File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.334:
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Thu Aug 31 18:45:42 2006 UTC (17 years, 9 months ago) by
albertel
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MAIN
CVS tags:
HEAD
- latex goes into an infite loop when one does:
\begin{tabular}{c}
\multicolumn{1}{|l|}{\vskip 0 mm B \vskip 0 mm}\\
\end{tabular}
as a workaround, <br /> will have no effect when inside of a <td colspan="..">
1: # The LearningOnline Network with CAPA
2: # Tags Default Definition Module
3: #
4: # $Id: londefdef.pm,v 1.334 2006/08/31 18:45:42 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: $currentstring .=
187: '\documentclass[letterpaper,twoside]{article}\raggedbottom';
188: if (($env{'form.latex_type'}=~'batchmode') ||
189: (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
190: $currentstring .= '\newcommand{\keephidden}[1]{}'.
191: '\renewcommand{\deg}{$^{\circ}$}'.
192: '\usepackage{multirow}'.
193: '\usepackage{longtable}'.
194: '\usepackage{textcomp}'.
195: '\usepackage{makeidx}'.
196: '\usepackage[dvips]{graphicx}'.
197: '\usepackage{wrapfig}'.
198: '\usepackage{picins}'.
199: '\usepackage{epsfig}'.
200: '\usepackage{calc}'.
201: '\usepackage{amsmath}'.
202: '\usepackage{amssymb}'.
203: '\usepackage{amsfonts}'.
204: '\usepackage{amsthm}'.
205: '\usepackage{amscd}'.
206: '\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}}'.
207: '\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}}';
208: }
209: return $currentstring;
210: }
211:
212: sub end_html {
213: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
214: my $currentstring = '';
215: if ($target eq 'web' || $target eq 'webgrade') {
216: # end_body takes care of the </html>
217: }
218: return $currentstring;
219: }
220:
221: #-- <head> tag (end tag optional)
222: sub start_head {
223: my ($target,$token) = @_;
224: my $currentstring = '';
225: if ($target eq 'web' || $target eq 'webgrade') {
226: &Apache::lonxml::startredirection();
227: }
228: return $currentstring;
229: }
230:
231: sub end_head {
232: my ($target,$token) = @_;
233: my $currentstring = '';
234: if (($target eq 'web' && $env{'request.state'} eq 'published') ||
235: ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
236: # in case there is a </head> but no <head>
237: if ($Apache::lonxml::redirection) {
238: $Apache::londefdef::head = &Apache::lonxml::endredirection();
239: }
240: }
241: return $currentstring;
242: }
243:
244: #-- <map> tag (end tag required)
245: sub start_map {
246: my ($target,$token) = @_;
247: my $currentstring = '';
248: if ($target eq 'web' || $target eq 'webgrade') {
249: $currentstring = $token->[4];
250: }
251: return $currentstring;
252: }
253:
254: sub end_map {
255: my ($target,$token) = @_;
256: my $currentstring = '';
257: if ($target eq 'web' || $target eq 'webgrade') {
258: $currentstring = $token->[2];
259: }
260: return $currentstring;
261: }
262:
263: #-- <select> tag (end tag required)
264: sub start_select {
265: my ($target,$token) = @_;
266: my $currentstring = '';
267: if ($target eq 'web' || $target eq 'webgrade') {
268: $currentstring = $token->[4];
269: } elsif ($target eq 'tex') {
270: $Apache::londefdef::select=0;
271: }
272: return $currentstring;
273: }
274:
275: sub end_select {
276: my ($target,$token) = @_;
277: my $currentstring = '';
278: if ($target eq 'web' || $target eq 'webgrade') {
279: $currentstring = $token->[2];
280: }
281: return $currentstring;
282: }
283:
284: #-- <option> tag (end tag optional)
285: sub start_option {
286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
287: my $currentstring = '';
288: if ($target eq 'web' || $target eq 'webgrade') {
289: $currentstring = $token->[4];
290: } elsif ($target eq 'tex') {
291: $Apache::londefdef::select++;
292: if ($Apache::londefdef::select == 1) {
293: $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
294: } else {
295: $currentstring='\keephidden{';
296: }
297: }
298: return $currentstring;
299: }
300:
301: sub end_option {
302: my ($target,$token) = @_;
303: my $currentstring = '';
304: if ($target eq 'web' || $target eq 'webgrade') {
305: $currentstring = $token->[2];
306: } elsif ($target eq 'tex') {
307: $currentstring='}';
308: }
309: return $currentstring;
310: }
311:
312: #-- <input> tag (end tag forbidden)
313: sub start_input {
314: my ($target,$token) = @_;
315: my $currentstring = '';
316: if ($target eq 'web' || $target eq 'webgrade') {
317: $currentstring = $token->[4];
318: }
319: return $currentstring;
320: }
321:
322: sub end_input {
323: my ($target,$token) = @_;
324: my $currentstring = '';
325: if ($target eq 'web' || $target eq 'webgrade') {
326: $currentstring = $token->[2];
327: }
328: return $currentstring;
329: }
330:
331: #-- <textarea> tag (end tag required)
332: sub start_textarea {
333: my ($target,$token) = @_;
334: my $currentstring = '';
335: if ($target eq 'web' || $target eq 'webgrade') {
336: $currentstring = $token->[4];
337: }
338: return $currentstring;
339: }
340:
341: sub end_textarea {
342: my ($target,$token) = @_;
343: my $currentstring = '';
344: if ($target eq 'web' || $target eq 'webgrade') {
345: $currentstring = $token->[2];
346: }
347: return $currentstring;
348: }
349:
350: #-- <form> tag (end tag required)
351: sub start_form {
352: my ($target,$token) = @_;
353: my $currentstring = '';
354: if ($target eq 'web' || $target eq 'webgrade') {
355: $currentstring = $token->[4];
356: }
357: return $currentstring;
358: }
359:
360: sub end_form {
361: my ($target,$token) = @_;
362: my $currentstring = '';
363: if ($target eq 'web' || $target eq 'webgrade') {
364: $currentstring = $token->[2];
365: }
366: return $currentstring;
367: }
368:
369: #-- <title> tag (end tag required)
370: sub start_title {
371: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
372: my $currentstring = '';
373: if ($target eq 'web' || $target eq 'webgrade') {
374: $Apache::londefdef::title =
375: &Apache::lonxml::get_all_text('/title',$parser,$style);
376: } elsif ($target eq 'tex') {
377: $currentstring .= '\keephidden{Title of the document: '
378: }
379: if ($target eq 'meta') {
380: $currentstring='<title>';
381: &start_output($target);
382: }
383: return $currentstring;
384: }
385:
386: sub end_title {
387: my ($target,$token) = @_;
388: my $currentstring = '';
389: if ($target eq 'web' || $target eq 'webgrade') {
390: # start_title takes care of swallowing the title
391: } elsif ($target eq 'tex') {
392: $currentstring .= '}';
393: }
394: if ($target eq 'meta') {
395: &end_output($target);
396: $currentstring='</title>';
397: }
398: return $currentstring;
399: }
400:
401: #-- <meta> tag (end tag forbidden)
402: sub start_meta {
403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
404: my $currentstring = '';
405: if ($target eq 'web' || $target eq 'webgrade') {
406: my $args='';
407: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
408: if ($args eq '') {
409: &Apache::lonxml::get_all_text("/meta",$parser,$style);
410: } else {
411: $currentstring = $token->[4];
412: }
413: } elsif ($target eq 'meta') {
414: unless (&Apache::lonxml::get_param
415: ('http-equiv',$parstack,$safeeval,undef,1)) {
416: my $name=$token->[2]->{'name'};
417: $name=~tr/A-Z/a-z/;
418: $name=~s/\s/\_/gs;
419: $name=~s/\W//gs;
420: if ($name) {
421: $currentstring='<'.$name;
422: my $display=&Apache::lonxml::get_param
423: ('display',$parstack,$safeeval,undef,1);
424: if ($display) {
425: $display=~s/\"/\'/g;
426: $currentstring.=' display="'.$display.'"';
427: }
428: $currentstring.='>'.
429: &Apache::lonxml::get_param
430: ('content',$parstack,$safeeval,undef,1).
431: '</'.$name.'>';
432: }
433: my $display=&Apache::lonxml::get_param
434: ('display',$parstack,$safeeval,undef,1);
435: if ($display) {
436: $display=&HTML::Entities::encode($display,'<>&"');
437: $currentstring.='<'.$name.'.display>'.$display.
438: '</'.$name.'.display>';
439: }
440: }
441: } elsif ($target eq 'tex') {
442: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
443: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
444: if ((not defined $content) && (not defined $name)) {
445: &Apache::lonxml::startredirection();
446: }
447: }
448: return $currentstring;
449: }
450:
451: sub end_meta {
452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
453: my $currentstring = '';
454: if ($target eq 'web' || $target eq 'webgrade') {
455: my $args='';
456: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
457: if ($args ne '') {
458: $currentstring = $token->[4];
459: }
460: } elsif ($target eq 'tex') {
461: my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
462: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
463: if ((not defined $content) && (not defined $name)) {
464: &Apache::lonxml::endredirection();
465: }
466: }
467: return $currentstring;
468: }
469:
470: # accessrule
471: sub start_accessrule {
472: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
473: my $currentstring = '';
474: my $eff=&Apache::lonxml::get_param
475: ('effect',$parstack,$safeeval,undef,1);
476: my $realm=&Apache::lonxml::get_param
477: ('realm',$parstack,$safeeval,undef,1);
478: my $role=&Apache::lonxml::get_param
479: ('role',$parstack,$safeeval,undef,1);
480: $realm=~s/\s+//g;
481: $realm=~s/\//\_/g;
482: $realm=~s/^\_//;
483: $realm=~s/\W/\;/g;
484: $role=~s/\s+//g;
485: $role=~s/\//\_/g;
486: $role=~s/\W/\;/g;
487: if ($target eq 'web') {
488: my $args='';
489: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
490: if ($args eq '') {
491: &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
492: } else {
493: $currentstring = $token->[4];
494: }
495: }
496: if ($target eq 'meta') {
497: $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
498: }
499: return $currentstring;
500: }
501:
502: sub end_accessrule {
503: my ($target,$token,$tagstack,$parstack,$parser) = @_;
504: my $currentstring = '';
505: if ($target eq 'web') {
506: my $args='';
507: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
508: if ($args ne '') {
509: $currentstring = $token->[4];
510: }
511: }
512: return $currentstring;
513: }
514:
515: #-- <body> tag (end tag required)
516: sub start_body {
517: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
518: my $currentstring = '';
519:
520: if ($target eq 'web' || $target eq 'webgrade') {
521: if ($Apache::lonhomework::parsing_a_problem) {
522: &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
523: return '';
524: }
525:
526: if (&is_inside_of($tagstack, "head")) {
527: &end_head(@_);
528: }
529: $currentstring =
530: &Apache::loncommon::start_page($Apache::londefdef::title,
531: $Apache::londefdef::head,
532: {'add_entries' => $token->[2],
533: 'no_title' => 1,
534: 'force_register' => 1});
535:
536: if ($env{'request.state'} ne 'published') {
537: $currentstring.=&Apache::lonmenu::constspaceform();
538: $currentstring.=(<<EDITBUTTON);
539: <form method="post">
540: <input type="submit" name="editmode" accesskey="e" value="Edit" />
541: </form>
542: <br />
543: EDITBUTTON
544: }
545: $currentstring.=&Apache::lonxml::message_location();
546: } elsif ($target eq 'tex') {
547: $currentstring = '\begin{document}';
548: }
549: return $currentstring;
550: }
551:
552: sub end_body {
553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
554: my $currentstring = &end_p(); # Close off unclosed <p>
555: if ($target eq 'web' || $target eq 'webgrade') {
556: $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
557: } elsif ($target eq 'tex') {
558: $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
559: }
560: return $currentstring;
561: }
562:
563: # \begin{center} causes a new paragprah spacing that looks odd inside
564: # of a table cell
565: sub center_correction { return '\vspace*{-6 mm}'; }
566: #-- <center> tag (end tag required)
567: sub start_center {
568: my ($target,$token,$tagstack) = @_;
569: my $currentstring = &end_p(); # Close off any prior para.
570: if ($target eq 'web' || $target eq 'webgrade') {
571: $currentstring .= $token->[4];
572: } elsif ($target eq 'tex') {
573: if (&is_inside_of($tagstack, "table")) {
574: $currentstring .= ¢er_correction();
575: }
576: $currentstring .= '\begin{center}';
577: }
578: return $currentstring;
579: }
580:
581: sub end_center {
582: my ($target,$token,$tagstack) = @_;
583: my $currentstring = '';
584: if ($target eq 'web' || $target eq 'webgrade') {
585: $currentstring = $token->[2];
586: } elsif ($target eq 'tex') {
587: $currentstring = '\end{center}';
588: }
589: return $currentstring;
590: }
591:
592: #-- <b> tag (end tag required)
593: # NOTE: In TeX mode disables internal <p>
594: sub start_b {
595: my ($target,$token) = @_;
596: my $currentstring = '';
597: if ($target eq 'web' || $target eq 'webgrade') {
598: $currentstring = $token->[4];
599: } elsif ($target eq 'tex') {
600: &disable_para();
601: $currentstring .= '\textbf{';
602: }
603: return $currentstring;
604: }
605:
606: sub end_b {
607: my ($target,$token) = @_;
608: my $currentstring = '';
609: if ($target eq 'web' || $target eq 'webgrade') {
610: $currentstring = $token->[2];
611: } elsif ($target eq 'tex') {
612: &enable_para();
613: $currentstring = '}';
614: }
615: return $currentstring;
616: }
617:
618: #-- <strong> tag (end tag required)
619: # NOTE: in TeX mode disables internal <p>
620: sub start_strong {
621: my ($target,$token) = @_;
622: my $currentstring = '';
623: if ($target eq 'web' || $target eq 'webgrade') {
624: $currentstring = $token->[4];
625: } elsif ($target eq 'tex') {
626: &disable_para();
627: $currentstring = '\textbf{';
628: }
629: return $currentstring;
630: }
631:
632: sub end_strong {
633: my ($target,$token) = @_;
634: my $currentstring = '';
635: if ($target eq 'web' || $target eq 'webgrade') {
636: $currentstring = $token->[2];
637: } elsif ($target eq 'tex') {
638: &enable_para();
639: $currentstring = '}';
640: }
641: return $currentstring;
642: }
643:
644: #-- <h1> tag (end tag required)
645: sub start_h1 {
646: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
647: my $currentstring = &end_p(); # Close off any prior para.
648: if ($target eq 'web' || $target eq 'webgrade') {
649: $currentstring .= $token->[4];
650: } elsif ($target eq 'tex') {
651: my $pre;
652: my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
653: if ($align eq 'center') {
654: $pre='\begin{center}';
655: } elsif ($align eq 'left') {
656: $pre='\rlap{';
657: } elsif ($align eq 'right') {
658: $pre=' \hfill \llap{';
659: }
660: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
661: if (not defined $TeXsize) {$TeXsize="large";}
662: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
663: } elsif ($target eq 'meta') {
664: $currentstring.='<subject>';
665: &start_output($target);
666: }
667: return $currentstring;
668: }
669:
670: sub end_h1 {
671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
672: my $currentstring = '';
673: if ($target eq 'web' || $target eq 'webgrade') {
674: $currentstring .= $token->[2];
675: } elsif ($target eq 'tex') {
676: my $post='\vskip 0 mm ';
677: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
678: if ($align eq 'center') {
679: $post='\end{center}';
680: } elsif ($align eq 'left') {
681: $post='} \hfill'.'\vskip 0 mm ';
682: } elsif ($align eq 'right') {
683: $post='}'.'\vskip 0 mm ';
684: }
685: $currentstring .= '}}'.$post;
686: } elsif ($target eq 'meta') {
687: &end_output($target);
688: $currentstring='</subject>';
689: }
690: return $currentstring;
691: }
692:
693: #-- <h2> tag
694: sub start_h2 {
695: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
696: my $currentstring = &end_p(); # Close off any prior para.
697: if ($target eq 'web' || $target eq 'webgrade') {
698: $currentstring .= $token->[4];
699: } elsif ($target eq 'tex') {
700: my $pre;
701: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
702: if ($align eq 'center') {
703: $pre='\begin{center}';
704: } elsif ($align eq 'left') {
705: $pre='\rlap{';
706: } elsif ($align eq 'right') {
707: $pre=' \hfill \llap{';
708: }
709: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
710: if (not defined $TeXsize) {$TeXsize="large";}
711: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
712: }
713: return $currentstring;
714: }
715:
716: sub end_h2 {
717: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
718: my $currentstring = '';
719: if ($target eq 'web' || $target eq 'webgrade') {
720: $currentstring .= $token->[2];
721: } elsif ($target eq 'tex') {
722: my $post='\vskip 0 mm ';
723: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
724: if ($align eq 'center') {
725: $post='\end{center}';
726: } elsif ($align eq 'left') {
727: $post='} \hfill'.'\vskip 0 mm ';
728: } elsif ($align eq 'right') {
729: $post='}'.'\vskip 0 mm ';
730: }
731: $currentstring .= '}}'.$post;
732: }
733: return $currentstring;
734: }
735:
736: #-- <h3> tag
737: sub start_h3 {
738: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
739: my $currentstring = &end_p(); # Close off any prior para.
740: if ($target eq 'web' || $target eq 'webgrade') {
741: $currentstring .= $token->[4];
742: } elsif ($target eq 'tex') {
743: my $pre;
744: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
745: if ($align eq 'center') {
746: $pre='\begin{center}';
747: } elsif ($align eq 'left') {
748: $pre='\rlap{';
749: } elsif ($align eq 'right') {
750: $pre=' \hfill \llap{';
751: }
752: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
753: if (not defined $TeXsize) {$TeXsize="large";}
754: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
755: }
756: return $currentstring;
757: }
758:
759: sub end_h3 {
760: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
761: my $currentstring = '';
762: if ($target eq 'web' || $target eq 'webgrade') {
763: $currentstring .= $token->[2];
764: } elsif ($target eq 'tex') {
765: my $post='\vskip 0 mm ';
766: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
767: if ($align eq 'center') {
768: $post='\end{center}';
769: } elsif ($align eq 'left') {
770: $post='} \hfill'.'\vskip 0 mm ';
771: } elsif ($align eq 'right') {
772: $post='}'.'\vskip 0 mm ';
773: }
774: $currentstring .= '}}'.$post;
775: }
776: return $currentstring;
777: }
778:
779: #-- <h4> tag
780: sub start_h4 {
781: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
782: my $currentstring = &end_p(); # Close off any prior para.
783: if ($target eq 'web' || $target eq 'webgrade') {
784: $currentstring .= $token->[4];
785: } elsif ($target eq 'tex') {
786: my $pre;
787: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
788: if ($align eq 'center') {
789: $pre='\begin{center}';
790: } elsif ($align eq 'left') {
791: $pre='\rlap{';
792: } elsif ($align eq 'right') {
793: $pre=' \hfill \llap{';
794: }
795: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
796: if (not defined $TeXsize) {$TeXsize="large";}
797: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
798: }
799: return $currentstring;
800: }
801:
802: sub end_h4 {
803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
804: my $currentstring = '';
805: if ($target eq 'web' || $target eq 'webgrade') {
806: $currentstring .= $token->[2];
807: } elsif ($target eq 'tex') {
808: my $post='\vskip 0 mm ';
809: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
810: if ($align eq 'center') {
811: $post='\end{center}';
812: } elsif ($align eq 'left') {
813: $post='} \hfill'.'\vskip 0 mm ';
814: } elsif ($align eq 'right') {
815: $post='}'.'\vskip 0 mm ';
816: }
817: $currentstring .= '}}'.$post;
818: }
819: return $currentstring;
820: }
821:
822: #-- <h5> tag
823: sub start_h5 {
824: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
825: my $currentstring = &end_p(); # Close off any prior paras.
826: if ($target eq 'web' || $target eq 'webgrade') {
827: $currentstring .= $token->[4];
828: } elsif ($target eq 'tex') {
829: my $pre;
830: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
831: if ($align eq 'center') {
832: $pre='\begin{center}';
833: } elsif ($align eq 'left') {
834: $pre='\rlap{';
835: } elsif ($align eq 'right') {
836: $pre=' \hfill \llap{';
837: }
838: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
839: if (not defined $TeXsize) {$TeXsize="large";}
840: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
841: }
842: return $currentstring;
843: }
844:
845: sub end_h5 {
846: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
847: my $currentstring = '';
848: if ($target eq 'web' || $target eq 'webgrade') {
849: $currentstring .= $token->[2];
850: } elsif ($target eq 'tex') {
851: my $post='\vskip 0 mm ';
852: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
853: if ($align eq 'center') {
854: $post='\end{center}';
855: } elsif ($align eq 'left') {
856: $post='} \hfill'.'\vskip 0 mm ';
857: } elsif ($align eq 'right') {
858: $post='}'.'\vskip 0 mm ';
859: }
860: $currentstring .= '}}'.$post;
861: }
862: return $currentstring;
863: }
864:
865: #-- <h6> tag
866: sub start_h6 {
867: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
868: my $currentstring = &end_p(); # Close off any prior paras.
869: if ($target eq 'web' || $target eq 'webgrade') {
870: $currentstring .= $token->[4];
871: } elsif ($target eq 'tex') {
872: my $pre;
873: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
874: if ($align eq 'center') {
875: $pre='\begin{center}';
876: } elsif ($align eq 'left') {
877: $pre='\rlap{';
878: } elsif ($align eq 'right') {
879: $pre=' \hfill \llap{';
880: }
881: my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
882: if (not defined $TeXsize) {$TeXsize="large";}
883: $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
884: }
885: return $currentstring;
886: }
887:
888: sub end_h6 {
889: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
890: my $currentstring = '';
891: if ($target eq 'web' || $target eq 'webgrade') {
892: $currentstring .= $token->[2];
893: } elsif ($target eq 'tex') {
894: my $post='\vskip 0 mm ';
895: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
896: if ($align eq 'center') {
897: $post='\end{center}';
898: } elsif ($align eq 'left') {
899: $post='} \hfill'.'\vskip 0 mm ';
900: } elsif ($align eq 'right') {
901: $post='}'.'\vskip 0 mm ';
902: }
903: $currentstring .= '}}'.$post;
904: }
905: return $currentstring;
906: }
907:
908: #--- <cite> tag (end tag required)
909: sub start_cite {
910: my ($target,$token) = @_;
911: my $currentstring = '';
912: if ($target eq 'web' || $target eq 'webgrade') {
913: $currentstring .= $token->[4];
914: } elsif ($target eq 'tex') {
915: $currentstring .= '\textit{';
916: }
917: return $currentstring;
918: }
919:
920: sub end_cite {
921: my ($target,$token) = @_;
922: my $currentstring = '';
923: if ($target eq 'web' || $target eq 'webgrade') {
924: $currentstring .= $token->[2];
925: } elsif ($target eq 'tex') {
926: $currentstring .= '}';
927: }
928: return $currentstring;
929: }
930:
931: #-- <i> tag (end tag required)
932: sub start_i {
933: my ($target,$token) = @_;
934: my $currentstring = '';
935: if ($target eq 'web' || $target eq 'webgrade') {
936: $currentstring .= $token->[4];
937: } elsif ($target eq 'tex') {
938: $currentstring .= '\textit{';
939: }
940: return $currentstring;
941: }
942:
943: sub end_i {
944: my ($target,$token) = @_;
945: my $currentstring = '';
946: if ($target eq 'web' || $target eq 'webgrade') {
947: $currentstring .= $token->[2];
948: } elsif ($target eq 'tex') {
949: $currentstring .= '}';
950: }
951: return $currentstring;
952: }
953:
954: #-- <address> tag (end tag required)
955: sub start_address {
956: my ($target,$token) = @_;
957: my $currentstring = '';
958: if ($target eq 'web' || $target eq 'webgrade') {
959: $currentstring .= $token->[4];
960: } elsif ($target eq 'tex') {
961: $currentstring .= '\textit{';
962: }
963: return $currentstring;
964: }
965:
966: sub end_address {
967: my ($target,$token) = @_;
968: my $currentstring = '';
969: if ($target eq 'web' || $target eq 'webgrade') {
970: $currentstring .= $token->[2];
971: } elsif ($target eq 'tex') {
972: $currentstring .= '}';
973: }
974: return $currentstring;
975: }
976:
977: #-- <dfn> tag (end tag required)
978: sub start_dfn {
979: my ($target,$token) = @_;
980: my $currentstring = '';
981: if ($target eq 'web' || $target eq 'webgrade') {
982: $currentstring .= $token->[4];
983: } elsif ($target eq 'tex') {
984: $currentstring .= '\textit{';
985: }
986: return $currentstring;
987: }
988:
989: sub end_dfn {
990: my ($target,$token) = @_;
991: my $currentstring = '';
992: if ($target eq 'web' || $target eq 'webgrade') {
993: $currentstring .= $token->[2];
994: } elsif ($target eq 'tex') {
995: $currentstring .= '}';
996: }
997: return $currentstring;
998: }
999:
1000: #-- <tt> tag (end tag required)
1001: sub start_tt {
1002: my ($target,$token) = @_;
1003: my $currentstring = '';
1004: if ($target eq 'web' || $target eq 'webgrade') {
1005: $currentstring .= $token->[4];
1006: } elsif ($target eq 'tex') {
1007: $currentstring .= '\texttt{';
1008: }
1009: return $currentstring;
1010: }
1011:
1012: sub end_tt {
1013: my ($target,$token) = @_;
1014: my $currentstring = '';
1015: if ($target eq 'web' || $target eq 'webgrade') {
1016: $currentstring .= $token->[2];
1017: } elsif ($target eq 'tex') {
1018: $currentstring .= '}';
1019: }
1020: return $currentstring;
1021: }
1022:
1023: #-- <kbd> tag (end tag required)
1024: sub start_kbd {
1025: my ($target,$token) = @_;
1026: my $currentstring = '';
1027: if ($target eq 'web' || $target eq 'webgrade') {
1028: $currentstring .= $token->[4];
1029: } elsif ($target eq 'tex') {
1030: $currentstring .= '\texttt{';
1031: }
1032: return $currentstring;
1033: }
1034:
1035: sub end_kbd {
1036: my ($target,$token) = @_;
1037: my $currentstring = '';
1038: if ($target eq 'web' || $target eq 'webgrade') {
1039: $currentstring .= $token->[2];
1040: } elsif ($target eq 'tex') {
1041: $currentstring .= '}';
1042: }
1043: return $currentstring;
1044: }
1045:
1046: #-- <code> tag (end tag required)
1047: sub start_code {
1048: my ($target,$token) = @_;
1049: my $currentstring = '';
1050: if ($target eq 'web' || $target eq 'webgrade') {
1051: $currentstring .= $token->[4];
1052: } elsif ($target eq 'tex') {
1053: $currentstring .= '\texttt{';
1054: }
1055: return $currentstring;
1056: }
1057:
1058: sub end_code {
1059: my ($target,$token) = @_;
1060: my $currentstring = '';
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: $currentstring .= $token->[2];
1063: } elsif ($target eq 'tex') {
1064: $currentstring .= '}';
1065: }
1066: return $currentstring;
1067: }
1068:
1069: #-- <em> tag (end tag required)
1070: sub start_em {
1071: my ($target,$token) = @_;
1072: my $currentstring = '';
1073: if ($target eq 'web' || $target eq 'webgrade') {
1074: $currentstring .= $token->[4];
1075: } elsif ($target eq 'tex') {
1076: $currentstring .= '\emph{';
1077: }
1078: return $currentstring;
1079: }
1080:
1081: sub end_em {
1082: my ($target,$token) = @_;
1083: my $currentstring = '';
1084: if ($target eq 'web' || $target eq 'webgrade') {
1085: $currentstring .= $token->[2];
1086: } elsif ($target eq 'tex') {
1087: $currentstring .= '}';
1088: }
1089: return $currentstring;
1090: }
1091:
1092: #-- <q> tag (end tag required)
1093: sub start_q {
1094: my ($target,$token) = @_;
1095: my $currentstring = '';
1096: if ($target eq 'web' || $target eq 'webgrade') {
1097: $currentstring .= $token->[4];
1098: } elsif ($target eq 'tex') {
1099: $currentstring .= '\emph{';
1100: }
1101: return $currentstring;
1102: }
1103:
1104: sub end_q {
1105: my ($target,$token) = @_;
1106: my $currentstring = '';
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $currentstring .= $token->[2];
1109: } elsif ($target eq 'tex') {
1110: $currentstring .= '}';
1111: }
1112: return $currentstring;
1113: }
1114:
1115: # <p> is a bit strange since it does not require a closing </p>
1116: # However in latex, we must often output closing stuff to end
1117: # environments and {}'s etc. Therefore we do all the work
1118: # of figuring out the ending strings in the start tag processing,
1119: # and provide a mechanism to output the stop text external
1120: # to tag processing.
1121: #
1122: {
1123:
1124: my $closing_string = ''; # String required to close <p>
1125:
1126: # Some tags are <p> fragile meaning that <p> inside of them
1127: # does not work within TeX mode. This is managed via the
1128: # counter below:
1129: #
1130:
1131: my $para_disabled = 0;
1132:
1133: sub disable_para {
1134: $para_disabled++;
1135: }
1136: sub enable_para {
1137: $para_disabled--;
1138: }
1139:
1140:
1141: #-- <p> tag (end tag optional)
1142: #optional attribute - align="center|left|right"
1143: sub start_p {
1144: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1145: my $currentstring = '';
1146: if ($target eq 'web' || $target eq 'webgrade') {
1147: $currentstring .= &end_p(); # close off prior para if in progress.
1148: $currentstring .= $token->[4];
1149: if (! ($currentstring =~ /\//)) {
1150: $closing_string = '</p>'; # Deal correctly with <p /> e.g.
1151: }
1152: } elsif ($target eq 'tex' && !$para_disabled) {
1153:
1154: $currentstring .= &end_p(); # close off prior para if in progress.
1155: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1156: if ($align eq 'center') {
1157: $currentstring .='\begin{center}\par ';
1158: $closing_string = '\end{center}';
1159: if (&is_inside_of($tagstack, "table")) {
1160: $currentstring = ¢er_correction().$currentstring;
1161: }
1162: } elsif ($align eq 'right') {
1163: $currentstring.="\n".'{\flushright ';
1164: # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
1165: $closing_string= "}\n";
1166: } elsif ($align eq 'left') {
1167: $currentstring.= "\n".'{\flushleft ';
1168: # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
1169: $closing_string = "}\n";
1170: } else {
1171: $currentstring.='\par ';
1172: if (&is_inside_of($tagstack, 'table')) {
1173: $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
1174: } else {
1175: $closing_string = '\strut\\\\\strut ';
1176: }
1177: }
1178:
1179: }
1180: return $currentstring;
1181: }
1182: #
1183: # End paragraph processing just requires that we output the
1184: # closing string that was saved and blank it.
1185: sub end_p {
1186: # Note only 'tex' mode uses disable_para and enable_para
1187: # so we don't need to know the target in the check below:
1188:
1189: if (!$para_disabled) {
1190: my $current_string = $closing_string;
1191: $closing_string = ''; # Not in a para anymore.
1192: return $current_string;
1193: } else {
1194: return '';
1195: }
1196:
1197: }
1198: }
1199: #-- <br> tag (end tag forbidden)
1200: sub start_br {
1201: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1202: my $currentstring = '';
1203: if ($target eq 'web' || $target eq 'webgrade') {
1204: $currentstring .= $token->[4];
1205: } elsif ($target eq 'tex') {
1206: my @tempo=@$tagstack;
1207: my $signal=0;
1208: # Not going to factor this to is_inside_of since that would require
1209: # multiple stack traversals.
1210: #
1211: for (my $i=$#tempo;$i>=0;$i--) {
1212: if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
1213: ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
1214: $signal=1;
1215: }
1216: if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
1217: my $colspan =
1218: &Apache::lonxml::get_param('colspan', $parstack,
1219: $safeeval, $i, 0);
1220: if ($colspan) {
1221: $signal = 2;
1222: }
1223: }
1224: }
1225: if ($signal eq 1) {
1226: $currentstring .= ' \vskip 0 mm ';
1227: } elsif ($signal eq '2') {
1228: # multicol doesn't like blank lines
1229: } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
1230: $currentstring .= '\strut \\\\ \strut ';
1231: }
1232: }
1233: return $currentstring;
1234: }
1235:
1236: sub end_br {
1237: my ($target,$token) = @_;
1238: my $currentstring = '';
1239: if ($target eq 'web' || $target eq 'webgrade') {
1240: $currentstring .= $token->[2];
1241: }
1242: return $currentstring;
1243: }
1244:
1245: #-- <big> tag (end tag required)
1246: sub start_big {
1247: my ($target,$token) = @_;
1248: my $currentstring = '';
1249: if ($target eq 'web' || $target eq 'webgrade') {
1250: $currentstring .= $token->[4];
1251: } elsif ($target eq 'tex') {
1252: $currentstring .= '{\large ';
1253: }
1254: return $currentstring;
1255: }
1256:
1257: sub end_big {
1258: my ($target,$token) = @_;
1259: my $currentstring = '';
1260: if ($target eq 'web' || $target eq 'webgrade') {
1261: $currentstring .= $token->[2];
1262: } elsif ($target eq 'tex') {
1263: $currentstring .= '}';
1264: }
1265: return $currentstring;
1266: }
1267:
1268: #-- <small> tag (end tag required)
1269: sub start_small {
1270: my ($target,$token) = @_;
1271: my $currentstring = '';
1272: if ($target eq 'web' || $target eq 'webgrade') {
1273: $currentstring .= $token->[4];
1274: } elsif ($target eq 'tex') {
1275: $currentstring .= '{\footnotesize ';
1276: }
1277: return $currentstring;
1278: }
1279:
1280: sub end_small {
1281: my ($target,$token) = @_;
1282: my $currentstring = '';
1283: if ($target eq 'web' || $target eq 'webgrade') {
1284: $currentstring .= $token->[2];
1285: } elsif ($target eq 'tex') {
1286: $currentstring .= '}';
1287: }
1288: return $currentstring;
1289: }
1290:
1291: #-- <basefont> tag (end tag forbidden)
1292: sub start_basefont {
1293: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1294: my $currentstring = '';
1295: if ($target eq 'web' || $target eq 'webgrade') {
1296: $currentstring = $token->[4];
1297: } elsif ($target eq 'tex') {
1298: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1299: if (defined $basesize) {
1300: $currentstring = '{\\'.$basesize.' ';
1301: }
1302: }
1303: return $currentstring;
1304: }
1305:
1306: sub end_basefont {
1307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1308: my $currentstring = '';
1309: if ($target eq 'web' || $target eq 'webgrade') {
1310: $currentstring = $token->[4];
1311: } elsif ($target eq 'tex') {
1312: my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1313: if (defined $basesize) {
1314: $currentstring = '}';
1315: }
1316: }
1317: return $currentstring;
1318: }
1319:
1320: #-- <font> tag (end tag required)
1321: sub start_font {
1322: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1323: my $currentstring = '';
1324: if ($target eq 'web' || $target eq 'webgrade') {
1325: my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
1326: if ($face!~/symbol/i) {
1327: if (($env{'browser.fontenhance'} eq 'on') ||
1328: ($env{'browser.blackwhite'} eq 'on')) { return ''; }
1329: }
1330: $currentstring = $token->[4];
1331: } elsif ($target eq 'tex') {
1332: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1333: if (defined $fontsize) {
1334: $currentstring = '{\\'.$fontsize.' ';
1335: }
1336: }
1337: return $currentstring;
1338: }
1339:
1340: sub end_font {
1341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1342: my $currentstring = '';
1343: if ($target eq 'web' || $target eq 'webgrade') {
1344: $currentstring = $token->[2];
1345: } elsif ($target eq 'tex') {
1346: my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
1347: if (defined $fontsize) {
1348: $currentstring = '}';
1349: }
1350: }
1351: return $currentstring;
1352: }
1353:
1354: #-- <strike> tag (end tag required)
1355: sub start_strike {
1356: my ($target,$token) = @_;
1357: my $currentstring = '';
1358: if ($target eq 'web' || $target eq 'webgrade') {
1359: $currentstring .= $token->[4];
1360: } elsif ($target eq 'tex') {
1361: &Apache::lonxml::startredirection();
1362: }
1363: return $currentstring;
1364: }
1365:
1366: sub end_strike {
1367: my ($target,$token) = @_;
1368: my $currentstring = '';
1369: if ($target eq 'web' || $target eq 'webgrade') {
1370: $currentstring .= $token->[2];
1371: } elsif ($target eq 'tex') {
1372: $currentstring=&Apache::lonxml::endredirection();
1373: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1374: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1375: $currentstring=~s/(\S)\s*$/$1\}/;
1376: }
1377: return $currentstring;
1378: }
1379:
1380: #-- <s> tag (end tag required)
1381: sub start_s {
1382: my ($target,$token) = @_;
1383: my $currentstring = '';
1384: if ($target eq 'web' || $target eq 'webgrade') {
1385: $currentstring .= $token->[4];
1386: } elsif ($target eq 'tex') {
1387: &Apache::lonxml::startredirection();
1388: }
1389: return $currentstring;
1390: }
1391:
1392: sub end_s {
1393: my ($target,$token) = @_;
1394: my $currentstring = '';
1395: if ($target eq 'web' || $target eq 'webgrade') {
1396: $currentstring .= $token->[2];
1397: } elsif ($target eq 'tex') {
1398: $currentstring=&Apache::lonxml::endredirection();
1399: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1400: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1401: $currentstring=~s/(\S)\s*$/$1\}/;
1402: }
1403: return $currentstring;
1404: }
1405:
1406: #-- <sub> tag (end tag required)
1407: sub start_sub {
1408: my ($target,$token) = @_;
1409: my $currentstring = '';
1410: if ($target eq 'web' || $target eq 'webgrade') {
1411: $currentstring .= $token->[4];
1412: } elsif ($target eq 'tex') {
1413: $currentstring .= '\ensuremath{_{';
1414: }
1415: return $currentstring;
1416: }
1417:
1418: sub end_sub {
1419: my ($target,$token) = @_;
1420: my $currentstring = '';
1421: if ($target eq 'web' || $target eq 'webgrade') {
1422: $currentstring .= $token->[2];
1423: } elsif ($target eq 'tex') {
1424: $currentstring .= '}}';
1425: }
1426: return $currentstring;
1427: }
1428:
1429: #-- <sup> tag (end tag required)
1430: sub start_sup {
1431: my ($target,$token) = @_;
1432: my $currentstring = '';
1433: if ($target eq 'web' || $target eq 'webgrade') {
1434: $currentstring .= $token->[4];
1435: } elsif ($target eq 'tex') {
1436: $currentstring .= '\ensuremath{^{';
1437: }
1438: return $currentstring;
1439: }
1440:
1441: sub end_sup {
1442: my ($target,$token) = @_;
1443: my $currentstring = '';
1444: if ($target eq 'web' || $target eq 'webgrade') {
1445: $currentstring .= $token->[2];
1446: } elsif ($target eq 'tex') {
1447: $currentstring .= '}}';
1448: }
1449: return $currentstring;
1450: }
1451:
1452: #-- <hr> tag (end tag forbidden)
1453: sub start_hr {
1454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1455: my $currentstring = &end_p(); # End enclosing para.
1456: if ($target eq 'web' || $target eq 'webgrade') {
1457: $currentstring .= $token->[4];
1458: } elsif ($target eq 'tex') {
1459: my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1460: if (defined $LaTeXwidth) {
1461: if ($LaTeXwidth=~/^%/) {
1462: substr($LaTeXwidth,0,1)='';
1463: $LaTeXwidth=($LaTeXwidth/100).'\textwidth';
1464: }
1465: } else {
1466: $LaTeXwidth ='0.9\textwidth';
1467: }
1468: my ($pre,$post);
1469: my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
1470: if (($align eq 'center') || (not defined $align)) {
1471: $pre=''; $post='';
1472: } elsif ($align eq 'left') {
1473: $pre='\rlap{'; $post='} \hfill';
1474: } elsif ($align eq 'right') {
1475: $pre=' \hfill \llap{'; $post='}';
1476: }
1477: $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
1478: $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
1479: }
1480: return $currentstring;
1481: }
1482:
1483: sub end_hr {
1484: my ($target,$token) = @_;
1485: my $currentstring = '';
1486: if ($target eq 'web' || $target eq 'webgrade') {
1487: $currentstring .= $token->[2];
1488: }
1489: return $currentstring;
1490: }
1491:
1492: #-- <div> tag (end tag required)
1493: {
1494:
1495: # Since div can be nested, the stack below is used
1496: # in 'tex' mode to store the ending strings
1497: # for the div stack.
1498:
1499: my @div_end_stack;
1500:
1501: sub start_div {
1502: my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
1503: my $currentstring = &end_p(); # Close enclosing para.
1504: if ($target eq 'web' || $target eq 'webgrade') {
1505: $currentstring .= $token->[4];
1506: }
1507: if ($target eq 'tex') {
1508: # 4 possible alignments: left, right, center, and -missing-.
1509:
1510: my $endstring = '';
1511:
1512: my $align = lc(&Apache::lonxml::get_param('align', $parstack,
1513: $safeeval, undef, 1));
1514: if ($align eq 'center') {
1515: $currentstring .= '\begin{center}';
1516: $endstring = '\end{center}';
1517: if (&is_inside_of($tagstack, "table")) {
1518: $currentstring = ¢er_correction().$currentstring;
1519: }
1520: }
1521: elsif ($align eq 'right') {
1522: $currentstring .= '\begin{flushright}';
1523: $endstring .= '\end{flushright}';
1524: } elsif ($align eq 'left') {
1525: $currentstring .= '\begin{flushleft}';
1526: $endstring = '\end{flushleft}';
1527: } else {
1528:
1529: }
1530: $currentstring .= "\n"; # For human readability.
1531: $endstring = "\n$endstring\n"; # For human readability
1532: push(@div_end_stack, $endstring);
1533: }
1534: return $currentstring;
1535: }
1536:
1537: sub end_div {
1538: my ($target,$token) = @_;
1539: my $currentstring = '';
1540: if ($target eq 'web' || $target eq 'webgrade') {
1541: $currentstring .= $token->[2];
1542: }
1543: if ($target eq 'tex') {
1544: my $endstring = pop @div_end_stack;
1545: $currentstring .= $endstring;
1546: }
1547: return $currentstring;
1548: }
1549: }
1550:
1551: #-- <a> tag (end tag required)
1552: sub start_a {
1553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1554: my $currentstring = '';
1555: if ($target eq 'web' || $target eq 'webgrade') {
1556: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
1557: undef,1);
1558: $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
1559: } elsif ($target eq 'tex') {
1560: my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
1561: my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
1562: if ($a=~/\S/) {
1563: $a=~s/([^\\])%/$1\\\%/g;
1564: $currentstring .= '\ref{URI: '.$a.'}';
1565: } elsif ($b=~/\S/) {
1566: $currentstring .= '\ref{Anchor: '.$b.'}';
1567: } else {
1568: $currentstring.='';
1569: }
1570: }
1571: return $currentstring;
1572: }
1573:
1574: sub end_a {
1575: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1576: my $currentstring = '';
1577: if ($target eq 'web' || $target eq 'webgrade') {
1578: $currentstring .= $token->[2];
1579: }
1580: return $currentstring;
1581: }
1582:
1583: #-- <li> tag (end tag optional)
1584: sub start_li {
1585: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1586: my $currentstring = '';
1587: if ($target eq 'web' || $target eq 'webgrade') {
1588: $currentstring = $token->[4];
1589: } elsif ($target eq 'tex') {
1590: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1591: my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
1592: #FIXME need to support types i and I
1593: if ($type=~/disc/) {
1594: $currentstring .= ' \item[$\bullet$] ';
1595: } elsif ($type=~/circle/) {
1596: $currentstring .= ' \item[$\circ$] ';
1597: } elsif ($type=~/square/) {
1598: $currentstring .= ' \item[$\diamond$] ';
1599: } elsif ($type eq '1') {
1600: $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
1601: } elsif ($type eq 'A') {
1602: $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
1603: } elsif ($type eq 'a') {
1604: $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
1605: } elsif ($value ne '') {
1606: $currentstring .= ' \item['.$value.'] ';
1607: } else {
1608: $currentstring .= ' \item ';
1609: }
1610: $Apache::londefdef::list_index++;
1611: }
1612: return $currentstring;
1613: }
1614:
1615: sub end_li {
1616: my ($target,$token) = @_;
1617: my $currentstring = &end_p(); # In case there's a <p> in the <li>
1618: if ($target eq 'web' || $target eq 'webgrade') {
1619: $currentstring .= $token->[2];
1620: }
1621: return $currentstring;
1622: }
1623:
1624: #-- <u> tag (end tag required)
1625: sub start_u {
1626: my ($target,$token) = @_;
1627: my $currentstring = '';
1628: if ($target eq 'web' || $target eq 'webgrade') {
1629: $currentstring .= $token->[4];
1630: } elsif ($target eq 'tex') {
1631: &Apache::lonxml::startredirection();
1632: }
1633: return $currentstring;
1634: }
1635:
1636: sub end_u {
1637: my ($target,$token) = @_;
1638: my $currentstring = '';
1639: if ($target eq 'web' || $target eq 'webgrade') {
1640: $currentstring .= $token->[2];
1641: } elsif ($target eq 'tex') {
1642: $currentstring=&Apache::lonxml::endredirection();
1643: $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
1644: $currentstring=~s/^\s*(\S)/\\underline\{$1/;
1645: $currentstring=~s/(\S)\s*$/$1\}/;
1646: }
1647: return $currentstring;
1648: }
1649:
1650: #-- <ul> tag (end tag required)
1651: sub start_ul {
1652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1653: my $currentstring = &end_p(); # Close off enclosing list.
1654: if ($target eq 'web' || $target eq 'webgrade') {
1655: $currentstring .= $token->[4];
1656: } elsif ($target eq 'tex') {
1657: my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1658: $Apache::londefdef::list_index=0;
1659: if ($TeXtype eq 'disc') {
1660: $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
1661: '\renewcommand{\labelitemii}{$\bullet$}'.
1662: '\renewcommand{\labelitemiii}{$\bullet$}'.
1663: '\renewcommand{\labelitemiv}{$\bullet$}';
1664: } elsif ($TeXtype eq 'circle') {
1665: $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
1666: '\renewcommand{\labelitemii}{$\circ$}'.
1667: '\renewcommand{\labelitemiii}{$\circ$}'.
1668: '\renewcommand{\labelitemiv}{$\circ$}';
1669: } elsif ($TeXtype eq 'square') {
1670: $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
1671: '\renewcommand{\labelitemii}{$\diamond$}'.
1672: '\renewcommand{\labelitemiii}{$\diamond$}'.
1673: '\renewcommand{\labelitemiv}{$\diamond$}';
1674: }
1675: $currentstring .= '\strut \begin{itemize}';
1676: }
1677: return $currentstring;
1678: }
1679:
1680: sub end_ul {
1681: my ($target,$token) = @_;
1682: my $currentstring = '';
1683: if ($target eq 'web' || $target eq 'webgrade') {
1684: $currentstring = $token->[2];
1685: } elsif ($target eq 'tex') {
1686: $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
1687: '\renewcommand{\labelitemii}{$\bullet$}'.
1688: '\renewcommand{\labelitemiii}{$\bullet$}'.
1689: '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
1690: }
1691: return $currentstring;
1692: }
1693:
1694: #-- <menu> tag (end tag required)
1695: sub start_menu {
1696: my ($target,$token) = @_;
1697: my $currentstring = '';
1698: if ($target eq 'web' || $target eq 'webgrade') {
1699: $currentstring = $token->[4];
1700: } elsif ($target eq 'tex') {
1701: $currentstring = " \\begin{itemize} ";
1702: }
1703: return $currentstring;
1704: }
1705:
1706: sub end_menu {
1707: my ($target,$token) = @_;
1708: my $currentstring = '';
1709: if ($target eq 'web' || $target eq 'webgrade') {
1710: $currentstring = $token->[2];
1711: } elsif ($target eq 'tex') {
1712: $currentstring = " \\end{itemize}";
1713: }
1714: return $currentstring;
1715: }
1716:
1717: #-- <dir> tag (end tag required)
1718: sub start_dir {
1719: my ($target,$token) = @_;
1720: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1721: if ($target eq 'web' || $target eq 'webgrade') {
1722: $currentstring .= $token->[4];
1723: } elsif ($target eq 'tex') {
1724: $currentstring .= " \\begin{itemize} ";
1725: }
1726: return $currentstring;
1727: }
1728:
1729: sub end_dir {
1730: my ($target,$token) = @_;
1731: my $currentstring = '';
1732: if ($target eq 'web' || $target eq 'webgrade') {
1733: $currentstring = $token->[2];
1734: } elsif ($target eq 'tex') {
1735: $currentstring = " \\end{itemize}";
1736: }
1737: return $currentstring;
1738: }
1739:
1740: #-- <ol> tag (end tag required)
1741: sub start_ol {
1742: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1743: my $currentstring = &end_p(); # In case there's a <p> prior to the list.
1744: if ($target eq 'web' || $target eq 'webgrade') {
1745: $currentstring .= $token->[4];
1746: } elsif ($target eq 'tex') {
1747: $Apache::londefdef::list_index=0;
1748: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
1749: if ($type eq '1') {
1750: $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1751: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1752: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1753: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
1754: } elsif ($type eq 'A') {
1755: $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
1756: '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
1757: '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
1758: '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
1759: } elsif ($type eq 'a') {
1760: $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
1761: '\renewcommand{\labelenumii}{\alph{enumii}.}'.
1762: '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
1763: '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
1764: } elsif ($type eq 'i') {
1765: $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
1766: '\renewcommand{\labelenumii}{\roman{enumii}.}'.
1767: '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
1768: '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
1769: } elsif ($type eq 'I') {
1770: $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
1771: '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
1772: '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
1773: '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
1774: }
1775: $currentstring .= '\strut \begin{enumerate}';
1776: }
1777: return $currentstring;
1778: }
1779:
1780: sub end_ol {
1781: my ($target,$token) = @_;
1782: my $currentstring = '';
1783: if ($target eq 'web' || $target eq 'webgrade') {
1784: $currentstring = $token->[2];
1785: } elsif ($target eq 'tex') {
1786: $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
1787: '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
1788: '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
1789: '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
1790: }
1791: return $currentstring;
1792: }
1793:
1794: #-- <dl> tag (end tag required)
1795: sub start_dl {
1796: my ($target,$token) = @_;
1797: my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
1798: if ($target eq 'web' || $target eq 'webgrade') {
1799: $currentstring .= $token->[4];
1800: } elsif ($target eq 'tex') {
1801: $currentstring .= '\begin{description}';
1802: $Apache::londefdef::DL++;
1803: push(@Apache::londefdef::description,[]);
1804: $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
1805: $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
1806: $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
1807: }
1808: return $currentstring;
1809: }
1810:
1811: sub end_dl {
1812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1813: my $currentstring = '';
1814: if ($target eq 'web' || $target eq 'webgrade') {
1815: $currentstring = $token->[2];
1816: } elsif ($target eq 'tex') {
1817: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1818: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1819: foreach my $element (@{$Apache::londefdef::description[-1]}) {
1820: $currentstring.=' '.$element.' ';
1821: }
1822: pop(@Apache::londefdef::description);
1823: $currentstring.='\end{description}';
1824: delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
1825: delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
1826: delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
1827: $Apache::londefdef::DL--;
1828: }
1829: return $currentstring;
1830: }
1831:
1832: #-- <dt> tag (end tag optional)
1833: sub start_dt {
1834: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1835: my $currentstring='';
1836: if ($target eq 'web' || $target eq 'webgrade') {
1837: $currentstring = $token->[4];
1838: } elsif ($target eq 'tex') {
1839: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1840: if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
1841: &Apache::lonxml::startredirection();
1842: $Apache::londefdef::DT[-1]++;
1843: $Apache::londefdef::seenDT[-1]=1;
1844: }
1845: return $currentstring;
1846: }
1847:
1848: sub end_dt {
1849: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1850: my $currentstring = '';
1851: if ($target eq 'web' || $target eq 'webgrade') {
1852: $currentstring = $token->[2];
1853: } elsif ($target eq 'tex') {
1854: if ($Apache::londefdef::DT[-1]) {
1855: my $data=&item_cleanup();
1856: push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
1857: $Apache::londefdef::DT[-1]--;
1858: }
1859: }
1860: return $currentstring;
1861: }
1862:
1863: sub item_cleanup {
1864: my $item=&Apache::lonxml::endredirection();
1865: $item=~s/\\begin{center}//g;
1866: $item=~s/\\end{center}//g;
1867: return $item;
1868: }
1869:
1870: #-- <dd> tag (end tag optional)
1871: sub start_dd {
1872: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1873: my $currentstring = '';
1874: if ($target eq 'web' || $target eq 'webgrade') {
1875: $currentstring = $token->[4];
1876: } elsif ($target eq 'tex') {
1877: if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
1878: if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
1879: if (!$Apache::londefdef::seenDT[-1]) {
1880: push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
1881: }
1882: push(@{$Apache::londefdef::description[-1]},'');
1883: $Apache::londefdef::description[-1]->[-1].=' \strut ';
1884: $Apache::londefdef::DD[-1]++;
1885: &Apache::lonxml::startredirection();
1886: }
1887: return $currentstring;
1888: }
1889:
1890: sub end_dd {
1891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1892: my $currentstring = '';
1893: if ($target eq 'web' || $target eq 'webgrade') {
1894: $currentstring = $token->[2];
1895: } elsif ($target eq 'tex') {
1896: $Apache::londefdef::description[-1]->[-1].=
1897: &Apache::lonxml::endredirection().' \vskip 0mm ';
1898: $Apache::londefdef::DD[-1]--;
1899: }
1900: return $currentstring;
1901: }
1902:
1903: #-- <table> tag (end tag required)
1904: # <table> also ends any prior <p> that is not closed.
1905: # but, unless I allow <p>'s to nest, that's the
1906: # only way I could think of to allow <p> in
1907: # <tr> <th> bodies
1908: #
1909: #list of supported attributes: border,width,TeXwidth
1910: sub start_table {
1911: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
1912: my $textwidth = '';
1913: my $currentstring = &end_p();
1914: if ($target eq 'web' || $target eq 'webgrade') {
1915: $currentstring .= $token->[4];
1916: } elsif ($target eq 'tex') {
1917: my $aa = {};
1918: push @Apache::londefdef::table, $aa;
1919: $Apache::londefdef::table[-1]{'row_number'} = -1;
1920: #maximum table's width (default coincides with text line length)
1921: if ($#Apache::londefdef::table==0) {
1922: $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
1923: $textwidth=~/(\d+\.?\d*)/;
1924: $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
1925: } else {
1926: if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
1927: #the maximum width of nested table is determined by LATeX width of parent cell
1928: $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
1929: } else {
1930: #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
1931: $textwidth=$Apache::londefdef::table[-2]{'width'};
1932: for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
1933: $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
1934: }
1935: }
1936: }
1937:
1938: # width either comes forced from the TeXwidth or the width parameters.
1939: # in either case it can be a percentage or absolute width.
1940: # in the width case we ignore absolute width
1941: my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
1942: if (!defined($TeXwidth)) {
1943: my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
1944: $safeeval,undef,1);
1945: if ($htmlwidth =~ /%/) {
1946: $TeXwidth = $htmlwidth;
1947: } else {
1948: $TeXwidth = $textwidth;
1949: }
1950: } else {
1951: $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
1952: }
1953: if ($TeXwidth=~/%/) {
1954: $Apache::londefdef::table[-1]{'percent'}=1;
1955: $TeXwidth=~/(\d+)/;
1956: $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
1957: } else {
1958: $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
1959: }
1960: # In the end, however the table width cannot be wider than $textwidth...
1961:
1962: if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
1963: $Apache::londefdef::table[-1]{'width'} = $textwidth;
1964: }
1965:
1966: #table's border
1967: my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
1968: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
1969: unless (defined $border) { $border = 0; }
1970: if ($border) {
1971: $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
1972: $Apache::londefdef::table[-1]{'vinc'} = '&';
1973: $Apache::londefdef::table[-1]{'vvinc'} = '|';
1974: } else {
1975: $Apache::londefdef::table[-1]{'hinc'} = '';
1976: $Apache::londefdef::table[-1]{'vinc'} = '&';
1977: $Apache::londefdef::table[-1]{'vvinc'} = '';
1978: }
1979: if ($#Apache::londefdef::table==0) {
1980: # Note that \newline seems to destroy the alignment envs.
1981: # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
1982: $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
1983: }
1984: $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
1985: $Apache::londefdef::table[-1]{'TeXlen'}=[];
1986: $Apache::londefdef::table[-1]{'objectlen'}=[];
1987: $Apache::londefdef::table[-1]{'objectsignal'}=[];
1988: $Apache::londefdef::table[-1]{'maxlen'}=[];
1989: $Apache::londefdef::table[-1]{'minlen'}=[];
1990: $Apache::londefdef::table[-1]{'content'}=[];
1991: $Apache::londefdef::table[-1]{'align'}=[];
1992: $currentstring.='\keephidden{NEW TABLE ENTRY}';
1993:
1994:
1995: }
1996: return $currentstring;
1997: }
1998:
1999: sub end_table {
2000: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2001: my $currentstring = '';
2002: if ($target eq 'web' || $target eq 'webgrade') {
2003: $currentstring = $token->[2];
2004: } elsif ($target eq 'tex') {
2005: my $inmemory = '';
2006: my $output = '';
2007: my $WARNING='';
2008: #width of columns from TeXwidth attributes
2009:
2010: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2011: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2012: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
2013: $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
2014: }
2015: }
2016: }
2017: #free space and number of empty columns
2018: my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
2019: if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
2020: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2021: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
2022: $empty_columns++;
2023: } else {
2024: $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
2025: }
2026: }
2027: #boundaries for contents columns
2028: my @min_len=();#columns can not be narrower
2029: my @max_len=();#maximum length of column
2030: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2031: my ($localmin,$localmax)=(0,0);
2032: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2033: if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
2034: $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
2035: }
2036: if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
2037: $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
2038: }
2039: }
2040: push @min_len, $localmin;
2041: push @max_len, $localmax;
2042: }
2043: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2044: my $localmin=0,;
2045: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2046: if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
2047: $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
2048: }
2049: }
2050: if ($max_len[$jn]<$localmin) {
2051: $max_len[$jn]=$localmin;
2052: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2053: }#object size is bigger
2054: if ($min_len[$jn]<$localmin) {
2055: $min_len[$jn]=$localmin;
2056: $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
2057: }#object size is bigger
2058: if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
2059: $min_len[$jn]=0;
2060: $max_len[$jn]=0;
2061: }
2062: }
2063: #final adjustment of column width
2064: my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
2065: my @adjust=();
2066: #step 1. adjustment by maximum value
2067: my $space_neeeded=0;
2068: for (my $jn=0;$jn<=$#max_len;$jn++) {
2069: $space_neeeded=$space_neeeded+$max_len[$jn];
2070: }
2071: if ($space_neeeded<=$available_space) {
2072: for (my $jn=0;$jn<=$#max_len;$jn++) {
2073: if ($fwidth[$jn]==0) {
2074: $fwidth[$jn]=$max_len[$jn];
2075: }
2076: }
2077: } else {
2078: #step 2. adjustment by minimum value (estimation)
2079: $space_neeeded=0;
2080: for (my $jn=0;$jn<=$#min_len;$jn++) {
2081: $space_neeeded+=$min_len[$jn];
2082: }
2083: if ($space_neeeded>$available_space) {
2084: $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
2085: for (my $jn=0;$jn<=$#max_len;$jn++) {
2086: if ($fwidth[$jn]==0) {
2087: $fwidth[$jn]=$min_len[$jn];
2088: }
2089: }
2090: #check if we have objects which can be scaled
2091: my $how_many_to_scale=0;
2092: my @to_scale=();
2093: for (my $jn=0;$jn<=$#max_len;$jn++) {
2094: if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
2095: $how_many_to_scale++;
2096: push @to_scale, $jn;
2097: }
2098: }
2099: if ($how_many_to_scale>0) {
2100: my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
2101: foreach my $jn (@to_scale) {
2102: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2103: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
2104: if ($1 ne '') {
2105: my $current_length=&recalc($1);
2106: $current_length=~/(\d+\.?\d*)/;
2107: $current_length=$current_length-$space_to_adjust;
2108: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
2109: }
2110: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
2111: if ($1 ne '') {
2112: my $current_length=$1;
2113: $current_length=$current_length-$space_to_adjust;
2114: $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
2115: }
2116: }
2117: $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
2118: }
2119: }
2120: } else {
2121: #step 3. adjustment over minimal + corrections
2122: my $enlarge_coef=$available_space/$space_neeeded;
2123: my $acsessive=0;
2124: for (my $jn=0;$jn<=$#min_len;$jn++) {
2125: $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
2126: if ($adjust[$jn]>$max_len[$jn]) {
2127: $fwidth[$jn]=$max_len[$jn];
2128: $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
2129: $adjust[$jn]=0;
2130: }
2131: }
2132: if ($acsessive>0) {
2133: #we have an excess of space and can redistribute it
2134: my $notempty_columns=0;
2135: for (my $jn=0;$jn<=$#min_len;$jn++) {
2136: if ($adjust[$jn]!=0) {
2137: $notempty_columns++;
2138: }
2139: }
2140: my $per_column=$acsessive/$notempty_columns;
2141: for (my $jn=0;$jn<=$#min_len;$jn++) {
2142: if ($adjust[$jn]!=0) {
2143: $adjust[$jn]+=$per_column;
2144: $fwidth[$jn]=$adjust[$jn];
2145: }
2146: }
2147: } else {
2148: for (my $jn=0;$jn<=$#min_len;$jn++) {
2149: $fwidth[$jn]=$adjust[$jn];
2150: }
2151: }
2152: }
2153: }
2154: #use all available width if it is defined in % or as TeXwidth
2155: if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
2156: my $current=0;
2157: for (my $i=0;$i<=$#fwidth;$i++) {
2158: $current+=$fwidth[$i];
2159: }
2160: my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
2161: for (my $i=0;$i<=$#fwidth;$i++) {
2162: $fwidth[$i]*=$coef;
2163: }
2164: }
2165: #removing of empty columns if allowed
2166: my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
2167: if ($permission eq 'yes') {
2168: my @cleaned_table=();
2169: my @cleaned_header=();
2170: my $colind=0;
2171: for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
2172: if ($fwidth[$jn]!=0) {
2173: #we need to copy column
2174: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2175: $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2176: $cleaned_header[$colind]=$fwidth[$jn];
2177: }
2178: $colind++;
2179: }
2180: }
2181: $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
2182: @fwidth=@cleaned_header;
2183: }
2184: #construct header of the table
2185: my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
2186: for (my $in=0;$in<=$#fwidth;$in++) {
2187: $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
2188: }
2189: $header_of_table .= '}';
2190: #fill the table
2191: for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
2192: my $have_rowspan = 0;
2193: for (my $jn=0;$jn<=$#fwidth;$jn++) {
2194:
2195: #-----------------------------------------------------------
2196: # I think this order of doing things will ensure that
2197: # single rowspan, columspan and combined row/colspans will
2198: # work correctly. LaTeX is delicate here.
2199: # RF.
2200:
2201: # Start a rowspan if necessary:
2202:
2203: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2204: my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
2205: #
2206: # Do the appropriate magic if this has a colspan
2207: #
2208:
2209: if ($colspan > 1) {
2210: $output .= '\multicolumn{'.
2211: $colspan
2212: .'}{|l|}{';
2213: }
2214:
2215: if ($rowspan > 1) {
2216: $have_rowspan++;
2217: $output .= '\multirow{'.$rowspan.'}[0]{'.$fwidth[$jn].'mm}{';
2218: }
2219: if (($rowspan eq '^') || ($rowspan eq '_')) {
2220: $have_rowspan++;
2221: }
2222: #--------------------------------------------------------------
2223:
2224: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2225: $output.=¢er_correction().'\begin{center}';
2226: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2227: $output.=' \hfill \llap{'
2228: }
2229: $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
2230: if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
2231: $output.='\end{center}';
2232: } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
2233: $output.='} ';
2234: }
2235: # Close off any open multirow:
2236:
2237: if ($rowspan > 1) {
2238: $output .= '}';
2239: }
2240: # Close off the colspan...
2241: #
2242: if ($colspan > 1) {
2243: $output .= '}';
2244: $jn += $colspan-1; # Adjust for number of rows really left.
2245: }
2246: if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
2247: }
2248: # If have_rowspan > 0, and borders are on, then
2249: # we need to do more than put an \hline at the bottom of row.
2250: # we need to do the appropriate \cline to ensure that
2251: # the spanned rows don't have \hlines through them.
2252:
2253: if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
2254: $output .= ' \\\\ ';
2255: for (my $jn=0; $jn<=$#fwidth;$jn++) {
2256: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
2257: if ($rowspan ne "^") {
2258: if (($rowspan <= 1) || ($rowspan eq '_')) {
2259: my $column = $jn+1;
2260: $output .= '\cline{'.$column.'-'.$column.'} ';
2261: }
2262: }
2263: }
2264:
2265: } else {
2266: $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
2267: }
2268: }
2269: # Note that \newline destroys alignment env's produced by e.g. <div>
2270: # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
2271: $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
2272: if ($#Apache::londefdef::table > 0) {
2273: my $inmemory = $Apache::londefdef::table[-1]{'output'};
2274: # Figure out max/and min width by summing us and then
2275: # apply that to the current column of the table we nest in
2276: # if it's larger than the current width or the current width
2277: # is undefined.
2278: #
2279: my $min_nested_width = 0;
2280: my $max_nested_width = 0;
2281: for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
2282: $min_nested_width += $min_len[$col];
2283: $max_nested_width += $max_len[$col];
2284:
2285: }
2286: # Fudge in an extra 5 mm for borders etc:
2287:
2288: $min_nested_width += 5;
2289: $max_nested_width += 5;
2290:
2291: my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
2292: my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
2293: if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
2294: $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
2295: }
2296: if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
2297: $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
2298: }
2299:
2300: pop @Apache::londefdef::table;
2301: push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
2302: } else {
2303: $currentstring .= $Apache::londefdef::table[-1]{'output'};
2304: pop @Apache::londefdef::table;
2305: undef @Apache::londefdef::table;
2306: }
2307: }
2308: return $currentstring;
2309: }
2310:
2311: #-- <tr> tag (end tag optional)
2312: sub start_tr {
2313: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2314: my $currentstring = '';
2315: if ($target eq 'web' || $target eq 'webgrade') {
2316: $currentstring = $token->[4];
2317: } elsif ($target eq 'tex') {
2318: $Apache::londefdef::table[-1]{'row_number'}++;
2319: my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
2320: if ($alignchar ne '') {
2321: push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
2322: } else {
2323: push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
2324: }
2325: push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
2326: #
2327: # Need to save the number of table columns to preserve the max # columns.
2328: #
2329: $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
2330: $Apache::londefdef::table[-1]{'counter_columns'} = -1;
2331: push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
2332: push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
2333: push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
2334: push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
2335: push @ {$Apache::londefdef::table[-1]{'content'}}, [];
2336: }
2337: return $currentstring;
2338: }
2339:
2340: sub end_tr {
2341: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2342: my $currentstring = &end_p(); # Close any pending <p> in the row.
2343: if ($target eq 'web' || $target eq 'webgrade') {
2344: $currentstring .= $token->[2];
2345: } elsif ($target eq 'tex') {
2346: if ($Apache::londefdef::TD_redirection) {
2347: &end_td_tex($parstack,$parser,$safeeval);
2348: }
2349: # Counter columns must be the maximum number of columns seen
2350: # in the table so far so:
2351: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
2352: $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
2353: }
2354:
2355:
2356:
2357: }
2358: return $currentstring;
2359: }
2360:
2361: #-- <td> tag (end tag optional)
2362: sub start_td {
2363: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2364: my $currentstring = '';
2365: if ($target eq 'web' || $target eq 'webgrade') {
2366: $currentstring = $token->[4];
2367: } elsif ($target eq 'tex') {
2368: $Apache::londefdef::TD_redirection = 1;
2369: &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
2370: }
2371: return $currentstring;
2372: }
2373:
2374: sub tag_check {
2375: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2376: my @ar=@$parstack;
2377: for (my $i=$#ar-1;$i>=0;$i--) {
2378: if (lc($$tagstack[$i]) eq $good_tag) {
2379: &start_td_tex($parstack,$parser,$safeeval);
2380: last;
2381: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2382: splice @ar, $i+1;
2383: &end_td_tex(\@ar,$parser,$safeeval);
2384: &start_td_tex($parstack,$parser,$safeeval);
2385: last;
2386: }
2387: }
2388: return '';
2389: }
2390:
2391: sub start_td_tex {
2392: my ($parstack,$parser,$safeeval) = @_;
2393: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2394: if ($alignchar eq '') {
2395: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2396: }
2397: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2398: $Apache::londefdef::table[-1]{'counter_columns'}++;
2399: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2400: if (defined $TeXwidth) {
2401: my $current_length=&recalc($TeXwidth);
2402: $current_length=~/(\d+\.?\d*)/;
2403: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2404: }
2405: &Apache::lonxml::startredirection();
2406: return '';
2407: }
2408:
2409: sub end_td_tex {
2410: my ($parstack,$parser,$safeeval) = @_;
2411: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2412: my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
2413: my $data = &Apache::lonxml::endredirection();
2414:
2415: # The rowspan array of the table indicates which cells are part of a span.
2416: # n indicates the start of a span set of n rows.
2417: # ^ indicates a cell that continues a span set.
2418: # _ indicates the cell is at the bottom of a span set.
2419: # If this and subsequent cells are part of a rowspan, we must
2420: # push along the row until we find one that is not.
2421:
2422: while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
2423: && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
2424: # Part of a span.
2425: push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
2426: $current_column++;
2427: }
2428: $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
2429:
2430:
2431: # Get the column and row spans.
2432: # Colspan can be done via \multicolumn if I can figure out the data structs.
2433:
2434: my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
2435: if (!$colspan) {
2436: $colspan = 1;
2437: }
2438:
2439: my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
2440: if (!$rowspan) {
2441: $rowspan = 1;
2442: }
2443:
2444:
2445:
2446: for (my $c = 0; $c < $colspan; $c++) {
2447: $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
2448: for (my $i = 1; $i < $rowspan; $i++) {
2449: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
2450: if ($i == ($rowspan-1)) {
2451: $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
2452: }
2453: }
2454: }
2455:
2456: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2457: if (defined $TeXwidth) {
2458: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2459: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2460: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2461: } else {
2462: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2463: my $garbage_data=$data;
2464: my $fwidth=0;
2465: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2466: my $current_length=&recalc($1);
2467: $current_length=~/(\d+\.?\d*)/;
2468: if ($fwidth<$1) {$fwidth=$1;}
2469: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2470: }
2471: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2472: my $current_length=$1;
2473: if ($fwidth<$current_length) {$fwidth=$current_length;}
2474: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2475: }
2476: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2477: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2478: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2479: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2480: } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
2481: my $garbage_data=$data;
2482: my $fwidth=0;
2483: while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
2484: my $current_length=&recalc($1);
2485: $current_length=~/(\d+\.?\d*)/;
2486: if ($fwidth<$1) {$fwidth=$1;}
2487: $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2488: }
2489: while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2490: my $current_length=&recalc($1);
2491: $current_length=~/(\d+\.?\d*)/;
2492: if ($fwidth<$1) {$fwidth=$1;}
2493: $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2494: }
2495: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2496: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2497: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2498: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2499: $data=~s/\\\\\s*$//;
2500: } else {
2501: $data=~s/^\s+(\S.*)/$1/;
2502: $data=~s/(.*\S)\s+$/$1/;
2503: $data=~s/(\s)+/$1/;
2504: my ($current_length,$min_length)=(0,0);
2505: if ($data=~/\\vskip/) {
2506: my $newdata=$data;
2507: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2508: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2509: foreach my $elementdata (@newdata) {
2510: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2511: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2512: my @words=split(/ /,$elementdata);
2513: foreach my $word (@words) {
2514: my $lengthword=2.5*&LATEX_length($word);
2515: if ($min_length<$lengthword) {$min_length=$lengthword;}
2516: }
2517: }
2518: } else {
2519: $current_length=2.5*&LATEX_length($data);
2520: my @words=split(/ /,$data);
2521: foreach my $word (@words) {
2522: my $lengthword=2*&LATEX_length($word);
2523: if ($min_length<$lengthword) {$min_length=$lengthword;}
2524: }
2525: }
2526: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2527: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2528: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2529: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2530: }
2531: }
2532: # Substitute all of the tables nested in this cell in their appropriate places.
2533:
2534:
2535: my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
2536: for (my $in=0; $in<=$nested_count; $in++) {
2537: my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
2538: $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
2539: # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2540: $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
2541:
2542: }
2543: # Should be be killing off the 'include' elements as they're used up?
2544:
2545: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2546:
2547:
2548:
2549:
2550: # the colspan array will indicate how many columns will be spanned by this
2551: # cell..this requires that counter_columns also be adjusted accordingly
2552: # so that the next bunch of text goes in the right cell. Note that since
2553: # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
2554: #
2555:
2556: $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
2557: for (my $i = 0; $i < ($colspan -1); $i++) {
2558: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
2559: }
2560: for (my $r = 0; $r < $rowspan; $r++) {
2561: $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
2562: # Put empty text in spanned cols.
2563:
2564: }
2565:
2566:
2567:
2568: return '';
2569: }
2570:
2571: sub end_td {
2572: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2573: my $currentstring = '';
2574: if ($target eq 'web' || $target eq 'webgrade') {
2575: $currentstring = $token->[2];
2576: } elsif ($target eq 'tex') {
2577: $Apache::londefdef::TD_redirection =0;
2578: &end_td_tex($parstack,$parser,$safeeval);
2579: }
2580: return $currentstring;
2581: }
2582:
2583: #-- <th> tag (end tag optional)
2584: sub start_th {
2585: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2586: my $currentstring = '';
2587: if ($target eq 'web' || $target eq 'webgrade') {
2588: $currentstring = $token->[4];
2589: } elsif ($target eq 'tex') {
2590: $Apache::londefdef::TD_redirection = 1;
2591: &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
2592: }
2593: return $currentstring;
2594: }
2595:
2596: sub tagg_check {
2597: my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
2598: my @ar=@$parstack;
2599: for (my $i=$#ar-1;$i>=0;$i--) {
2600: if (lc($$tagstack[$i]) eq $good_tag) {
2601: &start_th_tex($parstack,$parser,$safeeval);
2602: last;
2603: } elsif (lc($$tagstack[$i]) eq $bad_tag) {
2604: splice @ar, $i+1;
2605: &end_th_tex(\@ar,$parser,$safeeval);
2606: &start_th_tex($parstack,$parser,$safeeval);
2607: last;
2608: }
2609: }
2610: return '';
2611: }
2612:
2613: sub start_th_tex {
2614: my ($parstack,$parser,$safeeval) = @_;
2615: my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
2616: if ($alignchar eq '') {
2617: $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
2618: }
2619: push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
2620: $Apache::londefdef::table[-1]{'counter_columns'}++;
2621: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2622: if (defined $TeXwidth) {
2623: my $current_length=&recalc($TeXwidth);
2624: $current_length=~/(\d+\.?\d*)/;
2625: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
2626: }
2627: &Apache::lonxml::startredirection();
2628: return '';
2629: }
2630:
2631: sub end_th_tex {
2632: my ($parstack,$parser,$safeeval) = @_;
2633: my $current_row = $Apache::londefdef::table[-1]{'row_number'};
2634: my $data=&Apache::lonxml::endredirection();
2635: my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
2636: if (defined $TeXwidth) {
2637: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2638: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2639: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2640: } else {
2641: if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
2642: my $garbage_data=$data;
2643: my $fwidth=0;
2644: while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
2645: my $current_length=&recalc($1);
2646: $current_length=~/(\d+\.?\d*)/;
2647: if ($fwidth<$1) {$fwidth=$1;}
2648: $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
2649: }
2650: while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
2651: my $current_length=$1;
2652: if ($fwidth<$current_length) {$fwidth=$current_length;}
2653: $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
2654: }
2655: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2656: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
2657: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2658: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2659: } else {
2660: $data=~s/^\s+(\S.*)/$1/;
2661: $data=~s/(.*\S)\s+$/$1/;
2662: $data=~s/(\s)+/$1/;
2663: my ($current_length,$min_length)=(0,0);
2664: if ($data=~/\\vskip/) {
2665: my $newdata=$data;
2666: $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
2667: my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
2668: foreach my $elementdata (@newdata) {
2669: my $lengthnewdata=2.5*&LATEX_length($elementdata);
2670: if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
2671: my @words=split(/ /,$elementdata);
2672: foreach my $word (@words) {
2673: my $lengthword=2.5*&LATEX_length($word);
2674: if ($min_length<$lengthword) {$min_length=$lengthword;}
2675: }
2676: }
2677: } else {
2678: $current_length=2.5*&LATEX_length($data);
2679: my @words=split(/ /,$data);
2680: foreach my $word (@words) {
2681: my $lengthword=2*&LATEX_length($word);
2682: if ($min_length<$lengthword) {$min_length=$lengthword;}
2683: }
2684: }
2685: push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2686: push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
2687: push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
2688: push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
2689: }
2690: }
2691: for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
2692: $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
2693: }
2694: #make data bold
2695: $data='\textbf{'.$data.'}';
2696: push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
2697: return'';
2698: }
2699:
2700: sub end_th {
2701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2702: my $currentstring = &end_p(); # Close any open <p> in the row.
2703: if ($target eq 'web' || $target eq 'webgrade') {
2704: $currentstring .= $token->[2];
2705: } elsif ($target eq 'tex') {
2706: $Apache::londefdef::TD_redirection =0;
2707: &end_th_tex($parstack,$parser,$safeeval);
2708: }
2709: return $currentstring;
2710: }
2711:
2712: #-- <img> tag (end tag forbidden)
2713: #
2714: # Render the <IMG> tag.
2715: # <IMG> has the following attributes (in addition to the
2716: # standard HTML ones:
2717: # TeXwrap - Governs how the tex target will try to wrap text around
2718: # horizontally aligned images.
2719: # TeXwidth - The width of the image when rendered for print (mm).
2720: # TeXheight - The height of the image when rendered for print (mm)
2721: # (Note there seems to also be support for this as a % of page size)
2722: #
2723: sub start_img {
2724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
2725: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
2726: undef,1);
2727: if (! $src &&
2728: ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
2729: ) {
2730: my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
2731: return '';
2732: }
2733: &Apache::lonxml::extlink($src);
2734: my $currentstring = '';
2735: my $scaling = .3;
2736:
2737: # Render unto browsers that which are the browser's...
2738:
2739: if ($target eq 'web' || $target eq 'webgrade') {
2740: if ($env{'browser.imagesuppress'} ne 'on') {
2741: my $enc = ('yes' eq
2742: lc(&Apache::lonxml::get_param('encrypturl',$parstack,
2743: $safeeval)));
2744: $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
2745: $enc);
2746: } else {
2747: my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
2748: undef,1);
2749: if (!$alttag) {
2750: $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2751: $src);
2752: }
2753: $currentstring.='[IMAGE: '.$alttag.']';
2754: }
2755:
2756: # and render unto TeX that which is LaTeX
2757:
2758: } elsif ($target eq 'tex') {
2759: #
2760: # The alignment will require some superstructure to be put around
2761: # the \includegraphics stuff. At present we can only partially
2762: # simulate the alignments offered by html.
2763: #
2764: #
2765: my $align = lc(&Apache::lonxml::get_param('align',
2766: $parstack,
2767: $safeeval,
2768: undef,1));
2769: if(!$align) {
2770: $align = "bottom"; # This is html's default so it's ours too.
2771: }
2772: #
2773: &Apache::lonxml::debug("Alignemnt = $align");
2774: # LaTeX's image/text wrapping is really bad since it wants to
2775: # make figures float.
2776: # The user has the optional parameter (applicable only to l/r
2777: # alignment to use the picins/parpic directive to get wrapped text
2778: # this is also imperfect.. that's why we give them a choice...
2779: # so they can't yell at us for our choice.
2780: #
2781: my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
2782: $parstack,
2783: $safeeval,
2784: undef,0);
2785: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
2786: if(!$latex_rendering) {
2787: $latex_rendering = "texwrap";
2788: }
2789: # using texwrap inside a table does not work. So, if after all of this,
2790: # texwrap is on, we turn it off if we detect we're in a table:
2791: #
2792: if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
2793: $latex_rendering = 'parpic';
2794: }
2795:
2796: # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
2797:
2798: #if original gif/jpg/png file exist do following:
2799: my $origsrc=$src;
2800: my ($path,$file) = &get_eps_image($src);
2801: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
2802: &Apache::lonxml::debug("path = $path file = $file src = $src");
2803: if (-e $src) {
2804: &Apache::lonxml::debug("$src exists");
2805: my ($height_param,$width_param)=
2806: &image_size($origsrc,0.3,$parstack,$safeeval);
2807: my $destpath = $path;
2808: $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
2809: my $destfile = $file;
2810: $destfile =~ s/ /\_/g;
2811: my $size;
2812: if ($width_param) { $size.='width='.$width_param.' mm,'; }
2813: if ($height_param) { $size.='height='.$height_param.' mm]'; }
2814: $size='['.$size;
2815: $size=~s/,$/]/;
2816: $currentstring .= '\graphicspath{{'.$destpath.'}}'
2817: .'\includegraphics'.$size.'{'.$destfile.'} ';
2818:
2819: # If there's an alignment specification we need to honor it here.
2820: # For the horizontal alignments, we will also honor the
2821: # value of the latex specfication. The default is parbox,
2822: # and that's used for illegal values too.
2823: #
2824: # Even though we set a default alignment value, the user
2825: # could have given us an illegal value. In that case we
2826: # just use the default alignment of bottom..
2827: if ($align eq "top") {
2828: $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
2829: } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
2830: my $offset = $height_param/2;
2831: $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
2832: } elsif ($align eq "left") {
2833: if ($latex_rendering eq "parpic") {
2834: $currentstring = '\parpic[l]{'.$currentstring.'}';
2835: } else { # wrapfig render
2836: $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}'
2837: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2838: }
2839: } elsif ($align eq "right") {
2840: if ($latex_rendering eq "parpic") {
2841: $currentstring = '\parpic[r]{'.$currentstring.'}';
2842: } else { # wrapfig rendering
2843: $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}'
2844: .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
2845:
2846: }
2847: } else { # Bottom is also default.
2848: # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
2849: }
2850: } else {
2851: &Apache::lonxml::debug("$src does not exist");
2852: #original image file doesn't exist so check the alt attribute
2853: my $alt =
2854: &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
2855: unless ($alt) {
2856: $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
2857: }
2858:
2859: if ($alt) { $currentstring .= ' '.$alt.' '; }
2860: }
2861:
2862: # And here's where the semi-quote breaks down: allow the user
2863: # to edit the beast as well by rendering the problem for edit:
2864: } elsif ($target eq 'edit') {
2865: $currentstring .=&Apache::edit::tag_start($target,$token);
2866: $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
2867: &Apache::edit::browse('src',undef,'alt').' '.
2868: &Apache::edit::search('src',undef,'alt').'<br />';
2869: $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
2870: $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
2871: $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
2872: $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
2873: $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
2874: $currentstring .=&Apache::edit::select_arg('Alignment:','align',
2875: ['','bottom','middle','top','left','right'],$token,5);
2876: $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
2877: ['', 'parbox', 'parpic'], $token, 2);
2878: $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
2879: ['no','yes'], $token, 2);
2880: $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
2881: my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
2882: my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
2883: my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
2884: my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
2885:
2886:
2887: $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
2888: if ($width) { $currentstring.=' width="'.$width.'" '; }
2889: if ($height) { $currentstring.=' height="'.$height.'" '; }
2890: $currentstring .= ' />';
2891: } elsif ($target eq 'modified') {
2892: my ($osrc,$owidth,$oheight)=
2893: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2894: my $ctag=&Apache::edit::get_new_args($token,$parstack,
2895: $safeeval,'src','alt','align',
2896: 'TeXwidth','TeXheight', 'TeXwrap',
2897: 'width','height','encrypturl');
2898: my ($nsrc,$nwidth,$nheight)=
2899: ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
2900: my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
2901: &image_replication($loc);
2902: my ($iwidth,$iheight);
2903: if (-e $loc) {
2904: my $image = Image::Magick->new;
2905: $image->Read($loc);
2906: ($iwidth, $iheight) = ($image->Get('width'),
2907: $image->Get('height'));
2908: }
2909: if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
2910: # changed image or no size specified,
2911: # if they didn't explicitly change the
2912: # width or height use the ones from the image
2913: if ($iwidth && $iheight) {
2914: if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
2915: $token->[2]{'width'} = $iwidth;$ctag=1;
2916: }
2917: if ($oheight == $nheight || (!$nwidth && !$nheight)) {
2918: $token->[2]{'height'}=$iheight;$ctag=1;
2919: }
2920: }
2921: }
2922: my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
2923: # if we don't have a width or height
2924: if ($iwidth && $cwidth && !$cheight) {
2925: $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
2926: }
2927: if ($iheight && $cheight && !$cwidth) {
2928: $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
2929: }
2930: if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
2931: }
2932:
2933: return $currentstring;
2934: }
2935:
2936: sub end_img {
2937: my ($target,$token) = @_;
2938: my $currentstring = '';
2939: if ($target eq 'web' || $target eq 'webgrade') {
2940: $currentstring = $token->[2];
2941: } elsif ($target eq 'tex') {
2942: $currentstring = '';
2943: }
2944: return $currentstring;
2945: }
2946:
2947: #-- <applet> tag (end tag required)
2948: sub start_applet {
2949: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
2950:
2951: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
2952: &Apache::lonxml::extlink($code);
2953: my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
2954: undef,1);
2955: &Apache::lonxml::extlink($archive);
2956: my $currentstring = '';
2957: if ($target eq 'web' || $target eq 'webgrade') {
2958: if ($env{'browser.appletsuppress'} ne 'on') {
2959: $currentstring = &Apache::lonenc::encrypt_ref($token,
2960: {'code'=>$code,
2961: 'archive'=>$archive}
2962: );
2963: } else {
2964: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2965: $safeeval,undef,1);
2966: unless ($alttag) {
2967: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2968: $code);
2969: }
2970: $currentstring='[APPLET: '.$alttag.']';
2971: }
2972: } elsif ($target eq 'tex') {
2973: my $alttag= &Apache::lonxml::get_param('alt',$parstack,
2974: $safeeval,undef,1);
2975: unless ($alttag) {
2976: my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
2977: undef,1);
2978: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
2979: $code);
2980: }
2981: $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
2982: '.}\end{center}';
2983: }
2984: return $currentstring;
2985: }
2986:
2987: sub end_applet {
2988: my ($target,$token) = @_;
2989: my $currentstring = '';
2990: if ($target eq 'web' || $target eq 'webgrade') {
2991: $currentstring = $token->[2];
2992: } elsif ($target eq 'tex') {
2993: }
2994: return $currentstring;
2995: }
2996:
2997: #-- <embed> tag (end tag optional/required)
2998: sub start_embed {
2999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3000: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3001: &Apache::lonxml::extlink($src);
3002: my $currentstring = '';
3003: if ($target eq 'web' || $target eq 'webgrade') {
3004: if ($env{'browser.embedsuppress'} ne 'on') {
3005: $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
3006: } else {
3007: my $alttag=&Apache::lonxml::get_param
3008: ('alt',$parstack,$safeeval,undef,1);
3009: unless ($alttag) {
3010: $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
3011: }
3012: $currentstring='[EMBED: '.$alttag.']';
3013: }
3014: } elsif ($target eq 'tex') {
3015: }
3016: return $currentstring;
3017: }
3018:
3019: sub end_embed {
3020: my ($target,$token) = @_;
3021: my $currentstring = '';
3022: if ($target eq 'web' || $target eq 'webgrade') {
3023: $currentstring = $token->[2];
3024: } elsif ($target eq 'tex') {
3025: }
3026: return $currentstring;
3027: }
3028:
3029: #-- <param> tag (end tag forbidden)
3030: sub start_param {
3031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3032: if (&Apache::lonxml::get_param('name',$parstack,
3033: $safeeval,undef,1)=~/^cabbase$/i) {
3034: my $value=&Apache::lonxml::get_param('value',$parstack,
3035: $safeeval,undef,1);
3036: &Apache::lonxml::extlink($value);
3037: }
3038:
3039: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3040: &Apache::lonxml::extlink($src);
3041: my $currentstring = '';
3042: if ($target eq 'web' || $target eq 'webgrade') {
3043: my %toconvert;
3044: my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3045: if ($src) { $toconvert{'src'}= $src; }
3046: my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
3047: undef,1);
3048: if ($name=~/^cabbase$/i) {
3049: $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
3050: $safeeval,undef,1);
3051: }
3052: $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
3053: } elsif ($target eq 'tex') {
3054: }
3055: return $currentstring;
3056: }
3057:
3058: sub end_param {
3059: my ($target,$token) = @_;
3060: my $currentstring = '';
3061: if ($target eq 'web' || $target eq 'webgrade') {
3062: $currentstring = $token->[2];
3063: } elsif ($target eq 'tex') {
3064: }
3065: return $currentstring;
3066: }
3067:
3068: #-- <allow> tag
3069: sub start_allow {
3070: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3071: my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
3072: &Apache::lonxml::extlink($src);
3073:
3074: if ($target eq 'tex') { &image_replication($src); }
3075: my $result;
3076: if ($target eq 'edit') {
3077: $result .=&Apache::edit::tag_start($target,$token);
3078: $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
3079: $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
3080: } elsif ($target eq 'modified') {
3081: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
3082: $safeeval,'src');
3083: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
3084: }
3085: return $result;
3086: }
3087:
3088: sub end_allow {
3089: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3090: if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
3091: return '';
3092: }
3093:
3094: #-- Frames (end tag required)
3095: #-- <frameset>
3096: sub start_frameset {
3097: my ($target,$token) = @_;
3098: my $currentstring = ''; # Close any pending para.
3099: if ($target eq 'web' || $target eq 'webgrade') {
3100: $currentstring =
3101: &Apache::loncommon::start_page($Apache::londefdef::title,
3102: $Apache::londefdef::head,
3103: {'add_entries' => $token->[2],
3104: 'no_title' => 1,
3105: 'force_register' => 1,
3106: 'frameset' => 1,});
3107:
3108: }
3109: return $currentstring;
3110: }
3111:
3112: sub end_frameset {
3113: my ($target,$token) = @_;
3114: my $currentstring = '';
3115: if ($target eq 'web' || $target eq 'webgrade') {
3116: $currentstring = $token->[2];
3117: }
3118: return $currentstring;
3119: }
3120:
3121: #-- <xmp> (end tag required)
3122: sub start_xmp {
3123: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3124: my $currentstring = '';
3125: if ($target eq 'web' || $target eq 'webgrade') {
3126: $currentstring .= $token->[4];
3127: } elsif ($target eq 'tex') {
3128: $currentstring .= '\begin{verbatim}';
3129: }
3130: return $currentstring;
3131: }
3132:
3133: sub end_xmp {
3134: my ($target,$token) = @_;
3135: my $currentstring = '';
3136: if ($target eq 'web' || $target eq 'webgrade') {
3137: $currentstring .= $token->[2];
3138: } elsif ($target eq 'tex') {
3139: $currentstring .= '\end{verbatim}';
3140: }
3141: return $currentstring;
3142: }
3143:
3144: #-- <pre> (end tag required)
3145: sub start_pre {
3146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3147: my $currentstring = &end_p(); # close off pending <p>
3148: if ($target eq 'web' || $target eq 'webgrade') {
3149: $currentstring .= $token->[4];
3150: } elsif ($target eq 'tex') {
3151: $currentstring .= '\begin{verbatim}';
3152: &Apache::lonxml::disable_LaTeX_substitutions();
3153: }
3154: return $currentstring;
3155: }
3156:
3157: sub end_pre {
3158: my ($target,$token) = @_;
3159: my $currentstring = '';
3160: if ($target eq 'web' || $target eq 'webgrade') {
3161: $currentstring .= $token->[2];
3162: } elsif ($target eq 'tex') {
3163: $currentstring .= '\end{verbatim}';
3164: &Apache::lonxml::enable_LaTeX_substitutions();
3165: }
3166: return $currentstring;
3167: }
3168:
3169: #-- <insert>
3170: sub start_insert {
3171: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3172: my $currentstring = '';
3173: if ($target eq 'web' || $target eq 'webgrade') {
3174: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3175: $currentstring .= '<b>'.$display.'</b>';;
3176: }
3177: return $currentstring;
3178: }
3179:
3180: sub end_insert {
3181: my ($target,$token) = @_;
3182: my $currentstring = '';
3183: if ($target eq 'web' || $target eq 'webgrade') {
3184: $currentstring .= '';
3185: }
3186: return $currentstring;
3187: }
3188:
3189: #-- <externallink>
3190: sub start_externallink {
3191: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3192: my $currentstring = '';
3193: if ($target eq 'web' || $target eq 'webgrade') {
3194: my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
3195: $currentstring .= '<b>'.$display.'</b>';;
3196: }
3197: return $currentstring;
3198: }
3199:
3200: sub end_externallink {
3201: my ($target,$token) = @_;
3202: my $currentstring = '';
3203: if ($target eq 'web' || $target eq 'webgrade') {
3204: $currentstring .= '';
3205: }
3206: return $currentstring;
3207: }
3208:
3209: #-- <blankspace heigth="">
3210: sub start_blankspace {
3211: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3212: my $currentstring = &end_p(); # closes off any unclosed <p>
3213: if ($target eq 'tex') {
3214: my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
3215: $currentstring .= '\vskip '.$howmuch.' ';
3216: }
3217: return $currentstring;
3218: }
3219:
3220: sub end_blankspace {
3221: my ($target,$token) = @_;
3222: my $currentstring = '';
3223: if ($target eq 'tex') {
3224: $currentstring .= '';
3225: }
3226: return $currentstring;
3227: }
3228:
3229: #-- <abbr> tag (end tag required)
3230: sub start_abbr {
3231: my ($target,$token) = @_;
3232: my $currentstring = '';
3233: if ($target eq 'web' || $target eq 'webgrade') {
3234: $currentstring = $token->[4];
3235: }
3236: return $currentstring;
3237: }
3238:
3239: sub end_abbr {
3240: my ($target,$token) = @_;
3241: my $currentstring = '';
3242: if ($target eq 'web' || $target eq 'webgrade') {
3243: $currentstring = $token->[2];
3244: }
3245: return $currentstring;
3246: }
3247:
3248: #-- <acronym> tag (end tag required)
3249: sub start_acronym {
3250: my ($target,$token) = @_;
3251: my $currentstring = '';
3252: if ($target eq 'web' || $target eq 'webgrade') {
3253: $currentstring = $token->[4];
3254: }
3255: return $currentstring;
3256: }
3257:
3258: sub end_acronym {
3259: my ($target,$token) = @_;
3260: my $currentstring = '';
3261: if ($target eq 'web' || $target eq 'webgrade') {
3262: $currentstring = $token->[2];
3263: }
3264: return $currentstring;
3265: }
3266:
3267: #-- <area> tag (end tag forbidden)
3268: sub start_area {
3269: my ($target,$token) = @_;
3270: my $currentstring = '';
3271: if ($target eq 'web' || $target eq 'webgrade') {
3272: $currentstring = $token->[4];
3273: }
3274: return $currentstring;
3275: }
3276:
3277: sub end_area {
3278: my ($target,$token) = @_;
3279: my $currentstring = '';
3280: if ($target eq 'web' || $target eq 'webgrade') {
3281: $currentstring = $token->[2];
3282: }
3283: return $currentstring;
3284: }
3285:
3286: #-- <base> tag (end tag forbidden)
3287: sub start_base {
3288: my ($target,$token) = @_;
3289: my $currentstring = '';
3290: if ($target eq 'web' || $target eq 'webgrade') {
3291: $currentstring = $token->[4];
3292: }
3293: return $currentstring;
3294: }
3295:
3296: sub end_base {
3297: my ($target,$token) = @_;
3298: my $currentstring = '';
3299: if ($target eq 'web' || $target eq 'webgrade') {
3300: $currentstring = $token->[2];
3301: }
3302: return $currentstring;
3303: }
3304:
3305: #-- <bdo> tag (end tag required)
3306: sub start_bdo {
3307: my ($target,$token) = @_;
3308: my $currentstring = '';
3309: if ($target eq 'web' || $target eq 'webgrade') {
3310: $currentstring = $token->[4];
3311: }
3312: return $currentstring;
3313: }
3314:
3315: sub end_bdo {
3316: my ($target,$token) = @_;
3317: my $currentstring = '';
3318: if ($target eq 'web' || $target eq 'webgrade') {
3319: $currentstring = $token->[2];
3320: }
3321: return $currentstring;
3322: }
3323:
3324: #-- <bgsound> tag (end tag optional)
3325: sub start_bgsound {
3326: my ($target,$token) = @_;
3327: my $currentstring = '';
3328: if ($target eq 'web' || $target eq 'webgrade') {
3329: $currentstring = $token->[4];
3330: }
3331: return $currentstring;
3332: }
3333:
3334: sub end_bgsound {
3335: my ($target,$token) = @_;
3336: my $currentstring = '';
3337: if ($target eq 'web' || $target eq 'webgrade') {
3338: $currentstring = $token->[2];
3339: }
3340: return $currentstring;
3341: }
3342:
3343: #-- <blink> tag (end tag required)
3344: sub start_blink {
3345: my ($target,$token) = @_;
3346: my $currentstring = '';
3347: if ($target eq 'web' || $target eq 'webgrade') {
3348: $currentstring = $token->[4];
3349: }
3350: return $currentstring;
3351: }
3352:
3353: sub end_blink {
3354: my ($target,$token) = @_;
3355: my $currentstring = '';
3356: if ($target eq 'web' || $target eq 'webgrade') {
3357: $currentstring = $token->[2];
3358: }
3359: return $currentstring;
3360: }
3361:
3362: #-- <blockquote> tag (end tag required)
3363: sub start_blockquote {
3364: my ($target,$token) = @_;
3365: my $currentstring = &end_p(); # Close any unclosed <p>
3366: if ($target eq 'web' || $target eq 'webgrade') {
3367: $currentstring .= $token->[4];
3368: }
3369: return $currentstring;
3370: }
3371:
3372: sub end_blockquote {
3373: my ($target,$token) = @_;
3374: my $currentstring = '';
3375: if ($target eq 'web' || $target eq 'webgrade') {
3376: $currentstring = $token->[2];
3377: }
3378: return $currentstring;
3379: }
3380:
3381: #-- <button> tag (end tag required)
3382: sub start_button {
3383: my ($target,$token) = @_;
3384: my $currentstring = '';
3385: if ($target eq 'web' || $target eq 'webgrade') {
3386: $currentstring = $token->[4];
3387: }
3388: return $currentstring;
3389: }
3390:
3391: sub end_button {
3392: my ($target,$token) = @_;
3393: my $currentstring = '';
3394: if ($target eq 'web' || $target eq 'webgrade') {
3395: $currentstring = $token->[2];
3396: }
3397: return $currentstring;
3398: }
3399:
3400: #-- <caption> tag (end tag required)
3401: sub start_caption {
3402: my ($target,$token) = @_;
3403: my $currentstring = '';
3404: if ($target eq 'web' || $target eq 'webgrade') {
3405: $currentstring = $token->[4];
3406: }
3407: return $currentstring;
3408: }
3409:
3410: sub end_caption {
3411: my ($target,$token) = @_;
3412: my $currentstring = '';
3413: if ($target eq 'web' || $target eq 'webgrade') {
3414: $currentstring = $token->[2];
3415: }
3416: return $currentstring;
3417: }
3418:
3419: #-- <col> tag (end tag forbdden)
3420: sub start_col {
3421: my ($target,$token) = @_;
3422: my $currentstring = '';
3423: if ($target eq 'web' || $target eq 'webgrade') {
3424: $currentstring = $token->[4];
3425: }
3426: return $currentstring;
3427: }
3428:
3429: sub end_col {
3430: my ($target,$token) = @_;
3431: my $currentstring = '';
3432: if ($target eq 'web' || $target eq 'webgrade') {
3433: $currentstring = $token->[2];
3434: }
3435: return $currentstring;
3436: }
3437:
3438: #-- <colgroup> tag (end tag optional)
3439: sub start_colgroup {
3440: my ($target,$token) = @_;
3441: my $currentstring = '';
3442: if ($target eq 'web' || $target eq 'webgrade') {
3443: $currentstring = $token->[4];
3444: }
3445: return $currentstring;
3446: }
3447:
3448: sub end_colgroup {
3449: my ($target,$token) = @_;
3450: my $currentstring = '';
3451: if ($target eq 'web' || $target eq 'webgrade') {
3452: $currentstring = $token->[2];
3453: }
3454: return $currentstring;
3455: }
3456:
3457: #-- <del> tag (end tag required)
3458: sub start_del {
3459: my ($target,$token) = @_;
3460: my $currentstring = '';
3461: if ($target eq 'web' || $target eq 'webgrade') {
3462: $currentstring = $token->[4];
3463: }
3464: return $currentstring;
3465: }
3466:
3467: sub end_del {
3468: my ($target,$token) = @_;
3469: my $currentstring = '';
3470: if ($target eq 'web' || $target eq 'webgrade') {
3471: $currentstring = $token->[2];
3472: }
3473: return $currentstring;
3474: }
3475:
3476: #-- <fieldset> tag (end tag required)
3477: sub start_fieldset {
3478: my ($target,$token) = @_;
3479: my $currentstring = '';
3480: if ($target eq 'web' || $target eq 'webgrade') {
3481: $currentstring = $token->[4];
3482: }
3483: return $currentstring;
3484: }
3485:
3486: sub end_fieldset {
3487: my ($target,$token) = @_;
3488: my $currentstring = '';
3489: if ($target eq 'web' || $target eq 'webgrade') {
3490: $currentstring = $token->[2];
3491: }
3492: return $currentstring;
3493: }
3494:
3495: #-- <frame> tag (end tag forbidden)
3496: sub start_frame {
3497: my ($target,$token) = @_;
3498: my $currentstring = '';
3499: if ($target eq 'web' || $target eq 'webgrade') {
3500: $currentstring = $token->[4];
3501: }
3502: return $currentstring;
3503: }
3504:
3505: sub end_frame {
3506: my ($target,$token) = @_;
3507: my $currentstring = '';
3508: if ($target eq 'web' || $target eq 'webgrade') {
3509: $currentstring = $token->[2];
3510: }
3511: return $currentstring;
3512: }
3513:
3514: #-- <iframe> tag (end tag required)
3515: sub start_iframe {
3516: my ($target,$token) = @_;
3517: my $currentstring = '';
3518: if ($target eq 'web' || $target eq 'webgrade') {
3519: $currentstring = $token->[4];
3520: }
3521: return $currentstring;
3522: }
3523:
3524: sub end_iframe {
3525: my ($target,$token) = @_;
3526: my $currentstring = '';
3527: if ($target eq 'web' || $target eq 'webgrade') {
3528: $currentstring = $token->[2];
3529: }
3530: return $currentstring;
3531: }
3532:
3533: #-- <ins> tag (end tag required)
3534: sub start_ins {
3535: my ($target,$token) = @_;
3536: my $currentstring = '';
3537: if ($target eq 'web' || $target eq 'webgrade') {
3538: $currentstring = $token->[4];
3539: }
3540: return $currentstring;
3541: }
3542:
3543: sub end_ins {
3544: my ($target,$token) = @_;
3545: my $currentstring = '';
3546: if ($target eq 'web' || $target eq 'webgrade') {
3547: $currentstring = $token->[2];
3548: }
3549: return $currentstring;
3550: }
3551:
3552: #-- <isindex> tag (end tag forbidden)
3553: sub start_isindex {
3554: my ($target,$token) = @_;
3555: my $currentstring = '';
3556: if ($target eq 'web' || $target eq 'webgrade') {
3557: $currentstring = $token->[4];
3558: }
3559: return $currentstring;
3560: }
3561:
3562: sub end_isindex {
3563: my ($target,$token) = @_;
3564: my $currentstring = '';
3565: if ($target eq 'web' || $target eq 'webgrade') {
3566: $currentstring = $token->[2];
3567: }
3568: return $currentstring;
3569: }
3570:
3571: #-- <keygen> tag (end tag forbidden)
3572: sub start_keygen {
3573: my ($target,$token) = @_;
3574: my $currentstring = '';
3575: if ($target eq 'web' || $target eq 'webgrade') {
3576: $currentstring = $token->[4];
3577: }
3578: return $currentstring;
3579: }
3580:
3581: sub end_keygen {
3582: my ($target,$token) = @_;
3583: my $currentstring = '';
3584: if ($target eq 'web' || $target eq 'webgrade') {
3585: $currentstring = $token->[2];
3586: }
3587: return $currentstring;
3588: }
3589:
3590: #-- <label> tag
3591: sub start_label {
3592: my ($target,$token) = @_;
3593: my $currentstring = '';
3594: if ($target eq 'web' || $target eq 'webgrade') {
3595: $currentstring = $token->[4];
3596: }
3597: return $currentstring;
3598: }
3599:
3600: sub end_label {
3601: my ($target,$token) = @_;
3602: my $currentstring = '';
3603: if ($target eq 'web' || $target eq 'webgrade') {
3604: $currentstring = $token->[2];
3605: }
3606: return $currentstring;
3607: }
3608:
3609: #-- <layer> tag (end tag required)
3610: sub start_layer {
3611: my ($target,$token) = @_;
3612: my $currentstring = '';
3613: if ($target eq 'web' || $target eq 'webgrade') {
3614: $currentstring = $token->[4];
3615: }
3616: return $currentstring;
3617: }
3618:
3619: sub end_layer {
3620: my ($target,$token) = @_;
3621: my $currentstring = '';
3622: if ($target eq 'web' || $target eq 'webgrade') {
3623: $currentstring = $token->[2];
3624: }
3625: return $currentstring;
3626: }
3627:
3628: #-- <legend> tag (end tag required)
3629: sub start_legend {
3630: my ($target,$token) = @_;
3631: my $currentstring = '';
3632: if ($target eq 'web' || $target eq 'webgrade') {
3633: $currentstring = $token->[4];
3634: }
3635: return $currentstring;
3636: }
3637:
3638: sub end_legend {
3639: my ($target,$token) = @_;
3640: my $currentstring = '';
3641: if ($target eq 'web' || $target eq 'webgrade') {
3642: $currentstring = $token->[2];
3643: }
3644: return $currentstring;
3645: }
3646:
3647: #-- <link> tag (end tag forbidden)
3648: sub start_link {
3649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
3650: my $currentstring = '';
3651: if ($target eq 'web' || $target eq 'webgrade') {
3652: my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
3653: undef,1);
3654: &Apache::lonxml::extlink($href);
3655: $currentstring = $token->[4];
3656: }
3657: return $currentstring;
3658: }
3659:
3660: sub end_link {
3661: my ($target,$token) = @_;
3662: my $currentstring = '';
3663: if ($target eq 'web' || $target eq 'webgrade') {
3664: $currentstring = $token->[2];
3665: }
3666: return $currentstring;
3667: }
3668:
3669: #-- <marquee> tag (end tag optional)
3670: sub start_marquee {
3671: my ($target,$token) = @_;
3672: my $currentstring = '';
3673: if ($target eq 'web' || $target eq 'webgrade') {
3674: $currentstring = $token->[4];
3675: }
3676: return $currentstring;
3677: }
3678:
3679: sub end_marquee {
3680: my ($target,$token) = @_;
3681: my $currentstring = '';
3682: if ($target eq 'web' || $target eq 'webgrade') {
3683: $currentstring = $token->[2];
3684: }
3685: return $currentstring;
3686: }
3687:
3688: #-- <multicol> tag (end tag required)
3689: sub start_multicol {
3690: my ($target,$token) = @_;
3691: my $currentstring = &end_p(); # Close any pending <p>
3692: if ($target eq 'web' || $target eq 'webgrade') {
3693: $currentstring .= $token->[4];
3694: }
3695: return $currentstring;
3696: }
3697:
3698: sub end_multicol {
3699: my ($target,$token) = @_;
3700: my $currentstring = '';
3701: if ($target eq 'web' || $target eq 'webgrade') {
3702: $currentstring = $token->[2];
3703: }
3704: return $currentstring;
3705: }
3706:
3707: #-- <nobr> tag (end tag required)
3708: sub start_nobr {
3709: my ($target,$token) = @_;
3710: my $currentstring = '';
3711: if ($target eq 'web' || $target eq 'webgrade') {
3712: $currentstring = $token->[4];
3713: } elsif ($target eq 'tex') {
3714: $currentstring='\mbox{';
3715: }
3716: return $currentstring;
3717: }
3718:
3719: sub end_nobr {
3720: my ($target,$token) = @_;
3721: my $currentstring = '';
3722: if ($target eq 'web' || $target eq 'webgrade') {
3723: $currentstring = $token->[2];
3724: } elsif ($target eq 'tex') {
3725: $currentstring='}';
3726: }
3727: return $currentstring;
3728: }
3729:
3730: #-- <noembed> tag (end tag required)
3731: sub start_noembed {
3732: my ($target,$token) = @_;
3733: my $currentstring = '';
3734: if ($target eq 'web' || $target eq 'webgrade') {
3735: $currentstring = $token->[4];
3736: }
3737: return $currentstring;
3738: }
3739:
3740: sub end_noembed {
3741: my ($target,$token) = @_;
3742: my $currentstring = '';
3743: if ($target eq 'web' || $target eq 'webgrade') {
3744: $currentstring = $token->[2];
3745: }
3746: return $currentstring;
3747: }
3748:
3749: #-- <noframes> tag (end tag required)
3750: sub start_noframes {
3751: my ($target,$token) = @_;
3752: my $currentstring = '';
3753: if ($target eq 'web' || $target eq 'webgrade') {
3754: $currentstring = $token->[4];
3755: }
3756: return $currentstring;
3757: }
3758:
3759: sub end_noframes {
3760: my ($target,$token) = @_;
3761: my $currentstring = '';
3762: if ($target eq 'web' || $target eq 'webgrade') {
3763: $currentstring = $token->[2];
3764: }
3765: return $currentstring;
3766: }
3767:
3768: #-- <nolayer> tag (end tag required)
3769: sub start_nolayer {
3770: my ($target,$token) = @_;
3771: my $currentstring = '';
3772: if ($target eq 'web' || $target eq 'webgrade') {
3773: $currentstring = $token->[4];
3774: }
3775: return $currentstring;
3776: }
3777:
3778: sub end_nolayer {
3779: my ($target,$token) = @_;
3780: my $currentstring = '';
3781: if ($target eq 'web' || $target eq 'webgrade') {
3782: $currentstring = $token->[2];
3783: }
3784: return $currentstring;
3785: }
3786:
3787: #-- <noscript> tag (end tag required)
3788: sub start_noscript {
3789: my ($target,$token) = @_;
3790: my $currentstring = '';
3791: if ($target eq 'web' || $target eq 'webgrade') {
3792: $currentstring = $token->[4];
3793: }
3794: return $currentstring;
3795: }
3796:
3797: sub end_noscript {
3798: my ($target,$token) = @_;
3799: my $currentstring = '';
3800: if ($target eq 'web' || $target eq 'webgrade') {
3801: $currentstring = $token->[2];
3802: }
3803: return $currentstring;
3804: }
3805:
3806: #-- <object> tag (end tag required)
3807: sub start_object {
3808: my ($target,$token) = @_;
3809: my $currentstring = '';
3810: if ($target eq 'web' || $target eq 'webgrade') {
3811: $currentstring = $token->[4];
3812: }
3813: return $currentstring;
3814: }
3815:
3816: sub end_object {
3817: my ($target,$token) = @_;
3818: my $currentstring = '';
3819: if ($target eq 'web' || $target eq 'webgrade') {
3820: $currentstring = $token->[2];
3821: }
3822: return $currentstring;
3823: }
3824:
3825: #-- <optgroup> tag (end tag required)
3826: sub start_optgroup {
3827: my ($target,$token) = @_;
3828: my $currentstring = '';
3829: if ($target eq 'web' || $target eq 'webgrade') {
3830: $currentstring = $token->[4];
3831: }
3832: return $currentstring;
3833: }
3834:
3835: sub end_optgroup {
3836: my ($target,$token) = @_;
3837: my $currentstring = '';
3838: if ($target eq 'web' || $target eq 'webgrade') {
3839: $currentstring = $token->[2];
3840: }
3841: return $currentstring;
3842: }
3843:
3844: #-- <samp> tag (end tag required)
3845: sub start_samp {
3846: my ($target,$token) = @_;
3847: my $currentstring = '';
3848: if ($target eq 'web' || $target eq 'webgrade') {
3849: $currentstring = $token->[4];
3850: } elsif ($target eq 'tex') {
3851: $currentstring='\texttt{';
3852: }
3853: return $currentstring;
3854: }
3855:
3856: sub end_samp {
3857: my ($target,$token) = @_;
3858: my $currentstring = '';
3859: if ($target eq 'web' || $target eq 'webgrade') {
3860: $currentstring = $token->[2];
3861: } elsif ($target eq 'tex') {
3862: $currentstring='}';
3863: }
3864: return $currentstring;
3865: }
3866:
3867: #-- <server> tag
3868: sub start_server {
3869: my ($target,$token) = @_;
3870: my $currentstring = '';
3871: if ($target eq 'web' || $target eq 'webgrade') {
3872: $currentstring = $token->[4];
3873: }
3874: return $currentstring;
3875: }
3876:
3877: sub end_server {
3878: my ($target,$token) = @_;
3879: my $currentstring = '';
3880: if ($target eq 'web' || $target eq 'webgrade') {
3881: $currentstring = $token->[2];
3882: }
3883: return $currentstring;
3884: }
3885:
3886: #-- <spacer> tag (end tag forbidden)
3887: sub start_spacer {
3888: my ($target,$token) = @_;
3889: my $currentstring = &end_p(); # Close off any open <p> tag.
3890: if ($target eq 'web' || $target eq 'webgrade') {
3891: $currentstring .= $token->[4];
3892: }
3893: return $currentstring;
3894: }
3895:
3896: sub end_spacer {
3897: my ($target,$token) = @_;
3898: my $currentstring = '';
3899: if ($target eq 'web' || $target eq 'webgrade') {
3900: $currentstring = $token->[2];
3901: }
3902: return $currentstring;
3903: }
3904:
3905: #-- <span> tag (end tag required)
3906: sub start_span {
3907: my ($target,$token) = @_;
3908: my $currentstring = '';
3909: if ($target eq 'web' || $target eq 'webgrade') {
3910: $currentstring = $token->[4];
3911: }
3912: return $currentstring;
3913: }
3914:
3915: sub end_span {
3916: my ($target,$token) = @_;
3917: my $currentstring = '';
3918: if ($target eq 'web' || $target eq 'webgrade') {
3919: $currentstring = $token->[2];
3920: }
3921: return $currentstring;
3922: }
3923:
3924: #-- <tbody> tag (end tag optional)
3925: sub start_tbody {
3926: my ($target,$token) = @_;
3927: my $currentstring = '';
3928: if ($target eq 'web' || $target eq 'webgrade') {
3929: $currentstring = $token->[4];
3930: }
3931: return $currentstring;
3932: }
3933:
3934: sub end_tbody {
3935: my ($target,$token) = @_;
3936: my $currentstring = '';
3937: if ($target eq 'web' || $target eq 'webgrade') {
3938: $currentstring = $token->[2];
3939: }
3940: return $currentstring;
3941: }
3942:
3943: #-- <tfoot> tag (end tag optional)
3944: sub start_tfoot {
3945: my ($target,$token) = @_;
3946: my $currentstring = '';
3947: if ($target eq 'web' || $target eq 'webgrade') {
3948: $currentstring = $token->[4];
3949: }
3950: return $currentstring;
3951: }
3952:
3953: sub end_tfoot {
3954: my ($target,$token) = @_;
3955: my $currentstring = '';
3956: if ($target eq 'web' || $target eq 'webgrade') {
3957: $currentstring = $token->[2];
3958: }
3959: return $currentstring;
3960: }
3961:
3962: #-- <thead> tag (end tag optional)
3963: sub start_thead {
3964: my ($target,$token) = @_;
3965: my $currentstring = '';
3966: if ($target eq 'web' || $target eq 'webgrade') {
3967: $currentstring = $token->[4];
3968: }
3969: return $currentstring;
3970: }
3971:
3972: sub end_thead {
3973: my ($target,$token) = @_;
3974: my $currentstring = '';
3975: if ($target eq 'web' || $target eq 'webgrade') {
3976: $currentstring = $token->[2];
3977: }
3978: return $currentstring;
3979: }
3980:
3981: #-- <var> tag
3982: sub start_var {
3983: my ($target,$token) = @_;
3984: my $currentstring = '';
3985: if ($target eq 'web' || $target eq 'webgrade') {
3986: $currentstring = $token->[4];
3987: } elsif ($target eq 'tex') {
3988: $currentstring = '\textit{';
3989: }
3990: return $currentstring;
3991: }
3992:
3993: sub end_var {
3994: my ($target,$token) = @_;
3995: my $currentstring = '';
3996: if ($target eq 'web' || $target eq 'webgrade') {
3997: $currentstring = $token->[2];
3998: } elsif ($target eq 'tex') {
3999: $currentstring = '}';
4000: }
4001: return $currentstring;
4002: }
4003:
4004: #-- <wbr> tag (end tag forbidden)
4005: sub start_wbr {
4006: my ($target,$token) = @_;
4007: my $currentstring = '';
4008: if ($target eq 'web' || $target eq 'webgrade') {
4009: $currentstring = $token->[4];
4010: }
4011: return $currentstring;
4012: }
4013:
4014: sub end_wbr {
4015: my ($target,$token) = @_;
4016: my $currentstring = '';
4017: if ($target eq 'web' || $target eq 'webgrade') {
4018: $currentstring = $token->[2];
4019: }
4020: return $currentstring;
4021: }
4022:
4023: #-- <hideweboutput> tag
4024: sub start_hideweboutput {
4025: my ($target,$token) = @_;
4026: if ($target eq 'web' || $target eq 'webgrade') {
4027: &Apache::lonxml::startredirection();
4028: }
4029: return '';
4030: }
4031:
4032: sub end_hideweboutput {
4033: my ($target,$token) = @_;
4034: my $currentstring = '';
4035: if ($target eq 'web' || $target eq 'webgrade') {
4036: $currentstring = &Apache::lonxml::endredirection();
4037: }
4038: return '';
4039: }
4040:
4041:
4042: sub image_replication {
4043: my $src = shift;
4044: if (not -e $src) { &Apache::lonnet::repcopy($src); }
4045: #replicates eps or ps
4046: my $epssrc = my $pssrc = $src;
4047: $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
4048: $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
4049: if (not -e $epssrc && not -e $pssrc) {
4050: my $result=&Apache::lonnet::repcopy($epssrc);
4051: if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
4052: }
4053: return '';
4054: }
4055: #
4056: # Get correct sizing parameter for an image given
4057: # it's initial ht. and wid. This allows sizing of
4058: # images that are generated on-the-fly (e.g. gnuplot)
4059: # as well as serving as a utility for image_size.
4060: #
4061: # Parameter:
4062: # height_param
4063: # width_param - Initial picture dimensions.
4064: # scaling - A scale factor.
4065: # parstack, - the current stack of tag attributes
4066: # from the xml parser
4067: # safeeval, - pointer to the safespace
4068: # depth, - from what level in the stack to look for attributes
4069: # (assumes -1 if unspecified)
4070: # cis - look for attrubutes case insensitively
4071: # (assumes false)
4072: #
4073: # Returns:
4074: # height, width - new dimensions.
4075: #
4076: sub resize_image {
4077: my ($height_param, $width_param, $scaling,
4078: $parstack, $safeeval, $depth, $cis) = @_;
4079:
4080: # First apply the scaling...
4081:
4082: $height_param = $height_param * $scaling;
4083: $width_param = $width_param * $scaling;
4084:
4085: #do we have any specified LaTeX size of the picture?
4086: my $toget='TeXwidth';
4087: if ($cis) {
4088: $toget=lc($toget);
4089: }
4090: my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
4091: $safeeval,$depth,$cis);
4092: $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
4093: my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
4094: $safeeval,$depth,$cis);
4095: #do we have any specified web size of the picture?
4096: my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
4097: $depth,1);
4098: if ($TeXwidth) {
4099: my $old_width_param=$width_param;
4100: if ($TeXwidth=~/(\d+)\s*\%/) {
4101: $width_param = $1*$env{'form.textwidth'}/100;
4102: } else {
4103: $width_param = $TeXwidth;
4104: }
4105: if ($TeXheight) {
4106: $height_param = $TeXheight;
4107: } elsif ($old_width_param) {
4108: $height_param=$TeXwidth/$old_width_param*$height_param;
4109: }
4110: } elsif ($TeXheight) {
4111: $height_param = $TeXheight;
4112: if ($height_param) {
4113: $width_param = $TeXheight/$height_param*$width_param;
4114: }
4115: } elsif ($width) {
4116: my $old_width_param=$width_param;
4117: $width_param = $width*$scaling;
4118: if ($old_width_param) {
4119: $height_param=$width_param/$old_width_param*$height_param;
4120: }
4121: }
4122: if ($width_param > $env{'form.textwidth'}) {
4123: my $old_width_param=$width_param;
4124: $width_param =0.95*$env{'form.textwidth'};
4125: if ($old_width_param) {
4126: $height_param=$width_param/$old_width_param*$height_param;
4127: }
4128: }
4129:
4130: return ($height_param, $width_param);
4131: }
4132:
4133: sub image_size {
4134: my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
4135:
4136: #size of image from gif/jpg/jpeg/png
4137: my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4138: if (-e $ressrc) {
4139: $src = $ressrc;
4140: }
4141: my $image = Image::Magick->new;
4142: my $current_figure = $image->Read($src);
4143: my $width_param = $image->Get('width');
4144: my $height_param = $image->Get('height');
4145: &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
4146: undef($image);
4147:
4148: ($height_param, $width_param) = &resize_image($height_param, $width_param,
4149: $scaling, $parstack, $safeeval,
4150: $depth, $cis);
4151:
4152: return ($height_param, $width_param);
4153: }
4154:
4155: sub image_width {
4156: my ($height, $width) = &image_size(@_);
4157: return $width;
4158: }
4159: # Not yet 100% sure this is correct in all circumstances..
4160: # due to my uncertainty about mods to image_size.
4161: #
4162: sub image_height {
4163: my ($height, $width) = &image_size(@_);
4164: return $height;
4165: }
4166:
4167: sub get_eps_image {
4168: my ($src)=@_;
4169: my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
4170:
4171: # In order to prevent the substitution of the alt text, we need to
4172: # be sure the orig_src file is on system now so:
4173:
4174: if (! -e $orig_src) {
4175: &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
4176: }
4177: &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
4178: my ($spath, $sname, $sext) = fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
4179: $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
4180: $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
4181: &Apache::lonxml::debug("Filelocation gives: $src");
4182: if (! -e $src) {
4183: &Apache::lonxml::debug("$src does not exist");
4184: if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
4185: &Apache::lonxml::debug("Repcopy of $src failed (1)");
4186: #if replication failed try to find ps file
4187: $src=~s/\.eps$/\.ps/;
4188: &Apache::lonxml::debug("Now looking for $src");
4189: #if no ps file try to replicate it.
4190: my $didrepcopy = &Apache::lonnet::repcopy($src);
4191: &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
4192: if ( (not -e $src) ||
4193: ($didrepcopy ne 'ok')) {
4194: &Apache::lonxml::debug("Failed to find or replicate $src");
4195:
4196: #if replication failed try to produce eps file dynamically
4197: $src=~s/\.ps$/\.eps/;
4198: my $temp_file;
4199: open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
4200: my $newsrc=$orig_src;
4201: $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
4202: &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
4203: print FILE "$newsrc\n";
4204: close FILE;
4205: $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
4206: $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
4207: if ($sext ne "") { # Put the ext. back in to uniquify.
4208: $src =~ s/\.eps$/$sext.eps/;
4209: }
4210: }
4211: }
4212: }
4213: my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
4214: &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
4215: return ($path.'/',$file);
4216: }
4217:
4218: sub eps_generation {
4219: my ($src,$file,$width_param) = @_;
4220: my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
4221: my $temp_file = Apache::File->new('>>'.$filename);
4222: print $temp_file "$src\n";
4223: my $newsrc = $src;
4224: $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
4225: $newsrc=~s/\/home\/httpd\/html\/res//;
4226: $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
4227: $newsrc=~s/\/\.\//\//;
4228: $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
4229: if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
4230: $newsrc=~s/\/home\/httpd\/lonUsers//;
4231: $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
4232: }
4233: if ($newsrc=~/\/userfiles\//) {
4234: return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4235: } else {
4236: return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
4237: }
4238: }
4239:
4240: sub file_path {
4241: my $src=shift;
4242: my ($file,$path);
4243: if ($src =~ m!(.*)/([^/]*)$!) {
4244: $file = $2;
4245: $path = $1.'/';
4246: }
4247: return $file,$path;
4248: }
4249: # Converts a measurement in to mm from any of
4250: # the other valid LaTeX units of measure.
4251: # If the units of measure are missing from the
4252: # parameter, it is assumed to be in and returned
4253: # with mm units of measure
4254: sub recalc {
4255: my $argument = shift;
4256: if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
4257: $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
4258: my $value=$1;
4259: my $units=$2;
4260: if ($units eq 'cm') {
4261: $value*=10;
4262: } elsif ($units eq 'in') {
4263: $value*=25.4;
4264: } elsif ($units eq 'pc') {
4265: $value*=(25.4*12/72.27);
4266: } elsif ($units eq 'pt') {
4267: $value*=(25.4/72.27);
4268: }
4269: return $value.' mm';
4270: }
4271:
4272: sub LATEX_length {
4273: my $garbage=shift;
4274: $garbage=~s/^\s+$//;
4275: $garbage=~s/^\s+(\S.*)/$1/;#space before
4276: $garbage=~s/(.*\S)\s+$/$1/;#space after
4277: $garbage=~s/(\s)+/$1/;#only one space
4278: $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
4279: $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
4280: $garbage=~s/([^\\])\$/$1/g;#$
4281: $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
4282: $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;
4283: $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;
4284: $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;
4285: $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;
4286: $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;
4287: $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;
4288: $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
4289: #remove some other LaTeX command
4290: $garbage=~s|\\(\w+)\\|\\|g;
4291: $garbage=~s|\\(\w+)(\s*)|$2|g;
4292: $garbage=~s|\+|11|g;
4293: my $value=length($garbage);
4294: return $value;
4295: }
4296:
4297:
4298: # is_inside_of $tagstack $tag
4299: # This sub returns true if the current state of Xml processing
4300: # is inside of the tag.
4301: # Parameters:
4302: # tagstack - The tagstack from the parser.
4303: # tag - The tag (without the <>'s.).
4304: # Sample usage:
4305: # if (is_inside_of($tagstack "table")) {
4306: # # I'm in a table....
4307: # }
4308: sub is_inside_of {
4309: my ($tagstack, $tag) = @_;
4310: my @stack = @$tagstack;
4311: for (my $i = ($#stack - 1); $i >= 0; $i--) {
4312: if ($stack[$i] eq $tag) {
4313: return 1;
4314: }
4315: }
4316: return 0;
4317: }
4318:
4319:
4320: 1;
4321: __END__
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