1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.329 2006/05/17 22:08:08 albertel 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: $Apache::londefdef::list_index=0;
82: undef($Apache::londefdef::head);
83: undef($Apache::londefdef::title);
84: }
85:
86: #======================= TAG SUBROUTINES =====================
87: #-- <output>
88: sub start_output {
89: my ($target) = @_;
90: if ($target eq 'meta') { $Apache::lonxml::metamode--; }
91: return '';
92: }
93: sub end_output {
94: my ($target) = @_;
95: if ($target eq 'meta') { $Apache::lonxml::metamode++; }
96: return '';
97: }
98: #-- <m> tag
99: sub start_m {
100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
101: my $currentstring = '';
102: my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
103: if ($target eq 'web' || $target eq 'analyze') {
104: &Apache::lonxml::debug("M is starting with:$inside:");
105: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
106: if ($eval eq 'on') {
107: $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
108: #&Apache::lonxml::debug("M is evaulated to:$inside:");
109: }
110: my $tex = $inside;
111: my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
112: $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
113: if ($Apache::lontexconvert::errorstring) {
114: my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
115: $tex = &HTML::Entities::encode($tex,'<>&"');
116: my ($linenumber) =
117: ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
118: if (defined($linenumber)) {
119: my @tex=split("\n",$tex);
120: $tex[$linenumber]='<b><font color="red">'.
121: $tex[$linenumber].'</font></b>';
122: $tex=join("\n",@tex);
123: }
124: &Apache::lonxml::warning($errormsg.$tex.'</pre>');
125: $Apache::lontexconvert::errorstring='';
126: }
127: #&Apache::lonxml::debug("M is ends with:$currentstring:");
128: $Apache::lonxml::post_evaluate=0;
129: } elsif ($target eq 'tex') {
130: $currentstring = $inside;
131: my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
132: if ($eval eq 'on') {
133: $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
134: }
135: if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
136: # detect simple math mode entry exits, and convert them
137: # to use \ensuremath
138: if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
139: $currentstring=~s/^(\s*)\$/$1/;
140: $currentstring=~s/\$(\s*)$/$1/;
141: $currentstring='\ensuremath{'.$currentstring.'}';
142: }
143: $Apache::lonxml::post_evaluate=0;
144: }
145: return $currentstring;
146: }
147:
148: sub end_m {
149: my ($target,$token) = @_;
150: my $currentstring = '';
151: if ($target eq 'tex') {
152: $currentstring = "";
153: }
154: return $currentstring;
155: }
156:
157: sub start_tthoption {
158: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
159: my $result;
160: if ($target eq 'web' || $target eq 'webgrade') {
161: my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
162: $style);
163: $inside=~s/^\s*//;
164: if ($env{'browser.mathml'}) {
165: &tth::ttmoptions($inside);
166: } else {
167: &tth::tthoptions($inside);
168: }
169: }
170: return $result;
171: }
172:
173: sub end_tthoption {
174: my ($target,$token) = @_;
175: my $result;
176: return $result;
177: }
178:
179: #-- <html> tag (end tag optional)
180: sub start_html {
181: my ($target,$token) = @_;
182: my $currentstring = '';
183: if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
184: # start_body() takes care of emitting the <html>
185: } elsif ($target eq 'tex') {
186: $currentstring .= '\documentclass[letterpaper,twoside]{article}';
187: if (($env{'form.latex_type'}=~'batchmode') ||
188: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
189: $currentstring .= '\newcommand{\keephidden}[1]{}'.
190: '\renewcommand{\deg}{$^{\circ}$}'.
191: '\usepackage{multirow}'.
192: '\usepackage{longtable}'.
193: '\usepackage{textcomp}'.
194: '\usepackage{makeidx}'.
195: '\usepackage[dvips]{graphicx}'.
196: '\usepackage{wrapfig}'.
197: '\usepackage{picins}'.
198: '\usepackage{epsfig}'.
199: '\usepackage{calc}'.
200: '\usepackage{amsmath}'.
201: '\usepackage{amssymb}'.
202: '\usepackage{amsfonts}'.
203: '\usepackage{amsthm}'.
204: '\usepackage{amscd}'.
205: '\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}}'.
206: '\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}}';
207: }
208: return $currentstring;
209: }
210:
211: sub end_html {
212: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
213: my $currentstring = '';
214: if ($target eq 'web' || $target eq 'webgrade') {
215: # end_body takes care of the </html>
216: }
217: return $currentstring;
218: }
219:
220: #-- <head> tag (end tag optional)
221: sub start_head {
222: my ($target,$token) = @_;
223: my $currentstring = '';
224: if ($target eq 'web' || $target eq 'webgrade') {
225: &Apache::lonxml::startredirection();
226: }
227: return $currentstring;
228: }
229:
230: sub end_head {
231: my ($target,$token) = @_;
232: my $currentstring = '';
233: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
234: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
235: # in case there is a </head> but no <head>
236: if ($Apache::lonxml::redirection) {
237: $Apache::londefdef::head = &Apache::lonxml::endredirection();
238: }
239: }
240: return $currentstring;
241: }
242:
243: #-- <map> tag (end tag required)
244: sub start_map {
245: my ($target,$token) = @_;
246: my $currentstring = '';
247: if ($target eq 'web' || $target eq 'webgrade') {
248: $currentstring = $token->[4];
249: }
250: return $currentstring;
251: }
252:
253: sub end_map {
254: my ($target,$token) = @_;
255: my $currentstring = '';
256: if ($target eq 'web' || $target eq 'webgrade') {
257: $currentstring = $token->[2];
258: }
259: return $currentstring;
260: }
261:
262: #-- <select> tag (end tag required)
263: sub start_select {
264: my ($target,$token) = @_;
265: my $currentstring = '';
266: if ($target eq 'web' || $target eq 'webgrade') {
267: $currentstring = $token->[4];
268: } elsif ($target eq 'tex') {
269: $Apache::londefdef::select=0;
270: }
271: return $currentstring;
272: }
273:
274: sub end_select {
275: my ($target,$token) = @_;
276: my $currentstring = '';
277: if ($target eq 'web' || $target eq 'webgrade') {
278: $currentstring = $token->[2];
279: }
280: return $currentstring;
281: }
282:
283: #-- <option> tag (end tag optional)
284: sub start_option {
285: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
286: my $currentstring = '';
287: if ($target eq 'web' || $target eq 'webgrade') {
288: $currentstring = $token->[4];
289: } elsif ($target eq 'tex') {
290: $Apache::londefdef::select++;
291: if ($Apache::londefdef::select == 1) {
292: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
293: } else {
294: $currentstring='\keephidden{';
295: }
296: }
297: return $currentstring;
298: }
299:
300: sub end_option {
301: my ($target,$token) = @_;
302: my $currentstring = '';
303: if ($target eq 'web' || $target eq 'webgrade') {
304: $currentstring = $token->[2];
305: } elsif ($target eq 'tex') {
306: $currentstring='}';
307: }
308: return $currentstring;
309: }
310:
311: #-- <input> tag (end tag forbidden)
312: sub start_input {
313: my ($target,$token) = @_;
314: my $currentstring = '';
315: if ($target eq 'web' || $target eq 'webgrade') {
316: $currentstring = $token->[4];
317: }
318: return $currentstring;
319: }
320:
321: sub end_input {
322: my ($target,$token) = @_;
323: my $currentstring = '';
324: if ($target eq 'web' || $target eq 'webgrade') {
325: $currentstring = $token->[2];
326: }
327: return $currentstring;
328: }
329:
330: #-- <textarea> tag (end tag required)
331: sub start_textarea {
332: my ($target,$token) = @_;
333: my $currentstring = '';
334: if ($target eq 'web' || $target eq 'webgrade') {
335: $currentstring = $token->[4];
336: }
337: return $currentstring;
338: }
339:
340: sub end_textarea {
341: my ($target,$token) = @_;
342: my $currentstring = '';
343: if ($target eq 'web' || $target eq 'webgrade') {
344: $currentstring = $token->[2];
345: }
346: return $currentstring;
347: }
348:
349: #-- <form> tag (end tag required)
350: sub start_form {
351: my ($target,$token) = @_;
352: my $currentstring = '';
353: if ($target eq 'web' || $target eq 'webgrade') {
354: $currentstring = $token->[4];
355: }
356: return $currentstring;
357: }
358:
359: sub end_form {
360: my ($target,$token) = @_;
361: my $currentstring = '';
362: if ($target eq 'web' || $target eq 'webgrade') {
363: $currentstring = $token->[2];
364: }
365: return $currentstring;
366: }
367:
368: #-- <title> tag (end tag required)
369: sub start_title {
370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
371: my $currentstring = '';
372: if ($target eq 'web' || $target eq 'webgrade') {
373: $Apache::londefdef::title =
374: &Apache::lonxml::get_all_text('/title',$parser,$style);
375: } elsif ($target eq 'tex') {
376: $currentstring .= '\keephidden{Title of the document: '
377: }
378: if ($target eq 'meta') {
379: $currentstring='<title>';
380: &start_output($target);
381: }
382: return $currentstring;
383: }
384:
385: sub end_title {
386: my ($target,$token) = @_;
387: my $currentstring = '';
388: if ($target eq 'web' || $target eq 'webgrade') {
389: # start_title takes care of swallowing the title
390: } elsif ($target eq 'tex') {
391: $currentstring .= '}';
392: }
393: if ($target eq 'meta') {
394: &end_output($target);
395: $currentstring='</title>';
396: }
397: return $currentstring;
398: }
399:
400: #-- <meta> tag (end tag forbidden)
401: sub start_meta {
402: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
403: my $currentstring = '';
404: if ($target eq 'web' || $target eq 'webgrade') {
405: my $args='';
406: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
407: if ($args eq '') {
408: &Apache::lonxml::get_all_text("/meta",$parser,$style);
409: } else {
410: $currentstring = $token->[4];
411: }
412: } elsif ($target eq 'meta') {
413: unless (&Apache::lonxml::get_param
414: ('http-equiv',$parstack,$safeeval,undef,1)) {
415: my $name=$token->[2]->{'name'};
416: $name=~tr/A-Z/a-z/;
417: $name=~s/\s/\_/gs;
418: $name=~s/\W//gs;
419: if ($name) {
420: $currentstring='<'.$name;
421: my $display=&Apache::lonxml::get_param
422: ('display',$parstack,$safeeval,undef,1);
423: if ($display) {
424: $display=~s/\"/\'/g;
425: $currentstring.=' display="'.$display.'"';
426: }
427: $currentstring.='>'.
428: &Apache::lonxml::get_param
429: ('content',$parstack,$safeeval,undef,1).
430: '</'.$name.'>';
431: }
432: my $display=&Apache::lonxml::get_param
433: ('display',$parstack,$safeeval,undef,1);
434: if ($display) {
435: $display=&HTML::Entities::encode($display,'<>&"');
436: $currentstring.='<'.$name.'.display>'.$display.
437: '</'.$name.'.display>';
438: }
439: }
440: } elsif ($target eq 'tex') {
441: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
442: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
443: if ((not defined $content) && (not defined $name)) {
444: &Apache::lonxml::startredirection();
445: }
446: }
447: return $currentstring;
448: }
449:
450: sub end_meta {
451: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
452: my $currentstring = '';
453: if ($target eq 'web' || $target eq 'webgrade') {
454: my $args='';
455: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
456: if ($args ne '') {
457: $currentstring = $token->[4];
458: }
459: } elsif ($target eq 'tex') {
460: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
461: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
462: if ((not defined $content) && (not defined $name)) {
463: &Apache::lonxml::endredirection();
464: }
465: }
466: return $currentstring;
467: }
468:
469: # accessrule
470: sub start_accessrule {
471: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
472: my $currentstring = '';
473: my $eff=&Apache::lonxml::get_param
474: ('effect',$parstack,$safeeval,undef,1);
475: my $realm=&Apache::lonxml::get_param
476: ('realm',$parstack,$safeeval,undef,1);
477: my $role=&Apache::lonxml::get_param
478: ('role',$parstack,$safeeval,undef,1);
479: $realm=~s/\s+//g;
480: $realm=~s/\//\_/g;
481: $realm=~s/^\_//;
482: $realm=~s/\W/\;/g;
483: $role=~s/\s+//g;
484: $role=~s/\//\_/g;
485: $role=~s/\W/\;/g;
486: if ($target eq 'web') {
487: my $args='';
488: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
489: if ($args eq '') {
490: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
491: } else {
492: $currentstring = $token->[4];
493: }
494: }
495: if ($target eq 'meta') {
496: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
497: }
498: return $currentstring;
499: }
500:
501: sub end_accessrule {
502: my ($target,$token,$tagstack,$parstack,$parser) = @_;
503: my $currentstring = '';
504: if ($target eq 'web') {
505: my $args='';
506: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
507: if ($args ne '') {
508: $currentstring = $token->[4];
509: }
510: }
511: return $currentstring;
512: }
513:
514: #-- <body> tag (end tag required)
515: sub start_body {
516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
517: my $currentstring = '';
518:
519: if ($target eq 'web' || $target eq 'webgrade') {
520: if ($Apache::lonhomework::parsing_a_problem) {
521: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
522: return '';
523: }
524:
525: if (&is_inside_of($tagstack, "head")) {
526: &end_head(@_);
527: }
528: $currentstring =
529: &Apache::loncommon::start_page($Apache::londefdef::title,
530: $Apache::londefdef::head,
531: {'add_entries' => $token->[2],
532: 'no_title' => 1,
533: 'force_register' => 1});
534:
535: if ($env{'request.state'} ne 'published') {
536: $currentstring.=(<<EDITBUTTON);
537: <form method="post">
538: <input type="submit" name="editmode" accesskey="e" value="Edit" />
539: </form>
540: <br />
541: EDITBUTTON
542: }
543: $currentstring.=&Apache::lonxml::message_location();
544: } elsif ($target eq 'tex') {
545: $currentstring = '\begin{document}';
546: }
547: return $currentstring;
548: }
549:
550: sub end_body {
551: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
552: my $currentstring = &end_p(); # Close off unclosed <p>
553: if ($target eq 'web' || $target eq 'webgrade') {
554: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
555: } elsif ($target eq 'tex') {
556: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
557: }
558: return $currentstring;
559: }
560:
561: # \begin{center} causes a new paragprah spacing that looks odd inside
562: # of a table cell
563: sub center_correction { return '\vspace*{-6 mm}'; }
564: #-- <center> tag (end tag required)
565: sub start_center {
566: my ($target,$token,$tagstack) = @_;
567: my $currentstring = &end_p(); # Close off any prior para.
568: if ($target eq 'web' || $target eq 'webgrade') {
569: $currentstring .= $token->[4];
570: } elsif ($target eq 'tex') {
571: if (&is_inside_of($tagstack, "table")) {
572: $currentstring .= ¢er_correction();
573: }
574: $currentstring .= '\begin{center}';
575: }
576: return $currentstring;
577: }
578:
579: sub end_center {
580: my ($target,$token,$tagstack) = @_;
581: my $currentstring = '';
582: if ($target eq 'web' || $target eq 'webgrade') {
583: $currentstring = $token->[2];
584: } elsif ($target eq 'tex') {
585: $currentstring = '\end{center}';
586: }
587: return $currentstring;
588: }
589:
590: #-- <b> tag (end tag required)
591: # NOTE: In TeX mode disables internal <p>
592: sub start_b {
593: my ($target,$token) = @_;
594: my $currentstring = '';
595: if ($target eq 'web' || $target eq 'webgrade') {
596: $currentstring = $token->[4];
597: } elsif ($target eq 'tex') {
598: &disable_para();
599: $currentstring .= '\textbf{';
600: }
601: return $currentstring;
602: }
603:
604: sub end_b {
605: my ($target,$token) = @_;
606: my $currentstring = '';
607: if ($target eq 'web' || $target eq 'webgrade') {
608: $currentstring = $token->[2];
609: } elsif ($target eq 'tex') {
610: &enable_para();
611: $currentstring = '}';
612: }
613: return $currentstring;
614: }
615:
616: #-- <strong> tag (end tag required)
617: # NOTE: in TeX mode disables internal <p>
618: sub start_strong {
619: my ($target,$token) = @_;
620: my $currentstring = '';
621: if ($target eq 'web' || $target eq 'webgrade') {
622: $currentstring = $token->[4];
623: } elsif ($target eq 'tex') {
624: &disable_para();
625: $currentstring = '\textbf{';
626: }
627: return $currentstring;
628: }
629:
630: sub end_strong {
631: my ($target,$token) = @_;
632: my $currentstring = '';
633: if ($target eq 'web' || $target eq 'webgrade') {
634: $currentstring = $token->[2];
635: } elsif ($target eq 'tex') {
636: &enable_para();
637: $currentstring = '}';
638: }
639: return $currentstring;
640: }
641:
642: #-- <h1> tag (end tag required)
643: sub start_h1 {
644: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
645: my $currentstring = &end_p(); # Close off any prior para.
646: if ($target eq 'web' || $target eq 'webgrade') {
647: $currentstring .= $token->[4];
648: } elsif ($target eq 'tex') {
649: my $pre;
650: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
651: if ($align eq 'center') {
652: $pre='\begin{center}';
653: } elsif ($align eq 'left') {
654: $pre='\rlap{';
655: } elsif ($align eq 'right') {
656: $pre=' \hfill \llap{';
657: }
658: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
659: if (not defined $TeXsize) {$TeXsize="large";}
660: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
661: } elsif ($target eq 'meta') {
662: $currentstring.='<subject>';
663: &start_output($target);
664: }
665: return $currentstring;
666: }
667:
668: sub end_h1 {
669: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
670: my $currentstring = '';
671: if ($target eq 'web' || $target eq 'webgrade') {
672: $currentstring .= $token->[2];
673: } elsif ($target eq 'tex') {
674: my $post='\vskip 0 mm ';
675: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
676: if ($align eq 'center') {
677: $post='\end{center}';
678: } elsif ($align eq 'left') {
679: $post='} \hfill'.'\vskip 0 mm ';
680: } elsif ($align eq 'right') {
681: $post='}'.'\vskip 0 mm ';
682: }
683: $currentstring .= '}}'.$post;
684: } elsif ($target eq 'meta') {
685: &end_output($target);
686: $currentstring='</subject>';
687: }
688: return $currentstring;
689: }
690:
691: #-- <h2> tag
692: sub start_h2 {
693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
694: my $currentstring = &end_p(); # Close off any prior para.
695: if ($target eq 'web' || $target eq 'webgrade') {
696: $currentstring .= $token->[4];
697: } elsif ($target eq 'tex') {
698: my $pre;
699: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
700: if ($align eq 'center') {
701: $pre='\begin{center}';
702: } elsif ($align eq 'left') {
703: $pre='\rlap{';
704: } elsif ($align eq 'right') {
705: $pre=' \hfill \llap{';
706: }
707: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
708: if (not defined $TeXsize) {$TeXsize="large";}
709: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
710: }
711: return $currentstring;
712: }
713:
714: sub end_h2 {
715: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
716: my $currentstring = '';
717: if ($target eq 'web' || $target eq 'webgrade') {
718: $currentstring .= $token->[2];
719: } elsif ($target eq 'tex') {
720: my $post='\vskip 0 mm ';
721: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
722: if ($align eq 'center') {
723: $post='\end{center}';
724: } elsif ($align eq 'left') {
725: $post='} \hfill'.'\vskip 0 mm ';
726: } elsif ($align eq 'right') {
727: $post='}'.'\vskip 0 mm ';
728: }
729: $currentstring .= '}}'.$post;
730: }
731: return $currentstring;
732: }
733:
734: #-- <h3> tag
735: sub start_h3 {
736: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
737: my $currentstring = &end_p(); # Close off any prior para.
738: if ($target eq 'web' || $target eq 'webgrade') {
739: $currentstring .= $token->[4];
740: } elsif ($target eq 'tex') {
741: my $pre;
742: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
743: if ($align eq 'center') {
744: $pre='\begin{center}';
745: } elsif ($align eq 'left') {
746: $pre='\rlap{';
747: } elsif ($align eq 'right') {
748: $pre=' \hfill \llap{';
749: }
750: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
751: if (not defined $TeXsize) {$TeXsize="large";}
752: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
753: }
754: return $currentstring;
755: }
756:
757: sub end_h3 {
758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
759: my $currentstring = '';
760: if ($target eq 'web' || $target eq 'webgrade') {
761: $currentstring .= $token->[2];
762: } elsif ($target eq 'tex') {
763: my $post='\vskip 0 mm ';
764: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
765: if ($align eq 'center') {
766: $post='\end{center}';
767: } elsif ($align eq 'left') {
768: $post='} \hfill'.'\vskip 0 mm ';
769: } elsif ($align eq 'right') {
770: $post='}'.'\vskip 0 mm ';
771: }
772: $currentstring .= '}}'.$post;
773: }
774: return $currentstring;
775: }
776:
777: #-- <h4> tag
778: sub start_h4 {
779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
780: my $currentstring = &end_p(); # Close off any prior para.
781: if ($target eq 'web' || $target eq 'webgrade') {
782: $currentstring .= $token->[4];
783: } elsif ($target eq 'tex') {
784: my $pre;
785: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
786: if ($align eq 'center') {
787: $pre='\begin{center}';
788: } elsif ($align eq 'left') {
789: $pre='\rlap{';
790: } elsif ($align eq 'right') {
791: $pre=' \hfill \llap{';
792: }
793: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
794: if (not defined $TeXsize) {$TeXsize="large";}
795: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
796: }
797: return $currentstring;
798: }
799:
800: sub end_h4 {
801: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
802: my $currentstring = '';
803: if ($target eq 'web' || $target eq 'webgrade') {
804: $currentstring .= $token->[2];
805: } elsif ($target eq 'tex') {
806: my $post='\vskip 0 mm ';
807: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
808: if ($align eq 'center') {
809: $post='\end{center}';
810: } elsif ($align eq 'left') {
811: $post='} \hfill'.'\vskip 0 mm ';
812: } elsif ($align eq 'right') {
813: $post='}'.'\vskip 0 mm ';
814: }
815: $currentstring .= '}}'.$post;
816: }
817: return $currentstring;
818: }
819:
820: #-- <h5> tag
821: sub start_h5 {
822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
823: my $currentstring = &end_p(); # Close off any prior paras.
824: if ($target eq 'web' || $target eq 'webgrade') {
825: $currentstring .= $token->[4];
826: } elsif ($target eq 'tex') {
827: my $pre;
828: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
829: if ($align eq 'center') {
830: $pre='\begin{center}';
831: } elsif ($align eq 'left') {
832: $pre='\rlap{';
833: } elsif ($align eq 'right') {
834: $pre=' \hfill \llap{';
835: }
836: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
837: if (not defined $TeXsize) {$TeXsize="large";}
838: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
839: }
840: return $currentstring;
841: }
842:
843: sub end_h5 {
844: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
845: my $currentstring = '';
846: if ($target eq 'web' || $target eq 'webgrade') {
847: $currentstring .= $token->[2];
848: } elsif ($target eq 'tex') {
849: my $post='\vskip 0 mm ';
850: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
851: if ($align eq 'center') {
852: $post='\end{center}';
853: } elsif ($align eq 'left') {
854: $post='} \hfill'.'\vskip 0 mm ';
855: } elsif ($align eq 'right') {
856: $post='}'.'\vskip 0 mm ';
857: }
858: $currentstring .= '}}'.$post;
859: }
860: return $currentstring;
861: }
862:
863: #-- <h6> tag
864: sub start_h6 {
865: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
866: my $currentstring = &end_p(); # Close off any prior paras.
867: if ($target eq 'web' || $target eq 'webgrade') {
868: $currentstring .= $token->[4];
869: } elsif ($target eq 'tex') {
870: my $pre;
871: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
872: if ($align eq 'center') {
873: $pre='\begin{center}';
874: } elsif ($align eq 'left') {
875: $pre='\rlap{';
876: } elsif ($align eq 'right') {
877: $pre=' \hfill \llap{';
878: }
879: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
880: if (not defined $TeXsize) {$TeXsize="large";}
881: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
882: }
883: return $currentstring;
884: }
885:
886: sub end_h6 {
887: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
888: my $currentstring = '';
889: if ($target eq 'web' || $target eq 'webgrade') {
890: $currentstring .= $token->[2];
891: } elsif ($target eq 'tex') {
892: my $post='\vskip 0 mm ';
893: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
894: if ($align eq 'center') {
895: $post='\end{center}';
896: } elsif ($align eq 'left') {
897: $post='} \hfill'.'\vskip 0 mm ';
898: } elsif ($align eq 'right') {
899: $post='}'.'\vskip 0 mm ';
900: }
901: $currentstring .= '}}'.$post;
902: }
903: return $currentstring;
904: }
905:
906: #--- <cite> tag (end tag required)
907: sub start_cite {
908: my ($target,$token) = @_;
909: my $currentstring = '';
910: if ($target eq 'web' || $target eq 'webgrade') {
911: $currentstring .= $token->[4];
912: } elsif ($target eq 'tex') {
913: $currentstring .= '\textit{';
914: }
915: return $currentstring;
916: }
917:
918: sub end_cite {
919: my ($target,$token) = @_;
920: my $currentstring = '';
921: if ($target eq 'web' || $target eq 'webgrade') {
922: $currentstring .= $token->[2];
923: } elsif ($target eq 'tex') {
924: $currentstring .= '}';
925: }
926: return $currentstring;
927: }
928:
929: #-- <i> tag (end tag required)
930: sub start_i {
931: my ($target,$token) = @_;
932: my $currentstring = '';
933: if ($target eq 'web' || $target eq 'webgrade') {
934: $currentstring .= $token->[4];
935: } elsif ($target eq 'tex') {
936: $currentstring .= '\textit{';
937: }
938: return $currentstring;
939: }
940:
941: sub end_i {
942: my ($target,$token) = @_;
943: my $currentstring = '';
944: if ($target eq 'web' || $target eq 'webgrade') {
945: $currentstring .= $token->[2];
946: } elsif ($target eq 'tex') {
947: $currentstring .= '}';
948: }
949: return $currentstring;
950: }
951:
952: #-- <address> tag (end tag required)
953: sub start_address {
954: my ($target,$token) = @_;
955: my $currentstring = '';
956: if ($target eq 'web' || $target eq 'webgrade') {
957: $currentstring .= $token->[4];
958: } elsif ($target eq 'tex') {
959: $currentstring .= '\textit{';
960: }
961: return $currentstring;
962: }
963:
964: sub end_address {
965: my ($target,$token) = @_;
966: my $currentstring = '';
967: if ($target eq 'web' || $target eq 'webgrade') {
968: $currentstring .= $token->[2];
969: } elsif ($target eq 'tex') {
970: $currentstring .= '}';
971: }
972: return $currentstring;
973: }
974:
975: #-- <dfn> tag (end tag required)
976: sub start_dfn {
977: my ($target,$token) = @_;
978: my $currentstring = '';
979: if ($target eq 'web' || $target eq 'webgrade') {
980: $currentstring .= $token->[4];
981: } elsif ($target eq 'tex') {
982: $currentstring .= '\textit{';
983: }
984: return $currentstring;
985: }
986:
987: sub end_dfn {
988: my ($target,$token) = @_;
989: my $currentstring = '';
990: if ($target eq 'web' || $target eq 'webgrade') {
991: $currentstring .= $token->[2];
992: } elsif ($target eq 'tex') {
993: $currentstring .= '}';
994: }
995: return $currentstring;
996: }
997:
998: #-- <tt> tag (end tag required)
999: sub start_tt {
1000: my ($target,$token) = @_;
1001: my $currentstring = '';
1002: if ($target eq 'web' || $target eq 'webgrade') {
1003: $currentstring .= $token->[4];
1004: } elsif ($target eq 'tex') {
1005: $currentstring .= '\texttt{';
1006: }
1007: return $currentstring;
1008: }
1009:
1010: sub end_tt {
1011: my ($target,$token) = @_;
1012: my $currentstring = '';
1013: if ($target eq 'web' || $target eq 'webgrade') {
1014: $currentstring .= $token->[2];
1015: } elsif ($target eq 'tex') {
1016: $currentstring .= '}';
1017: }
1018: return $currentstring;
1019: }
1020:
1021: #-- <kbd> tag (end tag required)
1022: sub start_kbd {
1023: my ($target,$token) = @_;
1024: my $currentstring = '';
1025: if ($target eq 'web' || $target eq 'webgrade') {
1026: $currentstring .= $token->[4];
1027: } elsif ($target eq 'tex') {
1028: $currentstring .= '\texttt{';
1029: }
1030: return $currentstring;
1031: }
1032:
1033: sub end_kbd {
1034: my ($target,$token) = @_;
1035: my $currentstring = '';
1036: if ($target eq 'web' || $target eq 'webgrade') {
1037: $currentstring .= $token->[2];
1038: } elsif ($target eq 'tex') {
1039: $currentstring .= '}';
1040: }
1041: return $currentstring;
1042: }
1043:
1044: #-- <code> tag (end tag required)
1045: sub start_code {
1046: my ($target,$token) = @_;
1047: my $currentstring = '';
1048: if ($target eq 'web' || $target eq 'webgrade') {
1049: $currentstring .= $token->[4];
1050: } elsif ($target eq 'tex') {
1051: $currentstring .= '\texttt{';
1052: }
1053: return $currentstring;
1054: }
1055:
1056: sub end_code {
1057: my ($target,$token) = @_;
1058: my $currentstring = '';
1059: if ($target eq 'web' || $target eq 'webgrade') {
1060: $currentstring .= $token->[2];
1061: } elsif ($target eq 'tex') {
1062: $currentstring .= '}';
1063: }
1064: return $currentstring;
1065: }
1066:
1067: #-- <em> tag (end tag required)
1068: sub start_em {
1069: my ($target,$token) = @_;
1070: my $currentstring = '';
1071: if ($target eq 'web' || $target eq 'webgrade') {
1072: $currentstring .= $token->[4];
1073: } elsif ($target eq 'tex') {
1074: $currentstring .= '\emph{';
1075: }
1076: return $currentstring;
1077: }
1078:
1079: sub end_em {
1080: my ($target,$token) = @_;
1081: my $currentstring = '';
1082: if ($target eq 'web' || $target eq 'webgrade') {
1083: $currentstring .= $token->[2];
1084: } elsif ($target eq 'tex') {
1085: $currentstring .= '}';
1086: }
1087: return $currentstring;
1088: }
1089:
1090: #-- <q> tag (end tag required)
1091: sub start_q {
1092: my ($target,$token) = @_;
1093: my $currentstring = '';
1094: if ($target eq 'web' || $target eq 'webgrade') {
1095: $currentstring .= $token->[4];
1096: } elsif ($target eq 'tex') {
1097: $currentstring .= '\emph{';
1098: }
1099: return $currentstring;
1100: }
1101:
1102: sub end_q {
1103: my ($target,$token) = @_;
1104: my $currentstring = '';
1105: if ($target eq 'web' || $target eq 'webgrade') {
1106: $currentstring .= $token->[2];
1107: } elsif ($target eq 'tex') {
1108: $currentstring .= '}';
1109: }
1110: return $currentstring;
1111: }
1112:
1113: # <p> is a bit strange since it does not require a closing </p>
1114: # However in latex, we must often output closing stuff to end
1115: # environments and {}'s etc. Therefore we do all the work
1116: # of figuring out the ending strings in the start tag processing,
1117: # and provide a mechanism to output the stop text external
1118: # to tag processing.
1119: #
1120: {
1121:
1122: my $closing_string = ''; # String required to close <p>
1123:
1124: # Some tags are <p> fragile meaning that <p> inside of them
1125: # does not work within TeX mode. This is managed via the
1126: # counter below:
1127: #
1128:
1129: my $para_disabled = 0;
1130:
1131: sub disable_para {
1132: $para_disabled++;
1133: }
1134: sub enable_para {
1135: $para_disabled--;
1136: }
1137:
1138:
1139: #-- <p> tag (end tag optional)
1140: #optional attribute - align="center|left|right"
1141: sub start_p {
1142: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1143: my $currentstring = '';
1144: if ($target eq 'web' || $target eq 'webgrade') {
1145: $currentstring .= &end_p(); # close off prior para if in progress.
1146: $currentstring .= $token->[4];
1147: if (! ($currentstring =~ /\//)) {
1148: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1149: }
1150: } elsif ($target eq 'tex' && !$para_disabled) {
1151:
1152: $currentstring .= &end_p(); # close off prior para if in progress.
1153: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1154: if ($align eq 'center') {
1155: $currentstring .='\begin{center}\par';
1156: $closing_string = '\end{center}';
1157: if (&is_inside_of($tagstack, "table")) {
1158: $currentstring = ¢er_correction().$currentstring;
1159: }
1160: } elsif ($align eq 'right') {
1161: $currentstring.="\n".'{\flushright ';
1162: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1163: $closing_string= "}\n";
1164: } elsif ($align eq 'left') {
1165: $currentstring.= "\n".'{\flushleft ';
1166: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1167: $closing_string = "}\n";
1168: } else {
1169: $currentstring.='\par ';
1170: if (&is_inside_of($tagstack, 'table')) {
1171: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1172: } else {
1173: $closing_string = '\strut\\\\\strut ';
1174: }
1175: }
1176:
1177: }
1178: return $currentstring;
1179: }
1180: #
1181: # End paragraph processing just requires that we output the
1182: # closing string that was saved and blank it.
1183: sub end_p {
1184: # Note only 'tex' mode uses disable_para and enable_para
1185: # so we don't need to know the target in the check below:
1186:
1187: if (!$para_disabled) {
1188: my $current_string = $closing_string;
1189: $closing_string = ''; # Not in a para anymore.
1190: return $current_string;
1191: } else {
1192: return '';
1193: }
1194:
1195: }
1196: }
1197: #-- <br> tag (end tag forbidden)
1198: sub start_br {
1199: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1200: my $currentstring = '';
1201: if ($target eq 'web' || $target eq 'webgrade') {
1202: $currentstring .= $token->[4];
1203: } elsif ($target eq 'tex') {
1204: my @tempo=@$tagstack;
1205: my $signal=0;
1206: # Not going to factor this to is_inside_of since that would require
1207: # multiple stack traversals.
1208: #
1209: for (my $i=$#tempo;$i>=0;$i--) {
1210: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1211: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
1212: ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1213: $signal=1;
1214: last;
1215: }
1216: }
1217: if ($signal) {
1218: $currentstring .= ' \vskip 0 mm ';
1219: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1220: $currentstring .= '\strut \\\\ \strut ';
1221: }
1222: }
1223: return $currentstring;
1224: }
1225:
1226: sub end_br {
1227: my ($target,$token) = @_;
1228: my $currentstring = '';
1229: if ($target eq 'web' || $target eq 'webgrade') {
1230: $currentstring .= $token->[2];
1231: }
1232: return $currentstring;
1233: }
1234:
1235: #-- <big> tag (end tag required)
1236: sub start_big {
1237: my ($target,$token) = @_;
1238: my $currentstring = '';
1239: if ($target eq 'web' || $target eq 'webgrade') {
1240: $currentstring .= $token->[4];
1241: } elsif ($target eq 'tex') {
1242: $currentstring .= '{\large ';
1243: }
1244: return $currentstring;
1245: }
1246:
1247: sub end_big {
1248: my ($target,$token) = @_;
1249: my $currentstring = '';
1250: if ($target eq 'web' || $target eq 'webgrade') {
1251: $currentstring .= $token->[2];
1252: } elsif ($target eq 'tex') {
1253: $currentstring .= '}';
1254: }
1255: return $currentstring;
1256: }
1257:
1258: #-- <small> tag (end tag required)
1259: sub start_small {
1260: my ($target,$token) = @_;
1261: my $currentstring = '';
1262: if ($target eq 'web' || $target eq 'webgrade') {
1263: $currentstring .= $token->[4];
1264: } elsif ($target eq 'tex') {
1265: $currentstring .= '{\footnotesize ';
1266: }
1267: return $currentstring;
1268: }
1269:
1270: sub end_small {
1271: my ($target,$token) = @_;
1272: my $currentstring = '';
1273: if ($target eq 'web' || $target eq 'webgrade') {
1274: $currentstring .= $token->[2];
1275: } elsif ($target eq 'tex') {
1276: $currentstring .= '}';
1277: }
1278: return $currentstring;
1279: }
1280:
1281: #-- <basefont> tag (end tag forbidden)
1282: sub start_basefont {
1283: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1284: my $currentstring = '';
1285: if ($target eq 'web' || $target eq 'webgrade') {
1286: $currentstring = $token->[4];
1287: } elsif ($target eq 'tex') {
1288: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1289: if (defined $basesize) {
1290: $currentstring = '{\\'.$basesize.' ';
1291: }
1292: }
1293: return $currentstring;
1294: }
1295:
1296: sub end_basefont {
1297: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1298: my $currentstring = '';
1299: if ($target eq 'web' || $target eq 'webgrade') {
1300: $currentstring = $token->[4];
1301: } elsif ($target eq 'tex') {
1302: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1303: if (defined $basesize) {
1304: $currentstring = '}';
1305: }
1306: }
1307: return $currentstring;
1308: }
1309:
1310: #-- <font> tag (end tag required)
1311: sub start_font {
1312: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1313: my $currentstring = '';
1314: if ($target eq 'web' || $target eq 'webgrade') {
1315: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1316: if ($face!~/symbol/i) {
1317: if (($env{'browser.fontenhance'} eq 'on') ||
1318: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1319: }
1320: $currentstring = $token->[4];
1321: } elsif ($target eq 'tex') {
1322: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1323: if (defined $fontsize) {
1324: $currentstring = '{\\'.$fontsize.' ';
1325: }
1326: }
1327: return $currentstring;
1328: }
1329:
1330: sub end_font {
1331: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1332: my $currentstring = '';
1333: if ($target eq 'web' || $target eq 'webgrade') {
1334: $currentstring = $token->[2];
1335: } elsif ($target eq 'tex') {
1336: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1337: if (defined $fontsize) {
1338: $currentstring = '}';
1339: }
1340: }
1341: return $currentstring;
1342: }
1343:
1344: #-- <strike> tag (end tag required)
1345: sub start_strike {
1346: my ($target,$token) = @_;
1347: my $currentstring = '';
1348: if ($target eq 'web' || $target eq 'webgrade') {
1349: $currentstring .= $token->[4];
1350: } elsif ($target eq 'tex') {
1351: &Apache::lonxml::startredirection();
1352: }
1353: return $currentstring;
1354: }
1355:
1356: sub end_strike {
1357: my ($target,$token) = @_;
1358: my $currentstring = '';
1359: if ($target eq 'web' || $target eq 'webgrade') {
1360: $currentstring .= $token->[2];
1361: } elsif ($target eq 'tex') {
1362: $currentstring=&Apache::lonxml::endredirection();
1363: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1364: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1365: $currentstring=~s/(\S)\s*$/$1\}/;
1366: }
1367: return $currentstring;
1368: }
1369:
1370: #-- <s> tag (end tag required)
1371: sub start_s {
1372: my ($target,$token) = @_;
1373: my $currentstring = '';
1374: if ($target eq 'web' || $target eq 'webgrade') {
1375: $currentstring .= $token->[4];
1376: } elsif ($target eq 'tex') {
1377: &Apache::lonxml::startredirection();
1378: }
1379: return $currentstring;
1380: }
1381:
1382: sub end_s {
1383: my ($target,$token) = @_;
1384: my $currentstring = '';
1385: if ($target eq 'web' || $target eq 'webgrade') {
1386: $currentstring .= $token->[2];
1387: } elsif ($target eq 'tex') {
1388: $currentstring=&Apache::lonxml::endredirection();
1389: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1390: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1391: $currentstring=~s/(\S)\s*$/$1\}/;
1392: }
1393: return $currentstring;
1394: }
1395:
1396: #-- <sub> tag (end tag required)
1397: sub start_sub {
1398: my ($target,$token) = @_;
1399: my $currentstring = '';
1400: if ($target eq 'web' || $target eq 'webgrade') {
1401: $currentstring .= $token->[4];
1402: } elsif ($target eq 'tex') {
1403: $currentstring .= '\ensuremath{_{';
1404: }
1405: return $currentstring;
1406: }
1407:
1408: sub end_sub {
1409: my ($target,$token) = @_;
1410: my $currentstring = '';
1411: if ($target eq 'web' || $target eq 'webgrade') {
1412: $currentstring .= $token->[2];
1413: } elsif ($target eq 'tex') {
1414: $currentstring .= '}}';
1415: }
1416: return $currentstring;
1417: }
1418:
1419: #-- <sup> tag (end tag required)
1420: sub start_sup {
1421: my ($target,$token) = @_;
1422: my $currentstring = '';
1423: if ($target eq 'web' || $target eq 'webgrade') {
1424: $currentstring .= $token->[4];
1425: } elsif ($target eq 'tex') {
1426: $currentstring .= '\ensuremath{^{';
1427: }
1428: return $currentstring;
1429: }
1430:
1431: sub end_sup {
1432: my ($target,$token) = @_;
1433: my $currentstring = '';
1434: if ($target eq 'web' || $target eq 'webgrade') {
1435: $currentstring .= $token->[2];
1436: } elsif ($target eq 'tex') {
1437: $currentstring .= '}}';
1438: }
1439: return $currentstring;
1440: }
1441:
1442: #-- <hr> tag (end tag forbidden)
1443: sub start_hr {
1444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1445: my $currentstring = &end_p(); # End enclosing para.
1446: if ($target eq 'web' || $target eq 'webgrade') {
1447: $currentstring .= $token->[4];
1448: } elsif ($target eq 'tex') {
1449: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1450: if (defined $LaTeXwidth) {
1451: if ($LaTeXwidth=~/^%/) {
1452: substr($LaTeXwidth,0,1)='';
1453: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1454: }
1455: } else {
1456: $LaTeXwidth ='0.9\textwidth';
1457: }
1458: my ($pre,$post);
1459: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1460: if (($align eq 'center') || (not defined $align)) {
1461: $pre=''; $post='';
1462: } elsif ($align eq 'left') {
1463: $pre='\rlap{'; $post='} \hfill';
1464: } elsif ($align eq 'right') {
1465: $pre=' \hfill \llap{'; $post='}';
1466: }
1467: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1468: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1469: }
1470: return $currentstring;
1471: }
1472:
1473: sub end_hr {
1474: my ($target,$token) = @_;
1475: my $currentstring = '';
1476: if ($target eq 'web' || $target eq 'webgrade') {
1477: $currentstring .= $token->[2];
1478: }
1479: return $currentstring;
1480: }
1481:
1482: #-- <div> tag (end tag required)
1483: {
1484:
1485: # Since div can be nested, the stack below is used
1486: # in 'tex' mode to store the ending strings
1487: # for the div stack.
1488:
1489: my @div_end_stack;
1490:
1491: sub start_div {
1492: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1493: my $currentstring = &end_p(); # Close enclosing para.
1494: if ($target eq 'web' || $target eq 'webgrade') {
1495: $currentstring .= $token->[4];
1496: }
1497: if ($target eq 'tex') {
1498: # 4 possible alignments: left, right, center, and -missing-.
1499:
1500: my $endstring = '';
1501:
1502: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1503: $safeeval, undef, 1));
1504: if ($align eq 'center') {
1505: $currentstring .= '\begin{center}';
1506: $endstring = '\end{center}';
1507: if (&is_inside_of($tagstack, "table")) {
1508: $currentstring = ¢er_correction().$currentstring;
1509: }
1510: }
1511: elsif ($align eq 'right') {
1512: $currentstring .= '\begin{flushright}';
1513: $endstring .= '\end{flushright}';
1514: } elsif ($align eq 'left') {
1515: $currentstring .= '\begin{flushleft}';
1516: $endstring = '\end{flushleft}';
1517: } else {
1518:
1519: }
1520: $currentstring .= "\n"; # For human readability.
1521: $endstring = "\n$endstring\n"; # For human readability
1522: push(@div_end_stack, $endstring);
1523: }
1524: return $currentstring;
1525: }
1526:
1527: sub end_div {
1528: my ($target,$token) = @_;
1529: my $currentstring = '';
1530: if ($target eq 'web' || $target eq 'webgrade') {
1531: $currentstring .= $token->[2];
1532: }
1533: if ($target eq 'tex') {
1534: my $endstring = pop @div_end_stack;
1535: $currentstring .= $endstring;
1536: }
1537: return $currentstring;
1538: }
1539: }
1540:
1541: #-- <a> tag (end tag required)
1542: sub start_a {
1543: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1544: my $currentstring = '';
1545: if ($target eq 'web' || $target eq 'webgrade') {
1546: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1547: undef,1);
1548: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1549: } elsif ($target eq 'tex') {
1550: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1551: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1552: if ($a=~/\S/) {
1553: $a=~s/([^\\])%/$1\\\%/g;
1554: $currentstring .= '\ref{URI: '.$a.'}';
1555: } elsif ($b=~/\S/) {
1556: $currentstring .= '\ref{Anchor: '.$b.'}';
1557: } else {
1558: $currentstring.='';
1559: }
1560: }
1561: return $currentstring;
1562: }
1563:
1564: sub end_a {
1565: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1566: my $currentstring = '';
1567: if ($target eq 'web' || $target eq 'webgrade') {
1568: $currentstring .= $token->[2];
1569: }
1570: return $currentstring;
1571: }
1572:
1573: #-- <li> tag (end tag optional)
1574: sub start_li {
1575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1576: my $currentstring = '';
1577: if ($target eq 'web' || $target eq 'webgrade') {
1578: $currentstring = $token->[4];
1579: } elsif ($target eq 'tex') {
1580: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1581: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1582: #FIXME need to support types i and I
1583: if ($type=~/disc/) {
1584: $currentstring .= ' \item[$\bullet$] ';
1585: } elsif ($type=~/circle/) {
1586: $currentstring .= ' \item[$\circ$] ';
1587: } elsif ($type=~/square/) {
1588: $currentstring .= ' \item[$\diamond$] ';
1589: } elsif ($type eq '1') {
1590: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1591: } elsif ($type eq 'A') {
1592: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1593: } elsif ($type eq 'a') {
1594: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1595: } elsif ($value ne '') {
1596: $currentstring .= ' \item['.$value.'] ';
1597: } else {
1598: $currentstring .= ' \item ';
1599: }
1600: $Apache::londefdef::list_index++;
1601: }
1602: return $currentstring;
1603: }
1604:
1605: sub end_li {
1606: my ($target,$token) = @_;
1607: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1608: if ($target eq 'web' || $target eq 'webgrade') {
1609: $currentstring .= $token->[2];
1610: }
1611: return $currentstring;
1612: }
1613:
1614: #-- <u> tag (end tag required)
1615: sub start_u {
1616: my ($target,$token) = @_;
1617: my $currentstring = '';
1618: if ($target eq 'web' || $target eq 'webgrade') {
1619: $currentstring .= $token->[4];
1620: } elsif ($target eq 'tex') {
1621: &Apache::lonxml::startredirection();
1622: }
1623: return $currentstring;
1624: }
1625:
1626: sub end_u {
1627: my ($target,$token) = @_;
1628: my $currentstring = '';
1629: if ($target eq 'web' || $target eq 'webgrade') {
1630: $currentstring .= $token->[2];
1631: } elsif ($target eq 'tex') {
1632: $currentstring=&Apache::lonxml::endredirection();
1633: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1634: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1635: $currentstring=~s/(\S)\s*$/$1\}/;
1636: }
1637: return $currentstring;
1638: }
1639:
1640: #-- <ul> tag (end tag required)
1641: sub start_ul {
1642: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1643: my $currentstring = &end_p(); # Close off enclosing list.
1644: if ($target eq 'web' || $target eq 'webgrade') {
1645: $currentstring .= $token->[4];
1646: } elsif ($target eq 'tex') {
1647: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1648: $Apache::londefdef::list_index=0;
1649: if ($TeXtype eq 'disc') {
1650: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1651: '\renewcommand{\labelitemii}{$\bullet$}'.
1652: '\renewcommand{\labelitemiii}{$\bullet$}'.
1653: '\renewcommand{\labelitemiv}{$\bullet$}';
1654: } elsif ($TeXtype eq 'circle') {
1655: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1656: '\renewcommand{\labelitemii}{$\circ$}'.
1657: '\renewcommand{\labelitemiii}{$\circ$}'.
1658: '\renewcommand{\labelitemiv}{$\circ$}';
1659: } elsif ($TeXtype eq 'square') {
1660: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1661: '\renewcommand{\labelitemii}{$\diamond$}'.
1662: '\renewcommand{\labelitemiii}{$\diamond$}'.
1663: '\renewcommand{\labelitemiv}{$\diamond$}';
1664: }
1665: $currentstring .= '\strut \begin{itemize}';
1666: }
1667: return $currentstring;
1668: }
1669:
1670: sub end_ul {
1671: my ($target,$token) = @_;
1672: my $currentstring = '';
1673: if ($target eq 'web' || $target eq 'webgrade') {
1674: $currentstring = $token->[2];
1675: } elsif ($target eq 'tex') {
1676: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1677: '\renewcommand{\labelitemii}{$\bullet$}'.
1678: '\renewcommand{\labelitemiii}{$\bullet$}'.
1679: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1680: }
1681: return $currentstring;
1682: }
1683:
1684: #-- <menu> tag (end tag required)
1685: sub start_menu {
1686: my ($target,$token) = @_;
1687: my $currentstring = '';
1688: if ($target eq 'web' || $target eq 'webgrade') {
1689: $currentstring = $token->[4];
1690: } elsif ($target eq 'tex') {
1691: $currentstring = " \\begin{itemize} ";
1692: }
1693: return $currentstring;
1694: }
1695:
1696: sub end_menu {
1697: my ($target,$token) = @_;
1698: my $currentstring = '';
1699: if ($target eq 'web' || $target eq 'webgrade') {
1700: $currentstring = $token->[2];
1701: } elsif ($target eq 'tex') {
1702: $currentstring = " \\end{itemize}";
1703: }
1704: return $currentstring;
1705: }
1706:
1707: #-- <dir> tag (end tag required)
1708: sub start_dir {
1709: my ($target,$token) = @_;
1710: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1711: if ($target eq 'web' || $target eq 'webgrade') {
1712: $currentstring .= $token->[4];
1713: } elsif ($target eq 'tex') {
1714: $currentstring .= " \\begin{itemize} ";
1715: }
1716: return $currentstring;
1717: }
1718:
1719: sub end_dir {
1720: my ($target,$token) = @_;
1721: my $currentstring = '';
1722: if ($target eq 'web' || $target eq 'webgrade') {
1723: $currentstring = $token->[2];
1724: } elsif ($target eq 'tex') {
1725: $currentstring = " \\end{itemize}";
1726: }
1727: return $currentstring;
1728: }
1729:
1730: #-- <ol> tag (end tag required)
1731: sub start_ol {
1732: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1733: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1734: if ($target eq 'web' || $target eq 'webgrade') {
1735: $currentstring .= $token->[4];
1736: } elsif ($target eq 'tex') {
1737: $Apache::londefdef::list_index=0;
1738: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1739: if ($type eq '1') {
1740: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1741: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1742: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1743: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1744: } elsif ($type eq 'A') {
1745: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1746: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1747: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1748: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1749: } elsif ($type eq 'a') {
1750: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1751: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1752: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1753: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1754: } elsif ($type eq 'i') {
1755: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1756: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1757: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1758: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1759: } elsif ($type eq 'I') {
1760: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1761: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1762: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1763: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1764: }
1765: $currentstring .= '\strut \begin{enumerate}';
1766: }
1767: return $currentstring;
1768: }
1769:
1770: sub end_ol {
1771: my ($target,$token) = @_;
1772: my $currentstring = '';
1773: if ($target eq 'web' || $target eq 'webgrade') {
1774: $currentstring = $token->[2];
1775: } elsif ($target eq 'tex') {
1776: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1777: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1778: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1779: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1780: }
1781: return $currentstring;
1782: }
1783:
1784: #-- <dl> tag (end tag required)
1785: sub start_dl {
1786: my ($target,$token) = @_;
1787: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1788: if ($target eq 'web' || $target eq 'webgrade') {
1789: $currentstring .= $token->[4];
1790: } elsif ($target eq 'tex') {
1791: $currentstring .= '\begin{description}';
1792: $Apache::londefdef::DL++;
1793: push(@Apache::londefdef::description,[]);
1794: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1795: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1796: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1797: }
1798: return $currentstring;
1799: }
1800:
1801: sub end_dl {
1802: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1803: my $currentstring = '';
1804: if ($target eq 'web' || $target eq 'webgrade') {
1805: $currentstring = $token->[2];
1806: } elsif ($target eq 'tex') {
1807: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1808: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1809: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1810: $currentstring.=' '.$element.' ';
1811: }
1812: pop(@Apache::londefdef::description);
1813: $currentstring.='\end{description}';
1814: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1815: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1816: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1817: $Apache::londefdef::DL--;
1818: }
1819: return $currentstring;
1820: }
1821:
1822: #-- <dt> tag (end tag optional)
1823: sub start_dt {
1824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1825: my $currentstring='';
1826: if ($target eq 'web' || $target eq 'webgrade') {
1827: $currentstring = $token->[4];
1828: } elsif ($target eq 'tex') {
1829: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1830: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1831: &Apache::lonxml::startredirection();
1832: $Apache::londefdef::DT[-1]++;
1833: $Apache::londefdef::seenDT[-1]=1;
1834: }
1835: return $currentstring;
1836: }
1837:
1838: sub end_dt {
1839: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1840: my $currentstring = '';
1841: if ($target eq 'web' || $target eq 'webgrade') {
1842: $currentstring = $token->[2];
1843: } elsif ($target eq 'tex') {
1844: if ($Apache::londefdef::DT[-1]) {
1845: my $data=&item_cleanup();
1846: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1847: $Apache::londefdef::DT[-1]--;
1848: }
1849: }
1850: return $currentstring;
1851: }
1852:
1853: sub item_cleanup {
1854: my $item=&Apache::lonxml::endredirection();
1855: $item=~s/\\begin{center}//g;
1856: $item=~s/\\end{center}//g;
1857: return $item;
1858: }
1859:
1860: #-- <dd> tag (end tag optional)
1861: sub start_dd {
1862: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1863: my $currentstring = '';
1864: if ($target eq 'web' || $target eq 'webgrade') {
1865: $currentstring = $token->[4];
1866: } elsif ($target eq 'tex') {
1867: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1868: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1869: if (!$Apache::londefdef::seenDT[-1]) {
1870: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1871: }
1872: push(@{$Apache::londefdef::description[-1]},'');
1873: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1874: $Apache::londefdef::DD[-1]++;
1875: &Apache::lonxml::startredirection();
1876: }
1877: return $currentstring;
1878: }
1879:
1880: sub end_dd {
1881: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1882: my $currentstring = '';
1883: if ($target eq 'web' || $target eq 'webgrade') {
1884: $currentstring = $token->[2];
1885: } elsif ($target eq 'tex') {
1886: $Apache::londefdef::description[-1]->[-1].=
1887: &Apache::lonxml::endredirection().' \vskip 0mm ';
1888: $Apache::londefdef::DD[-1]--;
1889: }
1890: return $currentstring;
1891: }
1892:
1893: #-- <table> tag (end tag required)
1894: # <table> also ends any prior <p> that is not closed.
1895: # but, unless I allow <p>'s to nest, that's the
1896: # only way I could think of to allow <p> in
1897: # <tr> <th> bodies
1898: #
1899: #list of supported attributes: border,width,TeXwidth
1900: sub start_table {
1901: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1902: my $textwidth = '';
1903: my $currentstring = &end_p();
1904: if ($target eq 'web' || $target eq 'webgrade') {
1905: $currentstring .= $token->[4];
1906: } elsif ($target eq 'tex') {
1907: my $aa = {};
1908: push @Apache::londefdef::table, $aa;
1909: $Apache::londefdef::table[-1]{'row_number'} = -1;
1910: #maximum table's width (default coincides with text line length)
1911: if ($#Apache::londefdef::table==0) {
1912: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1913: $textwidth=~/(\d+\.?\d*)/;
1914: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1915: } else {
1916: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1917: #the maximum width of nested table is determined by LATeX width of parent cell
1918: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1919: } else {
1920: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1921: $textwidth=$Apache::londefdef::table[-2]{'width'};
1922: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1923: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1924: }
1925: }
1926: }
1927:
1928: # width either comes forced from the TeXwidth or the width parameters.
1929: # in either case it can be a percentage or absolute width.
1930: # in the width case we ignore absolute width
1931: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1932: if (!defined($TeXwidth)) {
1933: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
1934: $safeeval,undef,1);
1935: if ($htmlwidth =~ /%/) {
1936: $TeXwidth = $htmlwidth;
1937: } else {
1938: $TeXwidth = $textwidth;
1939: }
1940: } else {
1941: $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
1942: }
1943: if ($TeXwidth=~/%/) {
1944: $Apache::londefdef::table[-1]{'percent'}=1;
1945: $TeXwidth=~/(\d+)/;
1946: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1947: } else {
1948: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1949: }
1950: # In the end, however the table width cannot be wider than $textwidth...
1951:
1952: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
1953: $Apache::londefdef::table[-1]{'width'} = $textwidth;
1954: }
1955:
1956: #table's border
1957: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1958: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1959: unless (defined $border) { $border = 0; }
1960: if ($border) {
1961: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1962: $Apache::londefdef::table[-1]{'vinc'} = '&';
1963: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1964: } else {
1965: $Apache::londefdef::table[-1]{'hinc'} = '';
1966: $Apache::londefdef::table[-1]{'vinc'} = '&';
1967: $Apache::londefdef::table[-1]{'vvinc'} = '';
1968: }
1969: if ($#Apache::londefdef::table==0) {
1970: # Note that \newline seems to destroy the alignment envs.
1971: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1972: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
1973: }
1974: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1975: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1976: $Apache::londefdef::table[-1]{'objectlen'}=[];
1977: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1978: $Apache::londefdef::table[-1]{'maxlen'}=[];
1979: $Apache::londefdef::table[-1]{'minlen'}=[];
1980: $Apache::londefdef::table[-1]{'content'}=[];
1981: $Apache::londefdef::table[-1]{'align'}=[];
1982: $currentstring.='\keephidden{NEW TABLE ENTRY}';
1983:
1984:
1985: }
1986: return $currentstring;
1987: }
1988:
1989: sub end_table {
1990: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1991: my $currentstring = '';
1992: if ($target eq 'web' || $target eq 'webgrade') {
1993: $currentstring = $token->[2];
1994: } elsif ($target eq 'tex') {
1995: my $inmemory = '';
1996: my $output = '';
1997: my $WARNING='';
1998: #width of columns from TeXwidth attributes
1999:
2000: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2001: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2002: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2003: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2004: }
2005: }
2006: }
2007: #free space and number of empty columns
2008: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2009: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2010: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2011: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2012: $empty_columns++;
2013: } else {
2014: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2015: }
2016: }
2017: #boundaries for contents columns
2018: my @min_len=();#columns can not be narrower
2019: my @max_len=();#maximum length of column
2020: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2021: my ($localmin,$localmax)=(0,0);
2022: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2023: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2024: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2025: }
2026: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2027: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2028: }
2029: }
2030: push @min_len, $localmin;
2031: push @max_len, $localmax;
2032: }
2033: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2034: my $localmin=0,;
2035: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2036: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2037: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2038: }
2039: }
2040: if ($max_len[$jn]<$localmin) {
2041: $max_len[$jn]=$localmin;
2042: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2043: }#object size is bigger
2044: if ($min_len[$jn]<$localmin) {
2045: $min_len[$jn]=$localmin;
2046: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2047: }#object size is bigger
2048: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2049: $min_len[$jn]=0;
2050: $max_len[$jn]=0;
2051: }
2052: }
2053: #final adjustment of column width
2054: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2055: my @adjust=();
2056: #step 1. adjustment by maximum value
2057: my $space_neeeded=0;
2058: for (my $jn=0;$jn<=$#max_len;$jn++) {
2059: $space_neeeded=$space_neeeded+$max_len[$jn];
2060: }
2061: if ($space_neeeded<=$available_space) {
2062: for (my $jn=0;$jn<=$#max_len;$jn++) {
2063: if ($fwidth[$jn]==0) {
2064: $fwidth[$jn]=$max_len[$jn];
2065: }
2066: }
2067: } else {
2068: #step 2. adjustment by minimum value (estimation)
2069: $space_neeeded=0;
2070: for (my $jn=0;$jn<=$#min_len;$jn++) {
2071: $space_neeeded+=$min_len[$jn];
2072: }
2073: if ($space_neeeded>$available_space) {
2074: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2075: for (my $jn=0;$jn<=$#max_len;$jn++) {
2076: if ($fwidth[$jn]==0) {
2077: $fwidth[$jn]=$min_len[$jn];
2078: }
2079: }
2080: #check if we have objects which can be scaled
2081: my $how_many_to_scale=0;
2082: my @to_scale=();
2083: for (my $jn=0;$jn<=$#max_len;$jn++) {
2084: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2085: $how_many_to_scale++;
2086: push @to_scale, $jn;
2087: }
2088: }
2089: if ($how_many_to_scale>0) {
2090: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2091: foreach my $jn (@to_scale) {
2092: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2093: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2094: if ($1 ne '') {
2095: my $current_length=&recalc($1);
2096: $current_length=~/(\d+\.?\d*)/;
2097: $current_length=$current_length-$space_to_adjust;
2098: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2099: }
2100: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2101: if ($1 ne '') {
2102: my $current_length=$1;
2103: $current_length=$current_length-$space_to_adjust;
2104: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2105: }
2106: }
2107: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2108: }
2109: }
2110: } else {
2111: #step 3. adjustment over minimal + corrections
2112: my $enlarge_coef=$available_space/$space_neeeded;
2113: my $acsessive=0;
2114: for (my $jn=0;$jn<=$#min_len;$jn++) {
2115: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2116: if ($adjust[$jn]>$max_len[$jn]) {
2117: $fwidth[$jn]=$max_len[$jn];
2118: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2119: $adjust[$jn]=0;
2120: }
2121: }
2122: if ($acsessive>0) {
2123: #we have an excess of space and can redistribute it
2124: my $notempty_columns=0;
2125: for (my $jn=0;$jn<=$#min_len;$jn++) {
2126: if ($adjust[$jn]!=0) {
2127: $notempty_columns++;
2128: }
2129: }
2130: my $per_column=$acsessive/$notempty_columns;
2131: for (my $jn=0;$jn<=$#min_len;$jn++) {
2132: if ($adjust[$jn]!=0) {
2133: $adjust[$jn]+=$per_column;
2134: $fwidth[$jn]=$adjust[$jn];
2135: }
2136: }
2137: } else {
2138: for (my $jn=0;$jn<=$#min_len;$jn++) {
2139: $fwidth[$jn]=$adjust[$jn];
2140: }
2141: }
2142: }
2143: }
2144: #use all available width if it is defined in % or as TeXwidth
2145: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2146: my $current=0;
2147: for (my $i=0;$i<=$#fwidth;$i++) {
2148: $current+=$fwidth[$i];
2149: }
2150: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2151: for (my $i=0;$i<=$#fwidth;$i++) {
2152: $fwidth[$i]*=$coef;
2153: }
2154: }
2155: #removing of empty columns if allowed
2156: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2157: if ($permission eq 'yes') {
2158: my @cleaned_table=();
2159: my @cleaned_header=();
2160: my $colind=0;
2161: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2162: if ($fwidth[$jn]!=0) {
2163: #we need to copy column
2164: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2165: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2166: $cleaned_header[$colind]=$fwidth[$jn];
2167: }
2168: $colind++;
2169: }
2170: }
2171: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2172: @fwidth=@cleaned_header;
2173: }
2174: #construct header of the table
2175: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2176: for (my $in=0;$in<=$#fwidth;$in++) {
2177: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2178: }
2179: $header_of_table .= '}';
2180: #fill the table
2181: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2182: my $have_rowspan = 0;
2183: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2184:
2185: #-----------------------------------------------------------
2186: # I think this order of doing things will ensure that
2187: # single rowspan, columspan and combined row/colspans will
2188: # work correctly. LaTeX is delicate here.
2189: # RF.
2190:
2191: # Start a rowspan if necessary:
2192:
2193: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2194: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2195: #
2196: # Do the appropriate magic if this has a colspan
2197: #
2198:
2199: if ($colspan > 1) {
2200: $output .= '\multicolumn{'.
2201: $colspan
2202: .'}{|l|}{';
2203: }
2204:
2205: if ($rowspan > 1) {
2206: $have_rowspan++;
2207: $output .= '\multirow{'.$rowspan.'}[0]{'.$fwidth[$jn].'mm}{';
2208: }
2209: if (($rowspan eq '^') || ($rowspan eq '_')) {
2210: $have_rowspan++;
2211: }
2212: #--------------------------------------------------------------
2213:
2214: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2215: $output.=¢er_correction().'\begin{center}';
2216: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2217: $output.=' \hfill \llap{'
2218: }
2219: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2220: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2221: $output.='\end{center}';
2222: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2223: $output.='} ';
2224: }
2225: # Close off any open multirow:
2226:
2227: if ($rowspan > 1) {
2228: $output .= '}';
2229: }
2230: # Close off the colspan...
2231: #
2232: if ($colspan > 1) {
2233: $output .= '}';
2234: $jn += $colspan-1; # Adjust for number of rows really left.
2235: }
2236: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2237: }
2238: # If have_rowspan > 0, and borders are on, then
2239: # we need to do more than put an \hline at the bottom of row.
2240: # we need to do the appropriate \cline to ensure that
2241: # the spanned rows don't have \hlines through them.
2242:
2243: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2244: $output .= ' \\\\ ';
2245: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2246: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2247: if ($rowspan ne "^") {
2248: if (($rowspan <= 1) || ($rowspan eq '_')) {
2249: my $column = $jn+1;
2250: $output .= '\cline{'.$column.'-'.$column.'} ';
2251: }
2252: }
2253: }
2254:
2255: } else {
2256: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2257: }
2258: }
2259: # Note that \newline destroys alignment env's produced by e.g. <div>
2260: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2261: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2262: if ($#Apache::londefdef::table > 0) {
2263: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2264: # Figure out max/and min width by summing us and then
2265: # apply that to the current column of the table we nest in
2266: # if it's larger than the current width or the current width
2267: # is undefined.
2268: #
2269: my $min_nested_width = 0;
2270: my $max_nested_width = 0;
2271: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2272: $min_nested_width += $min_len[$col];
2273: $max_nested_width += $max_len[$col];
2274:
2275: }
2276: # Fudge in an extra 5 mm for borders etc:
2277:
2278: $min_nested_width += 5;
2279: $max_nested_width += 5;
2280:
2281: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2282: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2283: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2284: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2285: }
2286: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2287: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2288: }
2289:
2290: pop @Apache::londefdef::table;
2291: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2292: } else {
2293: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2294: pop @Apache::londefdef::table;
2295: undef @Apache::londefdef::table;
2296: }
2297: }
2298: return $currentstring;
2299: }
2300:
2301: #-- <tr> tag (end tag optional)
2302: sub start_tr {
2303: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2304: my $currentstring = '';
2305: if ($target eq 'web' || $target eq 'webgrade') {
2306: $currentstring = $token->[4];
2307: } elsif ($target eq 'tex') {
2308: $Apache::londefdef::table[-1]{'row_number'}++;
2309: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2310: if ($alignchar ne '') {
2311: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2312: } else {
2313: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2314: }
2315: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2316: #
2317: # Need to save the number of table columns to preserve the max # columns.
2318: #
2319: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2320: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2321: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2322: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2323: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2324: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2325: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2326: }
2327: return $currentstring;
2328: }
2329:
2330: sub end_tr {
2331: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2332: my $currentstring = &end_p(); # Close any pending <p> in the row.
2333: if ($target eq 'web' || $target eq 'webgrade') {
2334: $currentstring .= $token->[2];
2335: } elsif ($target eq 'tex') {
2336: if ($Apache::londefdef::TD_redirection) {
2337: &end_td_tex($parstack,$parser,$safeeval);
2338: }
2339: # Counter columns must be the maximum number of columns seen
2340: # in the table so far so:
2341: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2342: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2343: }
2344:
2345:
2346:
2347: }
2348: return $currentstring;
2349: }
2350:
2351: #-- <td> tag (end tag optional)
2352: sub start_td {
2353: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2354: my $currentstring = '';
2355: if ($target eq 'web' || $target eq 'webgrade') {
2356: $currentstring = $token->[4];
2357: } elsif ($target eq 'tex') {
2358: $Apache::londefdef::TD_redirection = 1;
2359: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2360: }
2361: return $currentstring;
2362: }
2363:
2364: sub tag_check {
2365: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2366: my @ar=@$parstack;
2367: for (my $i=$#ar-1;$i>=0;$i--) {
2368: if (lc($$tagstack[$i]) eq $good_tag) {
2369: &start_td_tex($parstack,$parser,$safeeval);
2370: last;
2371: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2372: splice @ar, $i+1;
2373: &end_td_tex(\@ar,$parser,$safeeval);
2374: &start_td_tex($parstack,$parser,$safeeval);
2375: last;
2376: }
2377: }
2378: return '';
2379: }
2380:
2381: sub start_td_tex {
2382: my ($parstack,$parser,$safeeval) = @_;
2383: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2384: if ($alignchar eq '') {
2385: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2386: }
2387: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2388: $Apache::londefdef::table[-1]{'counter_columns'}++;
2389: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2390: if (defined $TeXwidth) {
2391: my $current_length=&recalc($TeXwidth);
2392: $current_length=~/(\d+\.?\d*)/;
2393: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2394: }
2395: &Apache::lonxml::startredirection();
2396: return '';
2397: }
2398:
2399: sub end_td_tex {
2400: my ($parstack,$parser,$safeeval) = @_;
2401: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2402: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2403: my $data = &Apache::lonxml::endredirection();
2404:
2405: # The rowspan array of the table indicates which cells are part of a span.
2406: # n indicates the start of a span set of n rows.
2407: # ^ indicates a cell that continues a span set.
2408: # _ indicates the cell is at the bottom of a span set.
2409: # If this and subsequent cells are part of a rowspan, we must
2410: # push along the row until we find one that is not.
2411:
2412: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2413: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2414: # Part of a span.
2415: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2416: $current_column++;
2417: }
2418: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2419:
2420:
2421: # Get the column and row spans.
2422: # Colspan can be done via \multicolumn if I can figure out the data structs.
2423:
2424: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2425: if (!$colspan) {
2426: $colspan = 1;
2427: }
2428:
2429: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2430: if (!$rowspan) {
2431: $rowspan = 1;
2432: }
2433:
2434:
2435:
2436: for (my $c = 0; $c < $colspan; $c++) {
2437: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2438: for (my $i = 1; $i < $rowspan; $i++) {
2439: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2440: if ($i == ($rowspan-1)) {
2441: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2442: }
2443: }
2444: }
2445:
2446: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2447: if (defined $TeXwidth) {
2448: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2449: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2450: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2451: } else {
2452: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2453: my $garbage_data=$data;
2454: my $fwidth=0;
2455: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2456: my $current_length=&recalc($1);
2457: $current_length=~/(\d+\.?\d*)/;
2458: if ($fwidth<$1) {$fwidth=$1;}
2459: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2460: }
2461: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2462: my $current_length=$1;
2463: if ($fwidth<$current_length) {$fwidth=$current_length;}
2464: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2465: }
2466: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2467: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2468: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2469: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2470: } elsif ($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)*/) {
2471: my $garbage_data=$data;
2472: my $fwidth=0;
2473: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2474: my $current_length=&recalc($1);
2475: $current_length=~/(\d+\.?\d*)/;
2476: if ($fwidth<$1) {$fwidth=$1;}
2477: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2478: }
2479: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2480: my $current_length=&recalc($1);
2481: $current_length=~/(\d+\.?\d*)/;
2482: if ($fwidth<$1) {$fwidth=$1;}
2483: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2484: }
2485: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2486: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2487: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2488: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2489: $data=~s/\\\\\s*$//;
2490: } else {
2491: $data=~s/^\s+(\S.*)/$1/;
2492: $data=~s/(.*\S)\s+$/$1/;
2493: $data=~s/(\s)+/$1/;
2494: my ($current_length,$min_length)=(0,0);
2495: if ($data=~/\\vskip/) {
2496: my $newdata=$data;
2497: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2498: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2499: foreach my $elementdata (@newdata) {
2500: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2501: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2502: my @words=split(/ /,$elementdata);
2503: foreach my $word (@words) {
2504: my $lengthword=2.5*&LATEX_length($word);
2505: if ($min_length<$lengthword) {$min_length=$lengthword;}
2506: }
2507: }
2508: } else {
2509: $current_length=2.5*&LATEX_length($data);
2510: my @words=split(/ /,$data);
2511: foreach my $word (@words) {
2512: my $lengthword=2*&LATEX_length($word);
2513: if ($min_length<$lengthword) {$min_length=$lengthword;}
2514: }
2515: }
2516: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2517: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2518: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2519: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2520: }
2521: }
2522: # Substitute all of the tables nested in this cell in their appropriate places.
2523:
2524:
2525: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2526: for (my $in=0; $in<=$nested_count; $in++) {
2527: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2528: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2529: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2530: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2531:
2532: }
2533: # Should be be killing off the 'include' elements as they're used up?
2534:
2535: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2536:
2537:
2538:
2539:
2540: # the colspan array will indicate how many columns will be spanned by this
2541: # cell..this requires that counter_columns also be adjusted accordingly
2542: # so that the next bunch of text goes in the right cell. Note that since
2543: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2544: #
2545:
2546: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2547: for (my $i = 0; $i < ($colspan -1); $i++) {
2548: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2549: }
2550: for (my $r = 0; $r < $rowspan; $r++) {
2551: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2552: # Put empty text in spanned cols.
2553:
2554: }
2555:
2556:
2557:
2558: return '';
2559: }
2560:
2561: sub end_td {
2562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2563: my $currentstring = '';
2564: if ($target eq 'web' || $target eq 'webgrade') {
2565: $currentstring = $token->[2];
2566: } elsif ($target eq 'tex') {
2567: $Apache::londefdef::TD_redirection =0;
2568: &end_td_tex($parstack,$parser,$safeeval);
2569: }
2570: return $currentstring;
2571: }
2572:
2573: #-- <th> tag (end tag optional)
2574: sub start_th {
2575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2576: my $currentstring = '';
2577: if ($target eq 'web' || $target eq 'webgrade') {
2578: $currentstring = $token->[4];
2579: } elsif ($target eq 'tex') {
2580: $Apache::londefdef::TD_redirection = 1;
2581: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2582: }
2583: return $currentstring;
2584: }
2585:
2586: sub tagg_check {
2587: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2588: my @ar=@$parstack;
2589: for (my $i=$#ar-1;$i>=0;$i--) {
2590: if (lc($$tagstack[$i]) eq $good_tag) {
2591: &start_th_tex($parstack,$parser,$safeeval);
2592: last;
2593: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2594: splice @ar, $i+1;
2595: &end_th_tex(\@ar,$parser,$safeeval);
2596: &start_th_tex($parstack,$parser,$safeeval);
2597: last;
2598: }
2599: }
2600: return '';
2601: }
2602:
2603: sub start_th_tex {
2604: my ($parstack,$parser,$safeeval) = @_;
2605: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2606: if ($alignchar eq '') {
2607: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2608: }
2609: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2610: $Apache::londefdef::table[-1]{'counter_columns'}++;
2611: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2612: if (defined $TeXwidth) {
2613: my $current_length=&recalc($TeXwidth);
2614: $current_length=~/(\d+\.?\d*)/;
2615: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2616: }
2617: &Apache::lonxml::startredirection();
2618: return '';
2619: }
2620:
2621: sub end_th_tex {
2622: my ($parstack,$parser,$safeeval) = @_;
2623: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2624: my $data=&Apache::lonxml::endredirection();
2625: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2626: if (defined $TeXwidth) {
2627: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2628: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2629: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2630: } else {
2631: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2632: my $garbage_data=$data;
2633: my $fwidth=0;
2634: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2635: my $current_length=&recalc($1);
2636: $current_length=~/(\d+\.?\d*)/;
2637: if ($fwidth<$1) {$fwidth=$1;}
2638: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2639: }
2640: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2641: my $current_length=$1;
2642: if ($fwidth<$current_length) {$fwidth=$current_length;}
2643: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2644: }
2645: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2646: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2647: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2648: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2649: } else {
2650: $data=~s/^\s+(\S.*)/$1/;
2651: $data=~s/(.*\S)\s+$/$1/;
2652: $data=~s/(\s)+/$1/;
2653: my ($current_length,$min_length)=(0,0);
2654: if ($data=~/\\vskip/) {
2655: my $newdata=$data;
2656: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2657: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2658: foreach my $elementdata (@newdata) {
2659: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2660: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2661: my @words=split(/ /,$elementdata);
2662: foreach my $word (@words) {
2663: my $lengthword=2.5*&LATEX_length($word);
2664: if ($min_length<$lengthword) {$min_length=$lengthword;}
2665: }
2666: }
2667: } else {
2668: $current_length=2.5*&LATEX_length($data);
2669: my @words=split(/ /,$data);
2670: foreach my $word (@words) {
2671: my $lengthword=2*&LATEX_length($word);
2672: if ($min_length<$lengthword) {$min_length=$lengthword;}
2673: }
2674: }
2675: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2676: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2677: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2678: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2679: }
2680: }
2681: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2682: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2683: }
2684: #make data bold
2685: $data='\textbf{'.$data.'}';
2686: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2687: return'';
2688: }
2689:
2690: sub end_th {
2691: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2692: my $currentstring = &end_p(); # Close any open <p> in the row.
2693: if ($target eq 'web' || $target eq 'webgrade') {
2694: $currentstring .= $token->[2];
2695: } elsif ($target eq 'tex') {
2696: $Apache::londefdef::TD_redirection =0;
2697: &end_th_tex($parstack,$parser,$safeeval);
2698: }
2699: return $currentstring;
2700: }
2701:
2702: #-- <img> tag (end tag forbidden)
2703: #
2704: # Render the <IMG> tag.
2705: # <IMG> has the following attributes (in addition to the
2706: # standard HTML ones:
2707: # TeXwrap - Governs how the tex target will try to wrap text around
2708: # horizontally aligned images.
2709: # TeXwidth - The width of the image when rendered for print (mm).
2710: # TeXheight - The height of the image when rendered for print (mm)
2711: # (Note there seems to also be support for this as a % of page size)
2712: #
2713: sub start_img {
2714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2715: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2716: undef,1);
2717: if (! $src &&
2718: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2719: ) {
2720: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2721: return '';
2722: }
2723: &Apache::lonxml::extlink($src);
2724: my $currentstring = '';
2725: my $scaling = .3;
2726:
2727: # Render unto browsers that which are the browser's...
2728:
2729: if ($target eq 'web' || $target eq 'webgrade') {
2730: if ($env{'browser.imagesuppress'} ne 'on') {
2731: my $enc = ('yes' eq
2732: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2733: $safeeval)));
2734: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2735: $enc);
2736: } else {
2737: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2738: undef,1);
2739: if (!$alttag) {
2740: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2741: $src);
2742: }
2743: $currentstring.='[IMAGE: '.$alttag.']';
2744: }
2745:
2746: # and render unto TeX that which is LaTeX
2747:
2748: } elsif ($target eq 'tex') {
2749: #
2750: # The alignment will require some superstructure to be put around
2751: # the \includegraphics stuff. At present we can only partially
2752: # simulate the alignments offered by html.
2753: #
2754: #
2755: my $align = lc(&Apache::lonxml::get_param('align',
2756: $parstack,
2757: $safeeval,
2758: undef,1));
2759: if(!$align) {
2760: $align = "bottom"; # This is html's default so it's ours too.
2761: }
2762: #
2763: &Apache::lonxml::debug("Alignemnt = $align");
2764: # LaTeX's image/text wrapping is really bad since it wants to
2765: # make figures float.
2766: # The user has the optional parameter (applicable only to l/r
2767: # alignment to use the picins/parpic directive to get wrapped text
2768: # this is also imperfect.. that's why we give them a choice...
2769: # so they can't yell at us for our choice.
2770: #
2771: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2772: $parstack,
2773: $safeeval,
2774: undef,0);
2775: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2776: if(!$latex_rendering) {
2777: $latex_rendering = "texwrap";
2778: }
2779: # using texwrap inside a table does not work. So, if after all of this,
2780: # texwrap is on, we turn it off if we detect we're in a table:
2781: #
2782: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2783: $latex_rendering = 'parpic';
2784: }
2785:
2786: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2787:
2788: #if original gif/jpg/png file exist do following:
2789: my $origsrc=$src;
2790: my ($path,$file) = &get_eps_image($src);
2791: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2792: &Apache::lonxml::debug("path = $path file = $file src = $src");
2793: if (-e $src) {
2794: &Apache::lonxml::debug("$src exists");
2795: my ($height_param,$width_param)=
2796: &image_size($origsrc,0.3,$parstack,$safeeval);
2797: my $destpath = $path;
2798: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2799: my $destfile = $file;
2800: $destfile =~ s/ /\_/g;
2801: my $size;
2802: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2803: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2804: $size='['.$size;
2805: $size=~s/,$/]/;
2806: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2807: .'\includegraphics'.$size.'{'.$destfile.'} ';
2808:
2809: # If there's an alignment specification we need to honor it here.
2810: # For the horizontal alignments, we will also honor the
2811: # value of the latex specfication. The default is parbox,
2812: # and that's used for illegal values too.
2813: #
2814: # Even though we set a default alignment value, the user
2815: # could have given us an illegal value. In that case we
2816: # just use the default alignment of bottom..
2817: if ($align eq "top") {
2818: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2819: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2820: my $offset = $height_param/2;
2821: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2822: } elsif ($align eq "left") {
2823: if ($latex_rendering eq "parpic") {
2824: $currentstring = '\parpic[l]{'.$currentstring.'}';
2825: } else { # wrapfig render
2826: $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}'
2827: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2828: }
2829: } elsif ($align eq "right") {
2830: if ($latex_rendering eq "parpic") {
2831: $currentstring = '\parpic[r]{'.$currentstring.'}';
2832: } else { # wrapfig rendering
2833: $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}'
2834: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2835:
2836: }
2837: } else { # Bottom is also default.
2838: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2839: }
2840: } else {
2841: &Apache::lonxml::debug("$src does not exist");
2842: #original image file doesn't exist so check the alt attribute
2843: my $alt =
2844: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2845: unless ($alt) {
2846: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2847: }
2848:
2849: if ($alt) { $currentstring .= ' '.$alt.' '; }
2850: }
2851:
2852: # And here's where the semi-quote breaks down: allow the user
2853: # to edit the beast as well by rendering the problem for edit:
2854: } elsif ($target eq 'edit') {
2855: $currentstring .=&Apache::edit::tag_start($target,$token);
2856: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2857: &Apache::edit::browse('src',undef,'alt').' '.
2858: &Apache::edit::search('src',undef,'alt').'<br />';
2859: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2860: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2861: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2862: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2863: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2864: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2865: ['','bottom','middle','top','left','right'],$token,5);
2866: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2867: ['', 'parbox', 'parpic'], $token, 2);
2868: $currentstring .=&Apache::edit::select_arg('Encyrpt URL:','encrypturl',
2869: ['no','yes'], $token, 2);
2870: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2871: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2872: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2873: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2874: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2875:
2876:
2877: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2878: if ($width) { $currentstring.=' width="'.$width.'" '; }
2879: if ($height) { $currentstring.=' height="'.$height.'" '; }
2880: $currentstring .= ' />';
2881: } elsif ($target eq 'modified') {
2882: my ($osrc,$owidth,$oheight)=
2883: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2884: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2885: $safeeval,'src','alt','align',
2886: 'TeXwidth','TeXheight', 'TeXwrap',
2887: 'width','height','encrypturl');
2888: my ($nsrc,$nwidth,$nheight)=
2889: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2890: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2891: &image_replication($loc);
2892: my ($iwidth,$iheight);
2893: if (-e $loc) {
2894: my $image = Image::Magick->new;
2895: $image->Read($loc);
2896: ($iwidth, $iheight) = ($image->Get('width'),
2897: $image->Get('height'));
2898: }
2899: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2900: # changed image or no size specified,
2901: # if they didn't explicitly change the
2902: # width or height use the ones from the image
2903: if ($iwidth && $iheight) {
2904: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2905: $token->[2]{'width'} = $iwidth;$ctag=1;
2906: }
2907: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2908: $token->[2]{'height'}=$iheight;$ctag=1;
2909: }
2910: }
2911: }
2912: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2913: # if we don't have a width or height
2914: if ($iwidth && $cwidth && !$cheight) {
2915: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2916: }
2917: if ($iheight && $cheight && !$cwidth) {
2918: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2919: }
2920: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2921: }
2922:
2923: return $currentstring;
2924: }
2925:
2926: sub end_img {
2927: my ($target,$token) = @_;
2928: my $currentstring = '';
2929: if ($target eq 'web' || $target eq 'webgrade') {
2930: $currentstring = $token->[2];
2931: } elsif ($target eq 'tex') {
2932: $currentstring = '';
2933: }
2934: return $currentstring;
2935: }
2936:
2937: #-- <applet> tag (end tag required)
2938: sub start_applet {
2939: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2940:
2941: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2942: &Apache::lonxml::extlink($code);
2943: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2944: undef,1);
2945: &Apache::lonxml::extlink($archive);
2946: my $currentstring = '';
2947: if ($target eq 'web' || $target eq 'webgrade') {
2948: if ($env{'browser.appletsuppress'} ne 'on') {
2949: $currentstring = &Apache::lonenc::encrypt_ref($token,
2950: {'code'=>$code,
2951: 'archive'=>$archive}
2952: );
2953: } else {
2954: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2955: $safeeval,undef,1);
2956: unless ($alttag) {
2957: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2958: $code);
2959: }
2960: $currentstring='[APPLET: '.$alttag.']';
2961: }
2962: } elsif ($target eq 'tex') {
2963: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2964: $safeeval,undef,1);
2965: unless ($alttag) {
2966: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2967: undef,1);
2968: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2969: $code);
2970: }
2971: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2972: '.}\end{center}';
2973: }
2974: return $currentstring;
2975: }
2976:
2977: sub end_applet {
2978: my ($target,$token) = @_;
2979: my $currentstring = '';
2980: if ($target eq 'web' || $target eq 'webgrade') {
2981: $currentstring = $token->[2];
2982: } elsif ($target eq 'tex') {
2983: }
2984: return $currentstring;
2985: }
2986:
2987: #-- <embed> tag (end tag optional/required)
2988: sub start_embed {
2989: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2990: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
2991: &Apache::lonxml::extlink($src);
2992: my $currentstring = '';
2993: if ($target eq 'web' || $target eq 'webgrade') {
2994: if ($env{'browser.embedsuppress'} ne 'on') {
2995: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
2996: } else {
2997: my $alttag=&Apache::lonxml::get_param
2998: ('alt',$parstack,$safeeval,undef,1);
2999: unless ($alttag) {
3000: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3001: }
3002: $currentstring='[EMBED: '.$alttag.']';
3003: }
3004: } elsif ($target eq 'tex') {
3005: }
3006: return $currentstring;
3007: }
3008:
3009: sub end_embed {
3010: my ($target,$token) = @_;
3011: my $currentstring = '';
3012: if ($target eq 'web' || $target eq 'webgrade') {
3013: $currentstring = $token->[2];
3014: } elsif ($target eq 'tex') {
3015: }
3016: return $currentstring;
3017: }
3018:
3019: #-- <param> tag (end tag forbidden)
3020: sub start_param {
3021: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3022: if (&Apache::lonxml::get_param('name',$parstack,
3023: $safeeval,undef,1)=~/^cabbase$/i) {
3024: my $value=&Apache::lonxml::get_param('value',$parstack,
3025: $safeeval,undef,1);
3026: &Apache::lonxml::extlink($value);
3027: }
3028:
3029: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3030: &Apache::lonxml::extlink($src);
3031: my $currentstring = '';
3032: if ($target eq 'web' || $target eq 'webgrade') {
3033: my %toconvert;
3034: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3035: if ($src) { $toconvert{'src'}= $src; }
3036: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3037: undef,1);
3038: if ($name=~/^cabbase$/i) {
3039: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3040: $safeeval,undef,1);
3041: }
3042: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3043: } elsif ($target eq 'tex') {
3044: }
3045: return $currentstring;
3046: }
3047:
3048: sub end_param {
3049: my ($target,$token) = @_;
3050: my $currentstring = '';
3051: if ($target eq 'web' || $target eq 'webgrade') {
3052: $currentstring = $token->[2];
3053: } elsif ($target eq 'tex') {
3054: }
3055: return $currentstring;
3056: }
3057:
3058: #-- <allow> tag
3059: sub start_allow {
3060: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3061: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3062: &Apache::lonxml::extlink($src);
3063:
3064: if ($target eq 'tex') { &image_replication($src); }
3065: my $result;
3066: if ($target eq 'edit') {
3067: $result .=&Apache::edit::tag_start($target,$token);
3068: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3069: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3070: } elsif ($target eq 'modified') {
3071: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3072: $safeeval,'src');
3073: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3074: }
3075: return $result;
3076: }
3077:
3078: sub end_allow {
3079: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3080: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3081: return '';
3082: }
3083:
3084: #-- Frames (end tag required)
3085: #-- <frameset>
3086: sub start_frameset {
3087: my ($target,$token) = @_;
3088: my $currentstring = ''; # Close any pending para.
3089: if ($target eq 'web' || $target eq 'webgrade') {
3090: $currentstring =
3091: &Apache::loncommon::start_page($Apache::londefdef::title,
3092: $Apache::londefdef::head,
3093: {'add_entries' => $token->[2],
3094: 'no_title' => 1,
3095: 'force_register' => 1,
3096: 'frameset' => 1,});
3097:
3098: }
3099: return $currentstring;
3100: }
3101:
3102: sub end_frameset {
3103: my ($target,$token) = @_;
3104: my $currentstring = '';
3105: if ($target eq 'web' || $target eq 'webgrade') {
3106: $currentstring = $token->[2];
3107: }
3108: return $currentstring;
3109: }
3110:
3111: #-- <xmp> (end tag required)
3112: sub start_xmp {
3113: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3114: my $currentstring = '';
3115: if ($target eq 'web' || $target eq 'webgrade') {
3116: $currentstring .= $token->[4];
3117: } elsif ($target eq 'tex') {
3118: $currentstring .= '\begin{verbatim}';
3119: }
3120: return $currentstring;
3121: }
3122:
3123: sub end_xmp {
3124: my ($target,$token) = @_;
3125: my $currentstring = '';
3126: if ($target eq 'web' || $target eq 'webgrade') {
3127: $currentstring .= $token->[2];
3128: } elsif ($target eq 'tex') {
3129: $currentstring .= '\end{verbatim}';
3130: }
3131: return $currentstring;
3132: }
3133:
3134: #-- <pre> (end tag required)
3135: sub start_pre {
3136: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3137: my $currentstring = &end_p(); # close off pending <p>
3138: if ($target eq 'web' || $target eq 'webgrade') {
3139: $currentstring .= $token->[4];
3140: } elsif ($target eq 'tex') {
3141: $currentstring .= '\begin{verbatim}';
3142: &Apache::lonxml::disable_LaTeX_substitutions();
3143: }
3144: return $currentstring;
3145: }
3146:
3147: sub end_pre {
3148: my ($target,$token) = @_;
3149: my $currentstring = '';
3150: if ($target eq 'web' || $target eq 'webgrade') {
3151: $currentstring .= $token->[2];
3152: } elsif ($target eq 'tex') {
3153: $currentstring .= '\end{verbatim}';
3154: &Apache::lonxml::enable_LaTeX_substitutions();
3155: }
3156: return $currentstring;
3157: }
3158:
3159: #-- <insert>
3160: sub start_insert {
3161: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3162: my $currentstring = '';
3163: if ($target eq 'web' || $target eq 'webgrade') {
3164: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3165: $currentstring .= '<b>'.$display.'</b>';;
3166: }
3167: return $currentstring;
3168: }
3169:
3170: sub end_insert {
3171: my ($target,$token) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web' || $target eq 'webgrade') {
3174: $currentstring .= '';
3175: }
3176: return $currentstring;
3177: }
3178:
3179: #-- <externallink>
3180: sub start_externallink {
3181: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web' || $target eq 'webgrade') {
3184: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3185: $currentstring .= '<b>'.$display.'</b>';;
3186: }
3187: return $currentstring;
3188: }
3189:
3190: sub end_externallink {
3191: my ($target,$token) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web' || $target eq 'webgrade') {
3194: $currentstring .= '';
3195: }
3196: return $currentstring;
3197: }
3198:
3199: #-- <blankspace heigth="">
3200: sub start_blankspace {
3201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3202: my $currentstring = &end_p(); # closes off any unclosed <p>
3203: if ($target eq 'tex') {
3204: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3205: $currentstring .= '\vskip '.$howmuch.' ';
3206: }
3207: return $currentstring;
3208: }
3209:
3210: sub end_blankspace {
3211: my ($target,$token) = @_;
3212: my $currentstring = '';
3213: if ($target eq 'tex') {
3214: $currentstring .= '';
3215: }
3216: return $currentstring;
3217: }
3218:
3219: #-- <abbr> tag (end tag required)
3220: sub start_abbr {
3221: my ($target,$token) = @_;
3222: my $currentstring = '';
3223: if ($target eq 'web' || $target eq 'webgrade') {
3224: $currentstring = $token->[4];
3225: }
3226: return $currentstring;
3227: }
3228:
3229: sub end_abbr {
3230: my ($target,$token) = @_;
3231: my $currentstring = '';
3232: if ($target eq 'web' || $target eq 'webgrade') {
3233: $currentstring = $token->[2];
3234: }
3235: return $currentstring;
3236: }
3237:
3238: #-- <acronym> tag (end tag required)
3239: sub start_acronym {
3240: my ($target,$token) = @_;
3241: my $currentstring = '';
3242: if ($target eq 'web' || $target eq 'webgrade') {
3243: $currentstring = $token->[4];
3244: }
3245: return $currentstring;
3246: }
3247:
3248: sub end_acronym {
3249: my ($target,$token) = @_;
3250: my $currentstring = '';
3251: if ($target eq 'web' || $target eq 'webgrade') {
3252: $currentstring = $token->[2];
3253: }
3254: return $currentstring;
3255: }
3256:
3257: #-- <area> tag (end tag forbidden)
3258: sub start_area {
3259: my ($target,$token) = @_;
3260: my $currentstring = '';
3261: if ($target eq 'web' || $target eq 'webgrade') {
3262: $currentstring = $token->[4];
3263: }
3264: return $currentstring;
3265: }
3266:
3267: sub end_area {
3268: my ($target,$token) = @_;
3269: my $currentstring = '';
3270: if ($target eq 'web' || $target eq 'webgrade') {
3271: $currentstring = $token->[2];
3272: }
3273: return $currentstring;
3274: }
3275:
3276: #-- <base> tag (end tag forbidden)
3277: sub start_base {
3278: my ($target,$token) = @_;
3279: my $currentstring = '';
3280: if ($target eq 'web' || $target eq 'webgrade') {
3281: $currentstring = $token->[4];
3282: }
3283: return $currentstring;
3284: }
3285:
3286: sub end_base {
3287: my ($target,$token) = @_;
3288: my $currentstring = '';
3289: if ($target eq 'web' || $target eq 'webgrade') {
3290: $currentstring = $token->[2];
3291: }
3292: return $currentstring;
3293: }
3294:
3295: #-- <bdo> tag (end tag required)
3296: sub start_bdo {
3297: my ($target,$token) = @_;
3298: my $currentstring = '';
3299: if ($target eq 'web' || $target eq 'webgrade') {
3300: $currentstring = $token->[4];
3301: }
3302: return $currentstring;
3303: }
3304:
3305: sub end_bdo {
3306: my ($target,$token) = @_;
3307: my $currentstring = '';
3308: if ($target eq 'web' || $target eq 'webgrade') {
3309: $currentstring = $token->[2];
3310: }
3311: return $currentstring;
3312: }
3313:
3314: #-- <bgsound> tag (end tag optional)
3315: sub start_bgsound {
3316: my ($target,$token) = @_;
3317: my $currentstring = '';
3318: if ($target eq 'web' || $target eq 'webgrade') {
3319: $currentstring = $token->[4];
3320: }
3321: return $currentstring;
3322: }
3323:
3324: sub end_bgsound {
3325: my ($target,$token) = @_;
3326: my $currentstring = '';
3327: if ($target eq 'web' || $target eq 'webgrade') {
3328: $currentstring = $token->[2];
3329: }
3330: return $currentstring;
3331: }
3332:
3333: #-- <blink> tag (end tag required)
3334: sub start_blink {
3335: my ($target,$token) = @_;
3336: my $currentstring = '';
3337: if ($target eq 'web' || $target eq 'webgrade') {
3338: $currentstring = $token->[4];
3339: }
3340: return $currentstring;
3341: }
3342:
3343: sub end_blink {
3344: my ($target,$token) = @_;
3345: my $currentstring = '';
3346: if ($target eq 'web' || $target eq 'webgrade') {
3347: $currentstring = $token->[2];
3348: }
3349: return $currentstring;
3350: }
3351:
3352: #-- <blockquote> tag (end tag required)
3353: sub start_blockquote {
3354: my ($target,$token) = @_;
3355: my $currentstring = &end_p(); # Close any unclosed <p>
3356: if ($target eq 'web' || $target eq 'webgrade') {
3357: $currentstring .= $token->[4];
3358: }
3359: return $currentstring;
3360: }
3361:
3362: sub end_blockquote {
3363: my ($target,$token) = @_;
3364: my $currentstring = '';
3365: if ($target eq 'web' || $target eq 'webgrade') {
3366: $currentstring = $token->[2];
3367: }
3368: return $currentstring;
3369: }
3370:
3371: #-- <button> tag (end tag required)
3372: sub start_button {
3373: my ($target,$token) = @_;
3374: my $currentstring = '';
3375: if ($target eq 'web' || $target eq 'webgrade') {
3376: $currentstring = $token->[4];
3377: }
3378: return $currentstring;
3379: }
3380:
3381: sub end_button {
3382: my ($target,$token) = @_;
3383: my $currentstring = '';
3384: if ($target eq 'web' || $target eq 'webgrade') {
3385: $currentstring = $token->[2];
3386: }
3387: return $currentstring;
3388: }
3389:
3390: #-- <caption> tag (end tag required)
3391: sub start_caption {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: $currentstring = $token->[4];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: sub end_caption {
3401: my ($target,$token) = @_;
3402: my $currentstring = '';
3403: if ($target eq 'web' || $target eq 'webgrade') {
3404: $currentstring = $token->[2];
3405: }
3406: return $currentstring;
3407: }
3408:
3409: #-- <col> tag (end tag forbdden)
3410: sub start_col {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring = $token->[4];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: sub end_col {
3420: my ($target,$token) = @_;
3421: my $currentstring = '';
3422: if ($target eq 'web' || $target eq 'webgrade') {
3423: $currentstring = $token->[2];
3424: }
3425: return $currentstring;
3426: }
3427:
3428: #-- <colgroup> tag (end tag optional)
3429: sub start_colgroup {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web' || $target eq 'webgrade') {
3433: $currentstring = $token->[4];
3434: }
3435: return $currentstring;
3436: }
3437:
3438: sub end_colgroup {
3439: my ($target,$token) = @_;
3440: my $currentstring = '';
3441: if ($target eq 'web' || $target eq 'webgrade') {
3442: $currentstring = $token->[2];
3443: }
3444: return $currentstring;
3445: }
3446:
3447: #-- <del> tag (end tag required)
3448: sub start_del {
3449: my ($target,$token) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web' || $target eq 'webgrade') {
3452: $currentstring = $token->[4];
3453: }
3454: return $currentstring;
3455: }
3456:
3457: sub end_del {
3458: my ($target,$token) = @_;
3459: my $currentstring = '';
3460: if ($target eq 'web' || $target eq 'webgrade') {
3461: $currentstring = $token->[2];
3462: }
3463: return $currentstring;
3464: }
3465:
3466: #-- <fieldset> tag (end tag required)
3467: sub start_fieldset {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web' || $target eq 'webgrade') {
3471: $currentstring = $token->[4];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: sub end_fieldset {
3477: my ($target,$token) = @_;
3478: my $currentstring = '';
3479: if ($target eq 'web' || $target eq 'webgrade') {
3480: $currentstring = $token->[2];
3481: }
3482: return $currentstring;
3483: }
3484:
3485: #-- <frame> tag (end tag forbidden)
3486: sub start_frame {
3487: my ($target,$token) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web' || $target eq 'webgrade') {
3490: $currentstring = $token->[4];
3491: }
3492: return $currentstring;
3493: }
3494:
3495: sub end_frame {
3496: my ($target,$token) = @_;
3497: my $currentstring = '';
3498: if ($target eq 'web' || $target eq 'webgrade') {
3499: $currentstring = $token->[2];
3500: }
3501: return $currentstring;
3502: }
3503:
3504: #-- <iframe> tag (end tag required)
3505: sub start_iframe {
3506: my ($target,$token) = @_;
3507: my $currentstring = '';
3508: if ($target eq 'web' || $target eq 'webgrade') {
3509: $currentstring = $token->[4];
3510: }
3511: return $currentstring;
3512: }
3513:
3514: sub end_iframe {
3515: my ($target,$token) = @_;
3516: my $currentstring = '';
3517: if ($target eq 'web' || $target eq 'webgrade') {
3518: $currentstring = $token->[2];
3519: }
3520: return $currentstring;
3521: }
3522:
3523: #-- <ins> tag (end tag required)
3524: sub start_ins {
3525: my ($target,$token) = @_;
3526: my $currentstring = '';
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring = $token->[4];
3529: }
3530: return $currentstring;
3531: }
3532:
3533: sub end_ins {
3534: my ($target,$token) = @_;
3535: my $currentstring = '';
3536: if ($target eq 'web' || $target eq 'webgrade') {
3537: $currentstring = $token->[2];
3538: }
3539: return $currentstring;
3540: }
3541:
3542: #-- <isindex> tag (end tag forbidden)
3543: sub start_isindex {
3544: my ($target,$token) = @_;
3545: my $currentstring = '';
3546: if ($target eq 'web' || $target eq 'webgrade') {
3547: $currentstring = $token->[4];
3548: }
3549: return $currentstring;
3550: }
3551:
3552: sub end_isindex {
3553: my ($target,$token) = @_;
3554: my $currentstring = '';
3555: if ($target eq 'web' || $target eq 'webgrade') {
3556: $currentstring = $token->[2];
3557: }
3558: return $currentstring;
3559: }
3560:
3561: #-- <keygen> tag (end tag forbidden)
3562: sub start_keygen {
3563: my ($target,$token) = @_;
3564: my $currentstring = '';
3565: if ($target eq 'web' || $target eq 'webgrade') {
3566: $currentstring = $token->[4];
3567: }
3568: return $currentstring;
3569: }
3570:
3571: sub end_keygen {
3572: my ($target,$token) = @_;
3573: my $currentstring = '';
3574: if ($target eq 'web' || $target eq 'webgrade') {
3575: $currentstring = $token->[2];
3576: }
3577: return $currentstring;
3578: }
3579:
3580: #-- <label> tag
3581: sub start_label {
3582: my ($target,$token) = @_;
3583: my $currentstring = '';
3584: if ($target eq 'web' || $target eq 'webgrade') {
3585: $currentstring = $token->[4];
3586: }
3587: return $currentstring;
3588: }
3589:
3590: sub end_label {
3591: my ($target,$token) = @_;
3592: my $currentstring = '';
3593: if ($target eq 'web' || $target eq 'webgrade') {
3594: $currentstring = $token->[2];
3595: }
3596: return $currentstring;
3597: }
3598:
3599: #-- <layer> tag (end tag required)
3600: sub start_layer {
3601: my ($target,$token) = @_;
3602: my $currentstring = '';
3603: if ($target eq 'web' || $target eq 'webgrade') {
3604: $currentstring = $token->[4];
3605: }
3606: return $currentstring;
3607: }
3608:
3609: sub end_layer {
3610: my ($target,$token) = @_;
3611: my $currentstring = '';
3612: if ($target eq 'web' || $target eq 'webgrade') {
3613: $currentstring = $token->[2];
3614: }
3615: return $currentstring;
3616: }
3617:
3618: #-- <legend> tag (end tag required)
3619: sub start_legend {
3620: my ($target,$token) = @_;
3621: my $currentstring = '';
3622: if ($target eq 'web' || $target eq 'webgrade') {
3623: $currentstring = $token->[4];
3624: }
3625: return $currentstring;
3626: }
3627:
3628: sub end_legend {
3629: my ($target,$token) = @_;
3630: my $currentstring = '';
3631: if ($target eq 'web' || $target eq 'webgrade') {
3632: $currentstring = $token->[2];
3633: }
3634: return $currentstring;
3635: }
3636:
3637: #-- <link> tag (end tag forbidden)
3638: sub start_link {
3639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3640: my $currentstring = '';
3641: if ($target eq 'web' || $target eq 'webgrade') {
3642: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3643: undef,1);
3644: &Apache::lonxml::extlink($href);
3645: $currentstring = $token->[4];
3646: }
3647: return $currentstring;
3648: }
3649:
3650: sub end_link {
3651: my ($target,$token) = @_;
3652: my $currentstring = '';
3653: if ($target eq 'web' || $target eq 'webgrade') {
3654: $currentstring = $token->[2];
3655: }
3656: return $currentstring;
3657: }
3658:
3659: #-- <marquee> tag (end tag optional)
3660: sub start_marquee {
3661: my ($target,$token) = @_;
3662: my $currentstring = '';
3663: if ($target eq 'web' || $target eq 'webgrade') {
3664: $currentstring = $token->[4];
3665: }
3666: return $currentstring;
3667: }
3668:
3669: sub end_marquee {
3670: my ($target,$token) = @_;
3671: my $currentstring = '';
3672: if ($target eq 'web' || $target eq 'webgrade') {
3673: $currentstring = $token->[2];
3674: }
3675: return $currentstring;
3676: }
3677:
3678: #-- <multicol> tag (end tag required)
3679: sub start_multicol {
3680: my ($target,$token) = @_;
3681: my $currentstring = &end_p(); # Close any pending <p>
3682: if ($target eq 'web' || $target eq 'webgrade') {
3683: $currentstring .= $token->[4];
3684: }
3685: return $currentstring;
3686: }
3687:
3688: sub end_multicol {
3689: my ($target,$token) = @_;
3690: my $currentstring = '';
3691: if ($target eq 'web' || $target eq 'webgrade') {
3692: $currentstring = $token->[2];
3693: }
3694: return $currentstring;
3695: }
3696:
3697: #-- <nobr> tag (end tag required)
3698: sub start_nobr {
3699: my ($target,$token) = @_;
3700: my $currentstring = '';
3701: if ($target eq 'web' || $target eq 'webgrade') {
3702: $currentstring = $token->[4];
3703: } elsif ($target eq 'tex') {
3704: $currentstring='\mbox{';
3705: }
3706: return $currentstring;
3707: }
3708:
3709: sub end_nobr {
3710: my ($target,$token) = @_;
3711: my $currentstring = '';
3712: if ($target eq 'web' || $target eq 'webgrade') {
3713: $currentstring = $token->[2];
3714: } elsif ($target eq 'tex') {
3715: $currentstring='}';
3716: }
3717: return $currentstring;
3718: }
3719:
3720: #-- <noembed> tag (end tag required)
3721: sub start_noembed {
3722: my ($target,$token) = @_;
3723: my $currentstring = '';
3724: if ($target eq 'web' || $target eq 'webgrade') {
3725: $currentstring = $token->[4];
3726: }
3727: return $currentstring;
3728: }
3729:
3730: sub end_noembed {
3731: my ($target,$token) = @_;
3732: my $currentstring = '';
3733: if ($target eq 'web' || $target eq 'webgrade') {
3734: $currentstring = $token->[2];
3735: }
3736: return $currentstring;
3737: }
3738:
3739: #-- <noframes> tag (end tag required)
3740: sub start_noframes {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web' || $target eq 'webgrade') {
3744: $currentstring = $token->[4];
3745: }
3746: return $currentstring;
3747: }
3748:
3749: sub end_noframes {
3750: my ($target,$token) = @_;
3751: my $currentstring = '';
3752: if ($target eq 'web' || $target eq 'webgrade') {
3753: $currentstring = $token->[2];
3754: }
3755: return $currentstring;
3756: }
3757:
3758: #-- <nolayer> tag (end tag required)
3759: sub start_nolayer {
3760: my ($target,$token) = @_;
3761: my $currentstring = '';
3762: if ($target eq 'web' || $target eq 'webgrade') {
3763: $currentstring = $token->[4];
3764: }
3765: return $currentstring;
3766: }
3767:
3768: sub end_nolayer {
3769: my ($target,$token) = @_;
3770: my $currentstring = '';
3771: if ($target eq 'web' || $target eq 'webgrade') {
3772: $currentstring = $token->[2];
3773: }
3774: return $currentstring;
3775: }
3776:
3777: #-- <noscript> tag (end tag required)
3778: sub start_noscript {
3779: my ($target,$token) = @_;
3780: my $currentstring = '';
3781: if ($target eq 'web' || $target eq 'webgrade') {
3782: $currentstring = $token->[4];
3783: }
3784: return $currentstring;
3785: }
3786:
3787: sub end_noscript {
3788: my ($target,$token) = @_;
3789: my $currentstring = '';
3790: if ($target eq 'web' || $target eq 'webgrade') {
3791: $currentstring = $token->[2];
3792: }
3793: return $currentstring;
3794: }
3795:
3796: #-- <object> tag (end tag required)
3797: sub start_object {
3798: my ($target,$token) = @_;
3799: my $currentstring = '';
3800: if ($target eq 'web' || $target eq 'webgrade') {
3801: $currentstring = $token->[4];
3802: }
3803: return $currentstring;
3804: }
3805:
3806: sub end_object {
3807: my ($target,$token) = @_;
3808: my $currentstring = '';
3809: if ($target eq 'web' || $target eq 'webgrade') {
3810: $currentstring = $token->[2];
3811: }
3812: return $currentstring;
3813: }
3814:
3815: #-- <optgroup> tag (end tag required)
3816: sub start_optgroup {
3817: my ($target,$token) = @_;
3818: my $currentstring = '';
3819: if ($target eq 'web' || $target eq 'webgrade') {
3820: $currentstring = $token->[4];
3821: }
3822: return $currentstring;
3823: }
3824:
3825: sub end_optgroup {
3826: my ($target,$token) = @_;
3827: my $currentstring = '';
3828: if ($target eq 'web' || $target eq 'webgrade') {
3829: $currentstring = $token->[2];
3830: }
3831: return $currentstring;
3832: }
3833:
3834: #-- <samp> tag (end tag required)
3835: sub start_samp {
3836: my ($target,$token) = @_;
3837: my $currentstring = '';
3838: if ($target eq 'web' || $target eq 'webgrade') {
3839: $currentstring = $token->[4];
3840: } elsif ($target eq 'tex') {
3841: $currentstring='\texttt{';
3842: }
3843: return $currentstring;
3844: }
3845:
3846: sub end_samp {
3847: my ($target,$token) = @_;
3848: my $currentstring = '';
3849: if ($target eq 'web' || $target eq 'webgrade') {
3850: $currentstring = $token->[2];
3851: } elsif ($target eq 'tex') {
3852: $currentstring='}';
3853: }
3854: return $currentstring;
3855: }
3856:
3857: #-- <server> tag
3858: sub start_server {
3859: my ($target,$token) = @_;
3860: my $currentstring = '';
3861: if ($target eq 'web' || $target eq 'webgrade') {
3862: $currentstring = $token->[4];
3863: }
3864: return $currentstring;
3865: }
3866:
3867: sub end_server {
3868: my ($target,$token) = @_;
3869: my $currentstring = '';
3870: if ($target eq 'web' || $target eq 'webgrade') {
3871: $currentstring = $token->[2];
3872: }
3873: return $currentstring;
3874: }
3875:
3876: #-- <spacer> tag (end tag forbidden)
3877: sub start_spacer {
3878: my ($target,$token) = @_;
3879: my $currentstring = &end_p(); # Close off any open <p> tag.
3880: if ($target eq 'web' || $target eq 'webgrade') {
3881: $currentstring .= $token->[4];
3882: }
3883: return $currentstring;
3884: }
3885:
3886: sub end_spacer {
3887: my ($target,$token) = @_;
3888: my $currentstring = '';
3889: if ($target eq 'web' || $target eq 'webgrade') {
3890: $currentstring = $token->[2];
3891: }
3892: return $currentstring;
3893: }
3894:
3895: #-- <span> tag (end tag required)
3896: sub start_span {
3897: my ($target,$token) = @_;
3898: my $currentstring = '';
3899: if ($target eq 'web' || $target eq 'webgrade') {
3900: $currentstring = $token->[4];
3901: }
3902: return $currentstring;
3903: }
3904:
3905: sub end_span {
3906: my ($target,$token) = @_;
3907: my $currentstring = '';
3908: if ($target eq 'web' || $target eq 'webgrade') {
3909: $currentstring = $token->[2];
3910: }
3911: return $currentstring;
3912: }
3913:
3914: #-- <tbody> tag (end tag optional)
3915: sub start_tbody {
3916: my ($target,$token) = @_;
3917: my $currentstring = '';
3918: if ($target eq 'web' || $target eq 'webgrade') {
3919: $currentstring = $token->[4];
3920: }
3921: return $currentstring;
3922: }
3923:
3924: sub end_tbody {
3925: my ($target,$token) = @_;
3926: my $currentstring = '';
3927: if ($target eq 'web' || $target eq 'webgrade') {
3928: $currentstring = $token->[2];
3929: }
3930: return $currentstring;
3931: }
3932:
3933: #-- <tfoot> tag (end tag optional)
3934: sub start_tfoot {
3935: my ($target,$token) = @_;
3936: my $currentstring = '';
3937: if ($target eq 'web' || $target eq 'webgrade') {
3938: $currentstring = $token->[4];
3939: }
3940: return $currentstring;
3941: }
3942:
3943: sub end_tfoot {
3944: my ($target,$token) = @_;
3945: my $currentstring = '';
3946: if ($target eq 'web' || $target eq 'webgrade') {
3947: $currentstring = $token->[2];
3948: }
3949: return $currentstring;
3950: }
3951:
3952: #-- <thead> tag (end tag optional)
3953: sub start_thead {
3954: my ($target,$token) = @_;
3955: my $currentstring = '';
3956: if ($target eq 'web' || $target eq 'webgrade') {
3957: $currentstring = $token->[4];
3958: }
3959: return $currentstring;
3960: }
3961:
3962: sub end_thead {
3963: my ($target,$token) = @_;
3964: my $currentstring = '';
3965: if ($target eq 'web' || $target eq 'webgrade') {
3966: $currentstring = $token->[2];
3967: }
3968: return $currentstring;
3969: }
3970:
3971: #-- <var> tag
3972: sub start_var {
3973: my ($target,$token) = @_;
3974: my $currentstring = '';
3975: if ($target eq 'web' || $target eq 'webgrade') {
3976: $currentstring = $token->[4];
3977: } elsif ($target eq 'tex') {
3978: $currentstring = '\textit{';
3979: }
3980: return $currentstring;
3981: }
3982:
3983: sub end_var {
3984: my ($target,$token) = @_;
3985: my $currentstring = '';
3986: if ($target eq 'web' || $target eq 'webgrade') {
3987: $currentstring = $token->[2];
3988: } elsif ($target eq 'tex') {
3989: $currentstring = '}';
3990: }
3991: return $currentstring;
3992: }
3993:
3994: #-- <wbr> tag (end tag forbidden)
3995: sub start_wbr {
3996: my ($target,$token) = @_;
3997: my $currentstring = '';
3998: if ($target eq 'web' || $target eq 'webgrade') {
3999: $currentstring = $token->[4];
4000: }
4001: return $currentstring;
4002: }
4003:
4004: sub end_wbr {
4005: my ($target,$token) = @_;
4006: my $currentstring = '';
4007: if ($target eq 'web' || $target eq 'webgrade') {
4008: $currentstring = $token->[2];
4009: }
4010: return $currentstring;
4011: }
4012:
4013: #-- <hideweboutput> tag
4014: sub start_hideweboutput {
4015: my ($target,$token) = @_;
4016: if ($target eq 'web' || $target eq 'webgrade') {
4017: &Apache::lonxml::startredirection();
4018: }
4019: return '';
4020: }
4021:
4022: sub end_hideweboutput {
4023: my ($target,$token) = @_;
4024: my $currentstring = '';
4025: if ($target eq 'web' || $target eq 'webgrade') {
4026: $currentstring = &Apache::lonxml::endredirection();
4027: }
4028: return '';
4029: }
4030:
4031:
4032: sub image_replication {
4033: my $src = shift;
4034: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4035: #replicates eps or ps
4036: my $epssrc = my $pssrc = $src;
4037: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4038: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4039: if (not -e $epssrc && not -e $pssrc) {
4040: my $result=&Apache::lonnet::repcopy($epssrc);
4041: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4042: }
4043: return '';
4044: }
4045: #
4046: # Get correct sizing parameter for an image given
4047: # it's initial ht. and wid. This allows sizing of
4048: # images that are generated on-the-fly (e.g. gnuplot)
4049: # as well as serving as a utility for image_size.
4050: #
4051: # Parameter:
4052: # height_param
4053: # width_param - Initial picture dimensions.
4054: # scaling - A scale factor.
4055: # parstack, - the current stack of tag attributes
4056: # from the xml parser
4057: # safeeval, - pointer to the safespace
4058: # depth, - from what level in the stack to look for attributes
4059: # (assumes -1 if unspecified)
4060: # cis - look for attrubutes case insensitively
4061: # (assumes false)
4062: #
4063: # Returns:
4064: # height, width - new dimensions.
4065: #
4066: sub resize_image {
4067: my ($height_param, $width_param, $scaling,
4068: $parstack, $safeeval, $depth, $cis) = @_;
4069:
4070: # First apply the scaling...
4071:
4072: $height_param = $height_param * $scaling;
4073: $width_param = $width_param * $scaling;
4074:
4075: #do we have any specified LaTeX size of the picture?
4076: my $toget='TeXwidth';
4077: if ($cis) {
4078: $toget=lc($toget);
4079: }
4080: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4081: $safeeval,$depth,$cis);
4082: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4083: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4084: $safeeval,$depth,$cis);
4085: #do we have any specified web size of the picture?
4086: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4087: $depth,1);
4088: if ($TeXwidth) {
4089: my $old_width_param=$width_param;
4090: if ($TeXwidth=~/(\d+)\s*\%/) {
4091: $width_param = $1*$env{'form.textwidth'}/100;
4092: } else {
4093: $width_param = $TeXwidth;
4094: }
4095: if ($TeXheight) {
4096: $height_param = $TeXheight;
4097: } elsif ($old_width_param) {
4098: $height_param=$TeXwidth/$old_width_param*$height_param;
4099: }
4100: } elsif ($TeXheight) {
4101: $height_param = $TeXheight;
4102: if ($height_param) {
4103: $width_param = $TeXheight/$height_param*$width_param;
4104: }
4105: } elsif ($width) {
4106: my $old_width_param=$width_param;
4107: $width_param = $width*$scaling;
4108: if ($old_width_param) {
4109: $height_param=$width_param/$old_width_param*$height_param;
4110: }
4111: }
4112: if ($width_param > $env{'form.textwidth'}) {
4113: my $old_width_param=$width_param;
4114: $width_param =0.95*$env{'form.textwidth'};
4115: if ($old_width_param) {
4116: $height_param=$width_param/$old_width_param*$height_param;
4117: }
4118: }
4119:
4120: return ($height_param, $width_param);
4121: }
4122:
4123: sub image_size {
4124: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4125:
4126: #size of image from gif/jpg/jpeg/png
4127: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4128: if (-e $ressrc) {
4129: $src = $ressrc;
4130: }
4131: my $image = Image::Magick->new;
4132: my $current_figure = $image->Read($src);
4133: my $width_param = $image->Get('width');
4134: my $height_param = $image->Get('height');
4135: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4136: undef($image);
4137:
4138: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4139: $scaling, $parstack, $safeeval,
4140: $depth, $cis);
4141:
4142: return ($height_param, $width_param);
4143: }
4144:
4145: sub image_width {
4146: my ($height, $width) = &image_size(@_);
4147: return $width;
4148: }
4149: # Not yet 100% sure this is correct in all circumstances..
4150: # due to my uncertainty about mods to image_size.
4151: #
4152: sub image_height {
4153: my ($height, $width) = &image_size(@_);
4154: return $height;
4155: }
4156:
4157: sub get_eps_image {
4158: my ($src)=@_;
4159: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4160:
4161: # In order to prevent the substitution of the alt text, we need to
4162: # be sure the orig_src file is on system now so:
4163:
4164: if (! -e $orig_src) {
4165: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4166: }
4167: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4168: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4169: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4170: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4171: &Apache::lonxml::debug("Filelocation gives: $src");
4172: if (! -e $src) {
4173: &Apache::lonxml::debug("$src does not exist");
4174: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4175: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4176: #if replication failed try to find ps file
4177: $src=~s/\.eps$/\.ps/;
4178: &Apache::lonxml::debug("Now looking for $src");
4179: #if no ps file try to replicate it.
4180: my $didrepcopy = &Apache::lonnet::repcopy($src);
4181: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4182: if ( (not -e $src) ||
4183: ($didrepcopy ne 'ok')) {
4184: &Apache::lonxml::debug("Failed to find or replicate $src");
4185:
4186: #if replication failed try to produce eps file dynamically
4187: $src=~s/\.ps$/\.eps/;
4188: my $temp_file;
4189: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4190: my $newsrc=$orig_src;
4191: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4192: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4193: print FILE "$newsrc\n";
4194: close FILE;
4195: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4196: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4197: if ($sext ne "") { # Put the ext. back in to uniquify.
4198: $src =~ s/\.eps$/$sext.eps/;
4199: }
4200: }
4201: }
4202: }
4203: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4204: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4205: return ($path.'/',$file);
4206: }
4207:
4208: sub eps_generation {
4209: my ($src,$file,$width_param) = @_;
4210: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4211: my $temp_file = Apache::File->new('>>'.$filename);
4212: print $temp_file "$src\n";
4213: my $newsrc = $src;
4214: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4215: $newsrc=~s/\/home\/httpd\/html\/res//;
4216: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4217: $newsrc=~s/\/\.\//\//;
4218: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4219: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4220: $newsrc=~s/\/home\/httpd\/lonUsers//;
4221: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4222: }
4223: if ($newsrc=~/\/userfiles\//) {
4224: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4225: } else {
4226: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4227: }
4228: }
4229:
4230: sub file_path {
4231: my $src=shift;
4232: my ($file,$path);
4233: if ($src =~ m!(.*)/([^/]*)$!) {
4234: $file = $2;
4235: $path = $1.'/';
4236: }
4237: return $file,$path;
4238: }
4239: # Converts a measurement in to mm from any of
4240: # the other valid LaTeX units of measure.
4241: # If the units of measure are missing from the
4242: # parameter, it is assumed to be in and returned
4243: # with mm units of measure
4244: sub recalc {
4245: my $argument = shift;
4246: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4247: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4248: my $value=$1;
4249: my $units=$2;
4250: if ($units eq 'cm') {
4251: $value*=10;
4252: } elsif ($units eq 'in') {
4253: $value*=25.4;
4254: } elsif ($units eq 'pc') {
4255: $value*=(25.4*12/72.27);
4256: } elsif ($units eq 'pt') {
4257: $value*=(25.4/72.27);
4258: }
4259: return $value.' mm';
4260: }
4261:
4262: sub LATEX_length {
4263: my $garbage=shift;
4264: $garbage=~s/^\s+$//;
4265: $garbage=~s/^\s+(\S.*)/$1/;#space before
4266: $garbage=~s/(.*\S)\s+$/$1/;#space after
4267: $garbage=~s/(\s)+/$1/;#only one space
4268: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4269: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4270: $garbage=~s/([^\\])\$/$1/g;#$
4271: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4272: $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;
4273: $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;
4274: $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;
4275: $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;
4276: $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;
4277: $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;
4278: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4279: #remove some other LaTeX command
4280: $garbage=~s|\\(\w+)\\|\\|g;
4281: $garbage=~s|\\(\w+)(\s*)|$2|g;
4282: $garbage=~s|\+|11|g;
4283: my $value=length($garbage);
4284: return $value;
4285: }
4286:
4287:
4288: # is_inside_of $tagstack $tag
4289: # This sub returns true if the current state of Xml processing
4290: # is inside of the tag.
4291: # Parameters:
4292: # tagstack - The tagstack from the parser.
4293: # tag - The tag (without the <>'s.).
4294: # Sample usage:
4295: # if (is_inside_of($tagstack "table")) {
4296: # # I'm in a table....
4297: # }
4298: sub is_inside_of {
4299: my ($tagstack, $tag) = @_;
4300: my @stack = @$tagstack;
4301: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4302: if ($stack[$i] eq $tag) {
4303: return 1;
4304: }
4305: }
4306: return 0;
4307: }
4308:
4309:
4310: 1;
4311: __END__
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