1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.286 2005/09/19 10:59:08 foxr 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: use File::Basename;
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,$$parstack[-1]);
91: #&Apache::lonxml::debug("M is evaulated to:$inside:");
92: }
93: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
94: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
95: if ($Apache::lontexconvert::errorstring) {
96: &Apache::lonxml::warning("tth error: ".
97: $Apache::lontexconvert::errorstring);
98: $Apache::lontexconvert::errorstring='';
99: }
100: #&Apache::lonxml::debug("M is ends with:$currentstring:");
101: $Apache::lonxml::post_evaluate=0;
102: } elsif ($target eq 'tex') {
103: $currentstring = $inside;
104: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
105: if ($eval eq 'on') {
106: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
107: }
108: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
109: # detect simple math mode entry exits, and convert them
110: # to use \ensuremath
111: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
112: $currentstring=~s/^\$//;
113: $currentstring=~s/\$$//;
114: $currentstring='\ensuremath{'.$currentstring.'}';
115: }
116: $Apache::lonxml::post_evaluate=0;
117: }
118: return $currentstring;
119: }
120:
121: sub end_m {
122: my ($target,$token) = @_;
123: my $currentstring = '';
124: if ($target eq 'tex') {
125: $currentstring = "";
126: }
127: return $currentstring;
128: }
129:
130: sub start_tthoption {
131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
132: my $result;
133: if ($target eq 'web') {
134: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
135: $inside=~s/^\s*//;
136: if ($env{'browser.mathml'}) {
137: &tth::ttmoptions($inside);
138: } else {
139: &tth::tthoptions($inside);
140: }
141: }
142: return $result;
143: }
144:
145: sub end_tthoption {
146: my ($target,$token) = @_;
147: my $result;
148: return $result;
149: }
150:
151: #-- <html> tag (end tag optional)
152: sub start_html {
153: my ($target,$token) = @_;
154: my $currentstring = '';
155: my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
156: &Apache::lontexconvert::init_tth();
157: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
158: $currentstring = &Apache::lonxml::xmlbegin();
159: } elsif ($target eq 'tex') {
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{wrapfig}'.
170: '\usepackage{picins}'.
171: '\usepackage{epsfig}'.
172: '\usepackage{calc}'.
173: '\usepackage{amsmath}'.
174: '\usepackage{amssymb}'.
175: '\usepackage{amsfonts}'.
176: '\usepackage{amsthm}'.
177: '\usepackage{amscd}'.
178: '\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}}'.
179: '\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}}';
180: }
181: return $currentstring;
182: }
183:
184: sub end_html {
185: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
186: my $currentstring = '';
187: if ($target eq 'web') {
188: $currentstring = '</html>';
189: }
190: return $currentstring;
191: }
192:
193: #-- <head> tag (end tag optional)
194: sub start_head {
195: my ($target,$token) = @_;
196: my $currentstring = '';
197: if ($target eq 'web') {
198: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
199: }
200: return $currentstring;
201: }
202:
203: sub end_head {
204: my ($target,$token) = @_;
205: my $currentstring = '';
206: if ($target eq 'web' && $env{'request.state'} eq 'published') {
207: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
208: $token->[2];
209: }
210: return $currentstring;
211: }
212:
213: #-- <map> tag (end tag required)
214: sub start_map {
215: my ($target,$token) = @_;
216: my $currentstring = '';
217: if ($target eq 'web') {
218: $currentstring = $token->[4];
219: }
220: return $currentstring;
221: }
222:
223: sub end_map {
224: my ($target,$token) = @_;
225: my $currentstring = '';
226: if ($target eq 'web') {
227: $currentstring = $token->[2];
228: }
229: return $currentstring;
230: }
231:
232: #-- <select> tag (end tag required)
233: sub start_select {
234: my ($target,$token) = @_;
235: my $currentstring = '';
236: if ($target eq 'web') {
237: $currentstring = $token->[4];
238: } elsif ($target eq 'tex') {
239: $Apache::londefdef::select=0;
240: }
241: return $currentstring;
242: }
243:
244: sub end_select {
245: my ($target,$token) = @_;
246: my $currentstring = '';
247: if ($target eq 'web') {
248: $currentstring = $token->[2];
249: }
250: return $currentstring;
251: }
252:
253: #-- <option> tag (end tag optional)
254: sub start_option {
255: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
256: my $currentstring = '';
257: if ($target eq 'web') {
258: $currentstring = $token->[4];
259: } elsif ($target eq 'tex') {
260: $Apache::londefdef::select++;
261: if ($Apache::londefdef::select == 1) {
262: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
263: } else {
264: $currentstring='\keephidden{';
265: }
266: }
267: return $currentstring;
268: }
269:
270: sub end_option {
271: my ($target,$token) = @_;
272: my $currentstring = '';
273: if ($target eq 'web') {
274: $currentstring = $token->[2];
275: } elsif ($target eq 'tex') {
276: $currentstring='}';
277: }
278: return $currentstring;
279: }
280:
281: #-- <input> tag (end tag forbidden)
282: sub start_input {
283: my ($target,$token) = @_;
284: my $currentstring = '';
285: if ($target eq 'web') {
286: $currentstring = $token->[4];
287: }
288: return $currentstring;
289: }
290:
291: sub end_input {
292: my ($target,$token) = @_;
293: my $currentstring = '';
294: if ($target eq 'web') {
295: $currentstring = $token->[2];
296: }
297: return $currentstring;
298: }
299:
300: #-- <textarea> tag (end tag required)
301: sub start_textarea {
302: my ($target,$token) = @_;
303: my $currentstring = '';
304: if ($target eq 'web') {
305: $currentstring = $token->[4];
306: }
307: return $currentstring;
308: }
309:
310: sub end_textarea {
311: my ($target,$token) = @_;
312: my $currentstring = '';
313: if ($target eq 'web') {
314: $currentstring = $token->[2];
315: }
316: return $currentstring;
317: }
318:
319: #-- <form> tag (end tag required)
320: sub start_form {
321: my ($target,$token) = @_;
322: my $currentstring = '';
323: if ($target eq 'web') {
324: $currentstring = $token->[4];
325: }
326: return $currentstring;
327: }
328:
329: sub end_form {
330: my ($target,$token) = @_;
331: my $currentstring = '';
332: if ($target eq 'web') {
333: $currentstring = $token->[2];
334: }
335: return $currentstring;
336: }
337:
338: #-- <title> tag (end tag required)
339: sub start_title {
340: my ($target,$token) = @_;
341: my $currentstring = '';
342: if ($target eq 'web') {
343: $currentstring = $token->[4];
344: } elsif ($target eq 'tex') {
345: $currentstring .= '\keephidden{Title of the document: '
346: }
347: if ($target eq 'meta') {
348: $currentstring='<title>';
349: &start_output($target);
350: }
351: return $currentstring;
352: }
353:
354: sub end_title {
355: my ($target,$token) = @_;
356: my $currentstring = '';
357: if ($target eq 'web') {
358: $currentstring = $token->[2];
359: } elsif ($target eq 'tex') {
360: $currentstring .= '}';
361: }
362: if ($target eq 'meta') {
363: &end_output($target);
364: $currentstring='</title>';
365: }
366: return $currentstring;
367: }
368:
369: #-- <meta> tag (end tag forbidden)
370: sub start_meta {
371: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
372: my $currentstring = '';
373: if ($target eq 'web') {
374: my $args='';
375: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
376: if ($args eq '') {
377: &Apache::lonxml::get_all_text("/meta",$parser);
378: } else {
379: $currentstring = $token->[4];
380: }
381: } elsif ($target eq 'meta') {
382: unless (&Apache::lonxml::get_param
383: ('http-equiv',$parstack,$safeeval,undef,1)) {
384: my $name=$token->[2]->{'name'};
385: $name=~tr/A-Z/a-z/;
386: $name=~s/\s/\_/gs;
387: $name=~s/\W//gs;
388: if ($name) {
389: $currentstring='<'.$name;
390: my $display=&Apache::lonxml::get_param
391: ('display',$parstack,$safeeval,undef,1);
392: if ($display) {
393: $display=~s/\"/\'/g;
394: $currentstring.=' display="'.$display.'"';
395: }
396: $currentstring.='>'.
397: &Apache::lonxml::get_param
398: ('content',$parstack,$safeeval,undef,1).
399: '</'.$name.'>';
400: }
401: my $display=&Apache::lonxml::get_param
402: ('display',$parstack,$safeeval,undef,1);
403: if ($display) {
404: $display=&HTML::Entities::encode($display,'<>&"');
405: $currentstring.='<'.$name.'.display>'.$display.
406: '</'.$name.'.display>';
407: }
408: }
409: } elsif ($target eq 'tex') {
410: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
411: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
412: if ((not defined $content) && (not defined $name)) {
413: &Apache::lonxml::startredirection();
414: }
415: }
416: return $currentstring;
417: }
418:
419: sub end_meta {
420: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
421: my $currentstring = '';
422: if ($target eq 'web') {
423: my $args='';
424: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
425: if ($args ne '') {
426: $currentstring = $token->[4];
427: }
428: } elsif ($target eq 'tex') {
429: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
430: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
431: if ((not defined $content) && (not defined $name)) {
432: &Apache::lonxml::endredirection();
433: }
434: }
435: return $currentstring;
436: }
437:
438: # accessrule
439: sub start_accessrule {
440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
441: my $currentstring = '';
442: my $eff=&Apache::lonxml::get_param
443: ('effect',$parstack,$safeeval,undef,1);
444: my $realm=&Apache::lonxml::get_param
445: ('realm',$parstack,$safeeval,undef,1);
446: my $role=&Apache::lonxml::get_param
447: ('role',$parstack,$safeeval,undef,1);
448: $realm=~s/\s+//g;
449: $realm=~s/\//\_/g;
450: $realm=~s/^\_//;
451: $realm=~s/\W/\;/g;
452: $role=~s/\s+//g;
453: $role=~s/\//\_/g;
454: $role=~s/\W/\;/g;
455: if ($target eq 'web') {
456: my $args='';
457: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
458: if ($args eq '') {
459: &Apache::lonxml::get_all_text("/accessrule",$parser);
460: } else {
461: $currentstring = $token->[4];
462: }
463: }
464: if ($target eq 'meta') {
465: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
466: }
467: return $currentstring;
468: }
469:
470: sub end_accessrule {
471: my ($target,$token,$tagstack,$parstack,$parser) = @_;
472: my $currentstring = '';
473: if ($target eq 'web') {
474: my $args='';
475: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
476: if ($args ne '') {
477: $currentstring = $token->[4];
478: }
479: }
480: return $currentstring;
481: }
482:
483: #-- <body> tag (end tag required)
484: sub start_body {
485: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
486: my $currentstring = '';
487:
488: if ($target eq 'web') {
489: if ($Apache::lonhomework::parsing_a_problem) {
490: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
491: return '';
492: }
493: if (!$Apache::lonxml::registered &&
494: $env{'request.state'} eq 'published') {
495: $currentstring.='<head>'.
496: &Apache::lonmenu::registerurl(undef,$target).'</head>';
497: }
498: # Accessibility
499: if ($env{'browser.imagesuppress'} eq 'on') {
500: delete($token->[2]->{'background'});
501: }
502: if ($env{'browser.fontenhance'} eq 'on') {
503: my $style='';
504: foreach my $key (keys(%{$token->[2]})) {
505: if ($key =~ /^style$/i) {
506: $style.=$token->[2]->{$key}.';';
507: delete($token->[2]->{$key});
508: }
509: }
510: $token->[2]->{'style'}=$style.'; font-size: x-large;';
511: }
512: if ($env{'browser.blackwhite'} eq 'on') {
513: delete($token->[2]->{'font'});
514: delete($token->[2]->{'link'});
515: delete($token->[2]->{'alink'});
516: delete($token->[2]->{'vlink'});
517: delete($token->[2]->{'bgcolor'});
518: delete($token->[2]->{'background'});
519: }
520: # Overload loads
521: my $onLoad='';
522: foreach my $key (keys(%{$token->[2]})) {
523: if ($key =~ /^onload$/i) {
524: $onLoad.=$token->[2]->{$key}.';';
525: delete($token->[2]->{$key});
526: }
527: }
528: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
529: my $onUnload='';
530: foreach my $key (keys(%{$token->[2]})) {
531: if ($key =~ /^onunload$/i) {
532: $onUnload.=$token->[2]->{$key}.';';
533: delete($token->[2]->{$key});
534: }
535: }
536: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
537: ';'.$onUnload;
538:
539: $currentstring .= '<'.$token->[1];
540: foreach (keys %{$token->[2]}) {
541: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
542: }
543: $currentstring.='>';
544: &Apache::lontexconvert::jsMath_reset();
545: if ($env{'environment.texengine'} eq 'jsMath') {
546: $currentstring.=&Apache::lontexconvert::jsMath_header();
547: }
548: if ($env{'request.state'} ne 'published') {
549: if ($env{'environment.remote'} eq 'off') {
550: $currentstring.=
551: &Apache::lonmenu::constspaceform().
552: &Apache::lonmenu::menubuttons(1,'web',1);
553: }
554: $currentstring.=(<<EDITBUTTON);
555: <form method="post">
556: <input type="submit" name="editmode" accesskey="e" value="Edit" />
557: </form>
558: EDITBUTTON
559: } else {
560: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
561: }
562: $currentstring.=&Apache::lonxml::message_location();
563: } elsif ($target eq 'tex') {
564: $currentstring = '\begin{document}';
565: }
566: return $currentstring;
567: }
568:
569: sub end_body {
570: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
571: my $currentstring = &end_p(); # Close off unclosed <p>
572: if ($target eq 'web') {
573: $currentstring .= &Apache::lonxml::xmlend($target,$parser);
574: } elsif ($target eq 'tex') {
575: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
576: }
577: return $currentstring;
578: }
579:
580: #-- <center> tag (end tag required)
581: sub start_center {
582: my ($target,$token) = @_;
583: my $currentstring = &end_p(); # Close off any prior para.
584: if ($target eq 'web') {
585: $currentstring .= $token->[4];
586: } elsif ($target eq 'tex') {
587: $currentstring .= '\begin{center}';
588: }
589: return $currentstring;
590: }
591:
592: sub end_center {
593: my ($target,$token) = @_;
594: my $currentstring = '';
595: if ($target eq 'web') {
596: $currentstring = $token->[2];
597: } elsif ($target eq 'tex') {
598: $currentstring = '\end{center}';
599: }
600: return $currentstring;
601: }
602:
603: #-- <b> tag (end tag required)
604: # NOTE: In TeX mode disables internal <p>
605: sub start_b {
606: my ($target,$token) = @_;
607: my $currentstring = '';
608: if ($target eq 'web') {
609: $currentstring = $token->[4];
610: } elsif ($target eq 'tex') {
611: &disable_para();
612: $currentstring .= '\textbf{';
613: }
614: return $currentstring;
615: }
616:
617: sub end_b {
618: my ($target,$token) = @_;
619: my $currentstring = '';
620: if ($target eq 'web') {
621: $currentstring = $token->[2];
622: } elsif ($target eq 'tex') {
623: &enable_para();
624: $currentstring = '}';
625: }
626: return $currentstring;
627: }
628:
629: #-- <strong> tag (end tag required)
630: # NOTE: in TeX mode disables internal <p>
631: sub start_strong {
632: my ($target,$token) = @_;
633: my $currentstring = '';
634: if ($target eq 'web') {
635: $currentstring = $token->[4];
636: } elsif ($target eq 'tex') {
637: &disable_para();
638: $currentstring = '\textbf{';
639: }
640: return $currentstring;
641: }
642:
643: sub end_strong {
644: my ($target,$token) = @_;
645: my $currentstring = '';
646: if ($target eq 'web') {
647: $currentstring = $token->[2];
648: } elsif ($target eq 'tex') {
649: &enable_para();
650: $currentstring = '}';
651: }
652: return $currentstring;
653: }
654:
655: #-- <h1> tag (end tag required)
656: sub start_h1 {
657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
658: my $currentstring = &end_p(); # Close off any prior para.
659: if ($target eq 'web') {
660: $currentstring .= $token->[4];
661: } elsif ($target eq 'tex') {
662: my $pre;
663: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
664: if ($align eq 'center') {
665: $pre='\begin{center}';
666: } elsif ($align eq 'left') {
667: $pre='\rlap{';
668: } elsif ($align eq 'right') {
669: $pre=' \hfill \llap{';
670: }
671: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
672: if (not defined $TeXsize) {$TeXsize="large";}
673: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
674: } elsif ($target eq 'meta') {
675: $currentstring.='<subject>';
676: &start_output($target);
677: }
678: return $currentstring;
679: }
680:
681: sub end_h1 {
682: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
683: my $currentstring = '';
684: if ($target eq 'web') {
685: $currentstring .= $token->[2];
686: } elsif ($target eq 'tex') {
687: my $post='\vskip 0 mm ';
688: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
689: if ($align eq 'center') {
690: $post='\end{center}';
691: } elsif ($align eq 'left') {
692: $post='} \hfill'.'\vskip 0 mm ';
693: } elsif ($align eq 'right') {
694: $post='}'.'\vskip 0 mm ';
695: }
696: $currentstring .= '}}'.$post;
697: } elsif ($target eq 'meta') {
698: &end_output($target);
699: $currentstring='</subject>';
700: }
701: return $currentstring;
702: }
703:
704: #-- <h2> tag
705: sub start_h2 {
706: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
707: my $currentstring = &end_p(); # Close off any prior para.
708: if ($target eq 'web') {
709: $currentstring .= $token->[4];
710: } elsif ($target eq 'tex') {
711: my $pre;
712: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
713: if ($align eq 'center') {
714: $pre='\begin{center}';
715: } elsif ($align eq 'left') {
716: $pre='\rlap{';
717: } elsif ($align eq 'right') {
718: $pre=' \hfill \llap{';
719: }
720: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
721: if (not defined $TeXsize) {$TeXsize="large";}
722: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
723: }
724: return $currentstring;
725: }
726:
727: sub end_h2 {
728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
729: my $currentstring = '';
730: if ($target eq 'web') {
731: $currentstring .= $token->[2];
732: } elsif ($target eq 'tex') {
733: my $post='\vskip 0 mm ';
734: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
735: if ($align eq 'center') {
736: $post='\end{center}';
737: } elsif ($align eq 'left') {
738: $post='} \hfill'.'\vskip 0 mm ';
739: } elsif ($align eq 'right') {
740: $post='}'.'\vskip 0 mm ';
741: }
742: $currentstring .= '}}'.$post;
743: }
744: return $currentstring;
745: }
746:
747: #-- <h3> tag
748: sub start_h3 {
749: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
750: my $currentstring = &end_p(); # Close off any prior para.
751: if ($target eq 'web') {
752: $currentstring .= $token->[4];
753: } elsif ($target eq 'tex') {
754: my $pre;
755: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
756: if ($align eq 'center') {
757: $pre='\begin{center}';
758: } elsif ($align eq 'left') {
759: $pre='\rlap{';
760: } elsif ($align eq 'right') {
761: $pre=' \hfill \llap{';
762: }
763: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
764: if (not defined $TeXsize) {$TeXsize="large";}
765: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
766: }
767: return $currentstring;
768: }
769:
770: sub end_h3 {
771: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
772: my $currentstring = '';
773: if ($target eq 'web') {
774: $currentstring .= $token->[2];
775: } elsif ($target eq 'tex') {
776: my $post='\vskip 0 mm ';
777: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
778: if ($align eq 'center') {
779: $post='\end{center}';
780: } elsif ($align eq 'left') {
781: $post='} \hfill'.'\vskip 0 mm ';
782: } elsif ($align eq 'right') {
783: $post='}'.'\vskip 0 mm ';
784: }
785: $currentstring .= '}}'.$post;
786: }
787: return $currentstring;
788: }
789:
790: #-- <h4> tag
791: sub start_h4 {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
793: my $currentstring = &end_p(); # Close off any prior para.
794: if ($target eq 'web') {
795: $currentstring .= $token->[4];
796: } elsif ($target eq 'tex') {
797: my $pre;
798: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
799: if ($align eq 'center') {
800: $pre='\begin{center}';
801: } elsif ($align eq 'left') {
802: $pre='\rlap{';
803: } elsif ($align eq 'right') {
804: $pre=' \hfill \llap{';
805: }
806: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
807: if (not defined $TeXsize) {$TeXsize="large";}
808: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
809: }
810: return $currentstring;
811: }
812:
813: sub end_h4 {
814: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
815: my $currentstring = '';
816: if ($target eq 'web') {
817: $currentstring .= $token->[2];
818: } elsif ($target eq 'tex') {
819: my $post='\vskip 0 mm ';
820: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
821: if ($align eq 'center') {
822: $post='\end{center}';
823: } elsif ($align eq 'left') {
824: $post='} \hfill'.'\vskip 0 mm ';
825: } elsif ($align eq 'right') {
826: $post='}'.'\vskip 0 mm ';
827: }
828: $currentstring .= '}}'.$post;
829: }
830: return $currentstring;
831: }
832:
833: #-- <h5> tag
834: sub start_h5 {
835: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
836: my $currentstring = &end_p(); # Close off any prior paras.
837: if ($target eq 'web') {
838: $currentstring .= $token->[4];
839: } elsif ($target eq 'tex') {
840: my $pre;
841: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
842: if ($align eq 'center') {
843: $pre='\begin{center}';
844: } elsif ($align eq 'left') {
845: $pre='\rlap{';
846: } elsif ($align eq 'right') {
847: $pre=' \hfill \llap{';
848: }
849: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
850: if (not defined $TeXsize) {$TeXsize="large";}
851: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
852: }
853: return $currentstring;
854: }
855:
856: sub end_h5 {
857: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
858: my $currentstring = '';
859: if ($target eq 'web') {
860: $currentstring .= $token->[2];
861: } elsif ($target eq 'tex') {
862: my $post='\vskip 0 mm ';
863: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
864: if ($align eq 'center') {
865: $post='\end{center}';
866: } elsif ($align eq 'left') {
867: $post='} \hfill'.'\vskip 0 mm ';
868: } elsif ($align eq 'right') {
869: $post='}'.'\vskip 0 mm ';
870: }
871: $currentstring .= '}}'.$post;
872: }
873: return $currentstring;
874: }
875:
876: #-- <h6> tag
877: sub start_h6 {
878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
879: my $currentstring = &end_p(); # Close off any prior paras.
880: if ($target eq 'web') {
881: $currentstring .= $token->[4];
882: } elsif ($target eq 'tex') {
883: my $pre;
884: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
885: if ($align eq 'center') {
886: $pre='\begin{center}';
887: } elsif ($align eq 'left') {
888: $pre='\rlap{';
889: } elsif ($align eq 'right') {
890: $pre=' \hfill \llap{';
891: }
892: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
893: if (not defined $TeXsize) {$TeXsize="large";}
894: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
895: }
896: return $currentstring;
897: }
898:
899: sub end_h6 {
900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
901: my $currentstring = '';
902: if ($target eq 'web') {
903: $currentstring .= $token->[2];
904: } elsif ($target eq 'tex') {
905: my $post='\vskip 0 mm ';
906: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
907: if ($align eq 'center') {
908: $post='\end{center}';
909: } elsif ($align eq 'left') {
910: $post='} \hfill'.'\vskip 0 mm ';
911: } elsif ($align eq 'right') {
912: $post='}'.'\vskip 0 mm ';
913: }
914: $currentstring .= '}}'.$post;
915: }
916: return $currentstring;
917: }
918:
919: #--- <cite> tag (end tag required)
920: sub start_cite {
921: my ($target,$token) = @_;
922: my $currentstring = '';
923: if ($target eq 'web') {
924: $currentstring .= $token->[4];
925: } elsif ($target eq 'tex') {
926: $currentstring .= '\textit{';
927: }
928: return $currentstring;
929: }
930:
931: sub end_cite {
932: my ($target,$token) = @_;
933: my $currentstring = '';
934: if ($target eq 'web') {
935: $currentstring .= $token->[2];
936: } elsif ($target eq 'tex') {
937: $currentstring .= '}';
938: }
939: return $currentstring;
940: }
941:
942: #-- <i> tag (end tag required)
943: sub start_i {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web') {
947: $currentstring .= $token->[4];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '\textit{';
950: }
951: return $currentstring;
952: }
953:
954: sub end_i {
955: my ($target,$token) = @_;
956: my $currentstring = '';
957: if ($target eq 'web') {
958: $currentstring .= $token->[2];
959: } elsif ($target eq 'tex') {
960: $currentstring .= '}';
961: }
962: return $currentstring;
963: }
964:
965: #-- <address> tag (end tag required)
966: sub start_address {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web') {
970: $currentstring .= $token->[4];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '\textit{';
973: }
974: return $currentstring;
975: }
976:
977: sub end_address {
978: my ($target,$token) = @_;
979: my $currentstring = '';
980: if ($target eq 'web') {
981: $currentstring .= $token->[2];
982: } elsif ($target eq 'tex') {
983: $currentstring .= '}';
984: }
985: return $currentstring;
986: }
987:
988: #-- <dfn> tag (end tag required)
989: sub start_dfn {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web') {
993: $currentstring .= $token->[4];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '\textit{';
996: }
997: return $currentstring;
998: }
999:
1000: sub end_dfn {
1001: my ($target,$token) = @_;
1002: my $currentstring = '';
1003: if ($target eq 'web') {
1004: $currentstring .= $token->[2];
1005: } elsif ($target eq 'tex') {
1006: $currentstring .= '}';
1007: }
1008: return $currentstring;
1009: }
1010:
1011: #-- <tt> tag (end tag required)
1012: sub start_tt {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web') {
1016: $currentstring .= $token->[4];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '\texttt{';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: sub end_tt {
1024: my ($target,$token) = @_;
1025: my $currentstring = '';
1026: if ($target eq 'web') {
1027: $currentstring .= $token->[2];
1028: } elsif ($target eq 'tex') {
1029: $currentstring .= '}';
1030: }
1031: return $currentstring;
1032: }
1033:
1034: #-- <kbd> tag (end tag required)
1035: sub start_kbd {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web') {
1039: $currentstring .= $token->[4];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '\texttt{';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: sub end_kbd {
1047: my ($target,$token) = @_;
1048: my $currentstring = '';
1049: if ($target eq 'web') {
1050: $currentstring .= $token->[2];
1051: } elsif ($target eq 'tex') {
1052: $currentstring .= '}';
1053: }
1054: return $currentstring;
1055: }
1056:
1057: #-- <code> tag (end tag required)
1058: sub start_code {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web') {
1062: $currentstring .= $token->[4];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '\texttt{';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: sub end_code {
1070: my ($target,$token) = @_;
1071: my $currentstring = '';
1072: if ($target eq 'web') {
1073: $currentstring .= $token->[2];
1074: } elsif ($target eq 'tex') {
1075: $currentstring .= '}';
1076: }
1077: return $currentstring;
1078: }
1079:
1080: #-- <em> tag (end tag required)
1081: sub start_em {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web') {
1085: $currentstring .= $token->[4];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '\emph{';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: sub end_em {
1093: my ($target,$token) = @_;
1094: my $currentstring = '';
1095: if ($target eq 'web') {
1096: $currentstring .= $token->[2];
1097: } elsif ($target eq 'tex') {
1098: $currentstring .= '}';
1099: }
1100: return $currentstring;
1101: }
1102:
1103: #-- <q> tag (end tag required)
1104: sub start_q {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web') {
1108: $currentstring .= $token->[4];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '\emph{';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: sub end_q {
1116: my ($target,$token) = @_;
1117: my $currentstring = '';
1118: if ($target eq 'web') {
1119: $currentstring .= $token->[2];
1120: } elsif ($target eq 'tex') {
1121: $currentstring .= '}';
1122: }
1123: return $currentstring;
1124: }
1125:
1126: # <p> is a bit strange since it does not require a closing </p>
1127: # However in latex, we must often output closing stuff to end
1128: # environments and {}'s etc. Therefore we do all the work
1129: # of figuring out the ending strings in the start tag processing,
1130: # and provide a mechanism to output the stop text external
1131: # to tag processing.
1132: #
1133: {
1134:
1135: my $closing_string = ''; # String required to close <p>
1136:
1137: # Some tags are <p> fragile meaning that <p> inside of them
1138: # does not work within TeX mode. This is managed via the
1139: # counter below:
1140: #
1141:
1142: my $para_disabled = 0;
1143:
1144: sub disable_para {
1145: $para_disabled++;
1146: }
1147: sub enable_para {
1148: $para_disabled--;
1149: }
1150:
1151:
1152: #-- <p> tag (end tag optional)
1153: #optional attribute - align="center|left|right"
1154: sub start_p {
1155: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1156: my $currentstring = '';
1157: if ($target eq 'web') {
1158: $currentstring .= &end_p(); # close off prior para if in progress.
1159: $currentstring .= $token->[4];
1160: if (! ($currentstring =~ /\//)) {
1161: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1162: }
1163: } elsif ($target eq 'tex' && !$para_disabled) {
1164: $currentstring .= &end_p(); # close off prior para if in progress.
1165: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1166: if ($align eq 'center') {
1167: $currentstring .='\begin{center}\par';
1168: $closing_string = '\end{center}';
1169: } elsif ($align eq 'right') {
1170: $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1171: $closing_string= '}}';
1172: } elsif ($align eq 'left') {
1173: $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
1174: $closing_string = '}\hfill}';
1175: } else {
1176: $currentstring.='\par ';
1177: $closing_string = '\strut\\\\\strut ';
1178: }
1179:
1180: }
1181: return $currentstring;
1182: }
1183: #
1184: # End paragraph processing just requires that we output the
1185: # closing string that was saved and blank it.
1186: sub end_p {
1187: # Note only 'tex' mode uses disable_para and enable_para
1188: # so we don't need to know the target in the check below:
1189:
1190: if (!$para_disabled) {
1191: my $current_string = $closing_string;
1192: $closing_string = ''; # Not in a para anymore.
1193: return $current_string;
1194: } else {
1195: return '';
1196: }
1197:
1198: }
1199: }
1200: #-- <br> tag (end tag forbidden)
1201: sub start_br {
1202: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1203: my $currentstring = '';
1204: if ($target eq 'web') {
1205: $currentstring .= $token->[4];
1206: } elsif ($target eq 'tex') {
1207: my @tempo=@$tagstack;
1208: my $signal=0;
1209: for (my $i=$#tempo;$i>=0;$i--) {
1210: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1211: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1212: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1213: $signal=1;
1214: last;
1215: }
1216: }
1217: if ($signal) {
1218: $currentstring .= ' \vskip 0 mm ';
1219: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1220: $currentstring .= '\strut \\\\ \strut ';
1221: }
1222: }
1223: return $currentstring;
1224: }
1225:
1226: sub end_br {
1227: my ($target,$token) = @_;
1228: my $currentstring = '';
1229: if ($target eq 'web') {
1230: $currentstring .= $token->[2];
1231: }
1232: return $currentstring;
1233: }
1234:
1235: #-- <big> tag (end tag required)
1236: sub start_big {
1237: my ($target,$token) = @_;
1238: my $currentstring = '';
1239: if ($target eq 'web') {
1240: $currentstring .= $token->[4];
1241: } elsif ($target eq 'tex') {
1242: $currentstring .= '{\large ';
1243: }
1244: return $currentstring;
1245: }
1246:
1247: sub end_big {
1248: my ($target,$token) = @_;
1249: my $currentstring = '';
1250: if ($target eq 'web') {
1251: $currentstring .= $token->[2];
1252: } elsif ($target eq 'tex') {
1253: $currentstring .= '}';
1254: }
1255: return $currentstring;
1256: }
1257:
1258: #-- <small> tag (end tag required)
1259: sub start_small {
1260: my ($target,$token) = @_;
1261: my $currentstring = '';
1262: if ($target eq 'web') {
1263: $currentstring .= $token->[4];
1264: } elsif ($target eq 'tex') {
1265: $currentstring .= '{\footnotesize ';
1266: }
1267: return $currentstring;
1268: }
1269:
1270: sub end_small {
1271: my ($target,$token) = @_;
1272: my $currentstring = '';
1273: if ($target eq 'web') {
1274: $currentstring .= $token->[2];
1275: } elsif ($target eq 'tex') {
1276: $currentstring .= '}';
1277: }
1278: return $currentstring;
1279: }
1280:
1281: #-- <basefont> tag (end tag forbidden)
1282: sub start_basefont {
1283: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1284: my $currentstring = '';
1285: if ($target eq 'web') {
1286: $currentstring = $token->[4];
1287: } elsif ($target eq 'tex') {
1288: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1289: if (defined $basesize) {
1290: $currentstring = '{\\'.$basesize.' ';
1291: }
1292: }
1293: return $currentstring;
1294: }
1295:
1296: sub end_basefont {
1297: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1298: my $currentstring = '';
1299: if ($target eq 'web') {
1300: $currentstring = $token->[4];
1301: } elsif ($target eq 'tex') {
1302: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1303: if (defined $basesize) {
1304: $currentstring = '}';
1305: }
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <font> tag (end tag required)
1311: sub start_font {
1312: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1313: my $currentstring = '';
1314: if ($target eq 'web') {
1315: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1316: if ($face!~/symbol/i) {
1317: if (($env{'browser.fontenhance'} eq 'on') ||
1318: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1319: }
1320: $currentstring = $token->[4];
1321: } elsif ($target eq 'tex') {
1322: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1323: if (defined $fontsize) {
1324: $currentstring = '{\\'.$fontsize.' ';
1325: }
1326: }
1327: return $currentstring;
1328: }
1329:
1330: sub end_font {
1331: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1332: my $currentstring = '';
1333: if ($target eq 'web') {
1334: $currentstring = $token->[2];
1335: } elsif ($target eq 'tex') {
1336: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1337: if (defined $fontsize) {
1338: $currentstring = '}';
1339: }
1340: }
1341: return $currentstring;
1342: }
1343:
1344: #-- <strike> tag (end tag required)
1345: sub start_strike {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web') {
1349: $currentstring .= $token->[4];
1350: } elsif ($target eq 'tex') {
1351: &Apache::lonxml::startredirection();
1352: }
1353: return $currentstring;
1354: }
1355:
1356: sub end_strike {
1357: my ($target,$token) = @_;
1358: my $currentstring = '';
1359: if ($target eq 'web') {
1360: $currentstring .= $token->[2];
1361: } elsif ($target eq 'tex') {
1362: $currentstring=&Apache::lonxml::endredirection();
1363: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1364: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1365: $currentstring=~s/(\S)\s*$/$1\}/;
1366: }
1367: return $currentstring;
1368: }
1369:
1370: #-- <s> tag (end tag required)
1371: sub start_s {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web') {
1375: $currentstring .= $token->[4];
1376: } elsif ($target eq 'tex') {
1377: &Apache::lonxml::startredirection();
1378: }
1379: return $currentstring;
1380: }
1381:
1382: sub end_s {
1383: my ($target,$token) = @_;
1384: my $currentstring = '';
1385: if ($target eq 'web') {
1386: $currentstring .= $token->[2];
1387: } elsif ($target eq 'tex') {
1388: $currentstring=&Apache::lonxml::endredirection();
1389: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1390: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1391: $currentstring=~s/(\S)\s*$/$1\}/;
1392: }
1393: return $currentstring;
1394: }
1395:
1396: #-- <sub> tag (end tag required)
1397: sub start_sub {
1398: my ($target,$token) = @_;
1399: my $currentstring = '';
1400: if ($target eq 'web') {
1401: $currentstring .= $token->[4];
1402: } elsif ($target eq 'tex') {
1403: $currentstring .= '\ensuremath{_{';
1404: }
1405: return $currentstring;
1406: }
1407:
1408: sub end_sub {
1409: my ($target,$token) = @_;
1410: my $currentstring = '';
1411: if ($target eq 'web') {
1412: $currentstring .= $token->[2];
1413: } elsif ($target eq 'tex') {
1414: $currentstring .= '}}';
1415: }
1416: return $currentstring;
1417: }
1418:
1419: #-- <sup> tag (end tag required)
1420: sub start_sup {
1421: my ($target,$token) = @_;
1422: my $currentstring = '';
1423: if ($target eq 'web') {
1424: $currentstring .= $token->[4];
1425: } elsif ($target eq 'tex') {
1426: $currentstring .= '\ensuremath{^{';
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_sup {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web') {
1435: $currentstring .= $token->[2];
1436: } elsif ($target eq 'tex') {
1437: $currentstring .= '}}';
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <hr> tag (end tag forbidden)
1443: sub start_hr {
1444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1445: my $currentstring = &end_p(); # End enclosing para.
1446: if ($target eq 'web') {
1447: $currentstring .= $token->[4];
1448: } elsif ($target eq 'tex') {
1449: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1450: if (defined $LaTeXwidth) {
1451: if ($LaTeXwidth=~/^%/) {
1452: substr($LaTeXwidth,0,1)='';
1453: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1454: }
1455: } else {
1456: $LaTeXwidth ='0.9\textwidth';
1457: }
1458: my ($pre,$post);
1459: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1460: if (($align eq 'center') || (not defined $align)) {
1461: $pre=''; $post='';
1462: } elsif ($align eq 'left') {
1463: $pre='\rlap{'; $post='} \hfill';
1464: } elsif ($align eq 'right') {
1465: $pre=' \hfill \llap{'; $post='}';
1466: }
1467: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1468: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1469: }
1470: return $currentstring;
1471: }
1472:
1473: sub end_hr {
1474: my ($target,$token) = @_;
1475: my $currentstring = '';
1476: if ($target eq 'web') {
1477: $currentstring .= $token->[2];
1478: }
1479: return $currentstring;
1480: }
1481:
1482: #-- <div> tag (end tag required)
1483: {
1484:
1485: # Since div can be nested, the stack below is used
1486: # in 'tex' mode to store the ending strings
1487: # for the div stack.
1488:
1489: my @div_end_stack;
1490:
1491: sub start_div {
1492: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1493: my $currentstring = &end_p(); # Close enclosing para.
1494: if ($target eq 'web') {
1495: $currentstring .= $token->[4];
1496: }
1497: if ($target eq 'tex') {
1498: # 4 possible alignments: left, right, center, and -missing-.
1499:
1500: my $endstring = '';
1501:
1502: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1503: $safeeval, undef, 1));
1504: if ($align eq 'center') {
1505: $currentstring .= '\begin{center}';
1506: $endstring = '\end{center}';
1507: }
1508: elsif ($align eq 'right') {
1509: $currentstring .= '\begin{flushright}';
1510: $endstring .= '\end{flushright}';
1511: } elsif ($align eq 'left') {
1512: $currentstring .= '\begin{flushleft}';
1513: $endstring = '\end{flushleft}';
1514: } else {
1515:
1516: }
1517: $currentstring .= "\n"; # For human readability.
1518: $endstring = "\n$endstring\n"; # For human readability
1519: push(@div_end_stack, $endstring);
1520: }
1521: return $currentstring;
1522: }
1523:
1524: sub end_div {
1525: my ($target,$token) = @_;
1526: my $currentstring = '';
1527: if ($target eq 'web') {
1528: $currentstring .= $token->[2];
1529: }
1530: if ($target eq 'tex') {
1531: my $endstring = pop @div_end_stack;
1532: $currentstring .= $endstring;
1533: }
1534: return $currentstring;
1535: }
1536: }
1537:
1538: #-- <a> tag (end tag required)
1539: sub start_a {
1540: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1541: my $currentstring = '';
1542: if ($target eq 'web') {
1543: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1544: undef,1);
1545: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1546: } elsif ($target eq 'tex') {
1547: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1548: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1549: if ($a=~/\S/) {
1550: $a=~s/([^\\])%/$1\\\%/g;
1551: $currentstring .= '\ref{URI: '.$a.'}';
1552: } elsif ($b=~/\S/) {
1553: $currentstring .= '\ref{Anchor: '.$b.'}';
1554: } else {
1555: $currentstring.='';
1556: }
1557: }
1558: return $currentstring;
1559: }
1560:
1561: sub end_a {
1562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web') {
1565: $currentstring .= $token->[2];
1566: }
1567: return $currentstring;
1568: }
1569:
1570: #-- <li> tag (end tag optional)
1571: sub start_li {
1572: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1573: my $currentstring = '';
1574: if ($target eq 'web') {
1575: $currentstring = $token->[4];
1576: } elsif ($target eq 'tex') {
1577: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1578: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1579: #FIXME need to support types i and I
1580: if ($type=~/disc/) {
1581: $currentstring .= ' \item[$\bullet$] ';
1582: } elsif ($type=~/circle/) {
1583: $currentstring .= ' \item[$\circ$] ';
1584: } elsif ($type=~/square/) {
1585: $currentstring .= ' \item[$\diamond$] ';
1586: } elsif ($type eq '1') {
1587: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1588: } elsif ($type eq 'A') {
1589: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1590: } elsif ($type eq 'a') {
1591: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1592: } elsif ($value ne '') {
1593: $currentstring .= ' \item['.$value.'] ';
1594: } else {
1595: $currentstring .= ' \item ';
1596: }
1597: $Apache::londefdef::list_index++;
1598: }
1599: return $currentstring;
1600: }
1601:
1602: sub end_li {
1603: my ($target,$token) = @_;
1604: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1605: if ($target eq 'web') {
1606: $currentstring .= $token->[2];
1607: }
1608: return $currentstring;
1609: }
1610:
1611: #-- <u> tag (end tag required)
1612: sub start_u {
1613: my ($target,$token) = @_;
1614: my $currentstring = '';
1615: if ($target eq 'web') {
1616: $currentstring .= $token->[4];
1617: } elsif ($target eq 'tex') {
1618: &Apache::lonxml::startredirection();
1619: }
1620: return $currentstring;
1621: }
1622:
1623: sub end_u {
1624: my ($target,$token) = @_;
1625: my $currentstring = '';
1626: if ($target eq 'web') {
1627: $currentstring .= $token->[2];
1628: } elsif ($target eq 'tex') {
1629: $currentstring=&Apache::lonxml::endredirection();
1630: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1631: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1632: $currentstring=~s/(\S)\s*$/$1\}/;
1633: }
1634: return $currentstring;
1635: }
1636:
1637: #-- <ul> tag (end tag required)
1638: sub start_ul {
1639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1640: my $currentstring = &end_p(); # Close off enclosing list.
1641: if ($target eq 'web') {
1642: $currentstring .= $token->[4];
1643: } elsif ($target eq 'tex') {
1644: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1645: $Apache::londefdef::list_index=0;
1646: if ($TeXtype eq 'disc') {
1647: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1648: '\renewcommand{\labelitemii}{$\bullet$}'.
1649: '\renewcommand{\labelitemiii}{$\bullet$}'.
1650: '\renewcommand{\labelitemiv}{$\bullet$}';
1651: } elsif ($TeXtype eq 'circle') {
1652: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1653: '\renewcommand{\labelitemii}{$\circ$}'.
1654: '\renewcommand{\labelitemiii}{$\circ$}'.
1655: '\renewcommand{\labelitemiv}{$\circ$}';
1656: } elsif ($TeXtype eq 'square') {
1657: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1658: '\renewcommand{\labelitemii}{$\diamond$}'.
1659: '\renewcommand{\labelitemiii}{$\diamond$}'.
1660: '\renewcommand{\labelitemiv}{$\diamond$}';
1661: }
1662: $currentstring .= '\strut \begin{itemize}';
1663: }
1664: return $currentstring;
1665: }
1666:
1667: sub end_ul {
1668: my ($target,$token) = @_;
1669: my $currentstring = '';
1670: if ($target eq 'web') {
1671: $currentstring = $token->[2];
1672: } elsif ($target eq 'tex') {
1673: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1674: '\renewcommand{\labelitemii}{$\bullet$}'.
1675: '\renewcommand{\labelitemiii}{$\bullet$}'.
1676: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1677: }
1678: return $currentstring;
1679: }
1680:
1681: #-- <menu> tag (end tag required)
1682: sub start_menu {
1683: my ($target,$token) = @_;
1684: my $currentstring = '';
1685: if ($target eq 'web') {
1686: $currentstring = $token->[4];
1687: } elsif ($target eq 'tex') {
1688: $currentstring = " \\begin{itemize} ";
1689: }
1690: return $currentstring;
1691: }
1692:
1693: sub end_menu {
1694: my ($target,$token) = @_;
1695: my $currentstring = '';
1696: if ($target eq 'web') {
1697: $currentstring = $token->[2];
1698: } elsif ($target eq 'tex') {
1699: $currentstring = " \\end{itemize}";
1700: }
1701: return $currentstring;
1702: }
1703:
1704: #-- <dir> tag (end tag required)
1705: sub start_dir {
1706: my ($target,$token) = @_;
1707: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1708: if ($target eq 'web') {
1709: $currentstring .= $token->[4];
1710: } elsif ($target eq 'tex') {
1711: $currentstring .= " \\begin{itemize} ";
1712: }
1713: return $currentstring;
1714: }
1715:
1716: sub end_dir {
1717: my ($target,$token) = @_;
1718: my $currentstring = '';
1719: if ($target eq 'web') {
1720: $currentstring = $token->[2];
1721: } elsif ($target eq 'tex') {
1722: $currentstring = " \\end{itemize}";
1723: }
1724: return $currentstring;
1725: }
1726:
1727: #-- <ol> tag (end tag required)
1728: sub start_ol {
1729: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1730: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1731: if ($target eq 'web') {
1732: $currentstring .= $token->[4];
1733: } elsif ($target eq 'tex') {
1734: $Apache::londefdef::list_index=0;
1735: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1736: if ($type eq '1') {
1737: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1738: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1739: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1740: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1741: } elsif ($type eq 'A') {
1742: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1743: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1744: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1745: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1746: } elsif ($type eq 'a') {
1747: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1748: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1749: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1750: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1751: } elsif ($type eq 'i') {
1752: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1753: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1754: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1755: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1756: } elsif ($type eq 'I') {
1757: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1758: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1759: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1760: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1761: }
1762: $currentstring .= '\strut \begin{enumerate}';
1763: }
1764: return $currentstring;
1765: }
1766:
1767: sub end_ol {
1768: my ($target,$token) = @_;
1769: my $currentstring = '';
1770: if ($target eq 'web') {
1771: $currentstring = $token->[2];
1772: } elsif ($target eq 'tex') {
1773: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1774: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1775: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1776: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1777: }
1778: return $currentstring;
1779: }
1780:
1781: #-- <dl> tag (end tag required)
1782: sub start_dl {
1783: my ($target,$token) = @_;
1784: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1785: if ($target eq 'web') {
1786: $currentstring .= $token->[4];
1787: } elsif ($target eq 'tex') {
1788: $currentstring .= '\begin{description}';
1789: $Apache::londefdef::DL++;
1790: push(@Apache::londefdef::description,[]);
1791: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1792: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1793: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1794: }
1795: return $currentstring;
1796: }
1797:
1798: sub end_dl {
1799: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1800: my $currentstring = '';
1801: if ($target eq 'web') {
1802: $currentstring = $token->[2];
1803: } elsif ($target eq 'tex') {
1804: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1805: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1806: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1807: $currentstring.=' '.$element.' ';
1808: }
1809: pop(@Apache::londefdef::description);
1810: $currentstring.='\end{description}';
1811: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1812: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1813: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1814: $Apache::londefdef::DL--;
1815: }
1816: return $currentstring;
1817: }
1818:
1819: #-- <dt> tag (end tag optional)
1820: sub start_dt {
1821: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1822: my $currentstring='';
1823: if ($target eq 'web') {
1824: $currentstring = $token->[4];
1825: } elsif ($target eq 'tex') {
1826: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1827: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1828: &Apache::lonxml::startredirection();
1829: $Apache::londefdef::DT[-1]++;
1830: $Apache::londefdef::seenDT[-1]=1;
1831: }
1832: return $currentstring;
1833: }
1834:
1835: sub end_dt {
1836: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1837: my $currentstring = '';
1838: if ($target eq 'web') {
1839: $currentstring = $token->[2];
1840: } elsif ($target eq 'tex') {
1841: if ($Apache::londefdef::DT[-1]) {
1842: my $data=&item_cleanup();
1843: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1844: $Apache::londefdef::DT[-1]--;
1845: }
1846: }
1847: return $currentstring;
1848: }
1849:
1850: sub item_cleanup {
1851: my $item=&Apache::lonxml::endredirection();
1852: $item=~s/\\begin{center}//g;
1853: $item=~s/\\end{center}//g;
1854: return $item;
1855: }
1856:
1857: #-- <dd> tag (end tag optional)
1858: sub start_dd {
1859: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1860: my $currentstring = '';
1861: if ($target eq 'web') {
1862: $currentstring = $token->[4];
1863: } elsif ($target eq 'tex') {
1864: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1865: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1866: if (!$Apache::londefdef::seenDT[-1]) {
1867: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1868: }
1869: push(@{$Apache::londefdef::description[-1]},'');
1870: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1871: $Apache::londefdef::DD[-1]++;
1872: &Apache::lonxml::startredirection();
1873: }
1874: return $currentstring;
1875: }
1876:
1877: sub end_dd {
1878: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1879: my $currentstring = '';
1880: if ($target eq 'web') {
1881: $currentstring = $token->[2];
1882: } elsif ($target eq 'tex') {
1883: $Apache::londefdef::description[-1]->[-1].=
1884: &Apache::lonxml::endredirection().' \vskip 0mm ';
1885: $Apache::londefdef::DD[-1]--;
1886: }
1887: return $currentstring;
1888: }
1889:
1890: #-- <table> tag (end tag required)
1891: # <table> also ends any prior <p> that is not closed.
1892: # but, unless I allow <p>'s to nest, that's the
1893: # only way I could think of to allow <p> in
1894: # <tr> <th> bodies
1895: #
1896: #list of supported attributes: border,width,TeXwidth
1897: sub start_table {
1898: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1899: my $textwidth = '';
1900: my $currentstring = &end_p();
1901: if ($target eq 'web') {
1902: $currentstring .= $token->[4];
1903: } elsif ($target eq 'tex') {
1904: my $aa = {};
1905: push @Apache::londefdef::table, $aa;
1906: $Apache::londefdef::table[-1]{'row_number'} = -1;
1907: #maximum table's width (default coincides with text line length)
1908: if ($#Apache::londefdef::table==0) {
1909: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1910: $textwidth=~/(\d+\.?\d*)/;
1911: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1912: } else {
1913: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1914: #the maximum width of nested table is determined by LATeX width of parent cell
1915: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1916: } else {
1917: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1918: $textwidth=$Apache::londefdef::table[-2]{'width'};
1919: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1920: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1921: }
1922: }
1923: }
1924: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1925: if (not defined $TeXwidth) {
1926: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
1927: if ($htmlwidth=~/%/) {
1928: $Apache::londefdef::table[-1]{'percent'}=1;
1929: $htmlwidth=~/(\d+)/;
1930: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
1931: } else {
1932: $Apache::londefdef::table[-1]{'width'}=$textwidth;
1933: }
1934: } elsif ($TeXwidth=~/%/) {
1935: $Apache::londefdef::table[-1]{'percent'}=1;
1936: $TeXwidth=~/(\d+)/;
1937: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1938: } else {
1939: $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
1940: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1941: }
1942: #table's border
1943: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1944: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1945: unless (defined $border) { $border = 0; }
1946: if ($border) {
1947: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1948: $Apache::londefdef::table[-1]{'vinc'} = '&';
1949: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1950: } else {
1951: $Apache::londefdef::table[-1]{'hinc'} = '';
1952: $Apache::londefdef::table[-1]{'vinc'} = '&';
1953: $Apache::londefdef::table[-1]{'vvinc'} = '';
1954: }
1955: if ($#Apache::londefdef::table==0) {
1956: # Note that \newline seems to destroy the alignment envs.
1957: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1958: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
1959: }
1960: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1961: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1962: $Apache::londefdef::table[-1]{'objectlen'}=[];
1963: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1964: $Apache::londefdef::table[-1]{'maxlen'}=[];
1965: $Apache::londefdef::table[-1]{'minlen'}=[];
1966: $Apache::londefdef::table[-1]{'content'}=[];
1967: $Apache::londefdef::table[-1]{'align'}=[];
1968: $currentstring.='\keephidden{NEW TABLE ENTRY}';
1969: }
1970: return $currentstring;
1971: }
1972:
1973: sub end_table {
1974: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1975: my $currentstring = '';
1976: if ($target eq 'web') {
1977: $currentstring = $token->[2];
1978: } elsif ($target eq 'tex') {
1979: my $inmemory = '';
1980: my $output = '';
1981: my $WARNING='';
1982: #width of columns from TeXwidth attributes
1983: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
1984: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1985: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
1986: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
1987: }
1988: }
1989: }
1990: #free space and number of empty columns
1991: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
1992: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
1993: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
1994: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
1995: $empty_columns++;
1996: } else {
1997: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
1998: }
1999: }
2000: #boundaries for contents columns
2001: my @min_len=();#columns can not be narrower
2002: my @max_len=();#maximum length of column
2003: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2004: my ($localmin,$localmax)=(0,0);
2005: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2006: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2007: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2008: }
2009: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2010: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2011: }
2012: }
2013: push @min_len, $localmin;
2014: push @max_len, $localmax;
2015: }
2016: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2017: my $localmin=0,;
2018: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2019: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2020: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2021: }
2022: }
2023: if ($max_len[$jn]<$localmin) {
2024: $max_len[$jn]=$localmin;
2025: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2026: }#object size is bigger
2027: if ($min_len[$jn]<$localmin) {
2028: $min_len[$jn]=$localmin;
2029: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2030: }#object size is bigger
2031: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2032: $min_len[$jn]=0;
2033: $max_len[$jn]=0;
2034: }
2035: }
2036: #final adjustment of column width
2037: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2038: my @adjust=();
2039: #step 1. adjustment by maximum value
2040: my $space_neeeded=0;
2041: for (my $jn=0;$jn<=$#max_len;$jn++) {
2042: $space_neeeded=$space_neeeded+$max_len[$jn];
2043: }
2044: if ($space_neeeded<=$available_space) {
2045: for (my $jn=0;$jn<=$#max_len;$jn++) {
2046: if ($fwidth[$jn]==0) {
2047: $fwidth[$jn]=$max_len[$jn];
2048: }
2049: }
2050: } else {
2051: #step 2. adjustment by minimum value (estimation)
2052: $space_neeeded=0;
2053: for (my $jn=0;$jn<=$#min_len;$jn++) {
2054: $space_neeeded+=$min_len[$jn];
2055: }
2056: if ($space_neeeded>$available_space) {
2057: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2058: for (my $jn=0;$jn<=$#max_len;$jn++) {
2059: if ($fwidth[$jn]==0) {
2060: $fwidth[$jn]=$min_len[$jn];
2061: }
2062: }
2063: #check if we have objects which can be scaled
2064: my $how_many_to_scale=0;
2065: my @to_scale=();
2066: for (my $jn=0;$jn<=$#max_len;$jn++) {
2067: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2068: $how_many_to_scale++;
2069: push @to_scale, $jn;
2070: }
2071: }
2072: if ($how_many_to_scale>0) {
2073: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2074: foreach my $jn (@to_scale) {
2075: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2076: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2077: if ($1 ne '') {
2078: my $current_length=&recalc($1);
2079: $current_length=~/(\d+\.?\d*)/;
2080: $current_length=$current_length-$space_to_adjust;
2081: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2082: }
2083: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2084: if ($1 ne '') {
2085: my $current_length=$1;
2086: $current_length=$current_length-$space_to_adjust;
2087: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2088: }
2089: }
2090: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2091: }
2092: }
2093: } else {
2094: #step 3. adjustment over minimal + corrections
2095: my $enlarge_coef=$available_space/$space_neeeded;
2096: my $acsessive=0;
2097: for (my $jn=0;$jn<=$#min_len;$jn++) {
2098: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2099: if ($adjust[$jn]>$max_len[$jn]) {
2100: $fwidth[$jn]=$max_len[$jn];
2101: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2102: $adjust[$jn]=0;
2103: }
2104: }
2105: if ($acsessive>0) {
2106: #we have an excess of space and can redistribute it
2107: my $notempty_columns=0;
2108: for (my $jn=0;$jn<=$#min_len;$jn++) {
2109: if ($adjust[$jn]!=0) {
2110: $notempty_columns++;
2111: }
2112: }
2113: my $per_column=$acsessive/$notempty_columns;
2114: for (my $jn=0;$jn<=$#min_len;$jn++) {
2115: if ($adjust[$jn]!=0) {
2116: $adjust[$jn]+=$per_column;
2117: $fwidth[$jn]=$adjust[$jn];
2118: }
2119: }
2120: } else {
2121: for (my $jn=0;$jn<=$#min_len;$jn++) {
2122: $fwidth[$jn]=$adjust[$jn];
2123: }
2124: }
2125: }
2126: }
2127: #use all available width if it is defined in % or as TeXwidth
2128: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2129: my $current=0;
2130: for (my $i=0;$i<=$#fwidth;$i++) {
2131: $current+=$fwidth[$i];
2132: }
2133: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2134: for (my $i=0;$i<=$#fwidth;$i++) {
2135: $fwidth[$i]*=$coef;
2136: }
2137: }
2138: #removing of empty columns if allowed
2139: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2140: if ($permission eq 'yes') {
2141: my @cleaned_table=();
2142: my @cleaned_header=();
2143: my $colind=0;
2144: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2145: if ($fwidth[$jn]!=0) {
2146: #we need to copy column
2147: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2148: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2149: $cleaned_header[$colind]=$fwidth[$jn];
2150: }
2151: $colind++;
2152: }
2153: }
2154: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2155: @fwidth=@cleaned_header;
2156: }
2157: #construct header of the table
2158: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2159: for (my $in=0;$in<=$#fwidth;$in++) {
2160: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2161: }
2162: $header_of_table .= '}';
2163: #fill the table
2164: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2165: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2166: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2167: $output.='\vspace*{-6 mm}\begin{center}';
2168: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2169: $output.=' \hfill \llap{'
2170: }
2171: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2172: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2173: $output.='\end{center}\vspace*{-6 mm}';
2174: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2175: $output.='} ';
2176: }
2177: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2178: }
2179: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2180: }
2181: # Note that \newline destroys alignment env's produced by e.g. <div>
2182: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2183: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2184: if ($#Apache::londefdef::table > 0) {
2185: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2186: pop @Apache::londefdef::table;
2187: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2188: } else {
2189: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2190: pop @Apache::londefdef::table;
2191: undef @Apache::londefdef::table;
2192: }
2193: }
2194: return $currentstring;
2195: }
2196:
2197: #-- <tr> tag (end tag optional)
2198: sub start_tr {
2199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2200: my $currentstring = '';
2201: if ($target eq 'web') {
2202: $currentstring = $token->[4];
2203: } elsif ($target eq 'tex') {
2204: $Apache::londefdef::table[-1]{'row_number'}++;
2205: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2206: if ($alignchar ne '') {
2207: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2208: } else {
2209: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2210: }
2211: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2212: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2213: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2214: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2215: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2216: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2217: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2218: }
2219: return $currentstring;
2220: }
2221:
2222: sub end_tr {
2223: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2224: my $currentstring = &end_p(); # Close any pending <p> in the row.
2225: if ($target eq 'web') {
2226: $currentstring .= $token->[2];
2227: } elsif ($target eq 'tex') {
2228: if ($Apache::londefdef::TD_redirection) {
2229: &end_td_tex($parstack,$parser,$safeeval);
2230: }
2231: }
2232: return $currentstring;
2233: }
2234:
2235: #-- <td> tag (end tag optional)
2236: sub start_td {
2237: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2238: my $currentstring = '';
2239: if ($target eq 'web') {
2240: $currentstring = $token->[4];
2241: } elsif ($target eq 'tex') {
2242: $Apache::londefdef::TD_redirection = 1;
2243: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2244: }
2245: return $currentstring;
2246: }
2247:
2248: sub tag_check {
2249: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2250: my @ar=@$parstack;
2251: for (my $i=$#ar-1;$i>=0;$i--) {
2252: if (lc($$tagstack[$i]) eq $good_tag) {
2253: &start_td_tex($parstack,$parser,$safeeval);
2254: last;
2255: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2256: splice @ar, $i+1;
2257: &end_td_tex(\@ar,$parser,$safeeval);
2258: &start_td_tex($parstack,$parser,$safeeval);
2259: last;
2260: }
2261: }
2262: return '';
2263: }
2264:
2265: sub start_td_tex {
2266: my ($parstack,$parser,$safeeval) = @_;
2267: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2268: if ($alignchar eq '') {
2269: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2270: }
2271: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2272: $Apache::londefdef::table[-1]{'counter_columns'}++;
2273: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2274: if (defined $TeXwidth) {
2275: my $current_length=&recalc($TeXwidth);
2276: $current_length=~/(\d+\.?\d*)/;
2277: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2278: }
2279: &Apache::lonxml::startredirection();
2280: return '';
2281: }
2282:
2283: sub end_td_tex {
2284: my ($parstack,$parser,$safeeval) = @_;
2285: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2286: my $data=&Apache::lonxml::endredirection();
2287: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2288: if (defined $TeXwidth) {
2289: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2290: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2291: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2292: } else {
2293: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2294: my $garbage_data=$data;
2295: my $fwidth=0;
2296: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2297: my $current_length=&recalc($1);
2298: $current_length=~/(\d+\.?\d*)/;
2299: if ($fwidth<$1) {$fwidth=$1;}
2300: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2301: }
2302: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2303: my $current_length=$1;
2304: if ($fwidth<$current_length) {$fwidth=$current_length;}
2305: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2306: }
2307: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2308: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2309: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2310: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2311: } elsif ($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)*/) {
2312: my $garbage_data=$data;
2313: my $fwidth=0;
2314: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2315: my $current_length=&recalc($1);
2316: $current_length=~/(\d+\.?\d*)/;
2317: if ($fwidth<$1) {$fwidth=$1;}
2318: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2319: }
2320: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2321: my $current_length=&recalc($1);
2322: $current_length=~/(\d+\.?\d*)/;
2323: if ($fwidth<$1) {$fwidth=$1;}
2324: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2325: }
2326: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2327: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2328: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2329: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2330: $data=~s/\\\\\s*$//;
2331: } else {
2332: $data=~s/^\s+(\S.*)/$1/;
2333: $data=~s/(.*\S)\s+$/$1/;
2334: $data=~s/(\s)+/$1/;
2335: my ($current_length,$min_length)=(0,0);
2336: if ($data=~/\\vskip/) {
2337: my $newdata=$data;
2338: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2339: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2340: foreach my $elementdata (@newdata) {
2341: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2342: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2343: my @words=split(/ /,$elementdata);
2344: foreach my $word (@words) {
2345: my $lengthword=2.5*&LATEX_length($word);
2346: if ($min_length<$lengthword) {$min_length=$lengthword;}
2347: }
2348: }
2349: } else {
2350: $current_length=2.5*&LATEX_length($data);
2351: my @words=split(/ /,$data);
2352: foreach my $word (@words) {
2353: my $lengthword=2*&LATEX_length($word);
2354: if ($min_length<$lengthword) {$min_length=$lengthword;}
2355: }
2356: }
2357: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2358: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2359: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2360: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2361: }
2362: }
2363: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2364: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2365: }
2366: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2367: return'';
2368: }
2369:
2370: sub end_td {
2371: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2372: my $currentstring = '';
2373: if ($target eq 'web') {
2374: $currentstring = $token->[2];
2375: } elsif ($target eq 'tex') {
2376: $Apache::londefdef::TD_redirection =0;
2377: &end_td_tex($parstack,$parser,$safeeval);
2378: }
2379: return $currentstring;
2380: }
2381:
2382: #-- <th> tag (end tag optional)
2383: sub start_th {
2384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2385: my $currentstring = '';
2386: if ($target eq 'web') {
2387: $currentstring = $token->[4];
2388: } elsif ($target eq 'tex') {
2389: $Apache::londefdef::TD_redirection = 1;
2390: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2391: }
2392: return $currentstring;
2393: }
2394:
2395: sub tagg_check {
2396: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2397: my @ar=@$parstack;
2398: for (my $i=$#ar-1;$i>=0;$i--) {
2399: if (lc($$tagstack[$i]) eq $good_tag) {
2400: &start_th_tex($parstack,$parser,$safeeval);
2401: last;
2402: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2403: splice @ar, $i+1;
2404: &end_th_tex(\@ar,$parser,$safeeval);
2405: &start_th_tex($parstack,$parser,$safeeval);
2406: last;
2407: }
2408: }
2409: return '';
2410: }
2411:
2412: sub start_th_tex {
2413: my ($parstack,$parser,$safeeval) = @_;
2414: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2415: if ($alignchar eq '') {
2416: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2417: }
2418: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2419: $Apache::londefdef::table[-1]{'counter_columns'}++;
2420: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2421: if (defined $TeXwidth) {
2422: my $current_length=&recalc($TeXwidth);
2423: $current_length=~/(\d+\.?\d*)/;
2424: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2425: }
2426: &Apache::lonxml::startredirection();
2427: return '';
2428: }
2429:
2430: sub end_th_tex {
2431: my ($parstack,$parser,$safeeval) = @_;
2432: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2433: my $data=&Apache::lonxml::endredirection();
2434: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2435: if (defined $TeXwidth) {
2436: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2437: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2438: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2439: } else {
2440: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2441: my $garbage_data=$data;
2442: my $fwidth=0;
2443: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2444: my $current_length=&recalc($1);
2445: $current_length=~/(\d+\.?\d*)/;
2446: if ($fwidth<$1) {$fwidth=$1;}
2447: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2448: }
2449: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2450: my $current_length=$1;
2451: if ($fwidth<$current_length) {$fwidth=$current_length;}
2452: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2453: }
2454: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2455: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2456: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2457: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2458: } else {
2459: $data=~s/^\s+(\S.*)/$1/;
2460: $data=~s/(.*\S)\s+$/$1/;
2461: $data=~s/(\s)+/$1/;
2462: my ($current_length,$min_length)=(0,0);
2463: if ($data=~/\\vskip/) {
2464: my $newdata=$data;
2465: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2466: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2467: foreach my $elementdata (@newdata) {
2468: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2469: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2470: my @words=split(/ /,$elementdata);
2471: foreach my $word (@words) {
2472: my $lengthword=2.5*&LATEX_length($word);
2473: if ($min_length<$lengthword) {$min_length=$lengthword;}
2474: }
2475: }
2476: } else {
2477: $current_length=2.5*&LATEX_length($data);
2478: my @words=split(/ /,$data);
2479: foreach my $word (@words) {
2480: my $lengthword=2*&LATEX_length($word);
2481: if ($min_length<$lengthword) {$min_length=$lengthword;}
2482: }
2483: }
2484: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2485: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2486: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2487: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2488: }
2489: }
2490: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2491: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2492: }
2493: #make data bold
2494: $data='\textbf{'.$data.'}';
2495: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2496: return'';
2497: }
2498:
2499: sub end_th {
2500: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2501: my $currentstring = &end_p(); # Close any open <p> in the row.
2502: if ($target eq 'web') {
2503: $currentstring .= $token->[2];
2504: } elsif ($target eq 'tex') {
2505: $Apache::londefdef::TD_redirection =0;
2506: &end_th_tex($parstack,$parser,$safeeval);
2507: }
2508: return $currentstring;
2509: }
2510:
2511: #-- <img> tag (end tag forbidden)
2512: #
2513: # Render the <IMG> tag.
2514: # <IMG> has the following attributes (in addition to the
2515: # standard HTML ones:
2516: # TeXwrap - Governs how the tex target will try to wrap text around
2517: # horizontally aligned images.
2518: # TeXwidth - The width of the image when rendered for print (mm).
2519: # TeXheight - The height of the image when rendered for print (mm)
2520: # (Note there seems to also be support for this as a % of page size)
2521: #
2522: sub start_img {
2523: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2524: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2525: undef,1);
2526: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2527: my $inside = &Apache::lonxml::get_all_text("/img",$parser);
2528: return '';
2529: }
2530: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2531: my $currentstring = '';
2532: my $scaling = .3;
2533:
2534: # Render unto browsers that which are the browser's...
2535:
2536: if ($target eq 'web') {
2537: if ($env{'browser.imagesuppress'} ne 'on') {
2538: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2539: } else {
2540: my $alttag= &Apache::lonxml::get_param
2541: ('alt',$parstack,$safeeval,undef,1);
2542: unless ($alttag) {
2543: $alttag=&Apache::lonmeta::alttag
2544: ($Apache::lonxml::pwd[-1],$src);
2545: }
2546: $currentstring.='[IMAGE: '.$alttag.']';
2547: }
2548:
2549: # and render unto TeX that which is LaTeX
2550:
2551: } elsif ($target eq 'tex') {
2552: #
2553: # The alignment will require some superstructure to be put around
2554: # the \includegraphics stuff. At present we can only partially
2555: # simulate the alignments offered by html.
2556: #
2557: #
2558: my $align = lc(&Apache::lonxml::get_param('align',
2559: $parstack,
2560: $safeeval,
2561: undef,1));
2562: if(!$align) {
2563: $align = "bottom"; # This is html's default so it's ours too.
2564: }
2565: #
2566: &Apache::lonxml::debug("Alignemnt = $align");
2567: # LaTeX's image/text wrapping is really bad since it wants to
2568: # make figures float.
2569: # The user has the optional parameter (applicable only to l/r
2570: # alignment to use the picins/parpic directive to get wrapped text
2571: # this is also imperfect.. that's why we give them a choice...
2572: # so they can't yell at us for our choice.
2573: #
2574: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2575: $parstack,
2576: $safeeval,
2577: undef,0);
2578: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2579: if(!$latex_rendering) {
2580: $latex_rendering = "parbox";
2581: }
2582: &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2583:
2584: #if original gif/jpg/png file exist do following:
2585: my $origsrc=$src;
2586: my ($path,$file) = &get_eps_image($src);
2587: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2588: &Apache::lonxml::debug("path = $path file = $file src = $src");
2589: if (-e $src) {
2590: &Apache::lonxml::debug("$src exists");
2591: my ($height_param,$width_param)=
2592: &image_size($origsrc,0.3,$parstack,$safeeval);
2593: my $destpath = $path;
2594: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2595: my $destfile = $file;
2596: $destfile =~ s/ /\_/g;
2597: my $size;
2598: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2599: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2600: $size='['.$size;
2601: $size=~s/,$/]/;
2602: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2603: .'\includegraphics'.$size.'{'.$destfile.'} ';
2604:
2605: # If there's an alignment specification we need to honor it here.
2606: # For the horizontal alignments, we will also honor the
2607: # value of the latex specfication. The default is parbox,
2608: # and that's used for illegal values too.
2609: #
2610: # Even though we set a default alignment value, the user
2611: # could have given us an illegal value. In that case we
2612: # just use the default alignment of bottom..
2613: if ($align eq "top") {
2614: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2615: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2616: my $offset = $height_param/2;
2617: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2618: } elsif ($align eq "left") {
2619: if ($latex_rendering eq "parpic") {
2620: $currentstring = '\parpic[l]{'.$currentstring.'}';
2621: } else { # wrapfig render
2622: $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}'
2623: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2624: }
2625: } elsif ($align eq "right") {
2626: if ($latex_rendering eq "parpic") {
2627: $currentstring = '\parpic[r]{'.$currentstring.'}';
2628: } else { # wrapfig rendering
2629: $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}'
2630: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2631:
2632: }
2633: } else { # Bottom is also default.
2634: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2635: }
2636: } else {
2637: &Apache::lonxml::debug("$src does not exist");
2638: #original image file doesn't exist so check the alt attribute
2639: my $alt =
2640: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2641: unless ($alt) {
2642: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2643: }
2644:
2645: if ($alt) { $currentstring .= ' '.$alt.' '; }
2646: }
2647:
2648: # And here's where the semi-quote breaks down: allow the user
2649: # to edit the beast as well by rendering the problem for edit:
2650: } elsif ($target eq 'edit') {
2651: $currentstring .=&Apache::edit::tag_start($target,$token);
2652: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2653: &Apache::edit::browse('src',undef,'alt').' '.
2654: &Apache::edit::search('src',undef,'alt').'<br />';
2655: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2656: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2657: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2658: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2659: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2660: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2661: ['','bottom','middle','top','left','right'],$token,5);
2662: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2663: ['', 'parbox', 'parpic'], $token, 2);
2664: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2665: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2666: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2667: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2668: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2669:
2670:
2671: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2672: if ($width) { $currentstring.=' width="'.$width.'" '; }
2673: if ($height) { $currentstring.=' height="'.$height.'" '; }
2674: $currentstring .= ' />';
2675: } elsif ($target eq 'modified') {
2676: my ($osrc,$owidth,$oheight)=
2677: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2678: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2679: $safeeval,'src','alt','align',
2680: 'TeXwidth','TeXheight', 'TeXwrap',
2681: 'width','height');
2682: my ($nsrc,$nwidth,$nheight)=
2683: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2684: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2685: &image_replication($loc);
2686: my ($iwidth,$iheight);
2687: if (-e $loc) {
2688: my $image = Image::Magick->new;
2689: $image->Read($loc);
2690: ($iwidth, $iheight) = ($image->Get('width'),
2691: $image->Get('height'));
2692: }
2693: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2694: # changed image or no size specified,
2695: # if they didn't explicitly change the
2696: # width or height use the ones from the image
2697: if ($iwidth && $iheight) {
2698: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2699: $token->[2]{'width'} = $iwidth;$ctag=1;
2700: }
2701: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2702: $token->[2]{'height'}=$iheight;$ctag=1;
2703: }
2704: }
2705: }
2706: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2707: # if we don't have a width or height
2708: if ($iwidth && $cwidth && !$cheight) {
2709: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2710: }
2711: if ($iheight && $cheight && !$cwidth) {
2712: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2713: }
2714: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2715: }
2716:
2717: return $currentstring;
2718: }
2719:
2720: sub end_img {
2721: my ($target,$token) = @_;
2722: my $currentstring = '';
2723: if ($target eq 'web') {
2724: $currentstring = $token->[2];
2725: } elsif ($target eq 'tex') {
2726: $currentstring = '';
2727: }
2728: return $currentstring;
2729: }
2730:
2731: #-- <applet> tag (end tag required)
2732: sub start_applet {
2733: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2734:
2735: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2736: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
2737:
2738: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2739: undef,1);
2740: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
2741:
2742: my $currentstring = '';
2743: if ($target eq 'web') {
2744: if ($env{'browser.appletsuppress'} ne 'on') {
2745: $currentstring = &Apache::lonenc::encrypt_ref($token,
2746: {'code'=>$code,
2747: 'archive'=>$archive}
2748: );
2749: } else {
2750: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2751: $safeeval,undef,1);
2752: unless ($alttag) {
2753: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2754: $code);
2755: }
2756: $currentstring='[APPLET: '.$alttag.']';
2757: }
2758: } elsif ($target eq 'tex') {
2759: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2760: $safeeval,undef,1);
2761: unless ($alttag) {
2762: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2763: undef,1);
2764: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2765: $code);
2766: }
2767: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2768: '.}\end{center}';
2769: }
2770: return $currentstring;
2771: }
2772:
2773: sub end_applet {
2774: my ($target,$token) = @_;
2775: my $currentstring = '';
2776: if ($target eq 'web') {
2777: $currentstring = $token->[2];
2778: } elsif ($target eq 'tex') {
2779: }
2780: return $currentstring;
2781: }
2782:
2783: #-- <embed> tag (end tag optional/required)
2784: sub start_embed {
2785: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2786: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2787: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
2788: my $currentstring = '';
2789: if ($target eq 'web') {
2790: if ($env{'browser.embedsuppress'} ne 'on') {
2791: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2792: } else {
2793: my $alttag=&Apache::lonxml::get_param
2794: ('alt',$parstack,$safeeval,undef,1);
2795: unless ($alttag) {
2796: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2797: }
2798: $currentstring='[EMBED: '.$alttag.']';
2799: }
2800: } elsif ($target eq 'tex') {
2801: }
2802: return $currentstring;
2803: }
2804:
2805: sub end_embed {
2806: my ($target,$token) = @_;
2807: my $currentstring = '';
2808: if ($target eq 'web') {
2809: $currentstring = $token->[2];
2810: } elsif ($target eq 'tex') {
2811: }
2812: return $currentstring;
2813: }
2814:
2815: #-- <param> tag (end tag forbidden)
2816: sub start_param {
2817: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2818: if (&Apache::lonxml::get_param
2819: ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
2820: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2821: &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
2822: }
2823: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2824: &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2825: my $currentstring = '';
2826: if ($target eq 'web') {
2827: my %toconvert;
2828: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2829: if ($src) { $toconvert{'src'}= $src; }
2830: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
2831: undef,1);
2832: if ($name=~/^cabbase$/i) {
2833: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
2834: $safeeval,undef,1);
2835: }
2836: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
2837: } elsif ($target eq 'tex') {
2838: }
2839: return $currentstring;
2840: }
2841:
2842: sub end_param {
2843: my ($target,$token) = @_;
2844: my $currentstring = '';
2845: if ($target eq 'web') {
2846: $currentstring = $token->[2];
2847: } elsif ($target eq 'tex') {
2848: }
2849: return $currentstring;
2850: }
2851:
2852: #-- <allow> tag
2853: sub start_allow {
2854: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2855: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2856: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2857: $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
2858: &Apache::lonnet::clutter($src);
2859: if ($target eq 'tex') { &image_replication($src); }
2860: my $result;
2861: if ($target eq 'edit') {
2862: $result .=&Apache::edit::tag_start($target,$token);
2863: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
2864: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
2865: } elsif ($target eq 'modified') {
2866: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
2867: $safeeval,'src');
2868: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
2869: }
2870: return $result;
2871: }
2872:
2873: sub end_allow {
2874: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2875: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
2876: return '';
2877: }
2878:
2879: #-- Frames (end tag required)
2880: #-- <frameset>
2881: sub start_frameset {
2882: my ($target,$token) = @_;
2883: my $currentstring = ''; # Close any pending para.
2884: if ($target eq 'web') {
2885: if (!$Apache::lonxml::registered &&
2886: $env{'request.state'} eq 'published') {
2887: $currentstring.='<head>'.
2888: &Apache::lonmenu::registerurl(undef,$target).'</head>';
2889: }
2890: my $onLoad='';
2891: foreach my $key (keys(%{$token->[2]})) {
2892: if ($key =~ /^onload$/i) {
2893: $onLoad.=$token->[2]->{$key}.';';
2894: delete($token->[2]->{$key});
2895: }
2896: }
2897: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
2898: my $onUnload='';
2899: foreach my $key (keys(%{$token->[2]})) {
2900: if ($key =~ /^onunload$/i) {
2901: $onUnload.=$token->[2]->{$key}.';';
2902: delete($token->[2]->{$key});
2903: }
2904: }
2905: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
2906: ';'.$onUnload;
2907:
2908: $currentstring .= '<'.$token->[1];
2909: foreach (keys %{$token->[2]}) {
2910: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
2911: }
2912: $currentstring.='>';
2913: }
2914: return $currentstring;
2915: }
2916:
2917: sub end_frameset {
2918: my ($target,$token) = @_;
2919: my $currentstring = '';
2920: if ($target eq 'web') {
2921: $currentstring = $token->[2];
2922: }
2923: return $currentstring;
2924: }
2925:
2926: #-- <xmp> (end tag required)
2927: sub start_xmp {
2928: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2929: my $currentstring = '';
2930: if ($target eq 'web') {
2931: $currentstring .= $token->[4];
2932: } elsif ($target eq 'tex') {
2933: $currentstring .= '\begin{verbatim}';
2934: }
2935: return $currentstring;
2936: }
2937:
2938: sub end_xmp {
2939: my ($target,$token) = @_;
2940: my $currentstring = '';
2941: if ($target eq 'web') {
2942: $currentstring .= $token->[2];
2943: } elsif ($target eq 'tex') {
2944: $currentstring .= '\end{verbatim}';
2945: }
2946: return $currentstring;
2947: }
2948:
2949: #-- <pre> (end tag required)
2950: sub start_pre {
2951: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2952: my $currentstring = &end_p(); # close off pending <p>
2953: if ($target eq 'web') {
2954: $currentstring .= $token->[4];
2955: } elsif ($target eq 'tex') {
2956: $currentstring .= '\begin{verbatim}';
2957: }
2958: return $currentstring;
2959: }
2960:
2961: sub end_pre {
2962: my ($target,$token) = @_;
2963: my $currentstring = '';
2964: if ($target eq 'web') {
2965: $currentstring .= $token->[2];
2966: } elsif ($target eq 'tex') {
2967: $currentstring .= '\end{verbatim}';
2968: }
2969: return $currentstring;
2970: }
2971:
2972: #-- <insert>
2973: sub start_insert {
2974: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2975: my $currentstring = '';
2976: if ($target eq 'web') {
2977: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2978: $currentstring .= '<b>'.$display.'</b>';;
2979: }
2980: return $currentstring;
2981: }
2982:
2983: sub end_insert {
2984: my ($target,$token) = @_;
2985: my $currentstring = '';
2986: if ($target eq 'web') {
2987: $currentstring .= '';
2988: }
2989: return $currentstring;
2990: }
2991:
2992: #-- <externallink>
2993: sub start_externallink {
2994: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2995: my $currentstring = '';
2996: if ($target eq 'web') {
2997: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
2998: $currentstring .= '<b>'.$display.'</b>';;
2999: }
3000: return $currentstring;
3001: }
3002:
3003: sub end_externallink {
3004: my ($target,$token) = @_;
3005: my $currentstring = '';
3006: if ($target eq 'web') {
3007: $currentstring .= '';
3008: }
3009: return $currentstring;
3010: }
3011:
3012: #-- <blankspace heigth="">
3013: sub start_blankspace {
3014: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3015: my $currentstring = &end_p(); # closes off any unclosed <p>
3016: if ($target eq 'tex') {
3017: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3018: $currentstring .= '\vskip '.$howmuch.' ';
3019: }
3020: return $currentstring;
3021: }
3022:
3023: sub end_blankspace {
3024: my ($target,$token) = @_;
3025: my $currentstring = '';
3026: if ($target eq 'tex') {
3027: $currentstring .= '';
3028: }
3029: return $currentstring;
3030: }
3031:
3032: #-- <abbr> tag (end tag required)
3033: sub start_abbr {
3034: my ($target,$token) = @_;
3035: my $currentstring = '';
3036: if ($target eq 'web') {
3037: $currentstring = $token->[4];
3038: }
3039: return $currentstring;
3040: }
3041:
3042: sub end_abbr {
3043: my ($target,$token) = @_;
3044: my $currentstring = '';
3045: if ($target eq 'web') {
3046: $currentstring = $token->[2];
3047: }
3048: return $currentstring;
3049: }
3050:
3051: #-- <acronym> tag (end tag required)
3052: sub start_acronym {
3053: my ($target,$token) = @_;
3054: my $currentstring = '';
3055: if ($target eq 'web') {
3056: $currentstring = $token->[4];
3057: }
3058: return $currentstring;
3059: }
3060:
3061: sub end_acronym {
3062: my ($target,$token) = @_;
3063: my $currentstring = '';
3064: if ($target eq 'web') {
3065: $currentstring = $token->[2];
3066: }
3067: return $currentstring;
3068: }
3069:
3070: #-- <area> tag (end tag forbidden)
3071: sub start_area {
3072: my ($target,$token) = @_;
3073: my $currentstring = '';
3074: if ($target eq 'web') {
3075: $currentstring = $token->[4];
3076: }
3077: return $currentstring;
3078: }
3079:
3080: sub end_area {
3081: my ($target,$token) = @_;
3082: my $currentstring = '';
3083: if ($target eq 'web') {
3084: $currentstring = $token->[2];
3085: }
3086: return $currentstring;
3087: }
3088:
3089: #-- <base> tag (end tag forbidden)
3090: sub start_base {
3091: my ($target,$token) = @_;
3092: my $currentstring = '';
3093: if ($target eq 'web') {
3094: $currentstring = $token->[4];
3095: }
3096: return $currentstring;
3097: }
3098:
3099: sub end_base {
3100: my ($target,$token) = @_;
3101: my $currentstring = '';
3102: if ($target eq 'web') {
3103: $currentstring = $token->[2];
3104: }
3105: return $currentstring;
3106: }
3107:
3108: #-- <bdo> tag (end tag required)
3109: sub start_bdo {
3110: my ($target,$token) = @_;
3111: my $currentstring = '';
3112: if ($target eq 'web') {
3113: $currentstring = $token->[4];
3114: }
3115: return $currentstring;
3116: }
3117:
3118: sub end_bdo {
3119: my ($target,$token) = @_;
3120: my $currentstring = '';
3121: if ($target eq 'web') {
3122: $currentstring = $token->[2];
3123: }
3124: return $currentstring;
3125: }
3126:
3127: #-- <bgsound> tag (end tag optional)
3128: sub start_bgsound {
3129: my ($target,$token) = @_;
3130: my $currentstring = '';
3131: if ($target eq 'web') {
3132: $currentstring = $token->[4];
3133: }
3134: return $currentstring;
3135: }
3136:
3137: sub end_bgsound {
3138: my ($target,$token) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring = $token->[2];
3142: }
3143: return $currentstring;
3144: }
3145:
3146: #-- <blink> tag (end tag required)
3147: sub start_blink {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web') {
3151: $currentstring = $token->[4];
3152: }
3153: return $currentstring;
3154: }
3155:
3156: sub end_blink {
3157: my ($target,$token) = @_;
3158: my $currentstring = '';
3159: if ($target eq 'web') {
3160: $currentstring = $token->[2];
3161: }
3162: return $currentstring;
3163: }
3164:
3165: #-- <blockquote> tag (end tag required)
3166: sub start_blockquote {
3167: my ($target,$token) = @_;
3168: my $currentstring = &end_p(); # Close any unclosed <p>
3169: if ($target eq 'web') {
3170: $currentstring .= $token->[4];
3171: }
3172: return $currentstring;
3173: }
3174:
3175: sub end_blockquote {
3176: my ($target,$token) = @_;
3177: my $currentstring = '';
3178: if ($target eq 'web') {
3179: $currentstring = $token->[2];
3180: }
3181: return $currentstring;
3182: }
3183:
3184: #-- <button> tag (end tag required)
3185: sub start_button {
3186: my ($target,$token) = @_;
3187: my $currentstring = '';
3188: if ($target eq 'web') {
3189: $currentstring = $token->[4];
3190: }
3191: return $currentstring;
3192: }
3193:
3194: sub end_button {
3195: my ($target,$token) = @_;
3196: my $currentstring = '';
3197: if ($target eq 'web') {
3198: $currentstring = $token->[2];
3199: }
3200: return $currentstring;
3201: }
3202:
3203: #-- <caption> tag (end tag required)
3204: sub start_caption {
3205: my ($target,$token) = @_;
3206: my $currentstring = '';
3207: if ($target eq 'web') {
3208: $currentstring = $token->[4];
3209: }
3210: return $currentstring;
3211: }
3212:
3213: sub end_caption {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring = $token->[2];
3218: }
3219: return $currentstring;
3220: }
3221:
3222: #-- <col> tag (end tag forbdden)
3223: sub start_col {
3224: my ($target,$token) = @_;
3225: my $currentstring = '';
3226: if ($target eq 'web') {
3227: $currentstring = $token->[4];
3228: }
3229: return $currentstring;
3230: }
3231:
3232: sub end_col {
3233: my ($target,$token) = @_;
3234: my $currentstring = '';
3235: if ($target eq 'web') {
3236: $currentstring = $token->[2];
3237: }
3238: return $currentstring;
3239: }
3240:
3241: #-- <colgroup> tag (end tag optional)
3242: sub start_colgroup {
3243: my ($target,$token) = @_;
3244: my $currentstring = '';
3245: if ($target eq 'web') {
3246: $currentstring = $token->[4];
3247: }
3248: return $currentstring;
3249: }
3250:
3251: sub end_colgroup {
3252: my ($target,$token) = @_;
3253: my $currentstring = '';
3254: if ($target eq 'web') {
3255: $currentstring = $token->[2];
3256: }
3257: return $currentstring;
3258: }
3259:
3260: #-- <del> tag (end tag required)
3261: sub start_del {
3262: my ($target,$token) = @_;
3263: my $currentstring = '';
3264: if ($target eq 'web') {
3265: $currentstring = $token->[4];
3266: }
3267: return $currentstring;
3268: }
3269:
3270: sub end_del {
3271: my ($target,$token) = @_;
3272: my $currentstring = '';
3273: if ($target eq 'web') {
3274: $currentstring = $token->[2];
3275: }
3276: return $currentstring;
3277: }
3278:
3279: #-- <fieldset> tag (end tag required)
3280: sub start_fieldset {
3281: my ($target,$token) = @_;
3282: my $currentstring = '';
3283: if ($target eq 'web') {
3284: $currentstring = $token->[4];
3285: }
3286: return $currentstring;
3287: }
3288:
3289: sub end_fieldset {
3290: my ($target,$token) = @_;
3291: my $currentstring = '';
3292: if ($target eq 'web') {
3293: $currentstring = $token->[2];
3294: }
3295: return $currentstring;
3296: }
3297:
3298: #-- <frame> tag (end tag forbidden)
3299: sub start_frame {
3300: my ($target,$token) = @_;
3301: my $currentstring = '';
3302: if ($target eq 'web') {
3303: $currentstring = $token->[4];
3304: }
3305: return $currentstring;
3306: }
3307:
3308: sub end_frame {
3309: my ($target,$token) = @_;
3310: my $currentstring = '';
3311: if ($target eq 'web') {
3312: $currentstring = $token->[2];
3313: }
3314: return $currentstring;
3315: }
3316:
3317: #-- <iframe> tag (end tag required)
3318: sub start_iframe {
3319: my ($target,$token) = @_;
3320: my $currentstring = '';
3321: if ($target eq 'web') {
3322: $currentstring = $token->[4];
3323: }
3324: return $currentstring;
3325: }
3326:
3327: sub end_iframe {
3328: my ($target,$token) = @_;
3329: my $currentstring = '';
3330: if ($target eq 'web') {
3331: $currentstring = $token->[2];
3332: }
3333: return $currentstring;
3334: }
3335:
3336: #-- <ins> tag (end tag required)
3337: sub start_ins {
3338: my ($target,$token) = @_;
3339: my $currentstring = '';
3340: if ($target eq 'web') {
3341: $currentstring = $token->[4];
3342: }
3343: return $currentstring;
3344: }
3345:
3346: sub end_ins {
3347: my ($target,$token) = @_;
3348: my $currentstring = '';
3349: if ($target eq 'web') {
3350: $currentstring = $token->[2];
3351: }
3352: return $currentstring;
3353: }
3354:
3355: #-- <isindex> tag (end tag forbidden)
3356: sub start_isindex {
3357: my ($target,$token) = @_;
3358: my $currentstring = '';
3359: if ($target eq 'web') {
3360: $currentstring = $token->[4];
3361: }
3362: return $currentstring;
3363: }
3364:
3365: sub end_isindex {
3366: my ($target,$token) = @_;
3367: my $currentstring = '';
3368: if ($target eq 'web') {
3369: $currentstring = $token->[2];
3370: }
3371: return $currentstring;
3372: }
3373:
3374: #-- <keygen> tag (end tag forbidden)
3375: sub start_keygen {
3376: my ($target,$token) = @_;
3377: my $currentstring = '';
3378: if ($target eq 'web') {
3379: $currentstring = $token->[4];
3380: }
3381: return $currentstring;
3382: }
3383:
3384: sub end_keygen {
3385: my ($target,$token) = @_;
3386: my $currentstring = '';
3387: if ($target eq 'web') {
3388: $currentstring = $token->[2];
3389: }
3390: return $currentstring;
3391: }
3392:
3393: #-- <label> tag
3394: sub start_label {
3395: my ($target,$token) = @_;
3396: my $currentstring = '';
3397: if ($target eq 'web') {
3398: $currentstring = $token->[4];
3399: }
3400: return $currentstring;
3401: }
3402:
3403: sub end_label {
3404: my ($target,$token) = @_;
3405: my $currentstring = '';
3406: if ($target eq 'web') {
3407: $currentstring = $token->[2];
3408: }
3409: return $currentstring;
3410: }
3411:
3412: #-- <layer> tag (end tag required)
3413: sub start_layer {
3414: my ($target,$token) = @_;
3415: my $currentstring = '';
3416: if ($target eq 'web') {
3417: $currentstring = $token->[4];
3418: }
3419: return $currentstring;
3420: }
3421:
3422: sub end_layer {
3423: my ($target,$token) = @_;
3424: my $currentstring = '';
3425: if ($target eq 'web') {
3426: $currentstring = $token->[2];
3427: }
3428: return $currentstring;
3429: }
3430:
3431: #-- <legend> tag (end tag required)
3432: sub start_legend {
3433: my ($target,$token) = @_;
3434: my $currentstring = '';
3435: if ($target eq 'web') {
3436: $currentstring = $token->[4];
3437: }
3438: return $currentstring;
3439: }
3440:
3441: sub end_legend {
3442: my ($target,$token) = @_;
3443: my $currentstring = '';
3444: if ($target eq 'web') {
3445: $currentstring = $token->[2];
3446: }
3447: return $currentstring;
3448: }
3449:
3450: #-- <link> tag (end tag forbidden)
3451: sub start_link {
3452: my ($target,$token) = @_;
3453: my $currentstring = '';
3454: if ($target eq 'web') {
3455: $currentstring = $token->[4];
3456: }
3457: return $currentstring;
3458: }
3459:
3460: sub end_link {
3461: my ($target,$token) = @_;
3462: my $currentstring = '';
3463: if ($target eq 'web') {
3464: $currentstring = $token->[2];
3465: }
3466: return $currentstring;
3467: }
3468:
3469: #-- <marquee> tag (end tag optional)
3470: sub start_marquee {
3471: my ($target,$token) = @_;
3472: my $currentstring = '';
3473: if ($target eq 'web') {
3474: $currentstring = $token->[4];
3475: }
3476: return $currentstring;
3477: }
3478:
3479: sub end_marquee {
3480: my ($target,$token) = @_;
3481: my $currentstring = '';
3482: if ($target eq 'web') {
3483: $currentstring = $token->[2];
3484: }
3485: return $currentstring;
3486: }
3487:
3488: #-- <multicol> tag (end tag required)
3489: sub start_multicol {
3490: my ($target,$token) = @_;
3491: my $currentstring = &end_p(); # Close any pending <p>
3492: if ($target eq 'web') {
3493: $currentstring .= $token->[4];
3494: }
3495: return $currentstring;
3496: }
3497:
3498: sub end_multicol {
3499: my ($target,$token) = @_;
3500: my $currentstring = '';
3501: if ($target eq 'web') {
3502: $currentstring = $token->[2];
3503: }
3504: return $currentstring;
3505: }
3506:
3507: #-- <nobr> tag (end tag required)
3508: sub start_nobr {
3509: my ($target,$token) = @_;
3510: my $currentstring = '';
3511: if ($target eq 'web') {
3512: $currentstring = $token->[4];
3513: } elsif ($target eq 'tex') {
3514: $currentstring='\mbox{';
3515: }
3516: return $currentstring;
3517: }
3518:
3519: sub end_nobr {
3520: my ($target,$token) = @_;
3521: my $currentstring = '';
3522: if ($target eq 'web') {
3523: $currentstring = $token->[2];
3524: } elsif ($target eq 'tex') {
3525: $currentstring='}';
3526: }
3527: return $currentstring;
3528: }
3529:
3530: #-- <noembed> tag (end tag required)
3531: sub start_noembed {
3532: my ($target,$token) = @_;
3533: my $currentstring = '';
3534: if ($target eq 'web') {
3535: $currentstring = $token->[4];
3536: }
3537: return $currentstring;
3538: }
3539:
3540: sub end_noembed {
3541: my ($target,$token) = @_;
3542: my $currentstring = '';
3543: if ($target eq 'web') {
3544: $currentstring = $token->[2];
3545: }
3546: return $currentstring;
3547: }
3548:
3549: #-- <noframes> tag (end tag required)
3550: sub start_noframes {
3551: my ($target,$token) = @_;
3552: my $currentstring = '';
3553: if ($target eq 'web') {
3554: $currentstring = $token->[4];
3555: }
3556: return $currentstring;
3557: }
3558:
3559: sub end_noframes {
3560: my ($target,$token) = @_;
3561: my $currentstring = '';
3562: if ($target eq 'web') {
3563: $currentstring = $token->[2];
3564: }
3565: return $currentstring;
3566: }
3567:
3568: #-- <nolayer> tag (end tag required)
3569: sub start_nolayer {
3570: my ($target,$token) = @_;
3571: my $currentstring = '';
3572: if ($target eq 'web') {
3573: $currentstring = $token->[4];
3574: }
3575: return $currentstring;
3576: }
3577:
3578: sub end_nolayer {
3579: my ($target,$token) = @_;
3580: my $currentstring = '';
3581: if ($target eq 'web') {
3582: $currentstring = $token->[2];
3583: }
3584: return $currentstring;
3585: }
3586:
3587: #-- <noscript> tag (end tag required)
3588: sub start_noscript {
3589: my ($target,$token) = @_;
3590: my $currentstring = '';
3591: if ($target eq 'web') {
3592: $currentstring = $token->[4];
3593: }
3594: return $currentstring;
3595: }
3596:
3597: sub end_noscript {
3598: my ($target,$token) = @_;
3599: my $currentstring = '';
3600: if ($target eq 'web') {
3601: $currentstring = $token->[2];
3602: }
3603: return $currentstring;
3604: }
3605:
3606: #-- <object> tag (end tag required)
3607: sub start_object {
3608: my ($target,$token) = @_;
3609: my $currentstring = '';
3610: if ($target eq 'web') {
3611: $currentstring = $token->[4];
3612: }
3613: return $currentstring;
3614: }
3615:
3616: sub end_object {
3617: my ($target,$token) = @_;
3618: my $currentstring = '';
3619: if ($target eq 'web') {
3620: $currentstring = $token->[2];
3621: }
3622: return $currentstring;
3623: }
3624:
3625: #-- <optgroup> tag (end tag required)
3626: sub start_optgroup {
3627: my ($target,$token) = @_;
3628: my $currentstring = '';
3629: if ($target eq 'web') {
3630: $currentstring = $token->[4];
3631: }
3632: return $currentstring;
3633: }
3634:
3635: sub end_optgroup {
3636: my ($target,$token) = @_;
3637: my $currentstring = '';
3638: if ($target eq 'web') {
3639: $currentstring = $token->[2];
3640: }
3641: return $currentstring;
3642: }
3643:
3644: #-- <samp> tag (end tag required)
3645: sub start_samp {
3646: my ($target,$token) = @_;
3647: my $currentstring = '';
3648: if ($target eq 'web') {
3649: $currentstring = $token->[4];
3650: } elsif ($target eq 'tex') {
3651: $currentstring='\texttt{';
3652: }
3653: return $currentstring;
3654: }
3655:
3656: sub end_samp {
3657: my ($target,$token) = @_;
3658: my $currentstring = '';
3659: if ($target eq 'web') {
3660: $currentstring = $token->[2];
3661: } elsif ($target eq 'tex') {
3662: $currentstring='}';
3663: }
3664: return $currentstring;
3665: }
3666:
3667: #-- <server> tag
3668: sub start_server {
3669: my ($target,$token) = @_;
3670: my $currentstring = '';
3671: if ($target eq 'web') {
3672: $currentstring = $token->[4];
3673: }
3674: return $currentstring;
3675: }
3676:
3677: sub end_server {
3678: my ($target,$token) = @_;
3679: my $currentstring = '';
3680: if ($target eq 'web') {
3681: $currentstring = $token->[2];
3682: }
3683: return $currentstring;
3684: }
3685:
3686: #-- <spacer> tag (end tag forbidden)
3687: sub start_spacer {
3688: my ($target,$token) = @_;
3689: my $currentstring = &end_p(); # Close off any open <p> tag.
3690: if ($target eq 'web') {
3691: $currentstring .= $token->[4];
3692: }
3693: return $currentstring;
3694: }
3695:
3696: sub end_spacer {
3697: my ($target,$token) = @_;
3698: my $currentstring = '';
3699: if ($target eq 'web') {
3700: $currentstring = $token->[2];
3701: }
3702: return $currentstring;
3703: }
3704:
3705: #-- <span> tag (end tag required)
3706: sub start_span {
3707: my ($target,$token) = @_;
3708: my $currentstring = '';
3709: if ($target eq 'web') {
3710: $currentstring = $token->[4];
3711: }
3712: return $currentstring;
3713: }
3714:
3715: sub end_span {
3716: my ($target,$token) = @_;
3717: my $currentstring = '';
3718: if ($target eq 'web') {
3719: $currentstring = $token->[2];
3720: }
3721: return $currentstring;
3722: }
3723:
3724: #-- <tbody> tag (end tag optional)
3725: sub start_tbody {
3726: my ($target,$token) = @_;
3727: my $currentstring = '';
3728: if ($target eq 'web') {
3729: $currentstring = $token->[4];
3730: }
3731: return $currentstring;
3732: }
3733:
3734: sub end_tbody {
3735: my ($target,$token) = @_;
3736: my $currentstring = '';
3737: if ($target eq 'web') {
3738: $currentstring = $token->[2];
3739: }
3740: return $currentstring;
3741: }
3742:
3743: #-- <tfoot> tag (end tag optional)
3744: sub start_tfoot {
3745: my ($target,$token) = @_;
3746: my $currentstring = '';
3747: if ($target eq 'web') {
3748: $currentstring = $token->[4];
3749: }
3750: return $currentstring;
3751: }
3752:
3753: sub end_tfoot {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web') {
3757: $currentstring = $token->[2];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: #-- <thead> tag (end tag optional)
3763: sub start_thead {
3764: my ($target,$token) = @_;
3765: my $currentstring = '';
3766: if ($target eq 'web') {
3767: $currentstring = $token->[4];
3768: }
3769: return $currentstring;
3770: }
3771:
3772: sub end_thead {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web') {
3776: $currentstring = $token->[2];
3777: }
3778: return $currentstring;
3779: }
3780:
3781: #-- <var> tag
3782: sub start_var {
3783: my ($target,$token) = @_;
3784: my $currentstring = '';
3785: if ($target eq 'web') {
3786: $currentstring = $token->[4];
3787: } elsif ($target eq 'tex') {
3788: $currentstring = '\textit{';
3789: }
3790: return $currentstring;
3791: }
3792:
3793: sub end_var {
3794: my ($target,$token) = @_;
3795: my $currentstring = '';
3796: if ($target eq 'web') {
3797: $currentstring = $token->[2];
3798: } elsif ($target eq 'tex') {
3799: $currentstring = '}';
3800: }
3801: return $currentstring;
3802: }
3803:
3804: #-- <wbr> tag (end tag forbidden)
3805: sub start_wbr {
3806: my ($target,$token) = @_;
3807: my $currentstring = '';
3808: if ($target eq 'web') {
3809: $currentstring = $token->[4];
3810: }
3811: return $currentstring;
3812: }
3813:
3814: sub end_wbr {
3815: my ($target,$token) = @_;
3816: my $currentstring = '';
3817: if ($target eq 'web') {
3818: $currentstring = $token->[2];
3819: }
3820: return $currentstring;
3821: }
3822:
3823: #-- <hideweboutput> tag
3824: sub start_hideweboutput {
3825: my ($target,$token) = @_;
3826: if ($target eq 'web') {
3827: &Apache::lonxml::startredirection();
3828: }
3829: return '';
3830: }
3831:
3832: sub end_hideweboutput {
3833: my ($target,$token) = @_;
3834: my $currentstring = '';
3835: if ($target eq 'web') {
3836: $currentstring = &Apache::lonxml::endredirection();
3837: }
3838: return '';
3839: }
3840:
3841:
3842: sub image_replication {
3843: my $src = shift;
3844: if (not -e $src) { &Apache::lonnet::repcopy($src); }
3845: #replicates eps or ps
3846: my $epssrc = my $pssrc = $src;
3847: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
3848: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
3849: if (not -e $epssrc && not -e $pssrc) {
3850: my $result=&Apache::lonnet::repcopy($epssrc);
3851: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
3852: }
3853: return '';
3854: }
3855: #
3856: # Get correct sizing parameter for an image given
3857: # it's initial ht. and wid. This allows sizing of
3858: # images that are generated on-the-fly (e.g. gnuplot)
3859: # as well as serving as a utility for image_size.
3860: #
3861: # Parameter:
3862: # height_param
3863: # width_param - Initial picture dimensions.
3864: # scaling - A scale factor.
3865: # parstack, - the current stack of tag attributes
3866: # from the xml parser
3867: # safeeval, - pointer to the safespace
3868: # depth, - from what level in the stack to look for attributes
3869: # (assumes -1 if unspecified)
3870: # cis - look for attrubutes case insensitively
3871: # (assumes false)
3872: #
3873: # Returns:
3874: # height, width - new dimensions.
3875: #
3876: sub resize_image {
3877: my ($height_param, $width_param, $scaling,
3878: $parstack, $safeeval, $depth, $cis) = @_;
3879:
3880: # First apply the scaling...
3881:
3882: $height_param = $height_param * $scaling;
3883: $width_param = $width_param * $scaling;
3884:
3885: #do we have any specified LaTeX size of the picture?
3886: my $toget='TeXwidth';
3887: if ($cis) {
3888: $toget=lc($toget);
3889: }
3890: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
3891: $safeeval,$depth,$cis);
3892: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
3893: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
3894: $safeeval,$depth,$cis);
3895: #do we have any specified web size of the picture?
3896: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
3897: $depth,1);
3898: if ($TeXwidth) {
3899: my $old_width_param=$width_param;
3900: if ($TeXwidth=~/(\d+)\s*\%/) {
3901: $width_param = $1*$env{'form.textwidth'}/100;
3902: } else {
3903: $width_param = $TeXwidth;
3904: }
3905: if ($TeXheight) {
3906: $height_param = $TeXheight;
3907: } elsif ($old_width_param) {
3908: $height_param=$TeXwidth/$old_width_param*$height_param;
3909: }
3910: } elsif ($TeXheight) {
3911: $height_param = $TeXheight;
3912: if ($height_param) {
3913: $width_param = $TeXheight/$height_param*$width_param;
3914: }
3915: } elsif ($width) {
3916: my $old_width_param=$width_param;
3917: $width_param = $width*$scaling;
3918: if ($old_width_param) {
3919: $height_param=$width_param/$old_width_param*$height_param;
3920: }
3921: }
3922: if ($width_param > $env{'form.textwidth'}) {
3923: my $old_width_param=$width_param;
3924: $width_param =0.95*$env{'form.textwidth'};
3925: if ($old_width_param) {
3926: $height_param=$width_param/$old_width_param*$height_param;
3927: }
3928: }
3929:
3930: return ($height_param, $width_param);
3931: }
3932:
3933: sub image_size {
3934: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
3935:
3936: #size of image from gif/jpg/jpeg/png
3937: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3938: if (-e $ressrc) {
3939: $src = $ressrc;
3940: }
3941: my $image = Image::Magick->new;
3942: my $current_figure = $image->Read($src);
3943: my $width_param = $image->Get('width');
3944: my $height_param = $image->Get('height');
3945: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
3946: undef($image);
3947:
3948: ($height_param, $width_param) = &resize_image($height_param, $width_param,
3949: $scaling, $parstack, $safeeval,
3950: $depth, $cis);
3951:
3952: return ($height_param, $width_param);
3953: }
3954:
3955: sub image_width {
3956: my ($height, $width) = &image_size(@_);
3957: return $width;
3958: }
3959: # Not yet 100% sure this is correct in all circumstances..
3960: # due to my uncertainty about mods to image_size.
3961: #
3962: sub image_height {
3963: my ($height, $width) = &image_size(@_);
3964: return $height;
3965: }
3966:
3967: sub get_eps_image {
3968: my ($src)=@_;
3969: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
3970:
3971: # In order to prevent the substitution of the alt text, we need to
3972: # be sure the orig_src file is on system now so:
3973:
3974: if (! -e $orig_src) {
3975: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
3976: }
3977: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
3978: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
3979: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
3980: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
3981: &Apache::lonxml::debug("Filelocation gives: $src");
3982: if (! -e $src) {
3983: &Apache::lonxml::debug("$src does not exist");
3984: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
3985: &Apache::lonxml::debug("Repcopy of $src failed (1)");
3986: #if replication failed try to find ps file
3987: $src=~s/\.eps$/\.ps/;
3988: &Apache::lonxml::debug("Now looking for $src");
3989: #if no ps file try to replicate it.
3990: my $didrepcopy = &Apache::lonnet::repcopy($src);
3991: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
3992: if ( (not -e $src) ||
3993: ($didrepcopy ne 'ok')) {
3994: &Apache::lonxml::debug("Failed to find or replicate $src");
3995:
3996: #if replication failed try to produce eps file dynamically
3997: $src=~s/\.ps$/\.eps/;
3998: my $temp_file;
3999: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4000: my $newsrc=$orig_src;
4001: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4002: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4003: print FILE "$newsrc\n";
4004: close FILE;
4005: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4006: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4007: if ($sext ne "") { # Put the ext. back in to uniquify.
4008: $src =~ s/\.eps$/$sext.eps/;
4009: }
4010: }
4011: }
4012: }
4013: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4014: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4015: return ($path.'/',$file);
4016: }
4017:
4018: sub eps_generation {
4019: my ($src,$file,$width_param) = @_;
4020: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4021: my $temp_file = Apache::File->new('>>'.$filename);
4022: print $temp_file "$src\n";
4023: my $newsrc = $src;
4024: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4025: $newsrc=~s/\/home\/httpd\/html\/res//;
4026: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4027: $newsrc=~s/\/\.\//\//;
4028: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4029: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4030: $newsrc=~s/\/home\/httpd\/lonUsers//;
4031: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4032: }
4033: if ($newsrc=~/\/userfiles\//) {
4034: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4035: } else {
4036: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4037: }
4038: }
4039:
4040: sub file_path {
4041: my $src=shift;
4042: my ($file,$path);
4043: if ($src =~ m!(.*)/([^/]*)$!) {
4044: $file = $2;
4045: $path = $1.'/';
4046: }
4047: return $file,$path;
4048: }
4049:
4050: sub recalc {
4051: my $argument = shift;
4052: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4053: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4054: my $value=$1;
4055: my $units=$2;
4056: if ($units eq 'cm') {
4057: $value*=10;
4058: } elsif ($units eq 'in') {
4059: $value*=25.4;
4060: } elsif ($units eq 'pc') {
4061: $value*=(25.4*12/72.27);
4062: } elsif ($units eq 'pt') {
4063: $value*=(25.4/72.27);
4064: }
4065: return $value.' mm';
4066: }
4067:
4068: sub LATEX_length {
4069: my $garbage=shift;
4070: $garbage=~s/^\s+$//;
4071: $garbage=~s/^\s+(\S.*)/$1/;#space before
4072: $garbage=~s/(.*\S)\s+$/$1/;#space after
4073: $garbage=~s/(\s)+/$1/;#only one space
4074: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4075: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4076: $garbage=~s/([^\\])\$/$1/g;#$
4077: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4078: $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;
4079: $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;
4080: $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;
4081: $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;
4082: $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;
4083: $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;
4084: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4085: #remove some other LaTeX command
4086: $garbage=~s|\\(\w+)\\|\\|g;
4087: $garbage=~s|\\(\w+)(\s*)|$2|g;
4088: $garbage=~s|\+|11|g;
4089: my $value=length($garbage);
4090: return $value;
4091: }
4092:
4093:
4094:
4095:
4096: 1;
4097: __END__
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