1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.64 2004/12/10 19:59:55 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # (TeX Content Handler
29: #
30: # YEAR=2000
31: # 05/29/00,05/30 Gerd Kortemeyer)
32: # 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
33: # 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16,
34: # YEAR=2001
35: # 08/13/01,08/30,10/1 Gerd Kortemeyer
36: # YEAR=2002
37: # 03/19 Gerd Kortemeyer
38: #
39: ###
40:
41: package Apache::lonpage;
42:
43: use strict;
44: use Apache::Constants qw(:common :http);
45: use Apache::lonnet();
46: use Apache::loncommon();
47: use Apache::lonxml();
48: use Apache::lonlocal;
49: use Apache::lonmenu;
50: use HTML::TokeParser;
51: use GDBM_File;
52: use Apache::lonsequence;
53:
54: # -------------------------------------------------------------- Module Globals
55: my %hash;
56: my @rows;
57:
58: # ------------------------------------------------------------------ Euclid gcd
59:
60: sub euclid {
61: my ($e,$f)=@_;
62: my $a; my $b; my $r;
63: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
64: while ($r!=0) {
65: $a=$b; $b=$r;
66: $r=$a%$b;
67: }
68: return $b;
69: }
70:
71: # ------------------------------------------------------------ Build page table
72:
73: sub tracetable {
74: my ($sofar,$rid,$beenhere)=@_;
75: my $further=$sofar;
76: my $randomout=0;
77: unless ($ENV{'request.role.adv'}) {
78: $randomout = $hash{'randomout_'.$rid};
79: }
80: unless ($beenhere=~/\&$rid\&/) {
81: $beenhere.=$rid.'&';
82: unless ($randomout) {
83: if (defined($hash{'is_map_'.$rid})) {
84: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
85: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
86: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
87: $sofar=
88: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
89: '&'.$frid.'&');
90: $sofar++;
91: if ($hash{'src_'.$frid}) {
92: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
93: if (($brepriv eq '2') || ($brepriv eq 'F')) {
94: if (defined($rows[$sofar])) {
95: $rows[$sofar].='&'.$frid;
96: } else {
97: $rows[$sofar]=$frid;
98: }
99: }
100: }
101: }
102: } else {
103: $sofar++;
104: if ($hash{'src_'.$rid}) {
105: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
106: if (($brepriv eq '2') || ($brepriv eq 'F')) {
107: if (defined($rows[$sofar])) {
108: $rows[$sofar].='&'.$rid;
109: } else {
110: $rows[$sofar]=$rid;
111: }
112: }
113: }
114: }
115: }
116:
117: if (defined($hash{'to_'.$rid})) {
118: my $mincond=1;
119: my $next='';
120: foreach (split(/\,/,$hash{'to_'.$rid})) {
121: my $thiscond=
122: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
123: if ($thiscond>=$mincond) {
124: if ($next) {
125: $next.=','.$_.':'.$thiscond;
126: } else {
127: $next=$_.':'.$thiscond;
128: }
129: if ($thiscond>$mincond) { $mincond=$thiscond; }
130: }
131: }
132: foreach (split(/\,/,$next)) {
133: my ($linkid,$condval)=split(/\:/,$_);
134: if ($condval>=$mincond) {
135: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
136: if ($now>$further) { $further=$now; }
137: }
138: }
139: }
140: }
141: return $further;
142: }
143:
144: # ================================================================ Main Handler
145:
146: sub handler {
147: my $r=shift;
148:
149: # ------------------------------------------- Set document type for header only
150:
151: if ($r->header_only) {
152: if ($ENV{'browser.mathml'}) {
153: &Apache::loncommon::content_type($r,'text/xml');
154: } else {
155: &Apache::loncommon::content_type($r,'text/html');
156: }
157: $r->send_http_header;
158: return OK;
159: }
160:
161: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
162: ['forceselect','launch']);
163: my $number_of_columns = 1;
164: my $requrl=$r->uri;
165: my $target = $ENV{'form.grade_target'};
166: # &Apache::lonnet::logthis("Got a target of $target");
167: if ($target eq 'meta') {
168: &Apache::loncommon::content_type($r,'text/html');
169: $r->send_http_header;
170: return OK;
171: }
172: # ----------------------------------------------------------------- Tie db file
173: if (($ENV{'request.course.fn'}) && (!$ENV{'form.forceselect'})) {
174: my $fn=$ENV{'request.course.fn'};
175: if (-e "$fn.db") {
176: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
177: # ------------------------------------------------------------------- Hash tied
178: my $firstres=$hash{'map_start_'.$requrl};
179: my $lastres=$hash{'map_finish_'.$requrl};
180: if (($firstres) && ($lastres)) {
181: # ----------------------------------------------------------------- Render page
182:
183: @rows=();
184:
185: &tracetable(0,$firstres,'&');
186:
187: # ------------------------------------------------------------ Add to symb list
188:
189: my $i;
190: my %symbhash=();
191: for ($i=0;$i<=$#rows;$i++) {
192: if ($rows[$i]) {
193: my @colcont=split(/\&/,$rows[$i]);
194: foreach (@colcont) {
195: $symbhash{$hash{'src_'.$_}}='';
196: }
197: }
198: }
199: &Apache::lonnet::symblist($requrl,%symbhash);
200:
201: # ------------------------------------------------------------------ Page parms
202:
203: my $j;
204: my $lcm=1;
205: my $contents=0;
206: my $nforms=0;
207:
208: my %ssibody=();
209: my %ssibgcolor=();
210: my %ssitext=();
211: my %ssilink=();
212: my %ssivlink=();
213: my %ssialink=();
214:
215: my %metalink=();
216:
217: my %cellemb=();
218:
219: my $allscript='';
220: my $allmeta='';
221:
222: my $isxml=0;
223: my $xmlheader='';
224: my $xmlbody='';
225:
226: # --------------------------------------------- Get SSI output, post parameters
227:
228: for ($i=0;$i<=$#rows;$i++) {
229: if ($rows[$i]) {
230: $contents++;
231: my @colcont=split(/\&/,$rows[$i]);
232: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
233: foreach (@colcont) {
234: my $src=$hash{'src_'.$_};
235: my ($extension)=($src=~/\.(\w+)$/);
236: if ($hash{'encrypted_'.$_}) {
237: $src=&Apache::lonenc::encrypted($src);
238: }
239: $metalink{$_}=$src.'.meta';
240: $cellemb{$_}=
241: &Apache::loncommon::fileembstyle($extension);
242: if ($cellemb{$_} eq 'ssi') {
243: # --------------------------------------------------------- This is an SSI cell
244: my ($mapid,$resid)=split(/\./,$_);
245: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
246:
247: my $prefix=$_.'_';
248: my %posthash=('request.prefix' => $prefix,
249: 'symb' => $symb);
250: if ($ENV{'form.grade_target'} eq 'tex') {
251: $posthash{'grade_target'}=$ENV{'form.grade_target'};
252: $posthash{'textwidth'}=$ENV{'form.textwidth'};
253: $posthash{'problem_split'}=$ENV{'form.problem_split'};
254: $posthash{'latex_type'}=$ENV{'form.latex_type'};
255: $posthash{'rndseed'}=$ENV{'form.rndseed'};
256: }
257: if (($ENV{'form.'.$prefix.'submit'})
258: || ($ENV{'form.all_submit'})) {
259: foreach (keys %ENV) {
260: if ($_=~/^form.$prefix/) {
261: my $name=$_;
262: $name=~s/^form.$prefix//;
263: $posthash{$name}=$ENV{$_};
264: }
265: }
266: }
267: my $output=Apache::lonnet::ssi($src,%posthash);
268: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
269: if ($target eq 'tex') {
270: $output =~ s/^([^&]+)\\begin{document}//;
271: $output =~ s/\\end{document}//;
272: $output = '\parbox{\minipagewidth}{ '.$output.' }';
273: #some additional cleanup necessary for LateX (due to limitations of table environment
274: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
275: }
276: my $parser=HTML::TokeParser->new(\$output);
277: my $token;
278: my $thisdir=$src;
279: my $bodydef=0;
280: my $thisxml=0;
281: my @rlinks=();
282: if ($output=~/\?xml/) {
283: $isxml=1;
284: $thisxml=1;
285: $output=~
286: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
287: $xmlheader=$1;
288: }
289: while ($token=$parser->get_token) {
290: if ($token->[0] eq 'S') {
291: if ($token->[1] eq 'a') {
292: if ($token->[2]->{'href'}) {
293: $rlinks[$#rlinks+1]=
294: $token->[2]->{'href'};
295: }
296: } elsif ($token->[1] eq 'img') {
297: $rlinks[$#rlinks+1]=
298: $token->[2]->{'src'};
299: } elsif ($token->[1] eq 'embed') {
300: $rlinks[$#rlinks+1]=
301: $token->[2]->{'src'};
302: } elsif ($token->[1] eq 'base') {
303: $thisdir=$token->[2]->{'href'};
304: } elsif ($token->[1] eq 'body') {
305: $bodydef=1;
306: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
307: $ssitext{$_}=$token->[2]->{'text'};
308: $ssilink{$_}=$token->[2]->{'link'};
309: $ssivlink{$_}=$token->[2]->{'vlink'};
310: $ssialink{$_}=$token->[2]->{'alink'};
311: if ($thisxml) {
312: $xmlbody=$token->[4];
313: }
314: } elsif ($token->[1] eq 'meta') {
315: if ($token->[4] !~ m:/>$:) {
316: $allmeta.="\n".$token->[4].'</meta>';
317: } else {
318: $allmeta.="\n".$token->[4];
319: }
320: } elsif (($token->[1] eq 'script') &&
321: ($bodydef==0)) {
322: $allscript.="\n\n"
323: .$parser->get_text('/script');
324: }
325: }
326: }
327: if ($output=~/\<body[^\>]*\>(.*)/si) {
328: $output=$1;
329: }
330: $output=~s/\<\/body\>.*//si;
331: if ($output=~/\<form/si) {
332: $nforms++;
333: $output=~s/\<form[^\>]*\>//gsi;
334: $output=~s/\<\/form[^\>]*\>//gsi;
335: $output=~
336: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([\w\.\:]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
337: }
338: $thisdir=~s/\/[^\/]*$//;
339: foreach (@rlinks) {
340: unless (($_=~/^http:\/\//i) ||
341: ($_=~/^\//) ||
342: ($_=~/^javascript:/i) ||
343: ($_=~/^mailto:/i) ||
344: ($_=~/^\#/)) {
345: my $newlocation=
346: &Apache::lonnet::hreflocation($thisdir,$_);
347: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
348: }
349: }
350: # -------------------------------------------------- Deal with Applet codebases
351: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
352: $ssibody{$_}=$output;
353: # ---------------------------------------------------------------- End SSI cell
354: }
355: }
356: }
357: }
358: unless ($contents) {
359: &Apache::loncommon::content_type($r,'text/html');
360: $r->send_http_header;
361: $r->print('<html>'."\n".
362: '<head>'."\n".
363: &Apache::lonmenu::registerurl(1,undef)."\n".
364: '</head>'."\n".
365: '<body bgcolor="#FFFFFF" onLoad="'
366: .&Apache::lonmenu::loadevents.
367: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
368: &Apache::lonmenu::menubuttons(undef,$target,1)
369: );
370: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
371: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').'.</body></html>');
372: } else {
373: # ------------------------------------------------------------------ Build page
374:
375: # ---------------------------------------------------------------- Send headers
376: unless ($target eq 'tex') {
377: if ($isxml) {
378: &Apache::loncommon::content_type($r,'text/xml');
379: $r->send_http_header;
380: $r->print($xmlheader);
381: } else {
382: &Apache::loncommon::content_type($r,'text/html');
383: $r->send_http_header;
384: $r->print('<html>');
385: }
386: # ------------------------------------------------------------------------ Head
387: $r->print("\n<head>\n".$allmeta);
388: if ($allscript) {
389: $r->print("\n<script language='JavaScript'>\n".
390: $allscript."\n</script>\n");
391: }
392: $r->print(&Apache::lonmenu::registerurl(1,undef));
393: $r->print("\n</head>\n");
394: # ------------------------------------------------------------------ Start body
395: if ($isxml) {
396: $r->print($xmlbody);
397: } else {
398: $r->print(
399: '<body bgcolor="#FFFFFF" onLoad="'.&Apache::lonmenu::loadevents.
400: '" onUnload="'.&Apache::lonmenu::unloadevents.'">'.
401: &Apache::lonmenu::menubuttons(undef,$target,1)
402: );
403: }
404: # ------------------------------------------------------------------ Start form
405: if ($nforms) {
406: $r->print('<form method="post" action="'.
407: &Apache::lonenc::check_encrypt($requrl)
408: .'">');
409: }
410: } elsif ($target eq 'tex') {
411: $r->print('\documentclass{article}
412: \newcommand{\keephidden}[1]{}
413: \usepackage[dvips]{graphicx}
414: \usepackage{epsfig}
415: \usepackage{calc}
416: \usepackage{longtable}
417: \begin{document}');
418: }
419: # ----------------------------------------------------------------- Start table
420: if ($target eq 'tex') {
421: $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
422: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
423: } else {
424: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
425: }
426: for ($i=0;$i<=$#rows;$i++) {
427: if ($rows[$i]) {
428: unless ($target eq 'tex') {
429: $r->print("\n<tr>");
430: }
431: my @colcont=split(/\&/,$rows[$i]);
432: my $avespan=$lcm/($#colcont+1);
433: for ($j=0;$j<=$#colcont;$j++) {
434: my $rid=$colcont[$j];
435: my $metainfo = '';
436: my $esrc=&Apache::lonnet::declutter($hash{'src_'.$rid});
437: if ($hash{'encrypted_'.$rid}) {
438: $esrc=&Apache::lonenc::encrypted($esrc);
439: }
440: unless ($hash{'src_'.$rid} =~ m-^/uploaded/-) {
441: $metainfo ='<a name="'.&Apache::lonnet::escape($esrc).'" />'.
442: '<a href="'.$metalink{$rid}.'" target="LONcatInfo">'.
443: '<img src="/adm/lonMisc/cat_button.gif" border=0>'.
444: '</img></a>';
445: }
446: $metainfo .= '<a href="/adm/evaluate?postdata='.
447: &Apache::lonnet::escape($esrc).
448: '" target="LONcatInfo">'.
449: '<img src="/adm/lonMisc/eval_button.gif" border=0>'.
450: '</img></a>';
451: if (
452: ($hash{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) &&
453: (&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) &&
454: ($hash{'src_'.$rid} !~ m-^/uploaded/-)) {
455: my ($mapid,$resid)=split(/\./,$rid);
456: my $symb=
457: &Apache::lonnet::declutter($hash{'map_id_'.$mapid}).
458: '___'.$resid.'___'.
459: &Apache::lonnet::declutter($hash{'src_'.$rid});
460: $metainfo.=
461: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
462: # '&command=submission" target="LONcatInfo">'.
463: '&command=submission">'.
464: '<img src="/adm/lonMisc/subm_button.gif" border=0>'.
465: '</img></a>'.
466: '<a href="/adm/grades?symb='.&Apache::lonnet::escape($symb).
467: # '&command=gradingmenu" target="LONcatInfo">'.
468: '&command=gradingmenu">'.
469: '<img src="/adm/lonMisc/pgrd_button.gif" border=0>'.
470: '</img></a>'.
471: '<a href="/adm/parmset?symb='.&Apache::lonnet::escape($symb).
472: # '" target="LONcatInfo">'.
473: '" >'.
474: '<img src="/adm/lonMisc/pprm_button.gif" border=0>'.
475: '</img></a>';
476: }
477: $metainfo.='<br></br>';
478: unless ($target eq 'tex') {
479: $r->print('<td colspan="'.$avespan.'"');
480: }
481: if ($cellemb{$rid} eq 'ssi') {
482: unless ($target eq 'tex') {
483: if ($ssibgcolor{$rid}) {
484: $r->print(' bgcolor="'.
485: $ssibgcolor{$rid}.'"');
486: }
487: $r->print('>'.$metainfo.'<font');
488:
489: if ($ssitext{$rid}) {
490: $r->print(' text="'.$ssitext{$rid}.'"');
491: }
492: if ($ssilink{$rid}) {
493: $r->print(' link="'.$ssilink{$rid}.'"');
494: }
495: if ($ssitext{$rid}) {
496: $r->print(' vlink="'.$ssivlink{$rid}.'"');
497: }
498: if ($ssialink{$rid}) {
499: $r->print(' alink="'.$ssialink{$rid}.'"');
500: }
501: $r->print('>');
502: }
503: $r->print($ssibody{$rid});
504: unless ($target eq 'tex') {
505: $r->print('</font>');
506: }
507: if ($ENV{'course.'.
508: $ENV{'request.course.id'}.
509: '.pageseparators'} eq 'yes') {
510: unless($target eq 'tex') {
511: $r->print('<hr />');
512: } else {
513: $r->print('\hline');
514: }
515: }
516: } elsif ($cellemb{$rid} eq 'img') {
517: $r->print('>'.$metainfo.'<img src="'.
518: $hash{'src_'.$rid}.'"></img>');
519: } elsif ($cellemb{$rid} eq 'emb') {
520: $r->print('>'.$metainfo.'<embed src="'.
521: $hash{'src_'.$rid}.'"></embed>');
522: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
523: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
524: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
525: &Apache::londocs::entryline(0,&mt("Click to download or use your browser's Save Link function"),'/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).'</table></p><br />');
526: }
527: unless ($target eq 'tex') {
528: $r->print('</td>');
529: } else {
530: for (my $incol=1;$incol<=$avespan;$incol++) {
531: $r->print(' & ');
532: }
533: }
534: }
535: unless ($target eq 'tex') {
536: $r->print('</tr>');
537: } else {
538: $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
539: }
540: }
541: }
542: unless ($target eq 'tex') {
543: $r->print("\n</table>");
544: } else {
545: $r->print('\end{longtable}\strut');
546: }
547: # ---------------------------------------------------------------- Submit, etc.
548: if ($nforms) {
549: $r->print(
550: '<input name="all_submit" value="Submit All" type="'.
551: (($nforms>1)?'submit':'hidden').'"></input></form>');
552: }
553: unless ($target eq 'tex') {
554: $r->print('</body>'.&Apache::lonxml::xmlend());
555: } else {
556: $r->print('\end{document}'.$number_of_columns);
557: }
558: # -------------------------------------------------------------------- End page
559: }
560: # ------------------------------------------------------------- End render page
561: } else {
562: $r->content_type('text/html');
563: $r->send_http_header;
564: &Apache::lonsequence::viewmap($r,$requrl);
565: }
566: # ------------------------------------------------------------------ Untie hash
567: unless (untie(%hash)) {
568: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
569: "Could not untie coursemap $fn (browse).</font>");
570: }
571: # -------------------------------------------------------------------- All done
572: return OK;
573: # ----------------------------------------------- Errors, hash could no be tied
574: }
575: }
576: }
577: $r->content_type('text/html');
578: $r->send_http_header;
579: &Apache::lonsequence::viewmap($r,$requrl);
580: return OK;
581: }
582:
583: 1;
584: __END__
585:
586: =head1 NAME
587:
588: Apache::lonpage - Page Handler
589:
590: =head1 SYNOPSIS
591:
592: Invoked by /etc/httpd/conf/srm.conf:
593:
594: <LocationMatch "^/res/.*\.page$>
595: SetHandler perl-script
596: PerlHandler Apache::lonpage
597: </LocationMatch>
598:
599: =head1 INTRODUCTION
600:
601: This module renders a .page resource.
602:
603: This is part of the LearningOnline Network with CAPA project
604: described at http://www.lon-capa.org.
605:
606: =head1 HANDLER SUBROUTINE
607:
608: This routine is called by Apache and mod_perl.
609:
610: =over 4
611:
612: =item *
613:
614: set document type for header only
615:
616: =item *
617:
618: tie db file
619:
620: =item *
621:
622: render page
623:
624: =item *
625:
626: add to symb list
627:
628: =item *
629:
630: page parms
631:
632: =item *
633:
634: Get SSI output, post parameters
635:
636: =item *
637:
638: SSI cell rendering
639:
640: =item *
641:
642: Deal with Applet codebases
643:
644: =item *
645:
646: Build page
647:
648: =item *
649:
650: send headers
651:
652: =item *
653:
654: start body
655:
656: =item *
657:
658: start form
659:
660: =item *
661:
662: start table
663:
664: =item *
665:
666: submit element, etc, render page, untie hash
667:
668: =back
669:
670: =head1 OTHER SUBROUTINES
671:
672: =over 4
673:
674: =item *
675:
676: euclid() : Euclid's method for determining the greatest common denominator.
677:
678: =item *
679:
680: tracetable() : Build page table.
681:
682: =back
683:
684: =cut
685:
686:
687:
688:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonpage.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / rat