File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
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1.264:
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Wed Mar 16 21:35:17 2005 UTC (19 years, 2 months ago) by
raeburn
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lonnet::repcopy() and lonnet::repcopy_userfile() now return strings, with simplified lower-case-only responses, for consistency with other return values from lonnet functions.
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.264 2005/03/16 21:35:17 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::File();
46: use Image::Magick;
47: use Apache::lonmenu();
48: use Apache::lonmeta();
49: use Apache::Constants qw(:common);
50:
51:
52: BEGIN {
53:
54: &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
55:
56: }
57:
58: sub initialize_londefdef {
59: $Apache::londefdef::TD_redirection=0;
60: @Apache::londefdef::table = ();
61: $Apache::londefdef::select=0;
62: undef(@Apache::londefdef::description);
63: @Apache::londefdef::DD=(0);
64: @Apache::londefdef::DT=(0);
65: @Apache::londefdef::seenDT=(0);
66: $Apache::londefdef::list_index=0;
67: }
68:
69: #======================= TAG SUBROUTINES =====================
70: #-- <output>
71: sub start_output {
72: my ($target) = @_;
73: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
74: return '';
75: }
76: sub end_output {
77: my ($target) = @_;
78: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
79: return '';
80: }
81: #-- <m> tag
82: sub start_m {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
84: my $currentstring = '';
85: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
86: if ($target eq 'web' || $target eq 'analyze') {
87: &Apache::lonxml::debug("M is starting with:$inside:");
88: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
89: if ($eval eq 'on') {
90: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
91: #&Apache::lonxml::debug("M is evaulated to:$inside:");
92: }
93: $currentstring = &Apache::lontexconvert::converted(\$inside);
94: if ($Apache::lontexconvert::errorstring) {
95: &Apache::lonxml::warning("tth error: ".
96: $Apache::lontexconvert::errorstring);
97: $Apache::lontexconvert::errorstring='';
98: }
99: #&Apache::lonxml::debug("M is ends with:$currentstring:");
100: $Apache::lonxml::post_evaluate=0;
101: } elsif ($target eq 'tex') {
102: $currentstring = $inside;
103: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
104: if ($eval eq 'on') {
105: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
106: }
107: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
108: # detect simple math mode entry exits, and convert them
109: # to use \ensuremath
110: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
111: $currentstring=~s/^\$//;
112: $currentstring=~s/\$$//;
113: $currentstring='\ensuremath{'.$currentstring.'}';
114: }
115: $Apache::lonxml::post_evaluate=0;
116: }
117: return $currentstring;
118: }
119:
120: sub end_m {
121: my ($target,$token) = @_;
122: my $currentstring = '';
123: if ($target eq 'tex') {
124: $currentstring = "";
125: }
126: return $currentstring;
127: }
128:
129: sub start_tthoption {
130: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
131: my $result;
132: if ($target eq 'web') {
133: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
134: $inside=~s/^\s*//;
135: if ($ENV{'browser.mathml'}) {
136: &tth::ttmoptions($inside);
137: } else {
138: &tth::tthoptions($inside);
139: }
140: }
141: return $result;
142: }
143:
144: sub end_tthoption {
145: my ($target,$token) = @_;
146: my $result;
147: return $result;
148: }
149:
150: #-- <html> tag (end tag optional)
151: sub start_html {
152: my ($target,$token) = @_;
153: my $currentstring = '';
154: my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
155: &Apache::lontexconvert::init_tth();
156: if ($target eq 'web' || $target eq 'edit') {
157: $currentstring = &Apache::lonxml::xmlbegin();
158: } elsif ($target eq 'tex') {
159: @Apache::londefdef::table = ();
160: $currentstring .= '\documentclass[letterpaper]{article}';
161: if (($ENV{'form.latex_type'}=~'batchmode') ||
162: (!$ENV{'request.role.adv'})) {$currentstring .='\batchmode';}
163: $currentstring .= '\newcommand{\keephidden}[1]{}'.
164: '\renewcommand{\deg}{$^{\circ}$}'.
165: '\usepackage{longtable}'.
166: '\usepackage{textcomp}'.
167: '\usepackage{makeidx}'.
168: '\usepackage[dvips]{graphicx}'.
169: '\usepackage{picins}'.
170: '\usepackage{epsfig}'.
171: '\usepackage{calc}'.
172: '\usepackage{amsmath}'.
173: '\usepackage{amssymb}'.
174: '\usepackage{amsfonts}'.
175: '\usepackage{amsthm}'.
176: '\usepackage{amscd}'.
177: '\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}}'.
178: '\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}}';
179: }
180: return $currentstring;
181: }
182:
183: sub end_html {
184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
185: my $currentstring = '';
186: if ($target eq 'web') {
187: $currentstring = '</html>';
188: }
189: return $currentstring;
190: }
191:
192: #-- <head> tag (end tag optional)
193: sub start_head {
194: my ($target,$token) = @_;
195: my $currentstring = '';
196: if ($target eq 'web') {
197: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
198: }
199: return $currentstring;
200: }
201:
202: sub end_head {
203: my ($target,$token) = @_;
204: my $currentstring = '';
205: if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
206: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
207: $token->[2];
208: }
209: return $currentstring;
210: }
211:
212: #-- <map> tag (end tag required)
213: sub start_map {
214: my ($target,$token) = @_;
215: my $currentstring = '';
216: if ($target eq 'web') {
217: $currentstring = $token->[4];
218: }
219: return $currentstring;
220: }
221:
222: sub end_map {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web') {
226: $currentstring = $token->[2];
227: }
228: return $currentstring;
229: }
230:
231: #-- <select> tag (end tag required)
232: sub start_select {
233: my ($target,$token) = @_;
234: my $currentstring = '';
235: if ($target eq 'web') {
236: $currentstring = $token->[4];
237: } elsif ($target eq 'tex') {
238: $Apache::londefdef::select=0;
239: }
240: return $currentstring;
241: }
242:
243: sub end_select {
244: my ($target,$token) = @_;
245: my $currentstring = '';
246: if ($target eq 'web') {
247: $currentstring = $token->[2];
248: }
249: return $currentstring;
250: }
251:
252: #-- <option> tag (end tag optional)
253: sub start_option {
254: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
255: my $currentstring = '';
256: if ($target eq 'web') {
257: $currentstring = $token->[4];
258: } elsif ($target eq 'tex') {
259: $Apache::londefdef::select++;
260: if ($Apache::londefdef::select == 1) {
261: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
262: } else {
263: $currentstring='\keephidden{';
264: }
265: }
266: return $currentstring;
267: }
268:
269: sub end_option {
270: my ($target,$token) = @_;
271: my $currentstring = '';
272: if ($target eq 'web') {
273: $currentstring = $token->[2];
274: } elsif ($target eq 'tex') {
275: $currentstring='}';
276: }
277: return $currentstring;
278: }
279:
280: #-- <input> tag (end tag forbidden)
281: sub start_input {
282: my ($target,$token) = @_;
283: my $currentstring = '';
284: if ($target eq 'web') {
285: $currentstring = $token->[4];
286: }
287: return $currentstring;
288: }
289:
290: sub end_input {
291: my ($target,$token) = @_;
292: my $currentstring = '';
293: if ($target eq 'web') {
294: $currentstring = $token->[2];
295: }
296: return $currentstring;
297: }
298:
299: #-- <textarea> tag (end tag required)
300: sub start_textarea {
301: my ($target,$token) = @_;
302: my $currentstring = '';
303: if ($target eq 'web') {
304: $currentstring = $token->[4];
305: }
306: return $currentstring;
307: }
308:
309: sub end_textarea {
310: my ($target,$token) = @_;
311: my $currentstring = '';
312: if ($target eq 'web') {
313: $currentstring = $token->[2];
314: }
315: return $currentstring;
316: }
317:
318: #-- <form> tag (end tag required)
319: sub start_form {
320: my ($target,$token) = @_;
321: my $currentstring = '';
322: if ($target eq 'web') {
323: $currentstring = $token->[4];
324: }
325: return $currentstring;
326: }
327:
328: sub end_form {
329: my ($target,$token) = @_;
330: my $currentstring = '';
331: if ($target eq 'web') {
332: $currentstring = $token->[2];
333: }
334: return $currentstring;
335: }
336:
337: #-- <title> tag (end tag required)
338: sub start_title {
339: my ($target,$token) = @_;
340: my $currentstring = '';
341: if ($target eq 'web') {
342: $currentstring = $token->[4];
343: } elsif ($target eq 'tex') {
344: $currentstring .= '\keephidden{Title of the document: '
345: }
346: if ($target eq 'meta') {
347: $currentstring='<title>';
348: &start_output($target);
349: }
350: return $currentstring;
351: }
352:
353: sub end_title {
354: my ($target,$token) = @_;
355: my $currentstring = '';
356: if ($target eq 'web') {
357: $currentstring = $token->[2];
358: } elsif ($target eq 'tex') {
359: $currentstring .= '}';
360: }
361: if ($target eq 'meta') {
362: &end_output($target);
363: $currentstring='</title>';
364: }
365: return $currentstring;
366: }
367:
368: #-- <meta> tag (end tag forbidden)
369: sub start_meta {
370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
371: my $currentstring = '';
372: if ($target eq 'web') {
373: my $args='';
374: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
375: if ($args eq '') {
376: &Apache::lonxml::get_all_text("/meta",$parser);
377: } else {
378: $currentstring = $token->[4];
379: }
380: } elsif ($target eq 'meta') {
381: unless (&Apache::lonxml::get_param
382: ('http-equiv',$parstack,$safeeval,undef,1)) {
383: my $name=$token->[2]->{'name'};
384: $name=~tr/A-Z/a-z/;
385: $name=~s/\s/\_/gs;
386: $name=~s/\W//gs;
387: if ($name) {
388: $currentstring='<'.$name;
389: my $display=&Apache::lonxml::get_param
390: ('display',$parstack,$safeeval,undef,1);
391: if ($display) {
392: $display=~s/\"/\'/g;
393: $currentstring.=' display="'.$display.'"';
394: }
395: $currentstring.='>'.
396: &Apache::lonxml::get_param
397: ('content',$parstack,$safeeval,undef,1).
398: '</'.$name.'>';
399: }
400: my $display=&Apache::lonxml::get_param
401: ('display',$parstack,$safeeval,undef,1);
402: if ($display) {
403: $display=&HTML::Entities::encode($display,'<>&"');
404: $currentstring.='<'.$name.'.display>'.$display.
405: '</'.$name.'.display>';
406: }
407: }
408: } elsif ($target eq 'tex') {
409: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
410: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
411: if ((not defined $content) && (not defined $name)) {
412: &Apache::lonxml::startredirection();
413: }
414: }
415: return $currentstring;
416: }
417:
418: sub end_meta {
419: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
420: my $currentstring = '';
421: if ($target eq 'web') {
422: my $args='';
423: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
424: if ($args ne '') {
425: $currentstring = $token->[4];
426: }
427: } elsif ($target eq 'tex') {
428: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
429: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
430: if ((not defined $content) && (not defined $name)) {
431: &Apache::lonxml::endredirection();
432: }
433: }
434: return $currentstring;
435: }
436:
437: # accessrule
438: sub start_accessrule {
439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
440: my $currentstring = '';
441: my $eff=&Apache::lonxml::get_param
442: ('effect',$parstack,$safeeval,undef,1);
443: my $realm=&Apache::lonxml::get_param
444: ('realm',$parstack,$safeeval,undef,1);
445: my $role=&Apache::lonxml::get_param
446: ('role',$parstack,$safeeval,undef,1);
447: $realm=~s/\s+//g;
448: $realm=~s/\//\_/g;
449: $realm=~s/^\_//;
450: $realm=~s/\W/\;/g;
451: $role=~s/\s+//g;
452: $role=~s/\//\_/g;
453: $role=~s/\W/\;/g;
454: if ($target eq 'web') {
455: my $args='';
456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
457: if ($args eq '') {
458: &Apache::lonxml::get_all_text("/accessrule",$parser);
459: } else {
460: $currentstring = $token->[4];
461: }
462: }
463: if ($target eq 'meta') {
464: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
465: }
466: return $currentstring;
467: }
468:
469: sub end_accessrule {
470: my ($target,$token,$tagstack,$parstack,$parser) = @_;
471: my $currentstring = '';
472: if ($target eq 'web') {
473: my $args='';
474: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
475: if ($args ne '') {
476: $currentstring = $token->[4];
477: }
478: }
479: return $currentstring;
480: }
481:
482: #-- <body> tag (end tag required)
483: sub start_body {
484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
485: my $currentstring = '';
486:
487: if ($target eq 'web') {
488: if ($Apache::lonhomework::parsing_a_problem) {
489: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
490: return '';
491: }
492: if (!$Apache::lonxml::registered &&
493: $ENV{'request.state'} eq 'published') {
494: $currentstring.='<head>'.
495: &Apache::lonmenu::registerurl(undef,$target).'</head>';
496: }
497: # Accessibility
498: if ($ENV{'browser.imagesuppress'} eq 'on') {
499: delete($token->[2]->{'background'});
500: }
501: if ($ENV{'browser.fontenhance'} eq 'on') {
502: my $style='';
503: foreach my $key (keys(%{$token->[2]})) {
504: if ($key =~ /^style$/i) {
505: $style.=$token->[2]->{$key}.';';
506: delete($token->[2]->{$key});
507: }
508: }
509: $token->[2]->{'style'}=$style.'; font-size: x-large;';
510: }
511: if ($ENV{'browser.blackwhite'} eq 'on') {
512: delete($token->[2]->{'font'});
513: delete($token->[2]->{'link'});
514: delete($token->[2]->{'alink'});
515: delete($token->[2]->{'vlink'});
516: delete($token->[2]->{'bgcolor'});
517: delete($token->[2]->{'background'});
518: }
519: # Overload loads
520: my $onLoad='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^onload$/i) {
523: $onLoad.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
528: my $onUnload='';
529: foreach my $key (keys(%{$token->[2]})) {
530: if ($key =~ /^onunload$/i) {
531: $onUnload.=$token->[2]->{$key}.';';
532: delete($token->[2]->{$key});
533: }
534: }
535: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
536: ';'.$onUnload;
537:
538: if ($ENV{'request.state'} ne 'construct') {
539: $currentstring .= '<'.$token->[1];
540: }
541: foreach (keys %{$token->[2]}) {
542: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
543: }
544: if ($ENV{'request.state'} ne 'construct') {
545: $currentstring.='>';
546: }
547: if ($ENV{'request.state'} ne 'published') {
548: my $remote=($ENV{'environment.remote'} ne 'off');
549: $currentstring=&Apache::loncommon::bodytag(undef,undef,
550: $currentstring,$remote);
551: $currentstring.=(<<EDITBUTTON);
552: <form method="post">
553: <input type="submit" name="editmode" accesskey="e" value="Edit" />
554: </form>
555: EDITBUTTON
556: } else {
557: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
558: }
559: $currentstring.=&Apache::lonxml::message_location();
560: } elsif ($target eq 'tex') {
561: $currentstring = '\begin{document}';
562: }
563: return $currentstring;
564: }
565:
566: sub end_body {
567: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
568: my $currentstring = '';
569: if ($target eq 'web') {
570: $currentstring = &Apache::lonxml::xmlend($target,$parser);
571: } elsif ($target eq 'tex') {
572: $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
573: }
574: return $currentstring;
575: }
576:
577: #-- <center> tag (end tag required)
578: sub start_center {
579: my ($target,$token) = @_;
580: my $currentstring = '';
581: if ($target eq 'web') {
582: $currentstring = $token->[4];
583: } elsif ($target eq 'tex') {
584: $currentstring = '\begin{center}';
585: }
586: return $currentstring;
587: }
588:
589: sub end_center {
590: my ($target,$token) = @_;
591: my $currentstring = '';
592: if ($target eq 'web') {
593: $currentstring = $token->[2];
594: } elsif ($target eq 'tex') {
595: $currentstring = '\end{center}';
596: }
597: return $currentstring;
598: }
599:
600: #-- <b> tag (end tag required)
601: sub start_b {
602: my ($target,$token) = @_;
603: my $currentstring = '';
604: if ($target eq 'web') {
605: $currentstring = $token->[4];
606: } elsif ($target eq 'tex') {
607: $currentstring = '\textbf{';
608: }
609: return $currentstring;
610: }
611:
612: sub end_b {
613: my ($target,$token) = @_;
614: my $currentstring = '';
615: if ($target eq 'web') {
616: $currentstring = $token->[2];
617: } elsif ($target eq 'tex') {
618: $currentstring = '}';
619: }
620: return $currentstring;
621: }
622:
623: #-- <strong> tag (end tag required)
624: sub start_strong {
625: my ($target,$token) = @_;
626: my $currentstring = '';
627: if ($target eq 'web') {
628: $currentstring = $token->[4];
629: } elsif ($target eq 'tex') {
630: $currentstring = '\textbf{';
631: }
632: return $currentstring;
633: }
634:
635: sub end_strong {
636: my ($target,$token) = @_;
637: my $currentstring = '';
638: if ($target eq 'web') {
639: $currentstring = $token->[2];
640: } elsif ($target eq 'tex') {
641: $currentstring = '}';
642: }
643: return $currentstring;
644: }
645:
646: #-- <h1> tag (end tag required)
647: sub start_h1 {
648: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
649: my $currentstring = '';
650: if ($target eq 'web') {
651: $currentstring .= $token->[4];
652: } elsif ($target eq 'tex') {
653: my $pre;
654: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
655: if ($align eq 'center') {
656: $pre='\begin{center}';
657: } elsif ($align eq 'left') {
658: $pre='\rlap{';
659: } elsif ($align eq 'right') {
660: $pre=' \hfill \llap{';
661: }
662: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
663: if (not defined $TeXsize) {$TeXsize="large";}
664: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
665: } elsif ($target eq 'meta') {
666: $currentstring='<subject>';
667: &start_output($target);
668: }
669: return $currentstring;
670: }
671:
672: sub end_h1 {
673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
674: my $currentstring = '';
675: if ($target eq 'web') {
676: $currentstring .= $token->[2];
677: } elsif ($target eq 'tex') {
678: my $post='\vskip 0 mm ';
679: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
680: if ($align eq 'center') {
681: $post='\end{center}';
682: } elsif ($align eq 'left') {
683: $post='} \hfill'.'\vskip 0 mm ';
684: } elsif ($align eq 'right') {
685: $post='}'.'\vskip 0 mm ';
686: }
687: $currentstring .= '}}'.$post;
688: } elsif ($target eq 'meta') {
689: &end_output($target);
690: $currentstring='</subject>';
691: }
692: return $currentstring;
693: }
694:
695: #-- <h2> tag
696: sub start_h2 {
697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
698: my $currentstring = '';
699: if ($target eq 'web') {
700: $currentstring .= $token->[4];
701: } elsif ($target eq 'tex') {
702: my $pre;
703: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
704: if ($align eq 'center') {
705: $pre='\begin{center}';
706: } elsif ($align eq 'left') {
707: $pre='\rlap{';
708: } elsif ($align eq 'right') {
709: $pre=' \hfill \llap{';
710: }
711: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
712: if (not defined $TeXsize) {$TeXsize="large";}
713: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
714: }
715: return $currentstring;
716: }
717:
718: sub end_h2 {
719: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
720: my $currentstring = '';
721: if ($target eq 'web') {
722: $currentstring .= $token->[2];
723: } elsif ($target eq 'tex') {
724: my $post='\vskip 0 mm ';
725: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
726: if ($align eq 'center') {
727: $post='\end{center}';
728: } elsif ($align eq 'left') {
729: $post='} \hfill'.'\vskip 0 mm ';
730: } elsif ($align eq 'right') {
731: $post='}'.'\vskip 0 mm ';
732: }
733: $currentstring .= '}}'.$post;
734: }
735: return $currentstring;
736: }
737:
738: #-- <h3> tag
739: sub start_h3 {
740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
741: my $currentstring = '';
742: if ($target eq 'web') {
743: $currentstring .= $token->[4];
744: } elsif ($target eq 'tex') {
745: my $pre;
746: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
747: if ($align eq 'center') {
748: $pre='\begin{center}';
749: } elsif ($align eq 'left') {
750: $pre='\rlap{';
751: } elsif ($align eq 'right') {
752: $pre=' \hfill \llap{';
753: }
754: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
755: if (not defined $TeXsize) {$TeXsize="large";}
756: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
757: }
758: return $currentstring;
759: }
760:
761: sub end_h3 {
762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
763: my $currentstring = '';
764: if ($target eq 'web') {
765: $currentstring .= $token->[2];
766: } elsif ($target eq 'tex') {
767: my $post='\vskip 0 mm ';
768: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
769: if ($align eq 'center') {
770: $post='\end{center}';
771: } elsif ($align eq 'left') {
772: $post='} \hfill'.'\vskip 0 mm ';
773: } elsif ($align eq 'right') {
774: $post='}'.'\vskip 0 mm ';
775: }
776: $currentstring .= '}}'.$post;
777: }
778: return $currentstring;
779: }
780:
781: #-- <h4> tag
782: sub start_h4 {
783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
784: my $currentstring = '';
785: if ($target eq 'web') {
786: $currentstring .= $token->[4];
787: } elsif ($target eq 'tex') {
788: my $pre;
789: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
790: if ($align eq 'center') {
791: $pre='\begin{center}';
792: } elsif ($align eq 'left') {
793: $pre='\rlap{';
794: } elsif ($align eq 'right') {
795: $pre=' \hfill \llap{';
796: }
797: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
798: if (not defined $TeXsize) {$TeXsize="large";}
799: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
800: }
801: return $currentstring;
802: }
803:
804: sub end_h4 {
805: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
806: my $currentstring = '';
807: if ($target eq 'web') {
808: $currentstring .= $token->[2];
809: } elsif ($target eq 'tex') {
810: my $post='\vskip 0 mm ';
811: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
812: if ($align eq 'center') {
813: $post='\end{center}';
814: } elsif ($align eq 'left') {
815: $post='} \hfill'.'\vskip 0 mm ';
816: } elsif ($align eq 'right') {
817: $post='}'.'\vskip 0 mm ';
818: }
819: $currentstring .= '}}'.$post;
820: }
821: return $currentstring;
822: }
823:
824: #-- <h5> tag
825: sub start_h5 {
826: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
827: my $currentstring = '';
828: if ($target eq 'web') {
829: $currentstring .= $token->[4];
830: } elsif ($target eq 'tex') {
831: my $pre;
832: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
833: if ($align eq 'center') {
834: $pre='\begin{center}';
835: } elsif ($align eq 'left') {
836: $pre='\rlap{';
837: } elsif ($align eq 'right') {
838: $pre=' \hfill \llap{';
839: }
840: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
841: if (not defined $TeXsize) {$TeXsize="large";}
842: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
843: }
844: return $currentstring;
845: }
846:
847: sub end_h5 {
848: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
849: my $currentstring = '';
850: if ($target eq 'web') {
851: $currentstring .= $token->[2];
852: } elsif ($target eq 'tex') {
853: my $post='\vskip 0 mm ';
854: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
855: if ($align eq 'center') {
856: $post='\end{center}';
857: } elsif ($align eq 'left') {
858: $post='} \hfill'.'\vskip 0 mm ';
859: } elsif ($align eq 'right') {
860: $post='}'.'\vskip 0 mm ';
861: }
862: $currentstring .= '}}'.$post;
863: }
864: return $currentstring;
865: }
866:
867: #-- <h6> tag
868: sub start_h6 {
869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
870: my $currentstring = '';
871: if ($target eq 'web') {
872: $currentstring .= $token->[4];
873: } elsif ($target eq 'tex') {
874: my $pre;
875: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
876: if ($align eq 'center') {
877: $pre='\begin{center}';
878: } elsif ($align eq 'left') {
879: $pre='\rlap{';
880: } elsif ($align eq 'right') {
881: $pre=' \hfill \llap{';
882: }
883: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
884: if (not defined $TeXsize) {$TeXsize="large";}
885: $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
886: }
887: return $currentstring;
888: }
889:
890: sub end_h6 {
891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
892: my $currentstring = '';
893: if ($target eq 'web') {
894: $currentstring .= $token->[2];
895: } elsif ($target eq 'tex') {
896: my $post='\vskip 0 mm ';
897: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
898: if ($align eq 'center') {
899: $post='\end{center}';
900: } elsif ($align eq 'left') {
901: $post='} \hfill'.'\vskip 0 mm ';
902: } elsif ($align eq 'right') {
903: $post='}'.'\vskip 0 mm ';
904: }
905: $currentstring .= '}}'.$post;
906: }
907: return $currentstring;
908: }
909:
910: #--- <cite> tag (end tag required)
911: sub start_cite {
912: my ($target,$token) = @_;
913: my $currentstring = '';
914: if ($target eq 'web') {
915: $currentstring .= $token->[4];
916: } elsif ($target eq 'tex') {
917: $currentstring .= '\textit{';
918: }
919: return $currentstring;
920: }
921:
922: sub end_cite {
923: my ($target,$token) = @_;
924: my $currentstring = '';
925: if ($target eq 'web') {
926: $currentstring .= $token->[2];
927: } elsif ($target eq 'tex') {
928: $currentstring .= '}';
929: }
930: return $currentstring;
931: }
932:
933: #-- <i> tag (end tag required)
934: sub start_i {
935: my ($target,$token) = @_;
936: my $currentstring = '';
937: if ($target eq 'web') {
938: $currentstring .= $token->[4];
939: } elsif ($target eq 'tex') {
940: $currentstring .= '\textit{';
941: }
942: return $currentstring;
943: }
944:
945: sub end_i {
946: my ($target,$token) = @_;
947: my $currentstring = '';
948: if ($target eq 'web') {
949: $currentstring .= $token->[2];
950: } elsif ($target eq 'tex') {
951: $currentstring .= '}';
952: }
953: return $currentstring;
954: }
955:
956: #-- <address> tag (end tag required)
957: sub start_address {
958: my ($target,$token) = @_;
959: my $currentstring = '';
960: if ($target eq 'web') {
961: $currentstring .= $token->[4];
962: } elsif ($target eq 'tex') {
963: $currentstring .= '\textit{';
964: }
965: return $currentstring;
966: }
967:
968: sub end_address {
969: my ($target,$token) = @_;
970: my $currentstring = '';
971: if ($target eq 'web') {
972: $currentstring .= $token->[2];
973: } elsif ($target eq 'tex') {
974: $currentstring .= '}';
975: }
976: return $currentstring;
977: }
978:
979: #-- <dfn> tag (end tag required)
980: sub start_dfn {
981: my ($target,$token) = @_;
982: my $currentstring = '';
983: if ($target eq 'web') {
984: $currentstring .= $token->[4];
985: } elsif ($target eq 'tex') {
986: $currentstring .= '\textit{';
987: }
988: return $currentstring;
989: }
990:
991: sub end_dfn {
992: my ($target,$token) = @_;
993: my $currentstring = '';
994: if ($target eq 'web') {
995: $currentstring .= $token->[2];
996: } elsif ($target eq 'tex') {
997: $currentstring .= '}';
998: }
999: return $currentstring;
1000: }
1001:
1002: #-- <tt> tag (end tag required)
1003: sub start_tt {
1004: my ($target,$token) = @_;
1005: my $currentstring = '';
1006: if ($target eq 'web') {
1007: $currentstring .= $token->[4];
1008: } elsif ($target eq 'tex') {
1009: $currentstring .= '\texttt{';
1010: }
1011: return $currentstring;
1012: }
1013:
1014: sub end_tt {
1015: my ($target,$token) = @_;
1016: my $currentstring = '';
1017: if ($target eq 'web') {
1018: $currentstring .= $token->[2];
1019: } elsif ($target eq 'tex') {
1020: $currentstring .= '}';
1021: }
1022: return $currentstring;
1023: }
1024:
1025: #-- <kbd> tag (end tag required)
1026: sub start_kbd {
1027: my ($target,$token) = @_;
1028: my $currentstring = '';
1029: if ($target eq 'web') {
1030: $currentstring .= $token->[4];
1031: } elsif ($target eq 'tex') {
1032: $currentstring .= '\texttt{';
1033: }
1034: return $currentstring;
1035: }
1036:
1037: sub end_kbd {
1038: my ($target,$token) = @_;
1039: my $currentstring = '';
1040: if ($target eq 'web') {
1041: $currentstring .= $token->[2];
1042: } elsif ($target eq 'tex') {
1043: $currentstring .= '}';
1044: }
1045: return $currentstring;
1046: }
1047:
1048: #-- <code> tag (end tag required)
1049: sub start_code {
1050: my ($target,$token) = @_;
1051: my $currentstring = '';
1052: if ($target eq 'web') {
1053: $currentstring .= $token->[4];
1054: } elsif ($target eq 'tex') {
1055: $currentstring .= '\texttt{';
1056: }
1057: return $currentstring;
1058: }
1059:
1060: sub end_code {
1061: my ($target,$token) = @_;
1062: my $currentstring = '';
1063: if ($target eq 'web') {
1064: $currentstring .= $token->[2];
1065: } elsif ($target eq 'tex') {
1066: $currentstring .= '}';
1067: }
1068: return $currentstring;
1069: }
1070:
1071: #-- <em> tag (end tag required)
1072: sub start_em {
1073: my ($target,$token) = @_;
1074: my $currentstring = '';
1075: if ($target eq 'web') {
1076: $currentstring .= $token->[4];
1077: } elsif ($target eq 'tex') {
1078: $currentstring .= '\emph{';
1079: }
1080: return $currentstring;
1081: }
1082:
1083: sub end_em {
1084: my ($target,$token) = @_;
1085: my $currentstring = '';
1086: if ($target eq 'web') {
1087: $currentstring .= $token->[2];
1088: } elsif ($target eq 'tex') {
1089: $currentstring .= '}';
1090: }
1091: return $currentstring;
1092: }
1093:
1094: #-- <q> tag (end tag required)
1095: sub start_q {
1096: my ($target,$token) = @_;
1097: my $currentstring = '';
1098: if ($target eq 'web') {
1099: $currentstring .= $token->[4];
1100: } elsif ($target eq 'tex') {
1101: $currentstring .= '\emph{';
1102: }
1103: return $currentstring;
1104: }
1105:
1106: sub end_q {
1107: my ($target,$token) = @_;
1108: my $currentstring = '';
1109: if ($target eq 'web') {
1110: $currentstring .= $token->[2];
1111: } elsif ($target eq 'tex') {
1112: $currentstring .= '}';
1113: }
1114: return $currentstring;
1115: }
1116:
1117: #-- <p> tag (end tag optional)
1118: #optional attribute - align="center|left|right"
1119: sub start_p {
1120: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1121: my $currentstring = '';
1122: if ($target eq 'web') {
1123: $currentstring .= $token->[4];
1124: } elsif ($target eq 'tex') {
1125: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1126: if ($align eq 'center') {
1127: $currentstring='\begin{center}\par';
1128: } elsif ($align eq 'right') {
1129: $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
1130: } elsif ($align eq 'left') {
1131: $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
1132: } else {
1133: $currentstring='\par ';
1134: }
1135: my $signal=1;#<p> does not work inside <b>...</b>
1136: foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
1137: if (!$signal) {$currentstring = '';}
1138: }
1139: }
1140: return $currentstring;
1141: }
1142:
1143: sub end_p {
1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web') {
1147: $currentstring .= $token->[2];
1148: } elsif ($target eq 'tex') {
1149: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1150: if (not defined $align) {
1151: $currentstring.='\strut\\\\\strut ';
1152: } elsif ($align eq 'center') {
1153: $currentstring .= '\end{center}';
1154: } elsif ($align eq 'right') {
1155: $currentstring .= '}}';
1156: } elsif ($align eq 'left') {
1157: $currentstring .= '}\hfill}';
1158: }
1159: }
1160: return $currentstring;
1161: }
1162:
1163: #-- <br> tag (end tag forbidden)
1164: sub start_br {
1165: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1166: my $currentstring = '';
1167: if ($target eq 'web') {
1168: $currentstring .= $token->[4];
1169: } elsif ($target eq 'tex') {
1170: my @tempo=@$tagstack;
1171: my $signal=0;
1172: for (my $i=$#tempo;$i>=0;$i--) {
1173: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1174: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1175: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1176: $signal=1;
1177: last;
1178: }
1179: }
1180: if ($signal) {
1181: $currentstring .= ' \vskip 0 mm ';
1182: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1183: $currentstring .= '\strut \\\\ \strut ';
1184: }
1185: }
1186: return $currentstring;
1187: }
1188:
1189: sub end_br {
1190: my ($target,$token) = @_;
1191: my $currentstring = '';
1192: if ($target eq 'web') {
1193: $currentstring .= $token->[2];
1194: }
1195: return $currentstring;
1196: }
1197:
1198: #-- <big> tag (end tag required)
1199: sub start_big {
1200: my ($target,$token) = @_;
1201: my $currentstring = '';
1202: if ($target eq 'web') {
1203: $currentstring .= $token->[4];
1204: } elsif ($target eq 'tex') {
1205: $currentstring .= '{\large ';
1206: }
1207: return $currentstring;
1208: }
1209:
1210: sub end_big {
1211: my ($target,$token) = @_;
1212: my $currentstring = '';
1213: if ($target eq 'web') {
1214: $currentstring .= $token->[2];
1215: } elsif ($target eq 'tex') {
1216: $currentstring .= '}';
1217: }
1218: return $currentstring;
1219: }
1220:
1221: #-- <small> tag (end tag required)
1222: sub start_small {
1223: my ($target,$token) = @_;
1224: my $currentstring = '';
1225: if ($target eq 'web') {
1226: $currentstring .= $token->[4];
1227: } elsif ($target eq 'tex') {
1228: $currentstring .= '{\footnotesize ';
1229: }
1230: return $currentstring;
1231: }
1232:
1233: sub end_small {
1234: my ($target,$token) = @_;
1235: my $currentstring = '';
1236: if ($target eq 'web') {
1237: $currentstring .= $token->[2];
1238: } elsif ($target eq 'tex') {
1239: $currentstring .= '}';
1240: }
1241: return $currentstring;
1242: }
1243:
1244: #-- <basefont> tag (end tag forbidden)
1245: sub start_basefont {
1246: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1247: my $currentstring = '';
1248: if ($target eq 'web') {
1249: $currentstring = $token->[4];
1250: } elsif ($target eq 'tex') {
1251: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1252: if (defined $basesize) {
1253: $currentstring = '{\\'.$basesize.' ';
1254: }
1255: }
1256: return $currentstring;
1257: }
1258:
1259: sub end_basefont {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1261: my $currentstring = '';
1262: if ($target eq 'web') {
1263: $currentstring = $token->[4];
1264: } elsif ($target eq 'tex') {
1265: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1266: if (defined $basesize) {
1267: $currentstring = '}';
1268: }
1269: }
1270: return $currentstring;
1271: }
1272:
1273: #-- <font> tag (end tag required)
1274: sub start_font {
1275: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1276: my $currentstring = '';
1277: if ($target eq 'web') {
1278: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1279: if ($face!~/symbol/i) {
1280: if (($ENV{'browser.fontenhance'} eq 'on') ||
1281: ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
1282: }
1283: $currentstring = $token->[4];
1284: } elsif ($target eq 'tex') {
1285: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1286: if (defined $fontsize) {
1287: $currentstring = '{\\'.$fontsize.' ';
1288: }
1289: }
1290: return $currentstring;
1291: }
1292:
1293: sub end_font {
1294: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1295: my $currentstring = '';
1296: if ($target eq 'web') {
1297: $currentstring = $token->[2];
1298: } elsif ($target eq 'tex') {
1299: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1300: if (defined $fontsize) {
1301: $currentstring = '}';
1302: }
1303: }
1304: return $currentstring;
1305: }
1306:
1307: #-- <strike> tag (end tag required)
1308: sub start_strike {
1309: my ($target,$token) = @_;
1310: my $currentstring = '';
1311: if ($target eq 'web') {
1312: $currentstring .= $token->[4];
1313: } elsif ($target eq 'tex') {
1314: &Apache::lonxml::startredirection();
1315: }
1316: return $currentstring;
1317: }
1318:
1319: sub end_strike {
1320: my ($target,$token) = @_;
1321: my $currentstring = '';
1322: if ($target eq 'web') {
1323: $currentstring .= $token->[2];
1324: } elsif ($target eq 'tex') {
1325: $currentstring=&Apache::lonxml::endredirection();
1326: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1327: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1328: $currentstring=~s/(\S)\s*$/$1\}/;
1329: }
1330: return $currentstring;
1331: }
1332:
1333: #-- <s> tag (end tag required)
1334: sub start_s {
1335: my ($target,$token) = @_;
1336: my $currentstring = '';
1337: if ($target eq 'web') {
1338: $currentstring .= $token->[4];
1339: } elsif ($target eq 'tex') {
1340: &Apache::lonxml::startredirection();
1341: }
1342: return $currentstring;
1343: }
1344:
1345: sub end_s {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web') {
1349: $currentstring .= $token->[2];
1350: } elsif ($target eq 'tex') {
1351: $currentstring=&Apache::lonxml::endredirection();
1352: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1353: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1354: $currentstring=~s/(\S)\s*$/$1\}/;
1355: }
1356: return $currentstring;
1357: }
1358:
1359: #-- <sub> tag (end tag required)
1360: sub start_sub {
1361: my ($target,$token) = @_;
1362: my $currentstring = '';
1363: if ($target eq 'web') {
1364: $currentstring .= $token->[4];
1365: } elsif ($target eq 'tex') {
1366: $currentstring .= '\ensuremath{_{';
1367: }
1368: return $currentstring;
1369: }
1370:
1371: sub end_sub {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web') {
1375: $currentstring .= $token->[2];
1376: } elsif ($target eq 'tex') {
1377: $currentstring .= '}}';
1378: }
1379: return $currentstring;
1380: }
1381:
1382: #-- <sup> tag (end tag required)
1383: sub start_sup {
1384: my ($target,$token) = @_;
1385: my $currentstring = '';
1386: if ($target eq 'web') {
1387: $currentstring .= $token->[4];
1388: } elsif ($target eq 'tex') {
1389: $currentstring .= '\ensuremath{^{';
1390: }
1391: return $currentstring;
1392: }
1393:
1394: sub end_sup {
1395: my ($target,$token) = @_;
1396: my $currentstring = '';
1397: if ($target eq 'web') {
1398: $currentstring .= $token->[2];
1399: } elsif ($target eq 'tex') {
1400: $currentstring .= '}}';
1401: }
1402: return $currentstring;
1403: }
1404:
1405: #-- <hr> tag (end tag forbidden)
1406: sub start_hr {
1407: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1408: my $currentstring = '';
1409: if ($target eq 'web') {
1410: $currentstring .= $token->[4];
1411: } elsif ($target eq 'tex') {
1412: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1413: if (defined $LaTeXwidth) {
1414: if ($LaTeXwidth=~/^%/) {
1415: substr($LaTeXwidth,0,1)='';
1416: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1417: }
1418: } else {
1419: $LaTeXwidth ='0.9\textwidth';
1420: }
1421: my ($pre,$post);
1422: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1423: if (($align eq 'center') || (not defined $align)) {
1424: $pre=''; $post='';
1425: } elsif ($align eq 'left') {
1426: $pre='\rlap{'; $post='} \hfill';
1427: } elsif ($align eq 'right') {
1428: $pre=' \hfill \llap{'; $post='}';
1429: }
1430: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1431: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1432: }
1433: return $currentstring;
1434: }
1435:
1436: sub end_hr {
1437: my ($target,$token) = @_;
1438: my $currentstring = '';
1439: if ($target eq 'web') {
1440: $currentstring .= $token->[2];
1441: }
1442: return $currentstring;
1443: }
1444:
1445: #-- <div> tag (end tag required)
1446: sub start_div {
1447: my ($target,$token) = @_;
1448: my $currentstring = '';
1449: if ($target eq 'web') {
1450: $currentstring .= $token->[4];
1451: }
1452: return $currentstring;
1453: }
1454:
1455: sub end_div {
1456: my ($target,$token) = @_;
1457: my $currentstring = '';
1458: if ($target eq 'web') {
1459: $currentstring .= $token->[2];
1460: }
1461: return $currentstring;
1462: }
1463:
1464: #-- <a> tag (end tag required)
1465: sub start_a {
1466: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1467: my $currentstring = '';
1468: if ($target eq 'web') {
1469: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1470: undef,1);
1471: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1472: } elsif ($target eq 'tex') {
1473: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1474: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1475: if ($a=~/\S/) {
1476: $a=~s/([^\\])%/$1\\\%/g;
1477: $currentstring .= '\ref{URI: '.$a.'}';
1478: } elsif ($b=~/\S/) {
1479: $currentstring .= '\ref{Anchor: '.$b.'}';
1480: } else {
1481: $currentstring.='';
1482: }
1483: }
1484: return $currentstring;
1485: }
1486:
1487: sub end_a {
1488: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1489: my $currentstring = '';
1490: if ($target eq 'web') {
1491: $currentstring .= $token->[2];
1492: }
1493: return $currentstring;
1494: }
1495:
1496: #-- <li> tag (end tag optional)
1497: sub start_li {
1498: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1499: my $currentstring = '';
1500: if ($target eq 'web') {
1501: $currentstring = $token->[4];
1502: } elsif ($target eq 'tex') {
1503: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1504: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1505: #FIXME need to support types i and I
1506: if ($type=~/disc/) {
1507: $currentstring .= ' \item[$\bullet$] ';
1508: } elsif ($type=~/circle/) {
1509: $currentstring .= ' \item[$\circ$] ';
1510: } elsif ($type=~/square/) {
1511: $currentstring .= ' \item[$\diamond$] ';
1512: } elsif ($type eq '1') {
1513: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1514: } elsif ($type eq 'A') {
1515: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1516: } elsif ($type eq 'a') {
1517: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1518: } elsif ($value ne '') {
1519: $currentstring .= ' \item['.$value.'] ';
1520: } else {
1521: $currentstring .= ' \item ';
1522: }
1523: $Apache::londefdef::list_index++;
1524: }
1525: return $currentstring;
1526: }
1527:
1528: sub end_li {
1529: my ($target,$token) = @_;
1530: my $currentstring = '';
1531: if ($target eq 'web') {
1532: $currentstring = $token->[2];
1533: }
1534: return $currentstring;
1535: }
1536:
1537: #-- <u> tag (end tag required)
1538: sub start_u {
1539: my ($target,$token) = @_;
1540: my $currentstring = '';
1541: if ($target eq 'web') {
1542: $currentstring .= $token->[4];
1543: } elsif ($target eq 'tex') {
1544: &Apache::lonxml::startredirection();
1545: }
1546: return $currentstring;
1547: }
1548:
1549: sub end_u {
1550: my ($target,$token) = @_;
1551: my $currentstring = '';
1552: if ($target eq 'web') {
1553: $currentstring .= $token->[2];
1554: } elsif ($target eq 'tex') {
1555: $currentstring=&Apache::lonxml::endredirection();
1556: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1557: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1558: $currentstring=~s/(\S)\s*$/$1\}/;
1559: }
1560: return $currentstring;
1561: }
1562:
1563: #-- <ul> tag (end tag required)
1564: sub start_ul {
1565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1566: my $currentstring = '';
1567: if ($target eq 'web') {
1568: $currentstring = $token->[4];
1569: } elsif ($target eq 'tex') {
1570: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1571: $Apache::londefdef::list_index=0;
1572: if ($TeXtype eq 'disc') {
1573: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1574: '\renewcommand{\labelitemii}{$\bullet$}'.
1575: '\renewcommand{\labelitemiii}{$\bullet$}'.
1576: '\renewcommand{\labelitemiv}{$\bullet$}';
1577: } elsif ($TeXtype eq 'circle') {
1578: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1579: '\renewcommand{\labelitemii}{$\circ$}'.
1580: '\renewcommand{\labelitemiii}{$\circ$}'.
1581: '\renewcommand{\labelitemiv}{$\circ$}';
1582: } elsif ($TeXtype eq 'square') {
1583: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1584: '\renewcommand{\labelitemii}{$\diamond$}'.
1585: '\renewcommand{\labelitemiii}{$\diamond$}'.
1586: '\renewcommand{\labelitemiv}{$\diamond$}';
1587: }
1588: $currentstring .= '\strut \begin{itemize}';
1589: }
1590: return $currentstring;
1591: }
1592:
1593: sub end_ul {
1594: my ($target,$token) = @_;
1595: my $currentstring = '';
1596: if ($target eq 'web') {
1597: $currentstring = $token->[2];
1598: } elsif ($target eq 'tex') {
1599: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1600: '\renewcommand{\labelitemii}{$\bullet$}'.
1601: '\renewcommand{\labelitemiii}{$\bullet$}'.
1602: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1603: }
1604: return $currentstring;
1605: }
1606:
1607: #-- <menu> tag (end tag required)
1608: sub start_menu {
1609: my ($target,$token) = @_;
1610: my $currentstring = '';
1611: if ($target eq 'web') {
1612: $currentstring = $token->[4];
1613: } elsif ($target eq 'tex') {
1614: $currentstring = " \\begin{itemize} ";
1615: }
1616: return $currentstring;
1617: }
1618:
1619: sub end_menu {
1620: my ($target,$token) = @_;
1621: my $currentstring = '';
1622: if ($target eq 'web') {
1623: $currentstring = $token->[2];
1624: } elsif ($target eq 'tex') {
1625: $currentstring = " \\end{itemize}";
1626: }
1627: return $currentstring;
1628: }
1629:
1630: #-- <dir> tag (end tag required)
1631: sub start_dir {
1632: my ($target,$token) = @_;
1633: my $currentstring = '';
1634: if ($target eq 'web') {
1635: $currentstring = $token->[4];
1636: } elsif ($target eq 'tex') {
1637: $currentstring = " \\begin{itemize} ";
1638: }
1639: return $currentstring;
1640: }
1641:
1642: sub end_dir {
1643: my ($target,$token) = @_;
1644: my $currentstring = '';
1645: if ($target eq 'web') {
1646: $currentstring = $token->[2];
1647: } elsif ($target eq 'tex') {
1648: $currentstring = " \\end{itemize}";
1649: }
1650: return $currentstring;
1651: }
1652:
1653: #-- <ol> tag (end tag required)
1654: sub start_ol {
1655: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1656: my $currentstring = '';
1657: if ($target eq 'web') {
1658: $currentstring = $token->[4];
1659: } elsif ($target eq 'tex') {
1660: $Apache::londefdef::list_index=0;
1661: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1662: if ($type eq '1') {
1663: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1664: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1665: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1666: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1667: } elsif ($type eq 'A') {
1668: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1669: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1670: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1671: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1672: } elsif ($type eq 'a') {
1673: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1674: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1675: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1676: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1677: } elsif ($type eq 'i') {
1678: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1679: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1680: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1681: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1682: } elsif ($type eq 'I') {
1683: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1684: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1685: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1686: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1687: }
1688: $currentstring .= '\strut \begin{enumerate}';
1689: }
1690: return $currentstring;
1691: }
1692:
1693: sub end_ol {
1694: my ($target,$token) = @_;
1695: my $currentstring = '';
1696: if ($target eq 'web') {
1697: $currentstring = $token->[2];
1698: } elsif ($target eq 'tex') {
1699: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1700: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1701: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1702: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1703: }
1704: return $currentstring;
1705: }
1706:
1707: #-- <dl> tag (end tag required)
1708: sub start_dl {
1709: my ($target,$token) = @_;
1710: my $currentstring = '';
1711: if ($target eq 'web') {
1712: $currentstring = $token->[4];
1713: } elsif ($target eq 'tex') {
1714: $currentstring = '\begin{description}';
1715: $Apache::londefdef::DL++;
1716: push(@Apache::londefdef::description,[]);
1717: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1718: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1719: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1720: }
1721: return $currentstring;
1722: }
1723:
1724: sub end_dl {
1725: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1726: my $currentstring = '';
1727: if ($target eq 'web') {
1728: $currentstring = $token->[2];
1729: } elsif ($target eq 'tex') {
1730: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1731: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1732: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1733: $currentstring.=' '.$element.' ';
1734: }
1735: pop(@Apache::londefdef::description);
1736: $currentstring.='\end{description}';
1737: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1738: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1739: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1740: $Apache::londefdef::DL--;
1741: }
1742: return $currentstring;
1743: }
1744:
1745: #-- <dt> tag (end tag optional)
1746: sub start_dt {
1747: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1748: my $currentstring='';
1749: if ($target eq 'web') {
1750: $currentstring = $token->[4];
1751: } elsif ($target eq 'tex') {
1752: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1753: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1754: &Apache::lonxml::startredirection();
1755: $Apache::londefdef::DT[-1]++;
1756: $Apache::londefdef::seenDT[-1]=1;
1757: }
1758: return $currentstring;
1759: }
1760:
1761: sub end_dt {
1762: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1763: my $currentstring = '';
1764: if ($target eq 'web') {
1765: $currentstring = $token->[2];
1766: } elsif ($target eq 'tex') {
1767: if ($Apache::londefdef::DT[-1]) {
1768: my $data=&item_cleanup();
1769: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1770: $Apache::londefdef::DT[-1]--;
1771: }
1772: }
1773: return $currentstring;
1774: }
1775:
1776: sub item_cleanup {
1777: my $item=&Apache::lonxml::endredirection();
1778: $item=~s/\\begin{center}//g;
1779: $item=~s/\\end{center}//g;
1780: return $item;
1781: }
1782:
1783: #-- <dd> tag (end tag optional)
1784: sub start_dd {
1785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1786: my $currentstring = '';
1787: if ($target eq 'web') {
1788: $currentstring = $token->[4];
1789: } elsif ($target eq 'tex') {
1790: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1791: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1792: if (!$Apache::londefdef::seenDT[-1]) {
1793: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1794: }
1795: push(@{$Apache::londefdef::description[-1]},'');
1796: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1797: $Apache::londefdef::DD[-1]++;
1798: &Apache::lonxml::startredirection();
1799: }
1800: return $currentstring;
1801: }
1802:
1803: sub end_dd {
1804: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1805: my $currentstring = '';
1806: if ($target eq 'web') {
1807: $currentstring = $token->[2];
1808: } elsif ($target eq 'tex') {
1809: $Apache::londefdef::description[-1]->[-1].=
1810: &Apache::lonxml::endredirection().' \vskip 0mm ';
1811: $Apache::londefdef::DD[-1]--;
1812: }
1813: return $currentstring;
1814: }
1815:
1816: #-- <table> tag (end tag required)
1817: #list of supported attributes: border,width,TeXwidth
1818: sub start_table {
1819: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1820: my ($textwidth,$currentstring)=('','');
1821: if ($target eq 'web') {
1822: $currentstring = $token->[4];
1823: } elsif ($target eq 'tex') {
1824: my $aa = {};
1825: push @Apache::londefdef::table, $aa;
1826: $Apache::londefdef::table[-1]{'row_number'} = -1;
1827: #maximum table's width (default coincides with text line length)
1828: if ($#Apache::londefdef::table==0) {
1829: $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
1830: $textwidth=~/(\d+\.?\d*)/;
1831: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1832: } else {
1833: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1834: #the maximum width of nested table is determined by LATeX width of parent cell
1835: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1836: } else {
1837: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1838: $textwidth=$Apache::londefdef::table[-2]{'width'};
1839: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1840: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1841: }
1842: }
1843: }
1844: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1845: if (not defined $TeXwidth) {
1846: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1847: if ($htmlwidth=~/%/) {
1848: $Apache::londefdef::table[-1]{'percent'}=1;
1849: $htmlwidth=~/(\d+)/;
1850: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1851: } else {
1852: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1853: }
1854: } elsif ($TeXwidth=~/%/) {
1855: $Apache::londefdef::table[-1]{'percent'}=1;
1856: $TeXwidth=~/(\d+)/;
1857: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1858: } else {
1859: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1860: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1861: }
1862: #table's border
1863: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1864: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1865: unless (defined $border) { $border = 0; }
1866: if ($border) {
1867: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1868: $Apache::londefdef::table[-1]{'vinc'} = '&';
1869: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1870: } else {
1871: $Apache::londefdef::table[-1]{'hinc'} = '';
1872: $Apache::londefdef::table[-1]{'vinc'} = '&';
1873: $Apache::londefdef::table[-1]{'vvinc'} = '';
1874: }
1875: if ($#Apache::londefdef::table==0) {
1876: $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1877: }
1878: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1879: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1880: $Apache::londefdef::table[-1]{'objectlen'}=[];
1881: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1882: $Apache::londefdef::table[-1]{'maxlen'}=[];
1883: $Apache::londefdef::table[-1]{'minlen'}=[];
1884: $Apache::londefdef::table[-1]{'content'}=[];
1885: $Apache::londefdef::table[-1]{'align'}=[];
1886: $currentstring='\keephidden{NEW TABLE ENTRY}';
1887: }
1888: return $currentstring;
1889: }
1890:
1891: sub end_table {
1892: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1893: my $currentstring = '';
1894: if ($target eq 'web') {
1895: $currentstring = $token->[2];
1896: } elsif ($target eq 'tex') {
1897: my $inmemory = '';
1898: my $output = '';
1899: my $WARNING='';
1900: #width of columns from TeXwidth attributes
1901: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1902: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1903: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1904: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1905: }
1906: }
1907: }
1908: #free space and number of empty columns
1909: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1910: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1911: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1912: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1913: $empty_columns++;
1914: } else {
1915: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1916: }
1917: }
1918: #boundaries for contents columns
1919: my @min_len=();#columns can not be narrower
1920: my @max_len=();#maximum length of column
1921: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1922: my ($localmin,$localmax)=(0,0);
1923: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1924: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
1925: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
1926: }
1927: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
1928: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
1929: }
1930: }
1931: push @min_len, $localmin;
1932: push @max_len, $localmax;
1933: }
1934: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1935: my $localmin=0,;
1936: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1937: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
1938: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
1939: }
1940: }
1941: if ($max_len[$jn]<$localmin) {
1942: $max_len[$jn]=$localmin;
1943: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1944: }#object size is bigger
1945: if ($min_len[$jn]<$localmin) {
1946: $min_len[$jn]=$localmin;
1947: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
1948: }#object size is bigger
1949: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
1950: $min_len[$jn]=0;
1951: $max_len[$jn]=0;
1952: }
1953: }
1954: #final adjustment of column width
1955: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
1956: my @adjust=();
1957: #step 1. adjustment by maximum value
1958: my $space_neeeded=0;
1959: for (my $jn=0;$jn<=$#max_len;$jn++) {
1960: $space_neeeded=$space_neeeded+$max_len[$jn];
1961: }
1962: if ($space_neeeded<=$available_space) {
1963: for (my $jn=0;$jn<=$#max_len;$jn++) {
1964: if ($fwidth[$jn]==0) {
1965: $fwidth[$jn]=$max_len[$jn];
1966: }
1967: }
1968: } else {
1969: #step 2. adjustment by minimum value (estimation)
1970: $space_neeeded=0;
1971: for (my $jn=0;$jn<=$#min_len;$jn++) {
1972: $space_neeeded+=$min_len[$jn];
1973: }
1974: if ($space_neeeded>$available_space) {
1975: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
1976: for (my $jn=0;$jn<=$#max_len;$jn++) {
1977: if ($fwidth[$jn]==0) {
1978: $fwidth[$jn]=$min_len[$jn];
1979: }
1980: }
1981: #check if we have objects which can be scaled
1982: my $how_many_to_scale=0;
1983: my @to_scale=();
1984: for (my $jn=0;$jn<=$#max_len;$jn++) {
1985: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
1986: $how_many_to_scale++;
1987: push @to_scale, $jn;
1988: }
1989: }
1990: if ($how_many_to_scale>0) {
1991: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
1992: foreach my $jn (@to_scale) {
1993: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1994: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
1995: if ($1 ne '') {
1996: my $current_length=&recalc($1);
1997: $current_length=~/(\d+\.?\d*)/;
1998: $current_length=$current_length-$space_to_adjust;
1999: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2000: }
2001: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2002: if ($1 ne '') {
2003: my $current_length=$1;
2004: $current_length=$current_length-$space_to_adjust;
2005: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2006: }
2007: }
2008: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2009: }
2010: }
2011: } else {
2012: #step 3. adjustment over minimal + corrections
2013: my $enlarge_coef=$available_space/$space_neeeded;
2014: my $acsessive=0;
2015: for (my $jn=0;$jn<=$#min_len;$jn++) {
2016: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2017: if ($adjust[$jn]>$max_len[$jn]) {
2018: $fwidth[$jn]=$max_len[$jn];
2019: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2020: $adjust[$jn]=0;
2021: }
2022: }
2023: if ($acsessive>0) {
2024: #we have an excess of space and can redistribute it
2025: my $notempty_columns=0;
2026: for (my $jn=0;$jn<=$#min_len;$jn++) {
2027: if ($adjust[$jn]!=0) {
2028: $notempty_columns++;
2029: }
2030: }
2031: my $per_column=$acsessive/$notempty_columns;
2032: for (my $jn=0;$jn<=$#min_len;$jn++) {
2033: if ($adjust[$jn]!=0) {
2034: $adjust[$jn]+=$per_column;
2035: $fwidth[$jn]=$adjust[$jn];
2036: }
2037: }
2038: } else {
2039: for (my $jn=0;$jn<=$#min_len;$jn++) {
2040: $fwidth[$jn]=$adjust[$jn];
2041: }
2042: }
2043: }
2044: }
2045: #use all available width if it is defined in % or as TeXwidth
2046: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2047: my $current=0;
2048: for (my $i=0;$i<=$#fwidth;$i++) {
2049: $current+=$fwidth[$i];
2050: }
2051: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2052: for (my $i=0;$i<=$#fwidth;$i++) {
2053: $fwidth[$i]*=$coef;
2054: }
2055: }
2056: #removing of empty columns if allowed
2057: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2058: if ($permission eq 'yes') {
2059: my @cleaned_table=();
2060: my @cleaned_header=();
2061: my $colind=0;
2062: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2063: if ($fwidth[$jn]!=0) {
2064: #we need to copy column
2065: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2066: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2067: $cleaned_header[$colind]=$fwidth[$jn];
2068: }
2069: $colind++;
2070: }
2071: }
2072: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2073: @fwidth=@cleaned_header;
2074: }
2075: #construct header of the table
2076: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2077: for (my $in=0;$in<=$#fwidth;$in++) {
2078: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2079: }
2080: $header_of_table .= '}';
2081: #fill the table
2082: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2083: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2084: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2085: $output.='\vspace*{-6 mm}\begin{center}';
2086: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2087: $output.=' \hfill \llap{'
2088: }
2089: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2090: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2091: $output.='\end{center}\vspace*{-6 mm}';
2092: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2093: $output.='} ';
2094: }
2095: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2096: }
2097: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2098: }
2099: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2100: if ($#Apache::londefdef::table > 0) {
2101: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2102: pop @Apache::londefdef::table;
2103: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2104: } else {
2105: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2106: pop @Apache::londefdef::table;
2107: undef @Apache::londefdef::table;
2108: }
2109: }
2110: return $currentstring;
2111: }
2112:
2113: #-- <tr> tag (end tag optional)
2114: sub start_tr {
2115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2116: my $currentstring = '';
2117: if ($target eq 'web') {
2118: $currentstring = $token->[4];
2119: } elsif ($target eq 'tex') {
2120: $Apache::londefdef::table[-1]{'row_number'}++;
2121: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2122: if ($alignchar ne '') {
2123: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2124: } else {
2125: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2126: }
2127: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2128: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2129: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2130: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2131: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2132: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2133: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2134: }
2135: return $currentstring;
2136: }
2137:
2138: sub end_tr {
2139: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2140: my $currentstring = '';
2141: if ($target eq 'web') {
2142: $currentstring = $token->[2];
2143: } elsif ($target eq 'tex') {
2144: if ($Apache::londefdef::TD_redirection) {
2145: &end_td_tex($parstack,$parser,$safeeval);
2146: }
2147: }
2148: return $currentstring;
2149: }
2150:
2151: #-- <td> tag (end tag optional)
2152: sub start_td {
2153: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2154: my $currentstring = '';
2155: if ($target eq 'web') {
2156: $currentstring = $token->[4];
2157: } elsif ($target eq 'tex') {
2158: $Apache::londefdef::TD_redirection = 1;
2159: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2160: }
2161: return $currentstring;
2162: }
2163:
2164: sub tag_check {
2165: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2166: my @ar=@$parstack;
2167: for (my $i=$#ar-1;$i>=0;$i--) {
2168: if (lc($$tagstack[$i]) eq $good_tag) {
2169: &start_td_tex($parstack,$parser,$safeeval);
2170: last;
2171: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2172: splice @ar, $i+1;
2173: &end_td_tex(\@ar,$parser,$safeeval);
2174: &start_td_tex($parstack,$parser,$safeeval);
2175: last;
2176: }
2177: }
2178: return '';
2179: }
2180:
2181: sub start_td_tex {
2182: my ($parstack,$parser,$safeeval) = @_;
2183: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2184: if ($alignchar eq '') {
2185: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2186: }
2187: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2188: $Apache::londefdef::table[-1]{'counter_columns'}++;
2189: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2190: if (defined $TeXwidth) {
2191: my $current_length=&recalc($TeXwidth);
2192: $current_length=~/(\d+\.?\d*)/;
2193: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2194: }
2195: &Apache::lonxml::startredirection();
2196: return '';
2197: }
2198:
2199: sub end_td_tex {
2200: my ($parstack,$parser,$safeeval) = @_;
2201: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2202: my $data=&Apache::lonxml::endredirection();
2203: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2204: if (defined $TeXwidth) {
2205: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2206: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2207: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2208: } else {
2209: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2210: my $garbage_data=$data;
2211: my $fwidth=0;
2212: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2213: my $current_length=&recalc($1);
2214: $current_length=~/(\d+\.?\d*)/;
2215: if ($fwidth<$1) {$fwidth=$1;}
2216: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2217: }
2218: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2219: my $current_length=$1;
2220: if ($fwidth<$current_length) {$fwidth=$current_length;}
2221: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2222: }
2223: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2224: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2225: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2226: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2227: } elsif ($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)*/) {
2228: my $garbage_data=$data;
2229: my $fwidth=0;
2230: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2231: my $current_length=&recalc($1);
2232: $current_length=~/(\d+\.?\d*)/;
2233: if ($fwidth<$1) {$fwidth=$1;}
2234: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2235: }
2236: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2237: my $current_length=&recalc($1);
2238: $current_length=~/(\d+\.?\d*)/;
2239: if ($fwidth<$1) {$fwidth=$1;}
2240: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2241: }
2242: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2243: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2244: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2245: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2246: $data=~s/\\\\\s*$//;
2247: } else {
2248: $data=~s/^\s+(\S.*)/$1/;
2249: $data=~s/(.*\S)\s+$/$1/;
2250: $data=~s/(\s)+/$1/;
2251: my ($current_length,$min_length)=(0,0);
2252: if ($data=~/\\vskip/) {
2253: my $newdata=$data;
2254: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2255: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2256: foreach my $elementdata (@newdata) {
2257: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2258: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2259: my @words=split(/ /,$elementdata);
2260: foreach my $word (@words) {
2261: my $lengthword=2.5*&LATEX_length($word);
2262: if ($min_length<$lengthword) {$min_length=$lengthword;}
2263: }
2264: }
2265: } else {
2266: $current_length=2.5*&LATEX_length($data);
2267: my @words=split(/ /,$data);
2268: foreach my $word (@words) {
2269: my $lengthword=2*&LATEX_length($word);
2270: if ($min_length<$lengthword) {$min_length=$lengthword;}
2271: }
2272: }
2273: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2274: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2275: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2276: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2277: }
2278: }
2279: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2280: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2281: }
2282: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2283: return'';
2284: }
2285:
2286: sub end_td {
2287: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2288: my $currentstring = '';
2289: if ($target eq 'web') {
2290: $currentstring = $token->[2];
2291: } elsif ($target eq 'tex') {
2292: $Apache::londefdef::TD_redirection =0;
2293: &end_td_tex($parstack,$parser,$safeeval);
2294: }
2295: return $currentstring;
2296: }
2297:
2298: #-- <th> tag (end tag optional)
2299: sub start_th {
2300: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2301: my $currentstring = '';
2302: if ($target eq 'web') {
2303: $currentstring = $token->[4];
2304: } elsif ($target eq 'tex') {
2305: $Apache::londefdef::TD_redirection = 1;
2306: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2307: }
2308: return $currentstring;
2309: }
2310:
2311: sub tagg_check {
2312: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2313: my @ar=@$parstack;
2314: for (my $i=$#ar-1;$i>=0;$i--) {
2315: if (lc($$tagstack[$i]) eq $good_tag) {
2316: &start_th_tex($parstack,$parser,$safeeval);
2317: last;
2318: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2319: splice @ar, $i+1;
2320: &end_th_tex(\@ar,$parser,$safeeval);
2321: &start_th_tex($parstack,$parser,$safeeval);
2322: last;
2323: }
2324: }
2325: return '';
2326: }
2327:
2328: sub start_th_tex {
2329: my ($parstack,$parser,$safeeval) = @_;
2330: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2331: if ($alignchar eq '') {
2332: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2333: }
2334: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2335: $Apache::londefdef::table[-1]{'counter_columns'}++;
2336: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2337: if (defined $TeXwidth) {
2338: my $current_length=&recalc($TeXwidth);
2339: $current_length=~/(\d+\.?\d*)/;
2340: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2341: }
2342: &Apache::lonxml::startredirection();
2343: return '';
2344: }
2345:
2346: sub end_th_tex {
2347: my ($parstack,$parser,$safeeval) = @_;
2348: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2349: my $data=&Apache::lonxml::endredirection();
2350: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2351: if (defined $TeXwidth) {
2352: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2353: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2354: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2355: } else {
2356: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2357: my $garbage_data=$data;
2358: my $fwidth=0;
2359: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2360: my $current_length=&recalc($1);
2361: $current_length=~/(\d+\.?\d*)/;
2362: if ($fwidth<$1) {$fwidth=$1;}
2363: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2364: }
2365: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2366: my $current_length=$1;
2367: if ($fwidth<$current_length) {$fwidth=$current_length;}
2368: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2369: }
2370: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2371: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2372: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2373: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2374: } else {
2375: $data=~s/^\s+(\S.*)/$1/;
2376: $data=~s/(.*\S)\s+$/$1/;
2377: $data=~s/(\s)+/$1/;
2378: my ($current_length,$min_length)=(0,0);
2379: if ($data=~/\\vskip/) {
2380: my $newdata=$data;
2381: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2382: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2383: foreach my $elementdata (@newdata) {
2384: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2385: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2386: my @words=split(/ /,$elementdata);
2387: foreach my $word (@words) {
2388: my $lengthword=2.5*&LATEX_length($word);
2389: if ($min_length<$lengthword) {$min_length=$lengthword;}
2390: }
2391: }
2392: } else {
2393: $current_length=2.5*&LATEX_length($data);
2394: my @words=split(/ /,$data);
2395: foreach my $word (@words) {
2396: my $lengthword=2*&LATEX_length($word);
2397: if ($min_length<$lengthword) {$min_length=$lengthword;}
2398: }
2399: }
2400: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2401: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2402: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2403: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2404: }
2405: }
2406: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2407: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2408: }
2409: #make data bold
2410: $data='\textbf{'.$data.'}';
2411: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2412: return'';
2413: }
2414:
2415: sub end_th {
2416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2417: my $currentstring = '';
2418: if ($target eq 'web') {
2419: $currentstring = $token->[2];
2420: } elsif ($target eq 'tex') {
2421: $Apache::londefdef::TD_redirection =0;
2422: &end_th_tex($parstack,$parser,$safeeval);
2423: }
2424: return $currentstring;
2425: }
2426:
2427: #-- <img> tag (end tag forbidden)
2428: #
2429: # Render the <IMG> tag.
2430: # <IMG> has the following attributes (in addition to the
2431: # standard HTML ones:
2432: # TeXwrap - Governs how the tex target will try to wrap text around
2433: # horizontally aligned images.
2434: # TeXwidth - The width of the image when rendered for print (mm).
2435: # TeXheight - The height of the image when rendered for print (mm)
2436: # (Note there seems to also be support for this as a % of page size)
2437: #
2438: sub start_img {
2439: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2440: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2441: undef,1);
2442: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2443: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2444: return '';
2445: }
2446: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2447: my $currentstring = '';
2448: my $scaling = .3;
2449:
2450: # Render unto browsers that which are the browser's...
2451:
2452: if ($target eq 'web') {
2453: if ($ENV{'browser.imagesuppress'} ne 'on') {
2454: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2455: } else {
2456: my $alttag= &Apache::lonxml::get_param
2457: ('alt',$parstack,$safeeval,undef,1);
2458: unless ($alttag) {
2459: $alttag=&Apache::lonmeta::alttag
2460: ($Apache::lonxml::pwd[-1],$src);
2461: }
2462: $currentstring.='[IMAGE: '.$alttag.']';
2463: }
2464:
2465: # and render unto TeX that which is LaTeX
2466:
2467: } elsif ($target eq 'tex') {
2468: #
2469: # The alignment will require some superstructure to be put around
2470: # the \includegraphics stuff. At present we can only partially
2471: # simulate the alignments offered by html.
2472: #
2473: #
2474: my $align = lc(&Apache::lonxml::get_param('align',
2475: $parstack,
2476: $safeeval,
2477: undef,1));
2478: if(!$align) {
2479: $align = "bottom"; # This is html's default so it's ours too.
2480: }
2481: #
2482: &Apache::lonxml::debug("Alignemnt = $align");
2483: # LaTeX's image/text wrapping is really bad since it wants to
2484: # make figures float.
2485: # The user has the optional parameter (applicable only to l/r
2486: # alignment to use the picins/parpic directive to get wrapped text
2487: # this is also imperfect.. that's why we give them a choice...
2488: # so they can't yell at us for our choice.
2489: #
2490: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2491: $parstack,
2492: $safeeval,
2493: undef,0);
2494: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2495: if(!$latex_rendering) {
2496: $latex_rendering = "parbox";
2497: }
2498: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2499:
2500: #if original gif/jpg/png file exist do following:
2501: my ($path,$file) = &get_eps_image($src);
2502: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2503: &Apache::lonxml::debug("path = $path file = $file src = $src");
2504: if (-e $src) {
2505: &Apache::lonxml::debug("$src exists");
2506: my ($height_param,$width_param)=
2507: &image_size($src,0.3,$parstack,$safeeval);
2508: my $destpath = $path;
2509: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2510: my $destfile = $file;
2511: $destfile =~ s/ /\_/g;
2512: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2513: .'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$destfile.'} ';
2514:
2515: # If there's an alignment specification we need to honor it here.
2516: # For the horizontal alignments, we will also honor the
2517: # value of the latex specfication. The default is parbox,
2518: # and that's used for illegal values too.
2519: #
2520: # Even though we set a default alignment value, the user
2521: # could have given us an illegal value. In that case we
2522: # just use the default alignment of bottom..
2523: if ($align eq "top") {
2524: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2525: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2526: my $offset = $height_param/2;
2527: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2528: } elsif ($align eq "left") {
2529: if ($latex_rendering eq "parpic") {
2530: $currentstring = '\parpic[l]{'.$currentstring.'}';
2531: } else { # parbox rendering
2532: $currentstring = "\\strut\\newline\n".
2533: '\parbox{'.$width_param.'mm}{'.$currentstring.'}';
2534: }
2535: } elsif ($align eq "right") {
2536: if ($latex_rendering eq "parpic") {
2537: $currentstring = '\parpic[r]{'.$currentstring.'}';
2538: } else { # parbox rendering.
2539: $currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
2540: .$currentstring.'\end{flushright}} \newline'."\n";
2541: }
2542: } else { # Bottom is also default.
2543: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2544: }
2545: } else {
2546: &Apache::lonxml::debug("$src does not exist");
2547: #original image file doesn't exist so check the alt attribute
2548: my $alt =
2549: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2550: unless ($alt) {
2551: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2552: }
2553:
2554: if ($alt) { $currentstring .= ' '.$alt.' '; }
2555: }
2556:
2557: # And here's where the semi-quote breaks down: allow the user
2558: # to edit the beast as well by rendering the problem for edit:
2559: } elsif ($target eq 'edit') {
2560: $currentstring .=&Apache::edit::tag_start($target,$token);
2561: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2562: &Apache::edit::browse('src',undef,'alt').' '.
2563: &Apache::edit::search('src',undef,'alt').'<br />';
2564: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2565: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2566: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2567: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2568: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2569: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2570: ['','bottom','middle','top','left','right'],$token,5);
2571: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2572: ['', 'parbox', 'parpic'], $token, 2);
2573: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2574: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2575: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2576: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2577: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2578:
2579:
2580: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2581: if ($width) { $currentstring.=' width="'.$width.'" '; }
2582: if ($height) { $currentstring.=' height="'.$height.'" '; }
2583: $currentstring .= ' />';
2584: } elsif ($target eq 'modified') {
2585: my ($osrc,$owidth,$oheight)=
2586: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2587: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2588: $safeeval,'src','alt','align',
2589: 'TeXwidth','TeXheight', 'TeXwrap',
2590: 'width','height');
2591: my ($nsrc,$nwidth,$nheight)=
2592: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2593: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2594: &image_replication($loc);
2595: my ($iwidth,$iheight);
2596: if (-e $loc) {
2597: my $image = Image::Magick->new;
2598: $image->Read($loc);
2599: ($iwidth, $iheight) = ($image->Get('width'),
2600: $image->Get('height'));
2601: }
2602: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2603: # changed image or no size specified,
2604: # if they didn't explicitly change the
2605: # width or height use the ones from the image
2606: if ($iwidth && $iheight) {
2607: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2608: $token->[2]{'width'} = $iwidth;$ctag=1;
2609: }
2610: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2611: $token->[2]{'height'}=$iheight;$ctag=1;
2612: }
2613: }
2614: }
2615: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2616: # if we don't have a width or height
2617: if ($iwidth && $cwidth && !$cheight) {
2618: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2619: }
2620: if ($iheight && $cheight && !$cwidth) {
2621: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2622: }
2623: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2624: }
2625:
2626: return $currentstring;
2627: }
2628:
2629: sub end_img {
2630: my ($target,$token) = @_;
2631: my $currentstring = '';
2632: if ($target eq 'web') {
2633: $currentstring = $token->[2];
2634: } elsif ($target eq 'tex') {
2635: $currentstring = '';
2636: }
2637: return $currentstring;
2638: }
2639:
2640: #-- <applet> tag (end tag required)
2641: sub start_applet {
2642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2643:
2644: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2645: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2646:
2647: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2648: undef,1);
2649: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2650:
2651: my $currentstring = '';
2652: if ($target eq 'web') {
2653: if ($ENV{'browser.appletsuppress'} ne 'on') {
2654: $currentstring = &Apache::lonenc::encrypt_ref($token,
2655: {'code'=>$code,
2656: 'archive'=>$archive}
2657: );
2658: } else {
2659: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2660: $safeeval,undef,1);
2661: unless ($alttag) {
2662: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2663: $code);
2664: }
2665: $currentstring='[APPLET: '.$alttag.']';
2666: }
2667: } elsif ($target eq 'tex') {
2668: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2669: $safeeval,undef,1);
2670: unless ($alttag) {
2671: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2672: undef,1);
2673: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2674: $code);
2675: }
2676: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2677: '.}\end{center}';
2678: }
2679: return $currentstring;
2680: }
2681:
2682: sub end_applet {
2683: my ($target,$token) = @_;
2684: my $currentstring = '';
2685: if ($target eq 'web') {
2686: $currentstring = $token->[2];
2687: } elsif ($target eq 'tex') {
2688: }
2689: return $currentstring;
2690: }
2691:
2692: #-- <embed> tag (end tag optional/required)
2693: sub start_embed {
2694: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2695: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2696: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2697: my $currentstring = '';
2698: if ($target eq 'web') {
2699: if ($ENV{'browser.embedsuppress'} ne 'on') {
2700: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2701: } else {
2702: my $alttag=&Apache::lonxml::get_param
2703: ('alt',$parstack,$safeeval,undef,1);
2704: unless ($alttag) {
2705: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2706: }
2707: $currentstring='[EMBED: '.$alttag.']';
2708: }
2709: } elsif ($target eq 'tex') {
2710: }
2711: return $currentstring;
2712: }
2713:
2714: sub end_embed {
2715: my ($target,$token) = @_;
2716: my $currentstring = '';
2717: if ($target eq 'web') {
2718: $currentstring = $token->[2];
2719: } elsif ($target eq 'tex') {
2720: }
2721: return $currentstring;
2722: }
2723:
2724: #-- <param> tag (end tag forbidden)
2725: sub start_param {
2726: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2727: if (&Apache::lonxml::get_param
2728: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2729: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2730: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2731: }
2732: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2733: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2734: my $currentstring = '';
2735: if ($target eq 'web') {
2736: my %toconvert;
2737: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2738: if ($src) { $toconvert{'src'}= $src; }
2739: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2740: undef,1);
2741: if ($name=~/^cabbase$/i) {
2742: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2743: $safeeval,undef,1);
2744: }
2745: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2746: } elsif ($target eq 'tex') {
2747: }
2748: return $currentstring;
2749: }
2750:
2751: sub end_param {
2752: my ($target,$token) = @_;
2753: my $currentstring = '';
2754: if ($target eq 'web') {
2755: $currentstring = $token->[2];
2756: } elsif ($target eq 'tex') {
2757: }
2758: return $currentstring;
2759: }
2760:
2761: #-- <allow> tag
2762: sub start_allow {
2763: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2764: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2765: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2766: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2767: &Apache::lonnet::clutter($src);
2768: if ($target eq 'tex') { &image_replication($src); }
2769: my $result;
2770: if ($target eq 'edit') {
2771: $result .=&Apache::edit::tag_start($target,$token);
2772: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2773: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2774: } elsif ($target eq 'modified') {
2775: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2776: $safeeval,'src');
2777: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2778: }
2779: return $result;
2780: }
2781:
2782: sub end_allow {
2783: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2784: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2785: return '';
2786: }
2787:
2788: #-- Frames (end tag required)
2789: #-- <frameset>
2790: sub start_frameset {
2791: my ($target,$token) = @_;
2792: my $currentstring = '';
2793: if ($target eq 'web') {
2794: if (!$Apache::lonxml::registered &&
2795: $ENV{'request.state'} eq 'published') {
2796: $currentstring.='<head>'.
2797: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2798: }
2799: my $onLoad='';
2800: foreach my $key (keys(%{$token->[2]})) {
2801: if ($key =~ /^onload$/i) {
2802: $onLoad.=$token->[2]->{$key}.';';
2803: delete($token->[2]->{$key});
2804: }
2805: }
2806: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2807: my $onUnload='';
2808: foreach my $key (keys(%{$token->[2]})) {
2809: if ($key =~ /^onunload$/i) {
2810: $onUnload.=$token->[2]->{$key}.';';
2811: delete($token->[2]->{$key});
2812: }
2813: }
2814: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2815: ';'.$onUnload;
2816:
2817: $currentstring .= '<'.$token->[1];
2818: foreach (keys %{$token->[2]}) {
2819: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2820: }
2821: $currentstring.='>';
2822: }
2823: return $currentstring;
2824: }
2825:
2826: sub end_frameset {
2827: my ($target,$token) = @_;
2828: my $currentstring = '';
2829: if ($target eq 'web') {
2830: $currentstring = $token->[2];
2831: }
2832: return $currentstring;
2833: }
2834:
2835: #-- <xmp> (end tag required)
2836: sub start_xmp {
2837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2838: my $currentstring = '';
2839: if ($target eq 'web') {
2840: $currentstring .= $token->[4];
2841: } elsif ($target eq 'tex') {
2842: $currentstring .= '\begin{verbatim}';
2843: }
2844: return $currentstring;
2845: }
2846:
2847: sub end_xmp {
2848: my ($target,$token) = @_;
2849: my $currentstring = '';
2850: if ($target eq 'web') {
2851: $currentstring .= $token->[2];
2852: } elsif ($target eq 'tex') {
2853: $currentstring .= '\end{verbatim}';
2854: }
2855: return $currentstring;
2856: }
2857:
2858: #-- <pre> (end tag required)
2859: sub start_pre {
2860: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2861: my $currentstring = '';
2862: if ($target eq 'web') {
2863: $currentstring .= $token->[4];
2864: } elsif ($target eq 'tex') {
2865: $currentstring .= '\begin{verbatim}';
2866: }
2867: return $currentstring;
2868: }
2869:
2870: sub end_pre {
2871: my ($target,$token) = @_;
2872: my $currentstring = '';
2873: if ($target eq 'web') {
2874: $currentstring .= $token->[2];
2875: } elsif ($target eq 'tex') {
2876: $currentstring .= '\end{verbatim}';
2877: }
2878: return $currentstring;
2879: }
2880:
2881: #-- <insert>
2882: sub start_insert {
2883: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2884: my $currentstring = '';
2885: if ($target eq 'web') {
2886: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2887: $currentstring .= '<b>'.$display.'</b>';;
2888: }
2889: return $currentstring;
2890: }
2891:
2892: sub end_insert {
2893: my ($target,$token) = @_;
2894: my $currentstring = '';
2895: if ($target eq 'web') {
2896: $currentstring .= '';
2897: }
2898: return $currentstring;
2899: }
2900:
2901: #-- <externallink>
2902: sub start_externallink {
2903: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2904: my $currentstring = '';
2905: if ($target eq 'web') {
2906: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2907: $currentstring .= '<b>'.$display.'</b>';;
2908: }
2909: return $currentstring;
2910: }
2911:
2912: sub end_externallink {
2913: my ($target,$token) = @_;
2914: my $currentstring = '';
2915: if ($target eq 'web') {
2916: $currentstring .= '';
2917: }
2918: return $currentstring;
2919: }
2920:
2921: #-- <blankspace heigth="">
2922: sub start_blankspace {
2923: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2924: my $currentstring = '';
2925: if ($target eq 'tex') {
2926: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
2927: $currentstring .= '\vskip '.$howmuch.' ';
2928: }
2929: return $currentstring;
2930: }
2931:
2932: sub end_blankspace {
2933: my ($target,$token) = @_;
2934: my $currentstring = '';
2935: if ($target eq 'tex') {
2936: $currentstring .= '';
2937: }
2938: return $currentstring;
2939: }
2940:
2941: #-- <abbr> tag (end tag required)
2942: sub start_abbr {
2943: my ($target,$token) = @_;
2944: my $currentstring = '';
2945: if ($target eq 'web') {
2946: $currentstring = $token->[4];
2947: }
2948: return $currentstring;
2949: }
2950:
2951: sub end_abbr {
2952: my ($target,$token) = @_;
2953: my $currentstring = '';
2954: if ($target eq 'web') {
2955: $currentstring = $token->[2];
2956: }
2957: return $currentstring;
2958: }
2959:
2960: #-- <acronym> tag (end tag required)
2961: sub start_acronym {
2962: my ($target,$token) = @_;
2963: my $currentstring = '';
2964: if ($target eq 'web') {
2965: $currentstring = $token->[4];
2966: }
2967: return $currentstring;
2968: }
2969:
2970: sub end_acronym {
2971: my ($target,$token) = @_;
2972: my $currentstring = '';
2973: if ($target eq 'web') {
2974: $currentstring = $token->[2];
2975: }
2976: return $currentstring;
2977: }
2978:
2979: #-- <area> tag (end tag forbidden)
2980: sub start_area {
2981: my ($target,$token) = @_;
2982: my $currentstring = '';
2983: if ($target eq 'web') {
2984: $currentstring = $token->[4];
2985: }
2986: return $currentstring;
2987: }
2988:
2989: sub end_area {
2990: my ($target,$token) = @_;
2991: my $currentstring = '';
2992: if ($target eq 'web') {
2993: $currentstring = $token->[2];
2994: }
2995: return $currentstring;
2996: }
2997:
2998: #-- <base> tag (end tag forbidden)
2999: sub start_base {
3000: my ($target,$token) = @_;
3001: my $currentstring = '';
3002: if ($target eq 'web') {
3003: $currentstring = $token->[4];
3004: }
3005: return $currentstring;
3006: }
3007:
3008: sub end_base {
3009: my ($target,$token) = @_;
3010: my $currentstring = '';
3011: if ($target eq 'web') {
3012: $currentstring = $token->[2];
3013: }
3014: return $currentstring;
3015: }
3016:
3017: #-- <bdo> tag (end tag required)
3018: sub start_bdo {
3019: my ($target,$token) = @_;
3020: my $currentstring = '';
3021: if ($target eq 'web') {
3022: $currentstring = $token->[4];
3023: }
3024: return $currentstring;
3025: }
3026:
3027: sub end_bdo {
3028: my ($target,$token) = @_;
3029: my $currentstring = '';
3030: if ($target eq 'web') {
3031: $currentstring = $token->[2];
3032: }
3033: return $currentstring;
3034: }
3035:
3036: #-- <bgsound> tag (end tag optional)
3037: sub start_bgsound {
3038: my ($target,$token) = @_;
3039: my $currentstring = '';
3040: if ($target eq 'web') {
3041: $currentstring = $token->[4];
3042: }
3043: return $currentstring;
3044: }
3045:
3046: sub end_bgsound {
3047: my ($target,$token) = @_;
3048: my $currentstring = '';
3049: if ($target eq 'web') {
3050: $currentstring = $token->[2];
3051: }
3052: return $currentstring;
3053: }
3054:
3055: #-- <blink> tag (end tag required)
3056: sub start_blink {
3057: my ($target,$token) = @_;
3058: my $currentstring = '';
3059: if ($target eq 'web') {
3060: $currentstring = $token->[4];
3061: }
3062: return $currentstring;
3063: }
3064:
3065: sub end_blink {
3066: my ($target,$token) = @_;
3067: my $currentstring = '';
3068: if ($target eq 'web') {
3069: $currentstring = $token->[2];
3070: }
3071: return $currentstring;
3072: }
3073:
3074: #-- <blockquote> tag (end tag required)
3075: sub start_blockquote {
3076: my ($target,$token) = @_;
3077: my $currentstring = '';
3078: if ($target eq 'web') {
3079: $currentstring = $token->[4];
3080: }
3081: return $currentstring;
3082: }
3083:
3084: sub end_blockquote {
3085: my ($target,$token) = @_;
3086: my $currentstring = '';
3087: if ($target eq 'web') {
3088: $currentstring = $token->[2];
3089: }
3090: return $currentstring;
3091: }
3092:
3093: #-- <button> tag (end tag required)
3094: sub start_button {
3095: my ($target,$token) = @_;
3096: my $currentstring = '';
3097: if ($target eq 'web') {
3098: $currentstring = $token->[4];
3099: }
3100: return $currentstring;
3101: }
3102:
3103: sub end_button {
3104: my ($target,$token) = @_;
3105: my $currentstring = '';
3106: if ($target eq 'web') {
3107: $currentstring = $token->[2];
3108: }
3109: return $currentstring;
3110: }
3111:
3112: #-- <caption> tag (end tag required)
3113: sub start_caption {
3114: my ($target,$token) = @_;
3115: my $currentstring = '';
3116: if ($target eq 'web') {
3117: $currentstring = $token->[4];
3118: }
3119: return $currentstring;
3120: }
3121:
3122: sub end_caption {
3123: my ($target,$token) = @_;
3124: my $currentstring = '';
3125: if ($target eq 'web') {
3126: $currentstring = $token->[2];
3127: }
3128: return $currentstring;
3129: }
3130:
3131: #-- <col> tag (end tag forbdden)
3132: sub start_col {
3133: my ($target,$token) = @_;
3134: my $currentstring = '';
3135: if ($target eq 'web') {
3136: $currentstring = $token->[4];
3137: }
3138: return $currentstring;
3139: }
3140:
3141: sub end_col {
3142: my ($target,$token) = @_;
3143: my $currentstring = '';
3144: if ($target eq 'web') {
3145: $currentstring = $token->[2];
3146: }
3147: return $currentstring;
3148: }
3149:
3150: #-- <colgroup> tag (end tag optional)
3151: sub start_colgroup {
3152: my ($target,$token) = @_;
3153: my $currentstring = '';
3154: if ($target eq 'web') {
3155: $currentstring = $token->[4];
3156: }
3157: return $currentstring;
3158: }
3159:
3160: sub end_colgroup {
3161: my ($target,$token) = @_;
3162: my $currentstring = '';
3163: if ($target eq 'web') {
3164: $currentstring = $token->[2];
3165: }
3166: return $currentstring;
3167: }
3168:
3169: #-- <del> tag (end tag required)
3170: sub start_del {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web') {
3174: $currentstring = $token->[4];
3175: }
3176: return $currentstring;
3177: }
3178:
3179: sub end_del {
3180: my ($target,$token) = @_;
3181: my $currentstring = '';
3182: if ($target eq 'web') {
3183: $currentstring = $token->[2];
3184: }
3185: return $currentstring;
3186: }
3187:
3188: #-- <fieldset> tag (end tag required)
3189: sub start_fieldset {
3190: my ($target,$token) = @_;
3191: my $currentstring = '';
3192: if ($target eq 'web') {
3193: $currentstring = $token->[4];
3194: }
3195: return $currentstring;
3196: }
3197:
3198: sub end_fieldset {
3199: my ($target,$token) = @_;
3200: my $currentstring = '';
3201: if ($target eq 'web') {
3202: $currentstring = $token->[2];
3203: }
3204: return $currentstring;
3205: }
3206:
3207: #-- <frame> tag (end tag forbidden)
3208: sub start_frame {
3209: my ($target,$token) = @_;
3210: my $currentstring = '';
3211: if ($target eq 'web') {
3212: $currentstring = $token->[4];
3213: }
3214: return $currentstring;
3215: }
3216:
3217: sub end_frame {
3218: my ($target,$token) = @_;
3219: my $currentstring = '';
3220: if ($target eq 'web') {
3221: $currentstring = $token->[2];
3222: }
3223: return $currentstring;
3224: }
3225:
3226: #-- <iframe> tag (end tag required)
3227: sub start_iframe {
3228: my ($target,$token) = @_;
3229: my $currentstring = '';
3230: if ($target eq 'web') {
3231: $currentstring = $token->[4];
3232: }
3233: return $currentstring;
3234: }
3235:
3236: sub end_iframe {
3237: my ($target,$token) = @_;
3238: my $currentstring = '';
3239: if ($target eq 'web') {
3240: $currentstring = $token->[2];
3241: }
3242: return $currentstring;
3243: }
3244:
3245: #-- <ins> tag (end tag required)
3246: sub start_ins {
3247: my ($target,$token) = @_;
3248: my $currentstring = '';
3249: if ($target eq 'web') {
3250: $currentstring = $token->[4];
3251: }
3252: return $currentstring;
3253: }
3254:
3255: sub end_ins {
3256: my ($target,$token) = @_;
3257: my $currentstring = '';
3258: if ($target eq 'web') {
3259: $currentstring = $token->[2];
3260: }
3261: return $currentstring;
3262: }
3263:
3264: #-- <isindex> tag (end tag forbidden)
3265: sub start_isindex {
3266: my ($target,$token) = @_;
3267: my $currentstring = '';
3268: if ($target eq 'web') {
3269: $currentstring = $token->[4];
3270: }
3271: return $currentstring;
3272: }
3273:
3274: sub end_isindex {
3275: my ($target,$token) = @_;
3276: my $currentstring = '';
3277: if ($target eq 'web') {
3278: $currentstring = $token->[2];
3279: }
3280: return $currentstring;
3281: }
3282:
3283: #-- <keygen> tag (end tag forbidden)
3284: sub start_keygen {
3285: my ($target,$token) = @_;
3286: my $currentstring = '';
3287: if ($target eq 'web') {
3288: $currentstring = $token->[4];
3289: }
3290: return $currentstring;
3291: }
3292:
3293: sub end_keygen {
3294: my ($target,$token) = @_;
3295: my $currentstring = '';
3296: if ($target eq 'web') {
3297: $currentstring = $token->[2];
3298: }
3299: return $currentstring;
3300: }
3301:
3302: #-- <label> tag
3303: sub start_label {
3304: my ($target,$token) = @_;
3305: my $currentstring = '';
3306: if ($target eq 'web') {
3307: $currentstring = $token->[4];
3308: }
3309: return $currentstring;
3310: }
3311:
3312: sub end_label {
3313: my ($target,$token) = @_;
3314: my $currentstring = '';
3315: if ($target eq 'web') {
3316: $currentstring = $token->[2];
3317: }
3318: return $currentstring;
3319: }
3320:
3321: #-- <layer> tag (end tag required)
3322: sub start_layer {
3323: my ($target,$token) = @_;
3324: my $currentstring = '';
3325: if ($target eq 'web') {
3326: $currentstring = $token->[4];
3327: }
3328: return $currentstring;
3329: }
3330:
3331: sub end_layer {
3332: my ($target,$token) = @_;
3333: my $currentstring = '';
3334: if ($target eq 'web') {
3335: $currentstring = $token->[2];
3336: }
3337: return $currentstring;
3338: }
3339:
3340: #-- <legend> tag (end tag required)
3341: sub start_legend {
3342: my ($target,$token) = @_;
3343: my $currentstring = '';
3344: if ($target eq 'web') {
3345: $currentstring = $token->[4];
3346: }
3347: return $currentstring;
3348: }
3349:
3350: sub end_legend {
3351: my ($target,$token) = @_;
3352: my $currentstring = '';
3353: if ($target eq 'web') {
3354: $currentstring = $token->[2];
3355: }
3356: return $currentstring;
3357: }
3358:
3359: #-- <link> tag (end tag forbidden)
3360: sub start_link {
3361: my ($target,$token) = @_;
3362: my $currentstring = '';
3363: if ($target eq 'web') {
3364: $currentstring = $token->[4];
3365: }
3366: return $currentstring;
3367: }
3368:
3369: sub end_link {
3370: my ($target,$token) = @_;
3371: my $currentstring = '';
3372: if ($target eq 'web') {
3373: $currentstring = $token->[2];
3374: }
3375: return $currentstring;
3376: }
3377:
3378: #-- <marquee> tag (end tag optional)
3379: sub start_marquee {
3380: my ($target,$token) = @_;
3381: my $currentstring = '';
3382: if ($target eq 'web') {
3383: $currentstring = $token->[4];
3384: }
3385: return $currentstring;
3386: }
3387:
3388: sub end_marquee {
3389: my ($target,$token) = @_;
3390: my $currentstring = '';
3391: if ($target eq 'web') {
3392: $currentstring = $token->[2];
3393: }
3394: return $currentstring;
3395: }
3396:
3397: #-- <multicol> tag (end tag required)
3398: sub start_multicol {
3399: my ($target,$token) = @_;
3400: my $currentstring = '';
3401: if ($target eq 'web') {
3402: $currentstring = $token->[4];
3403: }
3404: return $currentstring;
3405: }
3406:
3407: sub end_multicol {
3408: my ($target,$token) = @_;
3409: my $currentstring = '';
3410: if ($target eq 'web') {
3411: $currentstring = $token->[2];
3412: }
3413: return $currentstring;
3414: }
3415:
3416: #-- <nobr> tag (end tag required)
3417: sub start_nobr {
3418: my ($target,$token) = @_;
3419: my $currentstring = '';
3420: if ($target eq 'web') {
3421: $currentstring = $token->[4];
3422: } elsif ($target eq 'tex') {
3423: $currentstring='\mbox{';
3424: }
3425: return $currentstring;
3426: }
3427:
3428: sub end_nobr {
3429: my ($target,$token) = @_;
3430: my $currentstring = '';
3431: if ($target eq 'web') {
3432: $currentstring = $token->[2];
3433: } elsif ($target eq 'tex') {
3434: $currentstring='}';
3435: }
3436: return $currentstring;
3437: }
3438:
3439: #-- <noembed> tag (end tag required)
3440: sub start_noembed {
3441: my ($target,$token) = @_;
3442: my $currentstring = '';
3443: if ($target eq 'web') {
3444: $currentstring = $token->[4];
3445: }
3446: return $currentstring;
3447: }
3448:
3449: sub end_noembed {
3450: my ($target,$token) = @_;
3451: my $currentstring = '';
3452: if ($target eq 'web') {
3453: $currentstring = $token->[2];
3454: }
3455: return $currentstring;
3456: }
3457:
3458: #-- <noframes> tag (end tag required)
3459: sub start_noframes {
3460: my ($target,$token) = @_;
3461: my $currentstring = '';
3462: if ($target eq 'web') {
3463: $currentstring = $token->[4];
3464: }
3465: return $currentstring;
3466: }
3467:
3468: sub end_noframes {
3469: my ($target,$token) = @_;
3470: my $currentstring = '';
3471: if ($target eq 'web') {
3472: $currentstring = $token->[2];
3473: }
3474: return $currentstring;
3475: }
3476:
3477: #-- <nolayer> tag (end tag required)
3478: sub start_nolayer {
3479: my ($target,$token) = @_;
3480: my $currentstring = '';
3481: if ($target eq 'web') {
3482: $currentstring = $token->[4];
3483: }
3484: return $currentstring;
3485: }
3486:
3487: sub end_nolayer {
3488: my ($target,$token) = @_;
3489: my $currentstring = '';
3490: if ($target eq 'web') {
3491: $currentstring = $token->[2];
3492: }
3493: return $currentstring;
3494: }
3495:
3496: #-- <noscript> tag (end tag required)
3497: sub start_noscript {
3498: my ($target,$token) = @_;
3499: my $currentstring = '';
3500: if ($target eq 'web') {
3501: $currentstring = $token->[4];
3502: }
3503: return $currentstring;
3504: }
3505:
3506: sub end_noscript {
3507: my ($target,$token) = @_;
3508: my $currentstring = '';
3509: if ($target eq 'web') {
3510: $currentstring = $token->[2];
3511: }
3512: return $currentstring;
3513: }
3514:
3515: #-- <object> tag (end tag required)
3516: sub start_object {
3517: my ($target,$token) = @_;
3518: my $currentstring = '';
3519: if ($target eq 'web') {
3520: $currentstring = $token->[4];
3521: }
3522: return $currentstring;
3523: }
3524:
3525: sub end_object {
3526: my ($target,$token) = @_;
3527: my $currentstring = '';
3528: if ($target eq 'web') {
3529: $currentstring = $token->[2];
3530: }
3531: return $currentstring;
3532: }
3533:
3534: #-- <optgroup> tag (end tag required)
3535: sub start_optgroup {
3536: my ($target,$token) = @_;
3537: my $currentstring = '';
3538: if ($target eq 'web') {
3539: $currentstring = $token->[4];
3540: }
3541: return $currentstring;
3542: }
3543:
3544: sub end_optgroup {
3545: my ($target,$token) = @_;
3546: my $currentstring = '';
3547: if ($target eq 'web') {
3548: $currentstring = $token->[2];
3549: }
3550: return $currentstring;
3551: }
3552:
3553: #-- <samp> tag (end tag required)
3554: sub start_samp {
3555: my ($target,$token) = @_;
3556: my $currentstring = '';
3557: if ($target eq 'web') {
3558: $currentstring = $token->[4];
3559: } elsif ($target eq 'tex') {
3560: $currentstring='\texttt{';
3561: }
3562: return $currentstring;
3563: }
3564:
3565: sub end_samp {
3566: my ($target,$token) = @_;
3567: my $currentstring = '';
3568: if ($target eq 'web') {
3569: $currentstring = $token->[2];
3570: } elsif ($target eq 'tex') {
3571: $currentstring='}';
3572: }
3573: return $currentstring;
3574: }
3575:
3576: #-- <server> tag
3577: sub start_server {
3578: my ($target,$token) = @_;
3579: my $currentstring = '';
3580: if ($target eq 'web') {
3581: $currentstring = $token->[4];
3582: }
3583: return $currentstring;
3584: }
3585:
3586: sub end_server {
3587: my ($target,$token) = @_;
3588: my $currentstring = '';
3589: if ($target eq 'web') {
3590: $currentstring = $token->[2];
3591: }
3592: return $currentstring;
3593: }
3594:
3595: #-- <spacer> tag (end tag forbidden)
3596: sub start_spacer {
3597: my ($target,$token) = @_;
3598: my $currentstring = '';
3599: if ($target eq 'web') {
3600: $currentstring = $token->[4];
3601: }
3602: return $currentstring;
3603: }
3604:
3605: sub end_spacer {
3606: my ($target,$token) = @_;
3607: my $currentstring = '';
3608: if ($target eq 'web') {
3609: $currentstring = $token->[2];
3610: }
3611: return $currentstring;
3612: }
3613:
3614: #-- <span> tag (end tag required)
3615: sub start_span {
3616: my ($target,$token) = @_;
3617: my $currentstring = '';
3618: if ($target eq 'web') {
3619: $currentstring = $token->[4];
3620: }
3621: return $currentstring;
3622: }
3623:
3624: sub end_span {
3625: my ($target,$token) = @_;
3626: my $currentstring = '';
3627: if ($target eq 'web') {
3628: $currentstring = $token->[2];
3629: }
3630: return $currentstring;
3631: }
3632:
3633: #-- <tbody> tag (end tag optional)
3634: sub start_tbody {
3635: my ($target,$token) = @_;
3636: my $currentstring = '';
3637: if ($target eq 'web') {
3638: $currentstring = $token->[4];
3639: }
3640: return $currentstring;
3641: }
3642:
3643: sub end_tbody {
3644: my ($target,$token) = @_;
3645: my $currentstring = '';
3646: if ($target eq 'web') {
3647: $currentstring = $token->[2];
3648: }
3649: return $currentstring;
3650: }
3651:
3652: #-- <tfoot> tag (end tag optional)
3653: sub start_tfoot {
3654: my ($target,$token) = @_;
3655: my $currentstring = '';
3656: if ($target eq 'web') {
3657: $currentstring = $token->[4];
3658: }
3659: return $currentstring;
3660: }
3661:
3662: sub end_tfoot {
3663: my ($target,$token) = @_;
3664: my $currentstring = '';
3665: if ($target eq 'web') {
3666: $currentstring = $token->[2];
3667: }
3668: return $currentstring;
3669: }
3670:
3671: #-- <thead> tag (end tag optional)
3672: sub start_thead {
3673: my ($target,$token) = @_;
3674: my $currentstring = '';
3675: if ($target eq 'web') {
3676: $currentstring = $token->[4];
3677: }
3678: return $currentstring;
3679: }
3680:
3681: sub end_thead {
3682: my ($target,$token) = @_;
3683: my $currentstring = '';
3684: if ($target eq 'web') {
3685: $currentstring = $token->[2];
3686: }
3687: return $currentstring;
3688: }
3689:
3690: #-- <var> tag
3691: sub start_var {
3692: my ($target,$token) = @_;
3693: my $currentstring = '';
3694: if ($target eq 'web') {
3695: $currentstring = $token->[4];
3696: } elsif ($target eq 'tex') {
3697: $currentstring = '\textit{';
3698: }
3699: return $currentstring;
3700: }
3701:
3702: sub end_var {
3703: my ($target,$token) = @_;
3704: my $currentstring = '';
3705: if ($target eq 'web') {
3706: $currentstring = $token->[2];
3707: } elsif ($target eq 'tex') {
3708: $currentstring = '}';
3709: }
3710: return $currentstring;
3711: }
3712:
3713: #-- <wbr> tag (end tag forbidden)
3714: sub start_wbr {
3715: my ($target,$token) = @_;
3716: my $currentstring = '';
3717: if ($target eq 'web') {
3718: $currentstring = $token->[4];
3719: }
3720: return $currentstring;
3721: }
3722:
3723: sub end_wbr {
3724: my ($target,$token) = @_;
3725: my $currentstring = '';
3726: if ($target eq 'web') {
3727: $currentstring = $token->[2];
3728: }
3729: return $currentstring;
3730: }
3731:
3732: #-- <hideweboutput> tag
3733: sub start_hideweboutput {
3734: my ($target,$token) = @_;
3735: if ($target eq 'web') {
3736: &Apache::lonxml::startredirection();
3737: }
3738: return '';
3739: }
3740:
3741: sub end_hideweboutput {
3742: my ($target,$token) = @_;
3743: my $currentstring = '';
3744: if ($target eq 'web') {
3745: $currentstring = &Apache::lonxml::endredirection();
3746: }
3747: return '';
3748: }
3749:
3750:
3751: sub image_replication {
3752: my $src = shift;
3753: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3754: #replicates eps or ps
3755: my $epssrc = my $pssrc = $src;
3756: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3757: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3758: if (not -e $epssrc && not -e $pssrc) {
3759: my $result=&Apache::lonnet::repcopy($epssrc);
3760: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
3761: }
3762: return '';
3763: }
3764:
3765: sub image_size {
3766: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3767:
3768: #size of image from gif/jpg/jpeg/png
3769: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3770: if (-e $ressrc) {
3771: $src = $ressrc;
3772: }
3773: my $image = Image::Magick->new;
3774: my $current_figure = $image->Read($src);
3775: my $width_param = $image->Get('width') * $scaling;;
3776: my $height_param = $image->Get('height') * $scaling;
3777: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
3778: undef($image);
3779: #do we have any specified LaTeX size of the picture?
3780: my $toget='TeXwidth';
3781: if ($cis) {
3782: $toget=lc($toget);
3783: }
3784: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3785: $safeeval,$depth,$cis);
3786: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3787: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3788: $safeeval,$depth,$cis);
3789: #do we have any specified web size of the picture?
3790: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3791: $depth,1);
3792: if ($TeXwidth) {
3793: my $old_width_param=$width_param;
3794: if ($TeXwidth=~/(\d+)\s*\%/) {
3795: $width_param = $1*$ENV{'form.textwidth'}/100;
3796: } else {
3797: $width_param = $TeXwidth;
3798: }
3799: $height_param=$TeXwidth/$old_width_param*$height_param;
3800: } elsif ($TeXheight) {
3801: $height_param = $TeXheight;
3802: $width_param = $TeXheight/$height_param*$width_param;
3803: } elsif ($width) {
3804: my $old_width_param=$width_param;
3805: $width_param = $width*$scaling;
3806: $height_param=$width_param/$old_width_param*$height_param;
3807: }
3808: if ($width_param > $ENV{'form.textwidth'}) {
3809: my $old_width_param=$width_param;
3810: $width_param =0.95*$ENV{'form.textwidth'};
3811: $height_param=$width_param/$old_width_param*$height_param;
3812: }
3813: return ($height_param, $width_param);
3814: }
3815:
3816: sub image_width {
3817: my ($height, $width) = &image_size(@_);
3818: return $width;
3819: }
3820: # Not yet 100% sure this is correct in all circumstances..
3821: # due to my uncertainty about mods to image_size.
3822: #
3823: sub image_height {
3824: my ($height, $width) = &image_size(@_);
3825: return $height;
3826: }
3827:
3828: sub get_eps_image {
3829: my ($src)=@_;
3830: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
3831: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src<BR />");
3832: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3833: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3834: &Apache::lonxml::debug("Filelocation gives; $src <BR />");
3835: if (! -e $src) {
3836: &Apache::lonxml::debug("$src does not exist");
3837: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
3838: &Apache::lonxml::debug("Repcopy of $src failed (1)");
3839: #if replication failed try to find ps file
3840: $src=~s/\.eps$/\.ps/;
3841: &Apache::lonxml::debug("Now looking for $src");
3842: #if no ps file try to replicate it
3843: if (not -e $src &&
3844: &Apache::lonnet::repcopy($src) ne 'ok') {
3845: &Apache::lonxml::debug("Failed to find or replicate $src");
3846:
3847: #if replication failed try to produce eps file dynamically
3848: $src=~s/\.ps$/\.eps/;
3849: my $temp_file;
3850: open(FILE,">>/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat");
3851: my $newsrc=$orig_src;
3852: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
3853: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production. <BR/>");
3854: print FILE "$newsrc\n";
3855: close FILE;
3856: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
3857: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
3858: }
3859: }
3860: }
3861: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
3862: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
3863: return ($path.'/',$file);
3864: }
3865:
3866: sub eps_generation {
3867: my ($src,$file,$width_param) = @_;
3868: my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
3869: my $temp_file = Apache::File->new('>>'.$filename);
3870: print $temp_file "$src\n";
3871: my $newsrc = $src;
3872: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
3873: $newsrc=~s/\/home\/httpd\/html\/res//;
3874: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
3875: $newsrc=~s/\/\.\//\//;
3876: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
3877: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
3878: $newsrc=~s/\/home\/httpd\/lonUsers//;
3879: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
3880: }
3881: if ($newsrc=~/\/userfiles\//) {
3882: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3883: } else {
3884: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
3885: }
3886: }
3887:
3888: sub file_path {
3889: my $src=shift;
3890: my ($file,$path);
3891: if ($src =~ m!(.*)/([^/]*)$!) {
3892: $file = $2;
3893: $path = $1.'/';
3894: }
3895: return $file,$path;
3896: }
3897:
3898: sub recalc {
3899: my $argument = shift;
3900: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
3901: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
3902: my $value=$1;
3903: my $units=$2;
3904: if ($units eq 'cm') {
3905: $value*=10;
3906: } elsif ($units eq 'in') {
3907: $value*=25.4;
3908: } elsif ($units eq 'pc') {
3909: $value*=(25.4*12/72.27);
3910: } elsif ($units eq 'pt') {
3911: $value*=(25.4/72.27);
3912: }
3913: return $value.' mm';
3914: }
3915:
3916: sub LATEX_length {
3917: my $garbage=shift;
3918: $garbage=~s/^\s+$//;
3919: $garbage=~s/^\s+(\S.*)/$1/;#space before
3920: $garbage=~s/(.*\S)\s+$/$1/;#space after
3921: $garbage=~s/(\s)+/$1/;#only one space
3922: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
3923: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
3924: $garbage=~s/([^\\])\$/$1/g;#$
3925: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
3926: $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;
3927: $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;
3928: $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;
3929: $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;
3930: $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;
3931: $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;
3932: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
3933: #remove some other LaTeX command
3934: $garbage=~s|\\(\w+)\\|\\|g;
3935: $garbage=~s|\\(\w+)(\s*)|$2|g;
3936: $garbage=~s|\+|11|g;
3937: my $value=length($garbage);
3938: return $value;
3939: }
3940:
3941:
3942:
3943:
3944: 1;
3945: __END__
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