565: '\usepackage{textcomp}'."\n".
4566: '\usepackage{makeidx}'."\n".
4567: '\usepackage[dvips]{graphicx}'."\n".
4568: '\usepackage{wrapfig}'."\n".
4569: '\usepackage{picins}'."\n".
4570: '\usepackage[T1]{fontenc}'."\n".
4571: '\usepackage{lmodern}'."\n".
4572: '\usepackage[postscript]{ucs}'."\n".
4573: '\usepackage[utf8x]{inputenc}'."\n".
4574: '\usepackage{pifont}'."\n".
4575: '\usepackage{latexsym}'."\n".
4576: '\usepackage{epsfig}'."\n".
4577: '\usepackage{xtab}'."\n".
4578: '\usepackage{tabularx}'."\n".
4579: '\usepackage{booktabs}'."\n".
4580: '\usepackage{array}'."\n".
4581: '\usepackage{colortbl}'."\n".
4582: '\usepackage{xcolor}'."\n".
4583: '\usepackage{calc}'."\n".
4584: '\usepackage{amsmath}'."\n".
4585: '\usepackage{soul}'."\n".
4586: '\usepackage{amssymb}'."\n".
4587: '\usepackage{amsfonts}'."\n".
4588: '\usepackage{amsthm}'."\n".
4589: '\usepackage{amscd}'."\n".
4590: '\usepackage{actuarialangle}'."\n";
4591: if($env{'form.pdfFormFields'} eq 'yes') {
4592: $currentstring .= '\usepackage{hyperref}'.
4593: '\usepackage{eforms}'.
4594: '\usepackage{tabularx}';
4595: }
4596:
4597: $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}}'.
4598: '\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}}';
4599: $currentstring .= '\begin{document}';
4600:
4601: return $currentstring;
4602:
4603: }
4604:
4605: sub clean_docs_httpref {
4606: my ($href,$docuri,$cdom,$cnum) = @_;
4607: if ($docuri eq '') {
4608: $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
4609: }
4610: if ($cdom eq '') {
4611: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4612: }
4613: if ($cnum eq '') {
4614: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4615: }
4616: my $cleanhref;
4617: if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/)(.+/)[^/]+$}) {
4618: my $prefix = $1;
4619: my $relpath = $2;
4620: my ($hrefpath,$fname);
4621: if ($href =~ m{^/}) {
4622: if ($href =~ m{^\Q$prefix\E(.+/)([^/]+)$}) {
4623: $hrefpath = $1;
4624: $fname = $2;
4625: } else {
4626: return $cleanhref;
4627: }
4628: } else {
4629: if ($href =~ m{/}) {
4630: (my $path,$fname) = ($href =~ m{^(.*)/([^/]*)$});
4631: $hrefpath = $relpath.$path;
4632: if ($path eq '') {
4633: $hrefpath =~ s{/$}{};
4634: }
4635: } else {
4636: $fname = $href;
4637: $hrefpath = $relpath;
4638: $hrefpath =~ s{/$}{};
4639: }
4640: }
4641: if ($fname ne '') {
4642: my $cleanrelpath;
4643: foreach my $dir (split(/\//,$hrefpath)) {
4644: next if ($dir eq '.');
4645: if ($dir eq '..') {
4646: $cleanrelpath =~ s{([^/]+/)$}{};
4647: } else {
4648: $cleanrelpath .= $dir.'/';
4649: }
4650: }
4651: if ($cleanrelpath ne '') {
4652: $cleanhref = $prefix.$cleanrelpath.$fname;
4653: } else {
4654: $cleanhref = $prefix.$fname;
4655: }
4656: }
4657: }
4658: return $cleanhref;
4659: }
4660:
4661: =pod
4662:
4663: =head1 NAME
4664:
4665: Apache::londefdef.pm
4666:
4667: =head1 SYNOPSIS
4668:
4669: Tags Default Definition Module
4670:
4671: This is part of the LearningOnline Network with CAPA project
4672: described at http://www.lon-capa.org.
4673:
4674:
4675: =head1 NOTABLE SUBROUTINES
4676:
4677: =over
4678:
4679: =item start_hideweboutput()
4680:
4681: =item end_hideweboutput()
4682:
4683: =item image_replication()
4684:
4685: =item resize_image()
4686:
4687: Get correct sizing parameter for an image given
4688: it's initial ht. and wid. This allows sizing of
4689: images that are generated on-the-fly (e.g. gnuplot)
4690: as well as serving as a utility for image_size.
4691:
4692: Parameter:
4693: height_param
4694: width_param - Initial picture dimensions.
4695: scaling - A scale factor.
4696: parstack, - the current stack of tag attributes
4697: from the xml parser
4698: safeeval, - pointer to the safespace
4699: depth, - from what level in the stack to look for attributes
4700: (assumes -1 if unspecified)
4701: cis - look for attrubutes case insensitively
4702: (assumes false)
4703:
4704: Returns:
4705: height, width - new dimensions.
4706:
4707: =item image_size()
4708:
4709: =item image_width()
4710:
4711: =item image_height()
4712:
4713: =item get_eps_image()
4714:
4715: =item eps_generation()
4716:
4717: =item file_path()
4718:
4719: =item recalc()
4720:
4721: Converts a measurement in to mm from any of
4722: the other valid LaTeX units of measure.
4723: If the units of measure are missing from the
4724: parameter, it is assumed to be in and returned
4725: with mm units of measure
4726:
4727: =item LATEX_length()
4728:
4729: =item align_latex_image()
4730:
4731: Wrap image 'stuff' inside of the LaTeX required to implement
4732: alignment:
4733: align_tex_image(align, latex_rendering, image)
4734: Where:
4735: align - The HTML alignment specification.
4736: latex_rendering - rendering hint for latex.
4737: image - The LaTeX needed to insert the image itsef.
4738: width,height - dimensions of the image.
4739: Returns:
4740: The 1/2 wrapped image and the stuff required to close the
4741: wrappage. This allows e.g. randomlabel to insert more stuff
4742: into the closure.
4743:
4744:
4745: =item is_inside_of($tagstack, $tag)
4746: This sub returns true if the current state of Xml processing is inside of the tag.
4747: Parameters:
4748: tagstack - The tagstack from the parser.
4749: tag - The tag (without the <>'s.).
4750: Sample usage:
4751: if (is_inside_of($tagstack "table")) {
4752: I'm in a table....
4753: }
4754:
4755: =item clean_docs_httpref($href,$docuri,$cdom,$cnum)
4756: HTML pages uploaded to a course which contain dependencies either from iframes,
4757: javascript files or objects (FlashPlayerSwf, MediaSrc, XMPSrc, ConfigurationSrc,
4758: and PosterImageSrc) for which dependency is another file uploaded to the same
4759: course.
4760:
4761: Required input:
4762: href - dependency (either a relative URL, or an absolute URL)
4763: Optional inputs:
4764: docuri - URL of HTML page containing the dependency
4765: cdom - Course domain
4766: cnum - CourseID
4767:
4768: Output:
4769: returns an absolute URL constructed from the href provided, and the calling context.
4770: (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
4771: /uploaded/$cdom/$cnum/supplemental/).
4772:
4773: =back
4774:
4775: =cut
4776:
4777:
4778: 1;
4779: __END__
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