File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.312:
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Wed Jan 11 11:58:06 2006 UTC (18 years, 4 months ago) by
foxr
Branches:
MAIN
CVS tags:
HEAD
Get a bit more specific about when wrapfig is allowed:
- If the user requests an image alignment that would normally turn on wrapfig
inside a table, wrapfig is disallowed since that makes the image size computation
fail and the figure disappear as it becomes width 0mm. In this case, wrapfig
is mapped to parpic
- If the user requests an image alignment that would turn on wrapfig outside
a table, that's ok and allowed to make text wrapping better.`
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.312 2006/01/11 11:58:06 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: # use Data::Dumper;
52:
53: BEGIN {
54:
55: &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'));
56:
57: }
58:
59: #
60: # Dumps all elements of the table structure.
61: # Need this 'cause evidently when given an array, Data::Dumper only seems
62: # to dump element 0.
63: #
64: #sub debug_dump_table {
65: # my $lastrow = $#Apache::londefdef::table;
66: # &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
67: # my $row;
68: # for ($row =0; $row <= $lastrow; $row++ ) {
69: # my $text = Dumper($Apache::londefdef::table[$row]);
70: # &Apache::lonnet::logthis("table [ $row ]".$text);
71: # }
72: #}
73: sub initialize_londefdef {
74: $Apache::londefdef::TD_redirection=0;
75: @Apache::londefdef::table = ();
76: $Apache::londefdef::select=0;
77: undef(@Apache::londefdef::description);
78: @Apache::londefdef::DD=(0);
79: @Apache::londefdef::DT=(0);
80: @Apache::londefdef::seenDT=(0);
81: $Apache::londefdef::list_index=0;
82: }
83:
84: #======================= TAG SUBROUTINES =====================
85: #-- <output>
86: sub start_output {
87: my ($target) = @_;
88: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
89: return '';
90: }
91: sub end_output {
92: my ($target) = @_;
93: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
94: return '';
95: }
96: #-- <m> tag
97: sub start_m {
98: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
99: my $currentstring = '';
100: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
101: if ($target eq 'web' || $target eq 'analyze') {
102: &Apache::lonxml::debug("M is starting with:$inside:");
103: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
104: if ($eval eq 'on') {
105: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
106: #&Apache::lonxml::debug("M is evaulated to:$inside:");
107: }
108: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
109: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
110: if ($Apache::lontexconvert::errorstring) {
111: &Apache::lonxml::warning("tth error: ".
112: $Apache::lontexconvert::errorstring);
113: $Apache::lontexconvert::errorstring='';
114: }
115: #&Apache::lonxml::debug("M is ends with:$currentstring:");
116: $Apache::lonxml::post_evaluate=0;
117: } elsif ($target eq 'tex') {
118: $currentstring = $inside;
119: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
120: if ($eval eq 'on') {
121: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
122: }
123: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
124: # detect simple math mode entry exits, and convert them
125: # to use \ensuremath
126: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
127: $currentstring=~s/^(\s*)\$/$1/;
128: $currentstring=~s/\$(\s*)$/$1/;
129: $currentstring='\ensuremath{'.$currentstring.'}';
130: }
131: $Apache::lonxml::post_evaluate=0;
132: }
133: return $currentstring;
134: }
135:
136: sub end_m {
137: my ($target,$token) = @_;
138: my $currentstring = '';
139: if ($target eq 'tex') {
140: $currentstring = "";
141: }
142: return $currentstring;
143: }
144:
145: sub start_tthoption {
146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
147: my $result;
148: if ($target eq 'web') {
149: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
150: $style);
151: $inside=~s/^\s*//;
152: if ($env{'browser.mathml'}) {
153: &tth::ttmoptions($inside);
154: } else {
155: &tth::tthoptions($inside);
156: }
157: }
158: return $result;
159: }
160:
161: sub end_tthoption {
162: my ($target,$token) = @_;
163: my $result;
164: return $result;
165: }
166:
167: #-- <html> tag (end tag optional)
168: sub start_html {
169: my ($target,$token) = @_;
170: my $currentstring = '';
171: my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
172: &Apache::lontexconvert::init_tth();
173: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
174: $currentstring = &Apache::lonxml::xmlbegin();
175: } elsif ($target eq 'tex') {
176: $currentstring .= '\documentclass[letterpaper,twoside]{article}';
177: if (($env{'form.latex_type'}=~'batchmode') ||
178: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
179: $currentstring .= '\newcommand{\keephidden}[1]{}'.
180: '\renewcommand{\deg}{$^{\circ}$}'.
181: '\usepackage{multirow}'.
182: '\usepackage{longtable}'.
183: '\usepackage{textcomp}'.
184: '\usepackage{makeidx}'.
185: '\usepackage[dvips]{graphicx}'.
186: '\usepackage{wrapfig}'.
187: '\usepackage{picins}'.
188: '\usepackage{epsfig}'.
189: '\usepackage{calc}'.
190: '\usepackage{amsmath}'.
191: '\usepackage{amssymb}'.
192: '\usepackage{amsfonts}'.
193: '\usepackage{amsthm}'.
194: '\usepackage{amscd}'.
195: '\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}}'.
196: '\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}}';
197: }
198: return $currentstring;
199: }
200:
201: sub end_html {
202: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
203: my $currentstring = '';
204: if ($target eq 'web') {
205: $currentstring = '</html>';
206: }
207: return $currentstring;
208: }
209:
210: #-- <head> tag (end tag optional)
211: sub start_head {
212: my ($target,$token) = @_;
213: my $currentstring = '';
214: if ($target eq 'web') {
215: $currentstring = $token->[4].&Apache::lonxml::fontsettings();
216: }
217: return $currentstring;
218: }
219:
220: sub end_head {
221: my ($target,$token) = @_;
222: my $currentstring = '';
223: if ($target eq 'web' && $env{'request.state'} eq 'published') {
224: $currentstring = &Apache::lonmenu::registerurl(undef,$target).
225: $token->[2];
226: }
227: return $currentstring;
228: }
229:
230: #-- <map> tag (end tag required)
231: sub start_map {
232: my ($target,$token) = @_;
233: my $currentstring = '';
234: if ($target eq 'web') {
235: $currentstring = $token->[4];
236: }
237: return $currentstring;
238: }
239:
240: sub end_map {
241: my ($target,$token) = @_;
242: my $currentstring = '';
243: if ($target eq 'web') {
244: $currentstring = $token->[2];
245: }
246: return $currentstring;
247: }
248:
249: #-- <select> tag (end tag required)
250: sub start_select {
251: my ($target,$token) = @_;
252: my $currentstring = '';
253: if ($target eq 'web') {
254: $currentstring = $token->[4];
255: } elsif ($target eq 'tex') {
256: $Apache::londefdef::select=0;
257: }
258: return $currentstring;
259: }
260:
261: sub end_select {
262: my ($target,$token) = @_;
263: my $currentstring = '';
264: if ($target eq 'web') {
265: $currentstring = $token->[2];
266: }
267: return $currentstring;
268: }
269:
270: #-- <option> tag (end tag optional)
271: sub start_option {
272: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
273: my $currentstring = '';
274: if ($target eq 'web') {
275: $currentstring = $token->[4];
276: } elsif ($target eq 'tex') {
277: $Apache::londefdef::select++;
278: if ($Apache::londefdef::select == 1) {
279: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
280: } else {
281: $currentstring='\keephidden{';
282: }
283: }
284: return $currentstring;
285: }
286:
287: sub end_option {
288: my ($target,$token) = @_;
289: my $currentstring = '';
290: if ($target eq 'web') {
291: $currentstring = $token->[2];
292: } elsif ($target eq 'tex') {
293: $currentstring='}';
294: }
295: return $currentstring;
296: }
297:
298: #-- <input> tag (end tag forbidden)
299: sub start_input {
300: my ($target,$token) = @_;
301: my $currentstring = '';
302: if ($target eq 'web') {
303: $currentstring = $token->[4];
304: }
305: return $currentstring;
306: }
307:
308: sub end_input {
309: my ($target,$token) = @_;
310: my $currentstring = '';
311: if ($target eq 'web') {
312: $currentstring = $token->[2];
313: }
314: return $currentstring;
315: }
316:
317: #-- <textarea> tag (end tag required)
318: sub start_textarea {
319: my ($target,$token) = @_;
320: my $currentstring = '';
321: if ($target eq 'web') {
322: $currentstring = $token->[4];
323: }
324: return $currentstring;
325: }
326:
327: sub end_textarea {
328: my ($target,$token) = @_;
329: my $currentstring = '';
330: if ($target eq 'web') {
331: $currentstring = $token->[2];
332: }
333: return $currentstring;
334: }
335:
336: #-- <form> tag (end tag required)
337: sub start_form {
338: my ($target,$token) = @_;
339: my $currentstring = '';
340: if ($target eq 'web') {
341: $currentstring = $token->[4];
342: }
343: return $currentstring;
344: }
345:
346: sub end_form {
347: my ($target,$token) = @_;
348: my $currentstring = '';
349: if ($target eq 'web') {
350: $currentstring = $token->[2];
351: }
352: return $currentstring;
353: }
354:
355: #-- <title> tag (end tag required)
356: sub start_title {
357: my ($target,$token) = @_;
358: my $currentstring = '';
359: if ($target eq 'web') {
360: $currentstring = $token->[4];
361: } elsif ($target eq 'tex') {
362: $currentstring .= '\keephidden{Title of the document: '
363: }
364: if ($target eq 'meta') {
365: $currentstring='<title>';
366: &start_output($target);
367: }
368: return $currentstring;
369: }
370:
371: sub end_title {
372: my ($target,$token) = @_;
373: my $currentstring = '';
374: if ($target eq 'web') {
375: $currentstring = $token->[2];
376: } elsif ($target eq 'tex') {
377: $currentstring .= '}';
378: }
379: if ($target eq 'meta') {
380: &end_output($target);
381: $currentstring='</title>';
382: }
383: return $currentstring;
384: }
385:
386: #-- <meta> tag (end tag forbidden)
387: sub start_meta {
388: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
389: my $currentstring = '';
390: if ($target eq 'web') {
391: my $args='';
392: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
393: if ($args eq '') {
394: &Apache::lonxml::get_all_text("/meta",$parser,$style);
395: } else {
396: $currentstring = $token->[4];
397: }
398: } elsif ($target eq 'meta') {
399: unless (&Apache::lonxml::get_param
400: ('http-equiv',$parstack,$safeeval,undef,1)) {
401: my $name=$token->[2]->{'name'};
402: $name=~tr/A-Z/a-z/;
403: $name=~s/\s/\_/gs;
404: $name=~s/\W//gs;
405: if ($name) {
406: $currentstring='<'.$name;
407: my $display=&Apache::lonxml::get_param
408: ('display',$parstack,$safeeval,undef,1);
409: if ($display) {
410: $display=~s/\"/\'/g;
411: $currentstring.=' display="'.$display.'"';
412: }
413: $currentstring.='>'.
414: &Apache::lonxml::get_param
415: ('content',$parstack,$safeeval,undef,1).
416: '</'.$name.'>';
417: }
418: my $display=&Apache::lonxml::get_param
419: ('display',$parstack,$safeeval,undef,1);
420: if ($display) {
421: $display=&HTML::Entities::encode($display,'<>&"');
422: $currentstring.='<'.$name.'.display>'.$display.
423: '</'.$name.'.display>';
424: }
425: }
426: } elsif ($target eq 'tex') {
427: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
428: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
429: if ((not defined $content) && (not defined $name)) {
430: &Apache::lonxml::startredirection();
431: }
432: }
433: return $currentstring;
434: }
435:
436: sub end_meta {
437: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
438: my $currentstring = '';
439: if ($target eq 'web') {
440: my $args='';
441: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
442: if ($args ne '') {
443: $currentstring = $token->[4];
444: }
445: } elsif ($target eq 'tex') {
446: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
447: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
448: if ((not defined $content) && (not defined $name)) {
449: &Apache::lonxml::endredirection();
450: }
451: }
452: return $currentstring;
453: }
454:
455: # accessrule
456: sub start_accessrule {
457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
458: my $currentstring = '';
459: my $eff=&Apache::lonxml::get_param
460: ('effect',$parstack,$safeeval,undef,1);
461: my $realm=&Apache::lonxml::get_param
462: ('realm',$parstack,$safeeval,undef,1);
463: my $role=&Apache::lonxml::get_param
464: ('role',$parstack,$safeeval,undef,1);
465: $realm=~s/\s+//g;
466: $realm=~s/\//\_/g;
467: $realm=~s/^\_//;
468: $realm=~s/\W/\;/g;
469: $role=~s/\s+//g;
470: $role=~s/\//\_/g;
471: $role=~s/\W/\;/g;
472: if ($target eq 'web') {
473: my $args='';
474: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
475: if ($args eq '') {
476: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
477: } else {
478: $currentstring = $token->[4];
479: }
480: }
481: if ($target eq 'meta') {
482: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
483: }
484: return $currentstring;
485: }
486:
487: sub end_accessrule {
488: my ($target,$token,$tagstack,$parstack,$parser) = @_;
489: my $currentstring = '';
490: if ($target eq 'web') {
491: my $args='';
492: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
493: if ($args ne '') {
494: $currentstring = $token->[4];
495: }
496: }
497: return $currentstring;
498: }
499:
500: #-- <body> tag (end tag required)
501: sub start_body {
502: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
503: my $currentstring = '';
504:
505: if ($target eq 'web') {
506: if ($Apache::lonhomework::parsing_a_problem) {
507: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
508: return '';
509: }
510: if (!$Apache::lonxml::registered &&
511: $env{'request.state'} eq 'published') {
512: $currentstring.='<head>'.
513: &Apache::lonmenu::registerurl(undef,$target).'</head>';
514: }
515: # Accessibility
516: if ($env{'browser.imagesuppress'} eq 'on') {
517: delete($token->[2]->{'background'});
518: }
519: if ($env{'browser.fontenhance'} eq 'on') {
520: my $style='';
521: foreach my $key (keys(%{$token->[2]})) {
522: if ($key =~ /^style$/i) {
523: $style.=$token->[2]->{$key}.';';
524: delete($token->[2]->{$key});
525: }
526: }
527: $token->[2]->{'style'}=$style.'; font-size: x-large;';
528: }
529: if ($env{'browser.blackwhite'} eq 'on') {
530: delete($token->[2]->{'font'});
531: delete($token->[2]->{'link'});
532: delete($token->[2]->{'alink'});
533: delete($token->[2]->{'vlink'});
534: delete($token->[2]->{'bgcolor'});
535: delete($token->[2]->{'background'});
536: }
537: # Overload loads
538: my $onLoad='';
539: foreach my $key (keys(%{$token->[2]})) {
540: if ($key =~ /^onload$/i) {
541: $onLoad.=$token->[2]->{$key}.';';
542: delete($token->[2]->{$key});
543: }
544: }
545: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
546: my $onUnload='';
547: foreach my $key (keys(%{$token->[2]})) {
548: if ($key =~ /^onunload$/i) {
549: $onUnload.=$token->[2]->{$key}.';';
550: delete($token->[2]->{$key});
551: }
552: }
553: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
554: ';'.$onUnload;
555:
556: $currentstring .= '<'.$token->[1];
557: foreach (keys %{$token->[2]}) {
558: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
559: }
560: $currentstring.='>';
561: &Apache::lontexconvert::jsMath_reset();
562: if ($env{'environment.texengine'} eq 'jsMath') {
563: $currentstring.=&Apache::lontexconvert::jsMath_header();
564: }
565: if ($env{'request.state'} ne 'published') {
566: if ($env{'environment.remote'} eq 'off') {
567: $currentstring.=
568: &Apache::lonmenu::constspaceform().
569: &Apache::lonmenu::menubuttons(1,'web',1);
570: }
571: $currentstring.=(<<EDITBUTTON);
572: <form method="post">
573: <input type="submit" name="editmode" accesskey="e" value="Edit" />
574: </form>
575: EDITBUTTON
576: } else {
577: $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
578: }
579: $currentstring.=&Apache::lonxml::message_location();
580: } elsif ($target eq 'tex') {
581: $currentstring = '\begin{document}';
582: }
583: return $currentstring;
584: }
585:
586: sub end_body {
587: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
588: my $currentstring = &end_p(); # Close off unclosed <p>
589: if ($target eq 'web') {
590: $currentstring .= &Apache::lonxml::xmlend($target,$parser);
591: } elsif ($target eq 'tex') {
592: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
593: }
594: return $currentstring;
595: }
596:
597: # \begin{center} causes a new paragprah spacing that looks odd inside
598: # of a table cell
599: sub center_correction { return '\vspace*{-6 mm}'; }
600: #-- <center> tag (end tag required)
601: sub start_center {
602: my ($target,$token,$tagstack) = @_;
603: my $currentstring = &end_p(); # Close off any prior para.
604: if ($target eq 'web') {
605: $currentstring .= $token->[4];
606: } elsif ($target eq 'tex') {
607: if (&is_inside_of($tagstack, "table")) {
608: $currentstring .= ¢er_correction();
609: }
610: $currentstring .= '\begin{center}';
611: }
612: return $currentstring;
613: }
614:
615: sub end_center {
616: my ($target,$token,$tagstack) = @_;
617: my $currentstring = '';
618: if ($target eq 'web') {
619: $currentstring = $token->[2];
620: } elsif ($target eq 'tex') {
621: $currentstring = '\end{center}';
622: if (&is_inside_of($tagstack, "table")) {
623: $currentstring .= ¢er_correction();
624: }
625: }
626: return $currentstring;
627: }
628:
629: #-- <b> tag (end tag required)
630: # NOTE: In TeX mode disables internal <p>
631: sub start_b {
632: my ($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 $currentstring;
641: }
642:
643: sub end_b {
644: my ($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 $currentstring;
653: }
654:
655: #-- <strong> tag (end tag required)
656: # NOTE: in TeX mode disables internal <p>
657: sub start_strong {
658: my ($target,$token) = @_;
659: my $currentstring = '';
660: if ($target eq 'web') {
661: $currentstring = $token->[4];
662: } elsif ($target eq 'tex') {
663: &disable_para();
664: $currentstring = '\textbf{';
665: }
666: return $currentstring;
667: }
668:
669: sub end_strong {
670: my ($target,$token) = @_;
671: my $currentstring = '';
672: if ($target eq 'web') {
673: $currentstring = $token->[2];
674: } elsif ($target eq 'tex') {
675: &enable_para();
676: $currentstring = '}';
677: }
678: return $currentstring;
679: }
680:
681: #-- <h1> tag (end tag required)
682: sub start_h1 {
683: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
684: my $currentstring = &end_p(); # Close off any prior para.
685: if ($target eq 'web') {
686: $currentstring .= $token->[4];
687: } elsif ($target eq 'tex') {
688: my $pre;
689: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
690: if ($align eq 'center') {
691: $pre='\begin{center}';
692: } elsif ($align eq 'left') {
693: $pre='\rlap{';
694: } elsif ($align eq 'right') {
695: $pre=' \hfill \llap{';
696: }
697: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
698: if (not defined $TeXsize) {$TeXsize="large";}
699: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
700: } elsif ($target eq 'meta') {
701: $currentstring.='<subject>';
702: &start_output($target);
703: }
704: return $currentstring;
705: }
706:
707: sub end_h1 {
708: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
709: my $currentstring = '';
710: if ($target eq 'web') {
711: $currentstring .= $token->[2];
712: } elsif ($target eq 'tex') {
713: my $post='\vskip 0 mm ';
714: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
715: if ($align eq 'center') {
716: $post='\end{center}';
717: } elsif ($align eq 'left') {
718: $post='} \hfill'.'\vskip 0 mm ';
719: } elsif ($align eq 'right') {
720: $post='}'.'\vskip 0 mm ';
721: }
722: $currentstring .= '}}'.$post;
723: } elsif ($target eq 'meta') {
724: &end_output($target);
725: $currentstring='</subject>';
726: }
727: return $currentstring;
728: }
729:
730: #-- <h2> tag
731: sub start_h2 {
732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
733: my $currentstring = &end_p(); # Close off any prior para.
734: if ($target eq 'web') {
735: $currentstring .= $token->[4];
736: } elsif ($target eq 'tex') {
737: my $pre;
738: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
739: if ($align eq 'center') {
740: $pre='\begin{center}';
741: } elsif ($align eq 'left') {
742: $pre='\rlap{';
743: } elsif ($align eq 'right') {
744: $pre=' \hfill \llap{';
745: }
746: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
747: if (not defined $TeXsize) {$TeXsize="large";}
748: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
749: }
750: return $currentstring;
751: }
752:
753: sub end_h2 {
754: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
755: my $currentstring = '';
756: if ($target eq 'web') {
757: $currentstring .= $token->[2];
758: } elsif ($target eq 'tex') {
759: my $post='\vskip 0 mm ';
760: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
761: if ($align eq 'center') {
762: $post='\end{center}';
763: } elsif ($align eq 'left') {
764: $post='} \hfill'.'\vskip 0 mm ';
765: } elsif ($align eq 'right') {
766: $post='}'.'\vskip 0 mm ';
767: }
768: $currentstring .= '}}'.$post;
769: }
770: return $currentstring;
771: }
772:
773: #-- <h3> tag
774: sub start_h3 {
775: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
776: my $currentstring = &end_p(); # Close off any prior para.
777: if ($target eq 'web') {
778: $currentstring .= $token->[4];
779: } elsif ($target eq 'tex') {
780: my $pre;
781: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
782: if ($align eq 'center') {
783: $pre='\begin{center}';
784: } elsif ($align eq 'left') {
785: $pre='\rlap{';
786: } elsif ($align eq 'right') {
787: $pre=' \hfill \llap{';
788: }
789: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
790: if (not defined $TeXsize) {$TeXsize="large";}
791: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
792: }
793: return $currentstring;
794: }
795:
796: sub end_h3 {
797: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
798: my $currentstring = '';
799: if ($target eq 'web') {
800: $currentstring .= $token->[2];
801: } elsif ($target eq 'tex') {
802: my $post='\vskip 0 mm ';
803: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
804: if ($align eq 'center') {
805: $post='\end{center}';
806: } elsif ($align eq 'left') {
807: $post='} \hfill'.'\vskip 0 mm ';
808: } elsif ($align eq 'right') {
809: $post='}'.'\vskip 0 mm ';
810: }
811: $currentstring .= '}}'.$post;
812: }
813: return $currentstring;
814: }
815:
816: #-- <h4> tag
817: sub start_h4 {
818: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
819: my $currentstring = &end_p(); # Close off any prior para.
820: if ($target eq 'web') {
821: $currentstring .= $token->[4];
822: } elsif ($target eq 'tex') {
823: my $pre;
824: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
825: if ($align eq 'center') {
826: $pre='\begin{center}';
827: } elsif ($align eq 'left') {
828: $pre='\rlap{';
829: } elsif ($align eq 'right') {
830: $pre=' \hfill \llap{';
831: }
832: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
833: if (not defined $TeXsize) {$TeXsize="large";}
834: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
835: }
836: return $currentstring;
837: }
838:
839: sub end_h4 {
840: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
841: my $currentstring = '';
842: if ($target eq 'web') {
843: $currentstring .= $token->[2];
844: } elsif ($target eq 'tex') {
845: my $post='\vskip 0 mm ';
846: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
847: if ($align eq 'center') {
848: $post='\end{center}';
849: } elsif ($align eq 'left') {
850: $post='} \hfill'.'\vskip 0 mm ';
851: } elsif ($align eq 'right') {
852: $post='}'.'\vskip 0 mm ';
853: }
854: $currentstring .= '}}'.$post;
855: }
856: return $currentstring;
857: }
858:
859: #-- <h5> tag
860: sub start_h5 {
861: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
862: my $currentstring = &end_p(); # Close off any prior paras.
863: if ($target eq 'web') {
864: $currentstring .= $token->[4];
865: } elsif ($target eq 'tex') {
866: my $pre;
867: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
868: if ($align eq 'center') {
869: $pre='\begin{center}';
870: } elsif ($align eq 'left') {
871: $pre='\rlap{';
872: } elsif ($align eq 'right') {
873: $pre=' \hfill \llap{';
874: }
875: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
876: if (not defined $TeXsize) {$TeXsize="large";}
877: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
878: }
879: return $currentstring;
880: }
881:
882: sub end_h5 {
883: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
884: my $currentstring = '';
885: if ($target eq 'web') {
886: $currentstring .= $token->[2];
887: } elsif ($target eq 'tex') {
888: my $post='\vskip 0 mm ';
889: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
890: if ($align eq 'center') {
891: $post='\end{center}';
892: } elsif ($align eq 'left') {
893: $post='} \hfill'.'\vskip 0 mm ';
894: } elsif ($align eq 'right') {
895: $post='}'.'\vskip 0 mm ';
896: }
897: $currentstring .= '}}'.$post;
898: }
899: return $currentstring;
900: }
901:
902: #-- <h6> tag
903: sub start_h6 {
904: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
905: my $currentstring = &end_p(); # Close off any prior paras.
906: if ($target eq 'web') {
907: $currentstring .= $token->[4];
908: } elsif ($target eq 'tex') {
909: my $pre;
910: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
911: if ($align eq 'center') {
912: $pre='\begin{center}';
913: } elsif ($align eq 'left') {
914: $pre='\rlap{';
915: } elsif ($align eq 'right') {
916: $pre=' \hfill \llap{';
917: }
918: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
919: if (not defined $TeXsize) {$TeXsize="large";}
920: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
921: }
922: return $currentstring;
923: }
924:
925: sub end_h6 {
926: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
927: my $currentstring = '';
928: if ($target eq 'web') {
929: $currentstring .= $token->[2];
930: } elsif ($target eq 'tex') {
931: my $post='\vskip 0 mm ';
932: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
933: if ($align eq 'center') {
934: $post='\end{center}';
935: } elsif ($align eq 'left') {
936: $post='} \hfill'.'\vskip 0 mm ';
937: } elsif ($align eq 'right') {
938: $post='}'.'\vskip 0 mm ';
939: }
940: $currentstring .= '}}'.$post;
941: }
942: return $currentstring;
943: }
944:
945: #--- <cite> tag (end tag required)
946: sub start_cite {
947: my ($target,$token) = @_;
948: my $currentstring = '';
949: if ($target eq 'web') {
950: $currentstring .= $token->[4];
951: } elsif ($target eq 'tex') {
952: $currentstring .= '\textit{';
953: }
954: return $currentstring;
955: }
956:
957: sub end_cite {
958: my ($target,$token) = @_;
959: my $currentstring = '';
960: if ($target eq 'web') {
961: $currentstring .= $token->[2];
962: } elsif ($target eq 'tex') {
963: $currentstring .= '}';
964: }
965: return $currentstring;
966: }
967:
968: #-- <i> tag (end tag required)
969: sub start_i {
970: my ($target,$token) = @_;
971: my $currentstring = '';
972: if ($target eq 'web') {
973: $currentstring .= $token->[4];
974: } elsif ($target eq 'tex') {
975: $currentstring .= '\textit{';
976: }
977: return $currentstring;
978: }
979:
980: sub end_i {
981: my ($target,$token) = @_;
982: my $currentstring = '';
983: if ($target eq 'web') {
984: $currentstring .= $token->[2];
985: } elsif ($target eq 'tex') {
986: $currentstring .= '}';
987: }
988: return $currentstring;
989: }
990:
991: #-- <address> tag (end tag required)
992: sub start_address {
993: my ($target,$token) = @_;
994: my $currentstring = '';
995: if ($target eq 'web') {
996: $currentstring .= $token->[4];
997: } elsif ($target eq 'tex') {
998: $currentstring .= '\textit{';
999: }
1000: return $currentstring;
1001: }
1002:
1003: sub end_address {
1004: my ($target,$token) = @_;
1005: my $currentstring = '';
1006: if ($target eq 'web') {
1007: $currentstring .= $token->[2];
1008: } elsif ($target eq 'tex') {
1009: $currentstring .= '}';
1010: }
1011: return $currentstring;
1012: }
1013:
1014: #-- <dfn> tag (end tag required)
1015: sub start_dfn {
1016: my ($target,$token) = @_;
1017: my $currentstring = '';
1018: if ($target eq 'web') {
1019: $currentstring .= $token->[4];
1020: } elsif ($target eq 'tex') {
1021: $currentstring .= '\textit{';
1022: }
1023: return $currentstring;
1024: }
1025:
1026: sub end_dfn {
1027: my ($target,$token) = @_;
1028: my $currentstring = '';
1029: if ($target eq 'web') {
1030: $currentstring .= $token->[2];
1031: } elsif ($target eq 'tex') {
1032: $currentstring .= '}';
1033: }
1034: return $currentstring;
1035: }
1036:
1037: #-- <tt> tag (end tag required)
1038: sub start_tt {
1039: my ($target,$token) = @_;
1040: my $currentstring = '';
1041: if ($target eq 'web') {
1042: $currentstring .= $token->[4];
1043: } elsif ($target eq 'tex') {
1044: $currentstring .= '\texttt{';
1045: }
1046: return $currentstring;
1047: }
1048:
1049: sub end_tt {
1050: my ($target,$token) = @_;
1051: my $currentstring = '';
1052: if ($target eq 'web') {
1053: $currentstring .= $token->[2];
1054: } elsif ($target eq 'tex') {
1055: $currentstring .= '}';
1056: }
1057: return $currentstring;
1058: }
1059:
1060: #-- <kbd> tag (end tag required)
1061: sub start_kbd {
1062: my ($target,$token) = @_;
1063: my $currentstring = '';
1064: if ($target eq 'web') {
1065: $currentstring .= $token->[4];
1066: } elsif ($target eq 'tex') {
1067: $currentstring .= '\texttt{';
1068: }
1069: return $currentstring;
1070: }
1071:
1072: sub end_kbd {
1073: my ($target,$token) = @_;
1074: my $currentstring = '';
1075: if ($target eq 'web') {
1076: $currentstring .= $token->[2];
1077: } elsif ($target eq 'tex') {
1078: $currentstring .= '}';
1079: }
1080: return $currentstring;
1081: }
1082:
1083: #-- <code> tag (end tag required)
1084: sub start_code {
1085: my ($target,$token) = @_;
1086: my $currentstring = '';
1087: if ($target eq 'web') {
1088: $currentstring .= $token->[4];
1089: } elsif ($target eq 'tex') {
1090: $currentstring .= '\texttt{';
1091: }
1092: return $currentstring;
1093: }
1094:
1095: sub end_code {
1096: my ($target,$token) = @_;
1097: my $currentstring = '';
1098: if ($target eq 'web') {
1099: $currentstring .= $token->[2];
1100: } elsif ($target eq 'tex') {
1101: $currentstring .= '}';
1102: }
1103: return $currentstring;
1104: }
1105:
1106: #-- <em> tag (end tag required)
1107: sub start_em {
1108: my ($target,$token) = @_;
1109: my $currentstring = '';
1110: if ($target eq 'web') {
1111: $currentstring .= $token->[4];
1112: } elsif ($target eq 'tex') {
1113: $currentstring .= '\emph{';
1114: }
1115: return $currentstring;
1116: }
1117:
1118: sub end_em {
1119: my ($target,$token) = @_;
1120: my $currentstring = '';
1121: if ($target eq 'web') {
1122: $currentstring .= $token->[2];
1123: } elsif ($target eq 'tex') {
1124: $currentstring .= '}';
1125: }
1126: return $currentstring;
1127: }
1128:
1129: #-- <q> tag (end tag required)
1130: sub start_q {
1131: my ($target,$token) = @_;
1132: my $currentstring = '';
1133: if ($target eq 'web') {
1134: $currentstring .= $token->[4];
1135: } elsif ($target eq 'tex') {
1136: $currentstring .= '\emph{';
1137: }
1138: return $currentstring;
1139: }
1140:
1141: sub end_q {
1142: my ($target,$token) = @_;
1143: my $currentstring = '';
1144: if ($target eq 'web') {
1145: $currentstring .= $token->[2];
1146: } elsif ($target eq 'tex') {
1147: $currentstring .= '}';
1148: }
1149: return $currentstring;
1150: }
1151:
1152: # <p> is a bit strange since it does not require a closing </p>
1153: # However in latex, we must often output closing stuff to end
1154: # environments and {}'s etc. Therefore we do all the work
1155: # of figuring out the ending strings in the start tag processing,
1156: # and provide a mechanism to output the stop text external
1157: # to tag processing.
1158: #
1159: {
1160:
1161: my $closing_string = ''; # String required to close <p>
1162:
1163: # Some tags are <p> fragile meaning that <p> inside of them
1164: # does not work within TeX mode. This is managed via the
1165: # counter below:
1166: #
1167:
1168: my $para_disabled = 0;
1169:
1170: sub disable_para {
1171: $para_disabled++;
1172: }
1173: sub enable_para {
1174: $para_disabled--;
1175: }
1176:
1177:
1178: #-- <p> tag (end tag optional)
1179: #optional attribute - align="center|left|right"
1180: sub start_p {
1181: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1182: my $currentstring = '';
1183: if ($target eq 'web') {
1184: $currentstring .= &end_p(); # close off prior para if in progress.
1185: $currentstring .= $token->[4];
1186: if (! ($currentstring =~ /\//)) {
1187: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1188: }
1189: } elsif ($target eq 'tex' && !$para_disabled) {
1190: $currentstring .= &end_p(); # close off prior para if in progress.
1191: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1192: if ($align eq 'center') {
1193: $currentstring .='\begin{center}\par';
1194: $closing_string = '\end{center}';
1195: if (&is_inside_of($tagstack, "table")) {
1196: $currentstring = ¢er_correction().$currentstring;
1197: $closing_string .= ¢er_correction();
1198: }
1199: } elsif ($align eq 'right') {
1200: $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1201: $closing_string= '}}';
1202: } elsif ($align eq 'left') {
1203: $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
1204: $closing_string = '}\hfill}';
1205: } else {
1206: $currentstring.='\par ';
1207: $closing_string = '\strut\\\\\strut ';
1208: }
1209:
1210: }
1211: return $currentstring;
1212: }
1213: #
1214: # End paragraph processing just requires that we output the
1215: # closing string that was saved and blank it.
1216: sub end_p {
1217: # Note only 'tex' mode uses disable_para and enable_para
1218: # so we don't need to know the target in the check below:
1219:
1220: if (!$para_disabled) {
1221: my $current_string = $closing_string;
1222: $closing_string = ''; # Not in a para anymore.
1223: return $current_string;
1224: } else {
1225: return '';
1226: }
1227:
1228: }
1229: }
1230: #-- <br> tag (end tag forbidden)
1231: sub start_br {
1232: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1233: my $currentstring = '';
1234: if ($target eq 'web') {
1235: $currentstring .= $token->[4];
1236: } elsif ($target eq 'tex') {
1237: my @tempo=@$tagstack;
1238: my $signal=0;
1239: # Not going to factor this to is_inside_of since that would require
1240: # multiple stack traversals.
1241: #
1242: for (my $i=$#tempo;$i>=0;$i--) {
1243: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1244: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1245: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1246: $signal=1;
1247: last;
1248: }
1249: }
1250: if ($signal) {
1251: $currentstring .= ' \vskip 0 mm ';
1252: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1253: $currentstring .= '\strut \\\\ \strut ';
1254: }
1255: }
1256: return $currentstring;
1257: }
1258:
1259: sub end_br {
1260: my ($target,$token) = @_;
1261: my $currentstring = '';
1262: if ($target eq 'web') {
1263: $currentstring .= $token->[2];
1264: }
1265: return $currentstring;
1266: }
1267:
1268: #-- <big> tag (end tag required)
1269: sub start_big {
1270: my ($target,$token) = @_;
1271: my $currentstring = '';
1272: if ($target eq 'web') {
1273: $currentstring .= $token->[4];
1274: } elsif ($target eq 'tex') {
1275: $currentstring .= '{\large ';
1276: }
1277: return $currentstring;
1278: }
1279:
1280: sub end_big {
1281: my ($target,$token) = @_;
1282: my $currentstring = '';
1283: if ($target eq 'web') {
1284: $currentstring .= $token->[2];
1285: } elsif ($target eq 'tex') {
1286: $currentstring .= '}';
1287: }
1288: return $currentstring;
1289: }
1290:
1291: #-- <small> tag (end tag required)
1292: sub start_small {
1293: my ($target,$token) = @_;
1294: my $currentstring = '';
1295: if ($target eq 'web') {
1296: $currentstring .= $token->[4];
1297: } elsif ($target eq 'tex') {
1298: $currentstring .= '{\footnotesize ';
1299: }
1300: return $currentstring;
1301: }
1302:
1303: sub end_small {
1304: my ($target,$token) = @_;
1305: my $currentstring = '';
1306: if ($target eq 'web') {
1307: $currentstring .= $token->[2];
1308: } elsif ($target eq 'tex') {
1309: $currentstring .= '}';
1310: }
1311: return $currentstring;
1312: }
1313:
1314: #-- <basefont> tag (end tag forbidden)
1315: sub start_basefont {
1316: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1317: my $currentstring = '';
1318: if ($target eq 'web') {
1319: $currentstring = $token->[4];
1320: } elsif ($target eq 'tex') {
1321: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1322: if (defined $basesize) {
1323: $currentstring = '{\\'.$basesize.' ';
1324: }
1325: }
1326: return $currentstring;
1327: }
1328:
1329: sub end_basefont {
1330: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1331: my $currentstring = '';
1332: if ($target eq 'web') {
1333: $currentstring = $token->[4];
1334: } elsif ($target eq 'tex') {
1335: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1336: if (defined $basesize) {
1337: $currentstring = '}';
1338: }
1339: }
1340: return $currentstring;
1341: }
1342:
1343: #-- <font> tag (end tag required)
1344: sub start_font {
1345: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1346: my $currentstring = '';
1347: if ($target eq 'web') {
1348: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1349: if ($face!~/symbol/i) {
1350: if (($env{'browser.fontenhance'} eq 'on') ||
1351: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1352: }
1353: $currentstring = $token->[4];
1354: } elsif ($target eq 'tex') {
1355: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1356: if (defined $fontsize) {
1357: $currentstring = '{\\'.$fontsize.' ';
1358: }
1359: }
1360: return $currentstring;
1361: }
1362:
1363: sub end_font {
1364: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1365: my $currentstring = '';
1366: if ($target eq 'web') {
1367: $currentstring = $token->[2];
1368: } elsif ($target eq 'tex') {
1369: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1370: if (defined $fontsize) {
1371: $currentstring = '}';
1372: }
1373: }
1374: return $currentstring;
1375: }
1376:
1377: #-- <strike> tag (end tag required)
1378: sub start_strike {
1379: my ($target,$token) = @_;
1380: my $currentstring = '';
1381: if ($target eq 'web') {
1382: $currentstring .= $token->[4];
1383: } elsif ($target eq 'tex') {
1384: &Apache::lonxml::startredirection();
1385: }
1386: return $currentstring;
1387: }
1388:
1389: sub end_strike {
1390: my ($target,$token) = @_;
1391: my $currentstring = '';
1392: if ($target eq 'web') {
1393: $currentstring .= $token->[2];
1394: } elsif ($target eq 'tex') {
1395: $currentstring=&Apache::lonxml::endredirection();
1396: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1397: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1398: $currentstring=~s/(\S)\s*$/$1\}/;
1399: }
1400: return $currentstring;
1401: }
1402:
1403: #-- <s> tag (end tag required)
1404: sub start_s {
1405: my ($target,$token) = @_;
1406: my $currentstring = '';
1407: if ($target eq 'web') {
1408: $currentstring .= $token->[4];
1409: } elsif ($target eq 'tex') {
1410: &Apache::lonxml::startredirection();
1411: }
1412: return $currentstring;
1413: }
1414:
1415: sub end_s {
1416: my ($target,$token) = @_;
1417: my $currentstring = '';
1418: if ($target eq 'web') {
1419: $currentstring .= $token->[2];
1420: } elsif ($target eq 'tex') {
1421: $currentstring=&Apache::lonxml::endredirection();
1422: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1423: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1424: $currentstring=~s/(\S)\s*$/$1\}/;
1425: }
1426: return $currentstring;
1427: }
1428:
1429: #-- <sub> tag (end tag required)
1430: sub start_sub {
1431: my ($target,$token) = @_;
1432: my $currentstring = '';
1433: if ($target eq 'web') {
1434: $currentstring .= $token->[4];
1435: } elsif ($target eq 'tex') {
1436: $currentstring .= '\ensuremath{_{';
1437: }
1438: return $currentstring;
1439: }
1440:
1441: sub end_sub {
1442: my ($target,$token) = @_;
1443: my $currentstring = '';
1444: if ($target eq 'web') {
1445: $currentstring .= $token->[2];
1446: } elsif ($target eq 'tex') {
1447: $currentstring .= '}}';
1448: }
1449: return $currentstring;
1450: }
1451:
1452: #-- <sup> tag (end tag required)
1453: sub start_sup {
1454: my ($target,$token) = @_;
1455: my $currentstring = '';
1456: if ($target eq 'web') {
1457: $currentstring .= $token->[4];
1458: } elsif ($target eq 'tex') {
1459: $currentstring .= '\ensuremath{^{';
1460: }
1461: return $currentstring;
1462: }
1463:
1464: sub end_sup {
1465: my ($target,$token) = @_;
1466: my $currentstring = '';
1467: if ($target eq 'web') {
1468: $currentstring .= $token->[2];
1469: } elsif ($target eq 'tex') {
1470: $currentstring .= '}}';
1471: }
1472: return $currentstring;
1473: }
1474:
1475: #-- <hr> tag (end tag forbidden)
1476: sub start_hr {
1477: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1478: my $currentstring = &end_p(); # End enclosing para.
1479: if ($target eq 'web') {
1480: $currentstring .= $token->[4];
1481: } elsif ($target eq 'tex') {
1482: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1483: if (defined $LaTeXwidth) {
1484: if ($LaTeXwidth=~/^%/) {
1485: substr($LaTeXwidth,0,1)='';
1486: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1487: }
1488: } else {
1489: $LaTeXwidth ='0.9\textwidth';
1490: }
1491: my ($pre,$post);
1492: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1493: if (($align eq 'center') || (not defined $align)) {
1494: $pre=''; $post='';
1495: } elsif ($align eq 'left') {
1496: $pre='\rlap{'; $post='} \hfill';
1497: } elsif ($align eq 'right') {
1498: $pre=' \hfill \llap{'; $post='}';
1499: }
1500: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1501: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1502: }
1503: return $currentstring;
1504: }
1505:
1506: sub end_hr {
1507: my ($target,$token) = @_;
1508: my $currentstring = '';
1509: if ($target eq 'web') {
1510: $currentstring .= $token->[2];
1511: }
1512: return $currentstring;
1513: }
1514:
1515: #-- <div> tag (end tag required)
1516: {
1517:
1518: # Since div can be nested, the stack below is used
1519: # in 'tex' mode to store the ending strings
1520: # for the div stack.
1521:
1522: my @div_end_stack;
1523:
1524: sub start_div {
1525: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1526: my $currentstring = &end_p(); # Close enclosing para.
1527: if ($target eq 'web') {
1528: $currentstring .= $token->[4];
1529: }
1530: if ($target eq 'tex') {
1531: # 4 possible alignments: left, right, center, and -missing-.
1532:
1533: my $endstring = '';
1534:
1535: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1536: $safeeval, undef, 1));
1537: if ($align eq 'center') {
1538: $currentstring .= '\begin{center}';
1539: $endstring = '\end{center}';
1540: if (&is_inside_of($tagstack, "table")) {
1541: $currentstring = ¢er_correction().$currentstring;
1542: $endstring .= ¢er_correction();
1543: }
1544: }
1545: elsif ($align eq 'right') {
1546: $currentstring .= '\begin{flushright}';
1547: $endstring .= '\end{flushright}';
1548: } elsif ($align eq 'left') {
1549: $currentstring .= '\begin{flushleft}';
1550: $endstring = '\end{flushleft}';
1551: } else {
1552:
1553: }
1554: $currentstring .= "\n"; # For human readability.
1555: $endstring = "\n$endstring\n"; # For human readability
1556: push(@div_end_stack, $endstring);
1557: }
1558: return $currentstring;
1559: }
1560:
1561: sub end_div {
1562: my ($target,$token) = @_;
1563: my $currentstring = '';
1564: if ($target eq 'web') {
1565: $currentstring .= $token->[2];
1566: }
1567: if ($target eq 'tex') {
1568: my $endstring = pop @div_end_stack;
1569: $currentstring .= $endstring;
1570: }
1571: return $currentstring;
1572: }
1573: }
1574:
1575: #-- <a> tag (end tag required)
1576: sub start_a {
1577: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1578: my $currentstring = '';
1579: if ($target eq 'web') {
1580: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1581: undef,1);
1582: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1583: } elsif ($target eq 'tex') {
1584: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1585: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1586: if ($a=~/\S/) {
1587: $a=~s/([^\\])%/$1\\\%/g;
1588: $currentstring .= '\ref{URI: '.$a.'}';
1589: } elsif ($b=~/\S/) {
1590: $currentstring .= '\ref{Anchor: '.$b.'}';
1591: } else {
1592: $currentstring.='';
1593: }
1594: }
1595: return $currentstring;
1596: }
1597:
1598: sub end_a {
1599: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1600: my $currentstring = '';
1601: if ($target eq 'web') {
1602: $currentstring .= $token->[2];
1603: }
1604: return $currentstring;
1605: }
1606:
1607: #-- <li> tag (end tag optional)
1608: sub start_li {
1609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1610: my $currentstring = '';
1611: if ($target eq 'web') {
1612: $currentstring = $token->[4];
1613: } elsif ($target eq 'tex') {
1614: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1615: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1616: #FIXME need to support types i and I
1617: if ($type=~/disc/) {
1618: $currentstring .= ' \item[$\bullet$] ';
1619: } elsif ($type=~/circle/) {
1620: $currentstring .= ' \item[$\circ$] ';
1621: } elsif ($type=~/square/) {
1622: $currentstring .= ' \item[$\diamond$] ';
1623: } elsif ($type eq '1') {
1624: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1625: } elsif ($type eq 'A') {
1626: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1627: } elsif ($type eq 'a') {
1628: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1629: } elsif ($value ne '') {
1630: $currentstring .= ' \item['.$value.'] ';
1631: } else {
1632: $currentstring .= ' \item ';
1633: }
1634: $Apache::londefdef::list_index++;
1635: }
1636: return $currentstring;
1637: }
1638:
1639: sub end_li {
1640: my ($target,$token) = @_;
1641: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1642: if ($target eq 'web') {
1643: $currentstring .= $token->[2];
1644: }
1645: return $currentstring;
1646: }
1647:
1648: #-- <u> tag (end tag required)
1649: sub start_u {
1650: my ($target,$token) = @_;
1651: my $currentstring = '';
1652: if ($target eq 'web') {
1653: $currentstring .= $token->[4];
1654: } elsif ($target eq 'tex') {
1655: &Apache::lonxml::startredirection();
1656: }
1657: return $currentstring;
1658: }
1659:
1660: sub end_u {
1661: my ($target,$token) = @_;
1662: my $currentstring = '';
1663: if ($target eq 'web') {
1664: $currentstring .= $token->[2];
1665: } elsif ($target eq 'tex') {
1666: $currentstring=&Apache::lonxml::endredirection();
1667: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1668: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1669: $currentstring=~s/(\S)\s*$/$1\}/;
1670: }
1671: return $currentstring;
1672: }
1673:
1674: #-- <ul> tag (end tag required)
1675: sub start_ul {
1676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1677: my $currentstring = &end_p(); # Close off enclosing list.
1678: if ($target eq 'web') {
1679: $currentstring .= $token->[4];
1680: } elsif ($target eq 'tex') {
1681: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1682: $Apache::londefdef::list_index=0;
1683: if ($TeXtype eq 'disc') {
1684: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1685: '\renewcommand{\labelitemii}{$\bullet$}'.
1686: '\renewcommand{\labelitemiii}{$\bullet$}'.
1687: '\renewcommand{\labelitemiv}{$\bullet$}';
1688: } elsif ($TeXtype eq 'circle') {
1689: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1690: '\renewcommand{\labelitemii}{$\circ$}'.
1691: '\renewcommand{\labelitemiii}{$\circ$}'.
1692: '\renewcommand{\labelitemiv}{$\circ$}';
1693: } elsif ($TeXtype eq 'square') {
1694: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1695: '\renewcommand{\labelitemii}{$\diamond$}'.
1696: '\renewcommand{\labelitemiii}{$\diamond$}'.
1697: '\renewcommand{\labelitemiv}{$\diamond$}';
1698: }
1699: $currentstring .= '\strut \begin{itemize}';
1700: }
1701: return $currentstring;
1702: }
1703:
1704: sub end_ul {
1705: my ($target,$token) = @_;
1706: my $currentstring = '';
1707: if ($target eq 'web') {
1708: $currentstring = $token->[2];
1709: } elsif ($target eq 'tex') {
1710: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1711: '\renewcommand{\labelitemii}{$\bullet$}'.
1712: '\renewcommand{\labelitemiii}{$\bullet$}'.
1713: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1714: }
1715: return $currentstring;
1716: }
1717:
1718: #-- <menu> tag (end tag required)
1719: sub start_menu {
1720: my ($target,$token) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web') {
1723: $currentstring = $token->[4];
1724: } elsif ($target eq 'tex') {
1725: $currentstring = " \\begin{itemize} ";
1726: }
1727: return $currentstring;
1728: }
1729:
1730: sub end_menu {
1731: my ($target,$token) = @_;
1732: my $currentstring = '';
1733: if ($target eq 'web') {
1734: $currentstring = $token->[2];
1735: } elsif ($target eq 'tex') {
1736: $currentstring = " \\end{itemize}";
1737: }
1738: return $currentstring;
1739: }
1740:
1741: #-- <dir> tag (end tag required)
1742: sub start_dir {
1743: my ($target,$token) = @_;
1744: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1745: if ($target eq 'web') {
1746: $currentstring .= $token->[4];
1747: } elsif ($target eq 'tex') {
1748: $currentstring .= " \\begin{itemize} ";
1749: }
1750: return $currentstring;
1751: }
1752:
1753: sub end_dir {
1754: my ($target,$token) = @_;
1755: my $currentstring = '';
1756: if ($target eq 'web') {
1757: $currentstring = $token->[2];
1758: } elsif ($target eq 'tex') {
1759: $currentstring = " \\end{itemize}";
1760: }
1761: return $currentstring;
1762: }
1763:
1764: #-- <ol> tag (end tag required)
1765: sub start_ol {
1766: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1767: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1768: if ($target eq 'web') {
1769: $currentstring .= $token->[4];
1770: } elsif ($target eq 'tex') {
1771: $Apache::londefdef::list_index=0;
1772: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1773: if ($type eq '1') {
1774: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1775: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1776: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1777: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1778: } elsif ($type eq 'A') {
1779: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1780: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1781: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1782: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1783: } elsif ($type eq 'a') {
1784: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1785: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1786: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1787: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1788: } elsif ($type eq 'i') {
1789: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1790: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1791: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1792: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1793: } elsif ($type eq 'I') {
1794: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1795: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1796: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1797: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1798: }
1799: $currentstring .= '\strut \begin{enumerate}';
1800: }
1801: return $currentstring;
1802: }
1803:
1804: sub end_ol {
1805: my ($target,$token) = @_;
1806: my $currentstring = '';
1807: if ($target eq 'web') {
1808: $currentstring = $token->[2];
1809: } elsif ($target eq 'tex') {
1810: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1811: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1812: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1813: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1814: }
1815: return $currentstring;
1816: }
1817:
1818: #-- <dl> tag (end tag required)
1819: sub start_dl {
1820: my ($target,$token) = @_;
1821: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1822: if ($target eq 'web') {
1823: $currentstring .= $token->[4];
1824: } elsif ($target eq 'tex') {
1825: $currentstring .= '\begin{description}';
1826: $Apache::londefdef::DL++;
1827: push(@Apache::londefdef::description,[]);
1828: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1829: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1830: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1831: }
1832: return $currentstring;
1833: }
1834:
1835: sub end_dl {
1836: my ($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 ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1842: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1843: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1844: $currentstring.=' '.$element.' ';
1845: }
1846: pop(@Apache::londefdef::description);
1847: $currentstring.='\end{description}';
1848: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1849: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1850: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1851: $Apache::londefdef::DL--;
1852: }
1853: return $currentstring;
1854: }
1855:
1856: #-- <dt> tag (end tag optional)
1857: sub start_dt {
1858: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1859: my $currentstring='';
1860: if ($target eq 'web') {
1861: $currentstring = $token->[4];
1862: } elsif ($target eq 'tex') {
1863: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1864: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1865: &Apache::lonxml::startredirection();
1866: $Apache::londefdef::DT[-1]++;
1867: $Apache::londefdef::seenDT[-1]=1;
1868: }
1869: return $currentstring;
1870: }
1871:
1872: sub end_dt {
1873: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1874: my $currentstring = '';
1875: if ($target eq 'web') {
1876: $currentstring = $token->[2];
1877: } elsif ($target eq 'tex') {
1878: if ($Apache::londefdef::DT[-1]) {
1879: my $data=&item_cleanup();
1880: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1881: $Apache::londefdef::DT[-1]--;
1882: }
1883: }
1884: return $currentstring;
1885: }
1886:
1887: sub item_cleanup {
1888: my $item=&Apache::lonxml::endredirection();
1889: $item=~s/\\begin{center}//g;
1890: $item=~s/\\end{center}//g;
1891: return $item;
1892: }
1893:
1894: #-- <dd> tag (end tag optional)
1895: sub start_dd {
1896: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1897: my $currentstring = '';
1898: if ($target eq 'web') {
1899: $currentstring = $token->[4];
1900: } elsif ($target eq 'tex') {
1901: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1902: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1903: if (!$Apache::londefdef::seenDT[-1]) {
1904: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1905: }
1906: push(@{$Apache::londefdef::description[-1]},'');
1907: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1908: $Apache::londefdef::DD[-1]++;
1909: &Apache::lonxml::startredirection();
1910: }
1911: return $currentstring;
1912: }
1913:
1914: sub end_dd {
1915: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1916: my $currentstring = '';
1917: if ($target eq 'web') {
1918: $currentstring = $token->[2];
1919: } elsif ($target eq 'tex') {
1920: $Apache::londefdef::description[-1]->[-1].=
1921: &Apache::lonxml::endredirection().' \vskip 0mm ';
1922: $Apache::londefdef::DD[-1]--;
1923: }
1924: return $currentstring;
1925: }
1926:
1927: #-- <table> tag (end tag required)
1928: # <table> also ends any prior <p> that is not closed.
1929: # but, unless I allow <p>'s to nest, that's the
1930: # only way I could think of to allow <p> in
1931: # <tr> <th> bodies
1932: #
1933: #list of supported attributes: border,width,TeXwidth
1934: sub start_table {
1935: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1936: my $textwidth = '';
1937: my $currentstring = &end_p();
1938: if ($target eq 'web') {
1939: $currentstring .= $token->[4];
1940: } elsif ($target eq 'tex') {
1941: my $aa = {};
1942: push @Apache::londefdef::table, $aa;
1943: $Apache::londefdef::table[-1]{'row_number'} = -1;
1944: #maximum table's width (default coincides with text line length)
1945: if ($#Apache::londefdef::table==0) {
1946: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1947: $textwidth=~/(\d+\.?\d*)/;
1948: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1949: } else {
1950: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1951: #the maximum width of nested table is determined by LATeX width of parent cell
1952: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1953: } else {
1954: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1955: $textwidth=$Apache::londefdef::table[-2]{'width'};
1956: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1957: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1958: }
1959: }
1960: }
1961:
1962: # width either comes forced from the TeXwidth or the width parameters.
1963: # in either case it can be a percentage or absolute width.
1964: # in the width case we ignore absolute width
1965: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1966: if (!defined($TeXwidth)) {
1967: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
1968: $safeeval,undef,1);
1969: if ($htmlwidth =~ /%/) {
1970: $TeXwidth = $htmlwidth;
1971: } else {
1972: $TeXwidth = $textwidth;
1973: }
1974: } else {
1975: $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
1976: }
1977: if ($TeXwidth=~/%/) {
1978: $Apache::londefdef::table[-1]{'percent'}=1;
1979: $TeXwidth=~/(\d+)/;
1980: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1981: } else {
1982: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1983: }
1984:
1985: #table's border
1986: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1987: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1988: unless (defined $border) { $border = 0; }
1989: if ($border) {
1990: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1991: $Apache::londefdef::table[-1]{'vinc'} = '&';
1992: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1993: } else {
1994: $Apache::londefdef::table[-1]{'hinc'} = '';
1995: $Apache::londefdef::table[-1]{'vinc'} = '&';
1996: $Apache::londefdef::table[-1]{'vvinc'} = '';
1997: }
1998: if ($#Apache::londefdef::table==0) {
1999: # Note that \newline seems to destroy the alignment envs.
2000: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
2001: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
2002: }
2003: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
2004: $Apache::londefdef::table[-1]{'TeXlen'}=[];
2005: $Apache::londefdef::table[-1]{'objectlen'}=[];
2006: $Apache::londefdef::table[-1]{'objectsignal'}=[];
2007: $Apache::londefdef::table[-1]{'maxlen'}=[];
2008: $Apache::londefdef::table[-1]{'minlen'}=[];
2009: $Apache::londefdef::table[-1]{'content'}=[];
2010: $Apache::londefdef::table[-1]{'align'}=[];
2011: $currentstring.='\keephidden{NEW TABLE ENTRY}';
2012:
2013:
2014: }
2015: return $currentstring;
2016: }
2017:
2018: sub end_table {
2019: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2020: my $currentstring = '';
2021: if ($target eq 'web') {
2022: $currentstring = $token->[2];
2023: } elsif ($target eq 'tex') {
2024: my $inmemory = '';
2025: my $output = '';
2026: my $WARNING='';
2027: # &debug_dump_table($Apache::londefdef::table[-1]);
2028: #width of columns from TeXwidth attributes
2029:
2030: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2031: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2032: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2033: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2034: }
2035: }
2036: }
2037: #free space and number of empty columns
2038: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2039: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2040: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2041: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2042: $empty_columns++;
2043: } else {
2044: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2045: }
2046: }
2047: #boundaries for contents columns
2048: my @min_len=();#columns can not be narrower
2049: my @max_len=();#maximum length of column
2050: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2051: my ($localmin,$localmax)=(0,0);
2052: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2053: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2054: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2055: }
2056: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2057: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2058: }
2059: }
2060: push @min_len, $localmin;
2061: push @max_len, $localmax;
2062: }
2063: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2064: my $localmin=0,;
2065: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2066: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2067: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2068: }
2069: }
2070: if ($max_len[$jn]<$localmin) {
2071: $max_len[$jn]=$localmin;
2072: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2073: }#object size is bigger
2074: if ($min_len[$jn]<$localmin) {
2075: $min_len[$jn]=$localmin;
2076: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2077: }#object size is bigger
2078: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2079: $min_len[$jn]=0;
2080: $max_len[$jn]=0;
2081: }
2082: }
2083: #final adjustment of column width
2084: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2085: my @adjust=();
2086: #step 1. adjustment by maximum value
2087: my $space_neeeded=0;
2088: for (my $jn=0;$jn<=$#max_len;$jn++) {
2089: $space_neeeded=$space_neeeded+$max_len[$jn];
2090: }
2091: if ($space_neeeded<=$available_space) {
2092: for (my $jn=0;$jn<=$#max_len;$jn++) {
2093: if ($fwidth[$jn]==0) {
2094: $fwidth[$jn]=$max_len[$jn];
2095: }
2096: }
2097: } else {
2098: #step 2. adjustment by minimum value (estimation)
2099: $space_neeeded=0;
2100: for (my $jn=0;$jn<=$#min_len;$jn++) {
2101: $space_neeeded+=$min_len[$jn];
2102: }
2103: if ($space_neeeded>$available_space) {
2104: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2105: for (my $jn=0;$jn<=$#max_len;$jn++) {
2106: if ($fwidth[$jn]==0) {
2107: $fwidth[$jn]=$min_len[$jn];
2108: }
2109: }
2110: #check if we have objects which can be scaled
2111: my $how_many_to_scale=0;
2112: my @to_scale=();
2113: for (my $jn=0;$jn<=$#max_len;$jn++) {
2114: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2115: $how_many_to_scale++;
2116: push @to_scale, $jn;
2117: }
2118: }
2119: if ($how_many_to_scale>0) {
2120: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2121: foreach my $jn (@to_scale) {
2122: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2123: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2124: if ($1 ne '') {
2125: my $current_length=&recalc($1);
2126: $current_length=~/(\d+\.?\d*)/;
2127: $current_length=$current_length-$space_to_adjust;
2128: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2129: }
2130: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2131: if ($1 ne '') {
2132: my $current_length=$1;
2133: $current_length=$current_length-$space_to_adjust;
2134: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2135: }
2136: }
2137: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2138: }
2139: }
2140: } else {
2141: #step 3. adjustment over minimal + corrections
2142: my $enlarge_coef=$available_space/$space_neeeded;
2143: my $acsessive=0;
2144: for (my $jn=0;$jn<=$#min_len;$jn++) {
2145: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2146: if ($adjust[$jn]>$max_len[$jn]) {
2147: $fwidth[$jn]=$max_len[$jn];
2148: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2149: $adjust[$jn]=0;
2150: }
2151: }
2152: if ($acsessive>0) {
2153: #we have an excess of space and can redistribute it
2154: my $notempty_columns=0;
2155: for (my $jn=0;$jn<=$#min_len;$jn++) {
2156: if ($adjust[$jn]!=0) {
2157: $notempty_columns++;
2158: }
2159: }
2160: my $per_column=$acsessive/$notempty_columns;
2161: for (my $jn=0;$jn<=$#min_len;$jn++) {
2162: if ($adjust[$jn]!=0) {
2163: $adjust[$jn]+=$per_column;
2164: $fwidth[$jn]=$adjust[$jn];
2165: }
2166: }
2167: } else {
2168: for (my $jn=0;$jn<=$#min_len;$jn++) {
2169: $fwidth[$jn]=$adjust[$jn];
2170: }
2171: }
2172: }
2173: }
2174: #use all available width if it is defined in % or as TeXwidth
2175: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2176: my $current=0;
2177: for (my $i=0;$i<=$#fwidth;$i++) {
2178: $current+=$fwidth[$i];
2179: }
2180: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2181: for (my $i=0;$i<=$#fwidth;$i++) {
2182: $fwidth[$i]*=$coef;
2183: }
2184: }
2185: #removing of empty columns if allowed
2186: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2187: if ($permission eq 'yes') {
2188: my @cleaned_table=();
2189: my @cleaned_header=();
2190: my $colind=0;
2191: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2192: if ($fwidth[$jn]!=0) {
2193: #we need to copy column
2194: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2195: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2196: $cleaned_header[$colind]=$fwidth[$jn];
2197: }
2198: $colind++;
2199: }
2200: }
2201: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2202: @fwidth=@cleaned_header;
2203: }
2204: #construct header of the table
2205: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2206: for (my $in=0;$in<=$#fwidth;$in++) {
2207: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2208: }
2209: $header_of_table .= '}';
2210: #fill the table
2211: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2212: my $have_rowspan = 0;
2213: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2214: #
2215: # Do the appropriate magic if this has a colspan
2216: #
2217: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2218: if ($colspan > 1) {
2219: $output .= '\multicolumn{'.
2220: $colspan
2221: .'}{|l|}{';
2222: }
2223: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2224:
2225: # Start a rowspan if necessary:
2226:
2227: if ($rowspan > 1) {
2228: $have_rowspan++;
2229: $output .= '\multirow{'.$rowspan.'}[0]{'.$fwidth[$jn].'mm}{';
2230: }
2231: if (($rowspan eq '^') || ($rowspan eq '_')) {
2232: $have_rowspan++;
2233: }
2234:
2235: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2236: $output.=¢er_correction().'\begin{center}';
2237: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2238: $output.=' \hfill \llap{'
2239: }
2240: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2241: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2242: $output.='\end{center}'.¢er_correction();
2243: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2244: $output.='} ';
2245: }
2246: # Close off any open multirow:
2247:
2248: if ($rowspan > 1) {
2249: $output .= '}';
2250: }
2251: # Close off the colspan...
2252: #
2253: if ($colspan > 1) {
2254: $output .= '}';
2255: $jn += $colspan-1; # Adjust for number of rows really left.
2256: }
2257: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2258: }
2259: # If have_rowspan > 0, and borders are on, then
2260: # we need to do more than put an \hline at the bottom of row.
2261: # we need to do the appropriate \cline to ensure that
2262: # the spanned rows don't have \hlines through them.
2263:
2264: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2265: $output .= ' \\\\ ';
2266: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2267: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2268: if (($rowspan <= 1) || ($rowspan eq '_')) {
2269: my $column = $jn+1;
2270: $output .= '\cline{'.$column.'-'.$column.'} ';
2271: }
2272: }
2273:
2274: } else {
2275: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2276: }
2277: }
2278: # Note that \newline destroys alignment env's produced by e.g. <div>
2279: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2280: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2281: if ($#Apache::londefdef::table > 0) {
2282: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2283: # Figure out max/and min width by summing us and then
2284: # apply that to the current column of the table we nest in
2285: # if it's larger than the current width or the current width
2286: # is undefined.
2287: #
2288: my $min_nested_width = 0;
2289: my $max_nested_width = 0;
2290: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2291: $min_nested_width += $min_len[$col];
2292: $max_nested_width += $max_len[$col];
2293:
2294: }
2295: # Fudge in an extra 5 mm for borders etc:
2296:
2297: $min_nested_width += 5;
2298: $max_nested_width += 5;
2299:
2300: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2301: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2302: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2303: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2304: }
2305: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2306: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2307: }
2308:
2309: pop @Apache::londefdef::table;
2310: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2311: } else {
2312: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2313: pop @Apache::londefdef::table;
2314: undef @Apache::londefdef::table;
2315: }
2316: }
2317: return $currentstring;
2318: }
2319:
2320: #-- <tr> tag (end tag optional)
2321: sub start_tr {
2322: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2323: my $currentstring = '';
2324: if ($target eq 'web') {
2325: $currentstring = $token->[4];
2326: } elsif ($target eq 'tex') {
2327: $Apache::londefdef::table[-1]{'row_number'}++;
2328: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2329: if ($alignchar ne '') {
2330: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2331: } else {
2332: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2333: }
2334: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2335: #
2336: # Need to save the number of table columns to preserve the max # columns.
2337: #
2338: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2339: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2340: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2341: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2342: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2343: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2344: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2345: }
2346: return $currentstring;
2347: }
2348:
2349: sub end_tr {
2350: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2351: my $currentstring = &end_p(); # Close any pending <p> in the row.
2352: if ($target eq 'web') {
2353: $currentstring .= $token->[2];
2354: } elsif ($target eq 'tex') {
2355: if ($Apache::londefdef::TD_redirection) {
2356: &end_td_tex($parstack,$parser,$safeeval);
2357: }
2358: # Counter columns must be the maximum number of columns seen
2359: # in the table so far so:
2360: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2361: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2362: }
2363:
2364:
2365:
2366: }
2367: return $currentstring;
2368: }
2369:
2370: #-- <td> tag (end tag optional)
2371: sub start_td {
2372: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2373: my $currentstring = '';
2374: if ($target eq 'web') {
2375: $currentstring = $token->[4];
2376: } elsif ($target eq 'tex') {
2377: $Apache::londefdef::TD_redirection = 1;
2378: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2379: }
2380: return $currentstring;
2381: }
2382:
2383: sub tag_check {
2384: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2385: my @ar=@$parstack;
2386: for (my $i=$#ar-1;$i>=0;$i--) {
2387: if (lc($$tagstack[$i]) eq $good_tag) {
2388: &start_td_tex($parstack,$parser,$safeeval);
2389: last;
2390: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2391: splice @ar, $i+1;
2392: &end_td_tex(\@ar,$parser,$safeeval);
2393: &start_td_tex($parstack,$parser,$safeeval);
2394: last;
2395: }
2396: }
2397: return '';
2398: }
2399:
2400: sub start_td_tex {
2401: my ($parstack,$parser,$safeeval) = @_;
2402: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2403: if ($alignchar eq '') {
2404: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2405: }
2406: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2407: $Apache::londefdef::table[-1]{'counter_columns'}++;
2408: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2409: if (defined $TeXwidth) {
2410: my $current_length=&recalc($TeXwidth);
2411: $current_length=~/(\d+\.?\d*)/;
2412: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2413: }
2414: &Apache::lonxml::startredirection();
2415: return '';
2416: }
2417:
2418: sub end_td_tex {
2419: my ($parstack,$parser,$safeeval) = @_;
2420: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2421: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2422: my $data = &Apache::lonxml::endredirection();
2423:
2424: # The rowspan array of the table indicates which cells are part of a span.
2425: # n indicates the start of a span set of n rows.
2426: # ^ indicates a cell that continues a span set.
2427: # _ indicates the cell is at the bottom of a span set.
2428: # If this and subsequent cells are part of a rowspan, we must
2429: # push along the row until we find one that is not.
2430:
2431: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2432: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2433: # Part of a span.
2434: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2435: $current_column++;
2436: }
2437: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2438:
2439:
2440:
2441: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2442: if (!$rowspan) {
2443: $rowspan = 1;
2444: }
2445:
2446:
2447:
2448: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] = $rowspan;
2449: for (my $i = 1; $i < $rowspan; $i++) {
2450: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column] = '^';
2451: if ($i == ($rowspan-1)) {
2452: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column] = '_';
2453: }
2454: }
2455:
2456: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2457: if (defined $TeXwidth) {
2458: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2459: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2460: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2461: } else {
2462: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2463: my $garbage_data=$data;
2464: my $fwidth=0;
2465: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2466: my $current_length=&recalc($1);
2467: $current_length=~/(\d+\.?\d*)/;
2468: if ($fwidth<$1) {$fwidth=$1;}
2469: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2470: }
2471: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2472: my $current_length=$1;
2473: if ($fwidth<$current_length) {$fwidth=$current_length;}
2474: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2475: }
2476: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2477: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2478: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2479: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2480: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2481: my $garbage_data=$data;
2482: my $fwidth=0;
2483: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2484: my $current_length=&recalc($1);
2485: $current_length=~/(\d+\.?\d*)/;
2486: if ($fwidth<$1) {$fwidth=$1;}
2487: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2488: }
2489: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2490: my $current_length=&recalc($1);
2491: $current_length=~/(\d+\.?\d*)/;
2492: if ($fwidth<$1) {$fwidth=$1;}
2493: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2494: }
2495: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2496: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2497: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2498: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2499: $data=~s/\\\\\s*$//;
2500: } else {
2501: $data=~s/^\s+(\S.*)/$1/;
2502: $data=~s/(.*\S)\s+$/$1/;
2503: $data=~s/(\s)+/$1/;
2504: my ($current_length,$min_length)=(0,0);
2505: if ($data=~/\\vskip/) {
2506: my $newdata=$data;
2507: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2508: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2509: foreach my $elementdata (@newdata) {
2510: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2511: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2512: my @words=split(/ /,$elementdata);
2513: foreach my $word (@words) {
2514: my $lengthword=2.5*&LATEX_length($word);
2515: if ($min_length<$lengthword) {$min_length=$lengthword;}
2516: }
2517: }
2518: } else {
2519: $current_length=2.5*&LATEX_length($data);
2520: my @words=split(/ /,$data);
2521: foreach my $word (@words) {
2522: my $lengthword=2*&LATEX_length($word);
2523: if ($min_length<$lengthword) {$min_length=$lengthword;}
2524: }
2525: }
2526: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2527: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2528: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2529: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2530: }
2531: }
2532: # Substitute all of the tables nested in this cell in their appropriate places.
2533:
2534:
2535: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2536: for (my $in=0; $in<=$nested_count; $in++) {
2537: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2538: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2539: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2540: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2541:
2542: }
2543: # Should be be killing off the 'include' elements as they're used up?
2544:
2545: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2546:
2547: # Get the column and row spans.
2548: # Colspan can be done via \multicolumn if I can figure out the data structs.
2549:
2550: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2551: if (!$colspan) {
2552: $colspan = 1;
2553: }
2554:
2555:
2556: # the colspan array will indicate how many columns will be spanned by this
2557: # cell..this requires that counter_columns also be adjusted accordingly
2558: # so that the next bunch of text goes in the right cell. Note that since
2559: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2560: #
2561:
2562: $Apache::londefdef::table[-1]{'colspan'}[$current_row][$current_column] = $colspan;
2563: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2564:
2565: # Put empty text in spanned cols.
2566:
2567: for (my $i = 0; $i < ($colspan -1); $i++) {
2568: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2569: }
2570:
2571:
2572: return '';
2573: }
2574:
2575: sub end_td {
2576: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2577: my $currentstring = '';
2578: if ($target eq 'web') {
2579: $currentstring = $token->[2];
2580: } elsif ($target eq 'tex') {
2581: $Apache::londefdef::TD_redirection =0;
2582: &end_td_tex($parstack,$parser,$safeeval);
2583: }
2584: return $currentstring;
2585: }
2586:
2587: #-- <th> tag (end tag optional)
2588: sub start_th {
2589: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2590: my $currentstring = '';
2591: if ($target eq 'web') {
2592: $currentstring = $token->[4];
2593: } elsif ($target eq 'tex') {
2594: $Apache::londefdef::TD_redirection = 1;
2595: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2596: }
2597: return $currentstring;
2598: }
2599:
2600: sub tagg_check {
2601: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2602: my @ar=@$parstack;
2603: for (my $i=$#ar-1;$i>=0;$i--) {
2604: if (lc($$tagstack[$i]) eq $good_tag) {
2605: &start_th_tex($parstack,$parser,$safeeval);
2606: last;
2607: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2608: splice @ar, $i+1;
2609: &end_th_tex(\@ar,$parser,$safeeval);
2610: &start_th_tex($parstack,$parser,$safeeval);
2611: last;
2612: }
2613: }
2614: return '';
2615: }
2616:
2617: sub start_th_tex {
2618: my ($parstack,$parser,$safeeval) = @_;
2619: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2620: if ($alignchar eq '') {
2621: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2622: }
2623: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2624: $Apache::londefdef::table[-1]{'counter_columns'}++;
2625: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2626: if (defined $TeXwidth) {
2627: my $current_length=&recalc($TeXwidth);
2628: $current_length=~/(\d+\.?\d*)/;
2629: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2630: }
2631: &Apache::lonxml::startredirection();
2632: return '';
2633: }
2634:
2635: sub end_th_tex {
2636: my ($parstack,$parser,$safeeval) = @_;
2637: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2638: my $data=&Apache::lonxml::endredirection();
2639: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2640: if (defined $TeXwidth) {
2641: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2642: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2643: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2644: } else {
2645: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2646: my $garbage_data=$data;
2647: my $fwidth=0;
2648: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2649: my $current_length=&recalc($1);
2650: $current_length=~/(\d+\.?\d*)/;
2651: if ($fwidth<$1) {$fwidth=$1;}
2652: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2653: }
2654: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2655: my $current_length=$1;
2656: if ($fwidth<$current_length) {$fwidth=$current_length;}
2657: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2658: }
2659: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2660: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2661: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2662: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2663: } else {
2664: $data=~s/^\s+(\S.*)/$1/;
2665: $data=~s/(.*\S)\s+$/$1/;
2666: $data=~s/(\s)+/$1/;
2667: my ($current_length,$min_length)=(0,0);
2668: if ($data=~/\\vskip/) {
2669: my $newdata=$data;
2670: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2671: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2672: foreach my $elementdata (@newdata) {
2673: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2674: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2675: my @words=split(/ /,$elementdata);
2676: foreach my $word (@words) {
2677: my $lengthword=2.5*&LATEX_length($word);
2678: if ($min_length<$lengthword) {$min_length=$lengthword;}
2679: }
2680: }
2681: } else {
2682: $current_length=2.5*&LATEX_length($data);
2683: my @words=split(/ /,$data);
2684: foreach my $word (@words) {
2685: my $lengthword=2*&LATEX_length($word);
2686: if ($min_length<$lengthword) {$min_length=$lengthword;}
2687: }
2688: }
2689: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2690: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2691: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2692: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2693: }
2694: }
2695: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2696: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2697: }
2698: #make data bold
2699: $data='\textbf{'.$data.'}';
2700: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2701: return'';
2702: }
2703:
2704: sub end_th {
2705: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2706: my $currentstring = &end_p(); # Close any open <p> in the row.
2707: if ($target eq 'web') {
2708: $currentstring .= $token->[2];
2709: } elsif ($target eq 'tex') {
2710: $Apache::londefdef::TD_redirection =0;
2711: &end_th_tex($parstack,$parser,$safeeval);
2712: }
2713: return $currentstring;
2714: }
2715:
2716: #-- <img> tag (end tag forbidden)
2717: #
2718: # Render the <IMG> tag.
2719: # <IMG> has the following attributes (in addition to the
2720: # standard HTML ones:
2721: # TeXwrap - Governs how the tex target will try to wrap text around
2722: # horizontally aligned images.
2723: # TeXwidth - The width of the image when rendered for print (mm).
2724: # TeXheight - The height of the image when rendered for print (mm)
2725: # (Note there seems to also be support for this as a % of page size)
2726: #
2727: sub start_img {
2728: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2729: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2730: undef,1);
2731: if (not $src and ($target eq 'web' or $target eq 'tex')) {
2732: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2733: return '';
2734: }
2735: &Apache::lonxml::extlink($src);
2736: my $currentstring = '';
2737: my $scaling = .3;
2738:
2739: # Render unto browsers that which are the browser's...
2740:
2741: if ($target eq 'web') {
2742: if ($env{'browser.imagesuppress'} ne 'on') {
2743: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2744: } else {
2745: my $alttag= &Apache::lonxml::get_param
2746: ('alt',$parstack,$safeeval,undef,1);
2747: unless ($alttag) {
2748: $alttag=&Apache::lonmeta::alttag
2749: ($Apache::lonxml::pwd[-1],$src);
2750: }
2751: $currentstring.='[IMAGE: '.$alttag.']';
2752: }
2753:
2754: # and render unto TeX that which is LaTeX
2755:
2756: } elsif ($target eq 'tex') {
2757: #
2758: # The alignment will require some superstructure to be put around
2759: # the \includegraphics stuff. At present we can only partially
2760: # simulate the alignments offered by html.
2761: #
2762: #
2763: my $align = lc(&Apache::lonxml::get_param('align',
2764: $parstack,
2765: $safeeval,
2766: undef,1));
2767: if(!$align) {
2768: $align = "bottom"; # This is html's default so it's ours too.
2769: }
2770: #
2771: &Apache::lonxml::debug("Alignemnt = $align");
2772: # LaTeX's image/text wrapping is really bad since it wants to
2773: # make figures float.
2774: # The user has the optional parameter (applicable only to l/r
2775: # alignment to use the picins/parpic directive to get wrapped text
2776: # this is also imperfect.. that's why we give them a choice...
2777: # so they can't yell at us for our choice.
2778: #
2779: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2780: $parstack,
2781: $safeeval,
2782: undef,0);
2783: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2784: if(!$latex_rendering) {
2785: $latex_rendering = "texwrap";
2786: }
2787: # using texwrap inside a table does not work. So, if after all of this,
2788: # texwrap is on, we turn it off if we detect we're in a table:
2789: #
2790: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2791: $latex_rendering = 'parpic';
2792: }
2793: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2794:
2795: #if original gif/jpg/png file exist do following:
2796: my $origsrc=$src;
2797: my ($path,$file) = &get_eps_image($src);
2798: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2799: &Apache::lonxml::debug("path = $path file = $file src = $src");
2800: if (-e $src) {
2801: &Apache::lonxml::debug("$src exists");
2802: my ($height_param,$width_param)=
2803: &image_size($origsrc,0.3,$parstack,$safeeval);
2804: my $destpath = $path;
2805: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2806: my $destfile = $file;
2807: $destfile =~ s/ /\_/g;
2808: my $size;
2809: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2810: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2811: $size='['.$size;
2812: $size=~s/,$/]/;
2813: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2814: .'\includegraphics'.$size.'{'.$destfile.'} ';
2815:
2816: # If there's an alignment specification we need to honor it here.
2817: # For the horizontal alignments, we will also honor the
2818: # value of the latex specfication. The default is parbox,
2819: # and that's used for illegal values too.
2820: #
2821: # Even though we set a default alignment value, the user
2822: # could have given us an illegal value. In that case we
2823: # just use the default alignment of bottom..
2824: if ($align eq "top") {
2825: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2826: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2827: my $offset = $height_param/2;
2828: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2829: } elsif ($align eq "left") {
2830: if ($latex_rendering eq "parpic") {
2831: $currentstring = '\parpic[l]{'.$currentstring.'}';
2832: } else { # wrapfig render
2833: $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}'
2834: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2835: }
2836: } elsif ($align eq "right") {
2837: if ($latex_rendering eq "parpic") {
2838: $currentstring = '\parpic[r]{'.$currentstring.'}';
2839: } else { # wrapfig rendering
2840: $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}'
2841: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2842:
2843: }
2844: } else { # Bottom is also default.
2845: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2846: }
2847: } else {
2848: &Apache::lonxml::debug("$src does not exist");
2849: #original image file doesn't exist so check the alt attribute
2850: my $alt =
2851: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2852: unless ($alt) {
2853: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2854: }
2855:
2856: if ($alt) { $currentstring .= ' '.$alt.' '; }
2857: }
2858:
2859: # And here's where the semi-quote breaks down: allow the user
2860: # to edit the beast as well by rendering the problem for edit:
2861: } elsif ($target eq 'edit') {
2862: $currentstring .=&Apache::edit::tag_start($target,$token);
2863: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2864: &Apache::edit::browse('src',undef,'alt').' '.
2865: &Apache::edit::search('src',undef,'alt').'<br />';
2866: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2867: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2868: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2869: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2870: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2871: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2872: ['','bottom','middle','top','left','right'],$token,5);
2873: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2874: ['', 'parbox', 'parpic'], $token, 2);
2875: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2876: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2877: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2878: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2879: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2880:
2881:
2882: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2883: if ($width) { $currentstring.=' width="'.$width.'" '; }
2884: if ($height) { $currentstring.=' height="'.$height.'" '; }
2885: $currentstring .= ' />';
2886: } elsif ($target eq 'modified') {
2887: my ($osrc,$owidth,$oheight)=
2888: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2889: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2890: $safeeval,'src','alt','align',
2891: 'TeXwidth','TeXheight', 'TeXwrap',
2892: 'width','height');
2893: my ($nsrc,$nwidth,$nheight)=
2894: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2895: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2896: &image_replication($loc);
2897: my ($iwidth,$iheight);
2898: if (-e $loc) {
2899: my $image = Image::Magick->new;
2900: $image->Read($loc);
2901: ($iwidth, $iheight) = ($image->Get('width'),
2902: $image->Get('height'));
2903: }
2904: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2905: # changed image or no size specified,
2906: # if they didn't explicitly change the
2907: # width or height use the ones from the image
2908: if ($iwidth && $iheight) {
2909: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2910: $token->[2]{'width'} = $iwidth;$ctag=1;
2911: }
2912: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2913: $token->[2]{'height'}=$iheight;$ctag=1;
2914: }
2915: }
2916: }
2917: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2918: # if we don't have a width or height
2919: if ($iwidth && $cwidth && !$cheight) {
2920: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2921: }
2922: if ($iheight && $cheight && !$cwidth) {
2923: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2924: }
2925: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2926: }
2927:
2928: return $currentstring;
2929: }
2930:
2931: sub end_img {
2932: my ($target,$token) = @_;
2933: my $currentstring = '';
2934: if ($target eq 'web') {
2935: $currentstring = $token->[2];
2936: } elsif ($target eq 'tex') {
2937: $currentstring = '';
2938: }
2939: return $currentstring;
2940: }
2941:
2942: #-- <applet> tag (end tag required)
2943: sub start_applet {
2944: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2945:
2946: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2947: &Apache::lonxml::extlink($code);
2948: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2949: undef,1);
2950: &Apache::lonxml::extlink($archive);
2951: my $currentstring = '';
2952: if ($target eq 'web') {
2953: if ($env{'browser.appletsuppress'} ne 'on') {
2954: $currentstring = &Apache::lonenc::encrypt_ref($token,
2955: {'code'=>$code,
2956: 'archive'=>$archive}
2957: );
2958: } else {
2959: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2960: $safeeval,undef,1);
2961: unless ($alttag) {
2962: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2963: $code);
2964: }
2965: $currentstring='[APPLET: '.$alttag.']';
2966: }
2967: } elsif ($target eq 'tex') {
2968: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2969: $safeeval,undef,1);
2970: unless ($alttag) {
2971: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2972: undef,1);
2973: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2974: $code);
2975: }
2976: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2977: '.}\end{center}';
2978: }
2979: return $currentstring;
2980: }
2981:
2982: sub end_applet {
2983: my ($target,$token) = @_;
2984: my $currentstring = '';
2985: if ($target eq 'web') {
2986: $currentstring = $token->[2];
2987: } elsif ($target eq 'tex') {
2988: }
2989: return $currentstring;
2990: }
2991:
2992: #-- <embed> tag (end tag optional/required)
2993: sub start_embed {
2994: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2995: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2996: &Apache::lonxml::extlink($src);
2997: my $currentstring = '';
2998: if ($target eq 'web') {
2999: if ($env{'browser.embedsuppress'} ne 'on') {
3000: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3001: } else {
3002: my $alttag=&Apache::lonxml::get_param
3003: ('alt',$parstack,$safeeval,undef,1);
3004: unless ($alttag) {
3005: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3006: }
3007: $currentstring='[EMBED: '.$alttag.']';
3008: }
3009: } elsif ($target eq 'tex') {
3010: }
3011: return $currentstring;
3012: }
3013:
3014: sub end_embed {
3015: my ($target,$token) = @_;
3016: my $currentstring = '';
3017: if ($target eq 'web') {
3018: $currentstring = $token->[2];
3019: } elsif ($target eq 'tex') {
3020: }
3021: return $currentstring;
3022: }
3023:
3024: #-- <param> tag (end tag forbidden)
3025: sub start_param {
3026: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3027: if (&Apache::lonxml::get_param('name',$parstack,
3028: $safeeval,undef,1)=~/^cabbase$/i) {
3029: my $value=&Apache::lonxml::get_param('value',$parstack,
3030: $safeeval,undef,1);
3031: &Apache::lonxml::extlink($value);
3032: }
3033:
3034: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3035: &Apache::lonxml::extlink($src);
3036: my $currentstring = '';
3037: if ($target eq 'web') {
3038: my %toconvert;
3039: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3040: if ($src) { $toconvert{'src'}= $src; }
3041: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3042: undef,1);
3043: if ($name=~/^cabbase$/i) {
3044: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3045: $safeeval,undef,1);
3046: }
3047: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3048: } elsif ($target eq 'tex') {
3049: }
3050: return $currentstring;
3051: }
3052:
3053: sub end_param {
3054: my ($target,$token) = @_;
3055: my $currentstring = '';
3056: if ($target eq 'web') {
3057: $currentstring = $token->[2];
3058: } elsif ($target eq 'tex') {
3059: }
3060: return $currentstring;
3061: }
3062:
3063: #-- <allow> tag
3064: sub start_allow {
3065: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3066: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3067: &Apache::lonxml::extlink($src);
3068:
3069: if ($target eq 'tex') { &image_replication($src); }
3070: my $result;
3071: if ($target eq 'edit') {
3072: $result .=&Apache::edit::tag_start($target,$token);
3073: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3074: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3075: } elsif ($target eq 'modified') {
3076: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3077: $safeeval,'src');
3078: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3079: }
3080: return $result;
3081: }
3082:
3083: sub end_allow {
3084: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3085: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3086: return '';
3087: }
3088:
3089: #-- Frames (end tag required)
3090: #-- <frameset>
3091: sub start_frameset {
3092: my ($target,$token) = @_;
3093: my $currentstring = ''; # Close any pending para.
3094: if ($target eq 'web') {
3095: if (!$Apache::lonxml::registered &&
3096: $env{'request.state'} eq 'published') {
3097: $currentstring.='<head>'.
3098: &Apache::lonmenu::registerurl(undef,$target).'</head>';
3099: }
3100: my $onLoad='';
3101: foreach my $key (keys(%{$token->[2]})) {
3102: if ($key =~ /^onload$/i) {
3103: $onLoad.=$token->[2]->{$key}.';';
3104: delete($token->[2]->{$key});
3105: }
3106: }
3107: $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
3108: my $onUnload='';
3109: foreach my $key (keys(%{$token->[2]})) {
3110: if ($key =~ /^onunload$/i) {
3111: $onUnload.=$token->[2]->{$key}.';';
3112: delete($token->[2]->{$key});
3113: }
3114: }
3115: $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
3116: ';'.$onUnload;
3117:
3118: $currentstring .= '<'.$token->[1];
3119: foreach (keys %{$token->[2]}) {
3120: $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
3121: }
3122: $currentstring.='>';
3123: }
3124: return $currentstring;
3125: }
3126:
3127: sub end_frameset {
3128: my ($target,$token) = @_;
3129: my $currentstring = '';
3130: if ($target eq 'web') {
3131: $currentstring = $token->[2];
3132: }
3133: return $currentstring;
3134: }
3135:
3136: #-- <xmp> (end tag required)
3137: sub start_xmp {
3138: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3139: my $currentstring = '';
3140: if ($target eq 'web') {
3141: $currentstring .= $token->[4];
3142: } elsif ($target eq 'tex') {
3143: $currentstring .= '\begin{verbatim}';
3144: }
3145: return $currentstring;
3146: }
3147:
3148: sub end_xmp {
3149: my ($target,$token) = @_;
3150: my $currentstring = '';
3151: if ($target eq 'web') {
3152: $currentstring .= $token->[2];
3153: } elsif ($target eq 'tex') {
3154: $currentstring .= '\end{verbatim}';
3155: }
3156: return $currentstring;
3157: }
3158:
3159: #-- <pre> (end tag required)
3160: sub start_pre {
3161: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3162: my $currentstring = &end_p(); # close off pending <p>
3163: if ($target eq 'web') {
3164: $currentstring .= $token->[4];
3165: } elsif ($target eq 'tex') {
3166: $currentstring .= '\begin{verbatim}';
3167: }
3168: return $currentstring;
3169: }
3170:
3171: sub end_pre {
3172: my ($target,$token) = @_;
3173: my $currentstring = '';
3174: if ($target eq 'web') {
3175: $currentstring .= $token->[2];
3176: } elsif ($target eq 'tex') {
3177: $currentstring .= '\end{verbatim}';
3178: }
3179: return $currentstring;
3180: }
3181:
3182: #-- <insert>
3183: sub start_insert {
3184: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3185: my $currentstring = '';
3186: if ($target eq 'web') {
3187: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3188: $currentstring .= '<b>'.$display.'</b>';;
3189: }
3190: return $currentstring;
3191: }
3192:
3193: sub end_insert {
3194: my ($target,$token) = @_;
3195: my $currentstring = '';
3196: if ($target eq 'web') {
3197: $currentstring .= '';
3198: }
3199: return $currentstring;
3200: }
3201:
3202: #-- <externallink>
3203: sub start_externallink {
3204: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3205: my $currentstring = '';
3206: if ($target eq 'web') {
3207: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3208: $currentstring .= '<b>'.$display.'</b>';;
3209: }
3210: return $currentstring;
3211: }
3212:
3213: sub end_externallink {
3214: my ($target,$token) = @_;
3215: my $currentstring = '';
3216: if ($target eq 'web') {
3217: $currentstring .= '';
3218: }
3219: return $currentstring;
3220: }
3221:
3222: #-- <blankspace heigth="">
3223: sub start_blankspace {
3224: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3225: my $currentstring = &end_p(); # closes off any unclosed <p>
3226: if ($target eq 'tex') {
3227: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3228: $currentstring .= '\vskip '.$howmuch.' ';
3229: }
3230: return $currentstring;
3231: }
3232:
3233: sub end_blankspace {
3234: my ($target,$token) = @_;
3235: my $currentstring = '';
3236: if ($target eq 'tex') {
3237: $currentstring .= '';
3238: }
3239: return $currentstring;
3240: }
3241:
3242: #-- <abbr> tag (end tag required)
3243: sub start_abbr {
3244: my ($target,$token) = @_;
3245: my $currentstring = '';
3246: if ($target eq 'web') {
3247: $currentstring = $token->[4];
3248: }
3249: return $currentstring;
3250: }
3251:
3252: sub end_abbr {
3253: my ($target,$token) = @_;
3254: my $currentstring = '';
3255: if ($target eq 'web') {
3256: $currentstring = $token->[2];
3257: }
3258: return $currentstring;
3259: }
3260:
3261: #-- <acronym> tag (end tag required)
3262: sub start_acronym {
3263: my ($target,$token) = @_;
3264: my $currentstring = '';
3265: if ($target eq 'web') {
3266: $currentstring = $token->[4];
3267: }
3268: return $currentstring;
3269: }
3270:
3271: sub end_acronym {
3272: my ($target,$token) = @_;
3273: my $currentstring = '';
3274: if ($target eq 'web') {
3275: $currentstring = $token->[2];
3276: }
3277: return $currentstring;
3278: }
3279:
3280: #-- <area> tag (end tag forbidden)
3281: sub start_area {
3282: my ($target,$token) = @_;
3283: my $currentstring = '';
3284: if ($target eq 'web') {
3285: $currentstring = $token->[4];
3286: }
3287: return $currentstring;
3288: }
3289:
3290: sub end_area {
3291: my ($target,$token) = @_;
3292: my $currentstring = '';
3293: if ($target eq 'web') {
3294: $currentstring = $token->[2];
3295: }
3296: return $currentstring;
3297: }
3298:
3299: #-- <base> tag (end tag forbidden)
3300: sub start_base {
3301: my ($target,$token) = @_;
3302: my $currentstring = '';
3303: if ($target eq 'web') {
3304: $currentstring = $token->[4];
3305: }
3306: return $currentstring;
3307: }
3308:
3309: sub end_base {
3310: my ($target,$token) = @_;
3311: my $currentstring = '';
3312: if ($target eq 'web') {
3313: $currentstring = $token->[2];
3314: }
3315: return $currentstring;
3316: }
3317:
3318: #-- <bdo> tag (end tag required)
3319: sub start_bdo {
3320: my ($target,$token) = @_;
3321: my $currentstring = '';
3322: if ($target eq 'web') {
3323: $currentstring = $token->[4];
3324: }
3325: return $currentstring;
3326: }
3327:
3328: sub end_bdo {
3329: my ($target,$token) = @_;
3330: my $currentstring = '';
3331: if ($target eq 'web') {
3332: $currentstring = $token->[2];
3333: }
3334: return $currentstring;
3335: }
3336:
3337: #-- <bgsound> tag (end tag optional)
3338: sub start_bgsound {
3339: my ($target,$token) = @_;
3340: my $currentstring = '';
3341: if ($target eq 'web') {
3342: $currentstring = $token->[4];
3343: }
3344: return $currentstring;
3345: }
3346:
3347: sub end_bgsound {
3348: my ($target,$token) = @_;
3349: my $currentstring = '';
3350: if ($target eq 'web') {
3351: $currentstring = $token->[2];
3352: }
3353: return $currentstring;
3354: }
3355:
3356: #-- <blink> tag (end tag required)
3357: sub start_blink {
3358: my ($target,$token) = @_;
3359: my $currentstring = '';
3360: if ($target eq 'web') {
3361: $currentstring = $token->[4];
3362: }
3363: return $currentstring;
3364: }
3365:
3366: sub end_blink {
3367: my ($target,$token) = @_;
3368: my $currentstring = '';
3369: if ($target eq 'web') {
3370: $currentstring = $token->[2];
3371: }
3372: return $currentstring;
3373: }
3374:
3375: #-- <blockquote> tag (end tag required)
3376: sub start_blockquote {
3377: my ($target,$token) = @_;
3378: my $currentstring = &end_p(); # Close any unclosed <p>
3379: if ($target eq 'web') {
3380: $currentstring .= $token->[4];
3381: }
3382: return $currentstring;
3383: }
3384:
3385: sub end_blockquote {
3386: my ($target,$token) = @_;
3387: my $currentstring = '';
3388: if ($target eq 'web') {
3389: $currentstring = $token->[2];
3390: }
3391: return $currentstring;
3392: }
3393:
3394: #-- <button> tag (end tag required)
3395: sub start_button {
3396: my ($target,$token) = @_;
3397: my $currentstring = '';
3398: if ($target eq 'web') {
3399: $currentstring = $token->[4];
3400: }
3401: return $currentstring;
3402: }
3403:
3404: sub end_button {
3405: my ($target,$token) = @_;
3406: my $currentstring = '';
3407: if ($target eq 'web') {
3408: $currentstring = $token->[2];
3409: }
3410: return $currentstring;
3411: }
3412:
3413: #-- <caption> tag (end tag required)
3414: sub start_caption {
3415: my ($target,$token) = @_;
3416: my $currentstring = '';
3417: if ($target eq 'web') {
3418: $currentstring = $token->[4];
3419: }
3420: return $currentstring;
3421: }
3422:
3423: sub end_caption {
3424: my ($target,$token) = @_;
3425: my $currentstring = '';
3426: if ($target eq 'web') {
3427: $currentstring = $token->[2];
3428: }
3429: return $currentstring;
3430: }
3431:
3432: #-- <col> tag (end tag forbdden)
3433: sub start_col {
3434: my ($target,$token) = @_;
3435: my $currentstring = '';
3436: if ($target eq 'web') {
3437: $currentstring = $token->[4];
3438: }
3439: return $currentstring;
3440: }
3441:
3442: sub end_col {
3443: my ($target,$token) = @_;
3444: my $currentstring = '';
3445: if ($target eq 'web') {
3446: $currentstring = $token->[2];
3447: }
3448: return $currentstring;
3449: }
3450:
3451: #-- <colgroup> tag (end tag optional)
3452: sub start_colgroup {
3453: my ($target,$token) = @_;
3454: my $currentstring = '';
3455: if ($target eq 'web') {
3456: $currentstring = $token->[4];
3457: }
3458: return $currentstring;
3459: }
3460:
3461: sub end_colgroup {
3462: my ($target,$token) = @_;
3463: my $currentstring = '';
3464: if ($target eq 'web') {
3465: $currentstring = $token->[2];
3466: }
3467: return $currentstring;
3468: }
3469:
3470: #-- <del> tag (end tag required)
3471: sub start_del {
3472: my ($target,$token) = @_;
3473: my $currentstring = '';
3474: if ($target eq 'web') {
3475: $currentstring = $token->[4];
3476: }
3477: return $currentstring;
3478: }
3479:
3480: sub end_del {
3481: my ($target,$token) = @_;
3482: my $currentstring = '';
3483: if ($target eq 'web') {
3484: $currentstring = $token->[2];
3485: }
3486: return $currentstring;
3487: }
3488:
3489: #-- <fieldset> tag (end tag required)
3490: sub start_fieldset {
3491: my ($target,$token) = @_;
3492: my $currentstring = '';
3493: if ($target eq 'web') {
3494: $currentstring = $token->[4];
3495: }
3496: return $currentstring;
3497: }
3498:
3499: sub end_fieldset {
3500: my ($target,$token) = @_;
3501: my $currentstring = '';
3502: if ($target eq 'web') {
3503: $currentstring = $token->[2];
3504: }
3505: return $currentstring;
3506: }
3507:
3508: #-- <frame> tag (end tag forbidden)
3509: sub start_frame {
3510: my ($target,$token) = @_;
3511: my $currentstring = '';
3512: if ($target eq 'web') {
3513: $currentstring = $token->[4];
3514: }
3515: return $currentstring;
3516: }
3517:
3518: sub end_frame {
3519: my ($target,$token) = @_;
3520: my $currentstring = '';
3521: if ($target eq 'web') {
3522: $currentstring = $token->[2];
3523: }
3524: return $currentstring;
3525: }
3526:
3527: #-- <iframe> tag (end tag required)
3528: sub start_iframe {
3529: my ($target,$token) = @_;
3530: my $currentstring = '';
3531: if ($target eq 'web') {
3532: $currentstring = $token->[4];
3533: }
3534: return $currentstring;
3535: }
3536:
3537: sub end_iframe {
3538: my ($target,$token) = @_;
3539: my $currentstring = '';
3540: if ($target eq 'web') {
3541: $currentstring = $token->[2];
3542: }
3543: return $currentstring;
3544: }
3545:
3546: #-- <ins> tag (end tag required)
3547: sub start_ins {
3548: my ($target,$token) = @_;
3549: my $currentstring = '';
3550: if ($target eq 'web') {
3551: $currentstring = $token->[4];
3552: }
3553: return $currentstring;
3554: }
3555:
3556: sub end_ins {
3557: my ($target,$token) = @_;
3558: my $currentstring = '';
3559: if ($target eq 'web') {
3560: $currentstring = $token->[2];
3561: }
3562: return $currentstring;
3563: }
3564:
3565: #-- <isindex> tag (end tag forbidden)
3566: sub start_isindex {
3567: my ($target,$token) = @_;
3568: my $currentstring = '';
3569: if ($target eq 'web') {
3570: $currentstring = $token->[4];
3571: }
3572: return $currentstring;
3573: }
3574:
3575: sub end_isindex {
3576: my ($target,$token) = @_;
3577: my $currentstring = '';
3578: if ($target eq 'web') {
3579: $currentstring = $token->[2];
3580: }
3581: return $currentstring;
3582: }
3583:
3584: #-- <keygen> tag (end tag forbidden)
3585: sub start_keygen {
3586: my ($target,$token) = @_;
3587: my $currentstring = '';
3588: if ($target eq 'web') {
3589: $currentstring = $token->[4];
3590: }
3591: return $currentstring;
3592: }
3593:
3594: sub end_keygen {
3595: my ($target,$token) = @_;
3596: my $currentstring = '';
3597: if ($target eq 'web') {
3598: $currentstring = $token->[2];
3599: }
3600: return $currentstring;
3601: }
3602:
3603: #-- <label> tag
3604: sub start_label {
3605: my ($target,$token) = @_;
3606: my $currentstring = '';
3607: if ($target eq 'web') {
3608: $currentstring = $token->[4];
3609: }
3610: return $currentstring;
3611: }
3612:
3613: sub end_label {
3614: my ($target,$token) = @_;
3615: my $currentstring = '';
3616: if ($target eq 'web') {
3617: $currentstring = $token->[2];
3618: }
3619: return $currentstring;
3620: }
3621:
3622: #-- <layer> tag (end tag required)
3623: sub start_layer {
3624: my ($target,$token) = @_;
3625: my $currentstring = '';
3626: if ($target eq 'web') {
3627: $currentstring = $token->[4];
3628: }
3629: return $currentstring;
3630: }
3631:
3632: sub end_layer {
3633: my ($target,$token) = @_;
3634: my $currentstring = '';
3635: if ($target eq 'web') {
3636: $currentstring = $token->[2];
3637: }
3638: return $currentstring;
3639: }
3640:
3641: #-- <legend> tag (end tag required)
3642: sub start_legend {
3643: my ($target,$token) = @_;
3644: my $currentstring = '';
3645: if ($target eq 'web') {
3646: $currentstring = $token->[4];
3647: }
3648: return $currentstring;
3649: }
3650:
3651: sub end_legend {
3652: my ($target,$token) = @_;
3653: my $currentstring = '';
3654: if ($target eq 'web') {
3655: $currentstring = $token->[2];
3656: }
3657: return $currentstring;
3658: }
3659:
3660: #-- <link> tag (end tag forbidden)
3661: sub start_link {
3662: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3663: my $currentstring = '';
3664: if ($target eq 'web') {
3665: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3666: undef,1);
3667: &Apache::lonxml::extlink($href);
3668: $currentstring = $token->[4];
3669: }
3670: return $currentstring;
3671: }
3672:
3673: sub end_link {
3674: my ($target,$token) = @_;
3675: my $currentstring = '';
3676: if ($target eq 'web') {
3677: $currentstring = $token->[2];
3678: }
3679: return $currentstring;
3680: }
3681:
3682: #-- <marquee> tag (end tag optional)
3683: sub start_marquee {
3684: my ($target,$token) = @_;
3685: my $currentstring = '';
3686: if ($target eq 'web') {
3687: $currentstring = $token->[4];
3688: }
3689: return $currentstring;
3690: }
3691:
3692: sub end_marquee {
3693: my ($target,$token) = @_;
3694: my $currentstring = '';
3695: if ($target eq 'web') {
3696: $currentstring = $token->[2];
3697: }
3698: return $currentstring;
3699: }
3700:
3701: #-- <multicol> tag (end tag required)
3702: sub start_multicol {
3703: my ($target,$token) = @_;
3704: my $currentstring = &end_p(); # Close any pending <p>
3705: if ($target eq 'web') {
3706: $currentstring .= $token->[4];
3707: }
3708: return $currentstring;
3709: }
3710:
3711: sub end_multicol {
3712: my ($target,$token) = @_;
3713: my $currentstring = '';
3714: if ($target eq 'web') {
3715: $currentstring = $token->[2];
3716: }
3717: return $currentstring;
3718: }
3719:
3720: #-- <nobr> tag (end tag required)
3721: sub start_nobr {
3722: my ($target,$token) = @_;
3723: my $currentstring = '';
3724: if ($target eq 'web') {
3725: $currentstring = $token->[4];
3726: } elsif ($target eq 'tex') {
3727: $currentstring='\mbox{';
3728: }
3729: return $currentstring;
3730: }
3731:
3732: sub end_nobr {
3733: my ($target,$token) = @_;
3734: my $currentstring = '';
3735: if ($target eq 'web') {
3736: $currentstring = $token->[2];
3737: } elsif ($target eq 'tex') {
3738: $currentstring='}';
3739: }
3740: return $currentstring;
3741: }
3742:
3743: #-- <noembed> tag (end tag required)
3744: sub start_noembed {
3745: my ($target,$token) = @_;
3746: my $currentstring = '';
3747: if ($target eq 'web') {
3748: $currentstring = $token->[4];
3749: }
3750: return $currentstring;
3751: }
3752:
3753: sub end_noembed {
3754: my ($target,$token) = @_;
3755: my $currentstring = '';
3756: if ($target eq 'web') {
3757: $currentstring = $token->[2];
3758: }
3759: return $currentstring;
3760: }
3761:
3762: #-- <noframes> tag (end tag required)
3763: sub start_noframes {
3764: my ($target,$token) = @_;
3765: my $currentstring = '';
3766: if ($target eq 'web') {
3767: $currentstring = $token->[4];
3768: }
3769: return $currentstring;
3770: }
3771:
3772: sub end_noframes {
3773: my ($target,$token) = @_;
3774: my $currentstring = '';
3775: if ($target eq 'web') {
3776: $currentstring = $token->[2];
3777: }
3778: return $currentstring;
3779: }
3780:
3781: #-- <nolayer> tag (end tag required)
3782: sub start_nolayer {
3783: my ($target,$token) = @_;
3784: my $currentstring = '';
3785: if ($target eq 'web') {
3786: $currentstring = $token->[4];
3787: }
3788: return $currentstring;
3789: }
3790:
3791: sub end_nolayer {
3792: my ($target,$token) = @_;
3793: my $currentstring = '';
3794: if ($target eq 'web') {
3795: $currentstring = $token->[2];
3796: }
3797: return $currentstring;
3798: }
3799:
3800: #-- <noscript> tag (end tag required)
3801: sub start_noscript {
3802: my ($target,$token) = @_;
3803: my $currentstring = '';
3804: if ($target eq 'web') {
3805: $currentstring = $token->[4];
3806: }
3807: return $currentstring;
3808: }
3809:
3810: sub end_noscript {
3811: my ($target,$token) = @_;
3812: my $currentstring = '';
3813: if ($target eq 'web') {
3814: $currentstring = $token->[2];
3815: }
3816: return $currentstring;
3817: }
3818:
3819: #-- <object> tag (end tag required)
3820: sub start_object {
3821: my ($target,$token) = @_;
3822: my $currentstring = '';
3823: if ($target eq 'web') {
3824: $currentstring = $token->[4];
3825: }
3826: return $currentstring;
3827: }
3828:
3829: sub end_object {
3830: my ($target,$token) = @_;
3831: my $currentstring = '';
3832: if ($target eq 'web') {
3833: $currentstring = $token->[2];
3834: }
3835: return $currentstring;
3836: }
3837:
3838: #-- <optgroup> tag (end tag required)
3839: sub start_optgroup {
3840: my ($target,$token) = @_;
3841: my $currentstring = '';
3842: if ($target eq 'web') {
3843: $currentstring = $token->[4];
3844: }
3845: return $currentstring;
3846: }
3847:
3848: sub end_optgroup {
3849: my ($target,$token) = @_;
3850: my $currentstring = '';
3851: if ($target eq 'web') {
3852: $currentstring = $token->[2];
3853: }
3854: return $currentstring;
3855: }
3856:
3857: #-- <samp> tag (end tag required)
3858: sub start_samp {
3859: my ($target,$token) = @_;
3860: my $currentstring = '';
3861: if ($target eq 'web') {
3862: $currentstring = $token->[4];
3863: } elsif ($target eq 'tex') {
3864: $currentstring='\texttt{';
3865: }
3866: return $currentstring;
3867: }
3868:
3869: sub end_samp {
3870: my ($target,$token) = @_;
3871: my $currentstring = '';
3872: if ($target eq 'web') {
3873: $currentstring = $token->[2];
3874: } elsif ($target eq 'tex') {
3875: $currentstring='}';
3876: }
3877: return $currentstring;
3878: }
3879:
3880: #-- <server> tag
3881: sub start_server {
3882: my ($target,$token) = @_;
3883: my $currentstring = '';
3884: if ($target eq 'web') {
3885: $currentstring = $token->[4];
3886: }
3887: return $currentstring;
3888: }
3889:
3890: sub end_server {
3891: my ($target,$token) = @_;
3892: my $currentstring = '';
3893: if ($target eq 'web') {
3894: $currentstring = $token->[2];
3895: }
3896: return $currentstring;
3897: }
3898:
3899: #-- <spacer> tag (end tag forbidden)
3900: sub start_spacer {
3901: my ($target,$token) = @_;
3902: my $currentstring = &end_p(); # Close off any open <p> tag.
3903: if ($target eq 'web') {
3904: $currentstring .= $token->[4];
3905: }
3906: return $currentstring;
3907: }
3908:
3909: sub end_spacer {
3910: my ($target,$token) = @_;
3911: my $currentstring = '';
3912: if ($target eq 'web') {
3913: $currentstring = $token->[2];
3914: }
3915: return $currentstring;
3916: }
3917:
3918: #-- <span> tag (end tag required)
3919: sub start_span {
3920: my ($target,$token) = @_;
3921: my $currentstring = '';
3922: if ($target eq 'web') {
3923: $currentstring = $token->[4];
3924: }
3925: return $currentstring;
3926: }
3927:
3928: sub end_span {
3929: my ($target,$token) = @_;
3930: my $currentstring = '';
3931: if ($target eq 'web') {
3932: $currentstring = $token->[2];
3933: }
3934: return $currentstring;
3935: }
3936:
3937: #-- <tbody> tag (end tag optional)
3938: sub start_tbody {
3939: my ($target,$token) = @_;
3940: my $currentstring = '';
3941: if ($target eq 'web') {
3942: $currentstring = $token->[4];
3943: }
3944: return $currentstring;
3945: }
3946:
3947: sub end_tbody {
3948: my ($target,$token) = @_;
3949: my $currentstring = '';
3950: if ($target eq 'web') {
3951: $currentstring = $token->[2];
3952: }
3953: return $currentstring;
3954: }
3955:
3956: #-- <tfoot> tag (end tag optional)
3957: sub start_tfoot {
3958: my ($target,$token) = @_;
3959: my $currentstring = '';
3960: if ($target eq 'web') {
3961: $currentstring = $token->[4];
3962: }
3963: return $currentstring;
3964: }
3965:
3966: sub end_tfoot {
3967: my ($target,$token) = @_;
3968: my $currentstring = '';
3969: if ($target eq 'web') {
3970: $currentstring = $token->[2];
3971: }
3972: return $currentstring;
3973: }
3974:
3975: #-- <thead> tag (end tag optional)
3976: sub start_thead {
3977: my ($target,$token) = @_;
3978: my $currentstring = '';
3979: if ($target eq 'web') {
3980: $currentstring = $token->[4];
3981: }
3982: return $currentstring;
3983: }
3984:
3985: sub end_thead {
3986: my ($target,$token) = @_;
3987: my $currentstring = '';
3988: if ($target eq 'web') {
3989: $currentstring = $token->[2];
3990: }
3991: return $currentstring;
3992: }
3993:
3994: #-- <var> tag
3995: sub start_var {
3996: my ($target,$token) = @_;
3997: my $currentstring = '';
3998: if ($target eq 'web') {
3999: $currentstring = $token->[4];
4000: } elsif ($target eq 'tex') {
4001: $currentstring = '\textit{';
4002: }
4003: return $currentstring;
4004: }
4005:
4006: sub end_var {
4007: my ($target,$token) = @_;
4008: my $currentstring = '';
4009: if ($target eq 'web') {
4010: $currentstring = $token->[2];
4011: } elsif ($target eq 'tex') {
4012: $currentstring = '}';
4013: }
4014: return $currentstring;
4015: }
4016:
4017: #-- <wbr> tag (end tag forbidden)
4018: sub start_wbr {
4019: my ($target,$token) = @_;
4020: my $currentstring = '';
4021: if ($target eq 'web') {
4022: $currentstring = $token->[4];
4023: }
4024: return $currentstring;
4025: }
4026:
4027: sub end_wbr {
4028: my ($target,$token) = @_;
4029: my $currentstring = '';
4030: if ($target eq 'web') {
4031: $currentstring = $token->[2];
4032: }
4033: return $currentstring;
4034: }
4035:
4036: #-- <hideweboutput> tag
4037: sub start_hideweboutput {
4038: my ($target,$token) = @_;
4039: if ($target eq 'web') {
4040: &Apache::lonxml::startredirection();
4041: }
4042: return '';
4043: }
4044:
4045: sub end_hideweboutput {
4046: my ($target,$token) = @_;
4047: my $currentstring = '';
4048: if ($target eq 'web') {
4049: $currentstring = &Apache::lonxml::endredirection();
4050: }
4051: return '';
4052: }
4053:
4054:
4055: sub image_replication {
4056: my $src = shift;
4057: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4058: #replicates eps or ps
4059: my $epssrc = my $pssrc = $src;
4060: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4061: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4062: if (not -e $epssrc && not -e $pssrc) {
4063: my $result=&Apache::lonnet::repcopy($epssrc);
4064: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4065: }
4066: return '';
4067: }
4068: #
4069: # Get correct sizing parameter for an image given
4070: # it's initial ht. and wid. This allows sizing of
4071: # images that are generated on-the-fly (e.g. gnuplot)
4072: # as well as serving as a utility for image_size.
4073: #
4074: # Parameter:
4075: # height_param
4076: # width_param - Initial picture dimensions.
4077: # scaling - A scale factor.
4078: # parstack, - the current stack of tag attributes
4079: # from the xml parser
4080: # safeeval, - pointer to the safespace
4081: # depth, - from what level in the stack to look for attributes
4082: # (assumes -1 if unspecified)
4083: # cis - look for attrubutes case insensitively
4084: # (assumes false)
4085: #
4086: # Returns:
4087: # height, width - new dimensions.
4088: #
4089: sub resize_image {
4090: my ($height_param, $width_param, $scaling,
4091: $parstack, $safeeval, $depth, $cis) = @_;
4092:
4093: # First apply the scaling...
4094:
4095: $height_param = $height_param * $scaling;
4096: $width_param = $width_param * $scaling;
4097:
4098: #do we have any specified LaTeX size of the picture?
4099: my $toget='TeXwidth';
4100: if ($cis) {
4101: $toget=lc($toget);
4102: }
4103: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4104: $safeeval,$depth,$cis);
4105: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4106: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4107: $safeeval,$depth,$cis);
4108: #do we have any specified web size of the picture?
4109: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4110: $depth,1);
4111: if ($TeXwidth) {
4112: my $old_width_param=$width_param;
4113: if ($TeXwidth=~/(\d+)\s*\%/) {
4114: $width_param = $1*$env{'form.textwidth'}/100;
4115: } else {
4116: $width_param = $TeXwidth;
4117: }
4118: if ($TeXheight) {
4119: $height_param = $TeXheight;
4120: } elsif ($old_width_param) {
4121: $height_param=$TeXwidth/$old_width_param*$height_param;
4122: }
4123: } elsif ($TeXheight) {
4124: $height_param = $TeXheight;
4125: if ($height_param) {
4126: $width_param = $TeXheight/$height_param*$width_param;
4127: }
4128: } elsif ($width) {
4129: my $old_width_param=$width_param;
4130: $width_param = $width*$scaling;
4131: if ($old_width_param) {
4132: $height_param=$width_param/$old_width_param*$height_param;
4133: }
4134: }
4135: if ($width_param > $env{'form.textwidth'}) {
4136: my $old_width_param=$width_param;
4137: $width_param =0.95*$env{'form.textwidth'};
4138: if ($old_width_param) {
4139: $height_param=$width_param/$old_width_param*$height_param;
4140: }
4141: }
4142:
4143: return ($height_param, $width_param);
4144: }
4145:
4146: sub image_size {
4147: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4148:
4149: #size of image from gif/jpg/jpeg/png
4150: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4151: if (-e $ressrc) {
4152: $src = $ressrc;
4153: }
4154: my $image = Image::Magick->new;
4155: my $current_figure = $image->Read($src);
4156: my $width_param = $image->Get('width');
4157: my $height_param = $image->Get('height');
4158: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4159: undef($image);
4160:
4161: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4162: $scaling, $parstack, $safeeval,
4163: $depth, $cis);
4164:
4165: return ($height_param, $width_param);
4166: }
4167:
4168: sub image_width {
4169: my ($height, $width) = &image_size(@_);
4170: return $width;
4171: }
4172: # Not yet 100% sure this is correct in all circumstances..
4173: # due to my uncertainty about mods to image_size.
4174: #
4175: sub image_height {
4176: my ($height, $width) = &image_size(@_);
4177: return $height;
4178: }
4179:
4180: sub get_eps_image {
4181: my ($src)=@_;
4182: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4183:
4184: # In order to prevent the substitution of the alt text, we need to
4185: # be sure the orig_src file is on system now so:
4186:
4187: if (! -e $orig_src) {
4188: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4189: }
4190: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4191: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4192: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4193: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4194: &Apache::lonxml::debug("Filelocation gives: $src");
4195: if (! -e $src) {
4196: &Apache::lonxml::debug("$src does not exist");
4197: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4198: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4199: #if replication failed try to find ps file
4200: $src=~s/\.eps$/\.ps/;
4201: &Apache::lonxml::debug("Now looking for $src");
4202: #if no ps file try to replicate it.
4203: my $didrepcopy = &Apache::lonnet::repcopy($src);
4204: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4205: if ( (not -e $src) ||
4206: ($didrepcopy ne 'ok')) {
4207: &Apache::lonxml::debug("Failed to find or replicate $src");
4208:
4209: #if replication failed try to produce eps file dynamically
4210: $src=~s/\.ps$/\.eps/;
4211: my $temp_file;
4212: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4213: my $newsrc=$orig_src;
4214: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4215: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4216: print FILE "$newsrc\n";
4217: close FILE;
4218: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4219: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4220: if ($sext ne "") { # Put the ext. back in to uniquify.
4221: $src =~ s/\.eps$/$sext.eps/;
4222: }
4223: }
4224: }
4225: }
4226: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4227: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4228: return ($path.'/',$file);
4229: }
4230:
4231: sub eps_generation {
4232: my ($src,$file,$width_param) = @_;
4233: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4234: my $temp_file = Apache::File->new('>>'.$filename);
4235: print $temp_file "$src\n";
4236: my $newsrc = $src;
4237: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4238: $newsrc=~s/\/home\/httpd\/html\/res//;
4239: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4240: $newsrc=~s/\/\.\//\//;
4241: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4242: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4243: $newsrc=~s/\/home\/httpd\/lonUsers//;
4244: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4245: }
4246: if ($newsrc=~/\/userfiles\//) {
4247: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4248: } else {
4249: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4250: }
4251: }
4252:
4253: sub file_path {
4254: my $src=shift;
4255: my ($file,$path);
4256: if ($src =~ m!(.*)/([^/]*)$!) {
4257: $file = $2;
4258: $path = $1.'/';
4259: }
4260: return $file,$path;
4261: }
4262: # Converts a measurement in to mm from any of
4263: # the other valid LaTeX units of measure.
4264: # If the units of measure are missing from the
4265: # parameter, it is assumed to be in and returned
4266: # with mm units of measure
4267: sub recalc {
4268: my $argument = shift;
4269: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4270: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4271: my $value=$1;
4272: my $units=$2;
4273: if ($units eq 'cm') {
4274: $value*=10;
4275: } elsif ($units eq 'in') {
4276: $value*=25.4;
4277: } elsif ($units eq 'pc') {
4278: $value*=(25.4*12/72.27);
4279: } elsif ($units eq 'pt') {
4280: $value*=(25.4/72.27);
4281: }
4282: return $value.' mm';
4283: }
4284:
4285: sub LATEX_length {
4286: my $garbage=shift;
4287: $garbage=~s/^\s+$//;
4288: $garbage=~s/^\s+(\S.*)/$1/;#space before
4289: $garbage=~s/(.*\S)\s+$/$1/;#space after
4290: $garbage=~s/(\s)+/$1/;#only one space
4291: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4292: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4293: $garbage=~s/([^\\])\$/$1/g;#$
4294: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4295: $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;
4296: $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;
4297: $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;
4298: $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;
4299: $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;
4300: $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;
4301: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4302: #remove some other LaTeX command
4303: $garbage=~s|\\(\w+)\\|\\|g;
4304: $garbage=~s|\\(\w+)(\s*)|$2|g;
4305: $garbage=~s|\+|11|g;
4306: my $value=length($garbage);
4307: return $value;
4308: }
4309:
4310:
4311: # is_inside_of $tagstack $tag
4312: # This sub returns true if the current state of Xml processing
4313: # is inside of the tag.
4314: # Parameters:
4315: # tagstack - The tagstack from the parser.
4316: # tag - The tag (without the <>'s.).
4317: # Sample usage:
4318: # if (is_inside_of($tagstack "table")) {
4319: # # I'm in a table....
4320: # }
4321: sub is_inside_of {
4322: my ($tagstack, $tag) = @_;
4323: my @stack = @$tagstack;
4324: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4325: if ($stack[$i] eq $tag) {
4326: return 1;
4327: }
4328: }
4329: return 0;
4330: }
4331:
4332:
4333: 1;
4334: __END__
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