1: # The LearningOnline Network with CAPA
2: # Handler to set parameters for assessments
3: #
4: # $Id: lonparmset.pm,v 1.124 2003/09/05 03:47:47 www 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: ###################################################################
29: ###################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
35: lonparmset - Handler to set parameters for assessments and course
36:
37: =head1 SYNOPSIS
38:
39: lonparmset provides an interface to setting course parameters.
40:
41: =head1 DESCRIPTION
42:
43: This module sets coursewide and assessment parameters.
44:
45: =head1 INTERNAL SUBROUTINES
46:
47: =over 4
48:
49: =cut
50:
51: ###################################################################
52: ###################################################################
53:
54: package Apache::lonparmset;
55:
56: use strict;
57: use Apache::lonnet;
58: use Apache::Constants qw(:common :http REDIRECT);
59: use Apache::lonhtmlcommon();
60: use Apache::loncommon;
61: use GDBM_File;
62: use Apache::lonhomework;
63: use Apache::lonxml;
64:
65:
66: my %courseopt;
67: my %useropt;
68: my %parmhash;
69:
70: my @ids;
71: my %symbp;
72: my %mapp;
73: my %typep;
74: my %keyp;
75:
76: my %maptitles;
77:
78: my $uname;
79: my $udom;
80: my $uhome;
81: my $csec;
82: my $coursename;
83:
84: ##################################################
85: ##################################################
86:
87: =pod
88:
89: =item parmval
90:
91: Figure out a cascading parameter.
92:
93: Inputs: $what - a parameter spec (incluse part info and name I.E. 0.weight)
94: $id - a bighash Id number
95: $def - the resource's default value 'stupid emacs
96:
97: Returns: A list, the first item is the index into the remaining list of items of parm valuse that is the active one, the list consists of parm values at the 11 possible levels
98:
99: 11- resource default
100: 10- map default
101: 9 - General Course
102: 8 - Map or Folder level in course
103: 7 - resource level in course
104: 6 - General for section
105: 5 - Map or Folder level for section
106: 4 - resource level in section
107: 3 - General for specific student
108: 2 - Map or Folder level for specific student
109: 1 - resource level for specific student
110:
111: =cut
112:
113: ##################################################
114: ##################################################
115: sub parmval {
116: my ($what,$id,$def)=@_;
117: my $result='';
118: my @outpar=();
119: # ----------------------------------------------------- Cascading lookup scheme
120:
121: my $symbparm=$symbp{$id}.'.'.$what;
122: my $mapparm=$mapp{$id}.'___(all).'.$what;
123:
124: my $seclevel=$ENV{'request.course.id'}.'.['.$csec.'].'.$what;
125: my $seclevelr=$ENV{'request.course.id'}.'.['.$csec.'].'.$symbparm;
126: my $seclevelm=$ENV{'request.course.id'}.'.['.$csec.'].'.$mapparm;
127:
128: my $courselevel=$ENV{'request.course.id'}.'.'.$what;
129: my $courselevelr=$ENV{'request.course.id'}.'.'.$symbparm;
130: my $courselevelm=$ENV{'request.course.id'}.'.'.$mapparm;
131:
132: # -------------------------------------------------------- first, check default
133:
134: if ($def) { $outpar[11]=$def; $result=11; }
135:
136: # ----------------------------------------------------- second, check map parms
137:
138: my $thisparm=$parmhash{$symbparm};
139: if ($thisparm) { $outpar[10]=$thisparm; $result=10; }
140:
141: # --------------------------------------------------------- third, check course
142:
143: if (defined($courseopt{$courselevel})) {
144: $outpar[9]=$courseopt{$courselevel};
145: $result=9;
146: }
147:
148: if (defined($courseopt{$courselevelm})) {
149: $outpar[8]=$courseopt{$courselevelm};
150: $result=8;
151: }
152:
153: if (defined($courseopt{$courselevelr})) {
154: $outpar[7]=$courseopt{$courselevelr};
155: $result=7;
156: }
157:
158: if (defined($csec)) {
159: if (defined($courseopt{$seclevel})) {
160: $outpar[6]=$courseopt{$seclevel};
161: $result=6;
162: }
163: if (defined($courseopt{$seclevelm})) {
164: $outpar[5]=$courseopt{$seclevelm};
165: $result=5;
166: }
167:
168: if (defined($courseopt{$seclevelr})) {
169: $outpar[4]=$courseopt{$seclevelr};
170: $result=4;
171: }
172: }
173:
174: # ---------------------------------------------------------- fourth, check user
175:
176: if (defined($uname)) {
177: if (defined($useropt{$courselevel})) {
178: $outpar[3]=$useropt{$courselevel};
179: $result=3;
180: }
181:
182: if (defined($useropt{$courselevelm})) {
183: $outpar[2]=$useropt{$courselevelm};
184: $result=2;
185: }
186:
187: if (defined($useropt{$courselevelr})) {
188: $outpar[1]=$useropt{$courselevelr};
189: $result=1;
190: }
191: }
192: return ($result,@outpar);
193: }
194:
195: ##################################################
196: ##################################################
197:
198: =pod
199:
200: =item valout
201:
202: Format a value for output.
203:
204: Inputs: $value, $type
205:
206: Returns: $value, formatted for output. If $type indicates it is a date,
207: localtime($value) is returned.
208:
209: =cut
210:
211: ##################################################
212: ##################################################
213: sub valout {
214: my ($value,$type)=@_;
215: my $result = '';
216: # Values of zero are valid.
217: if (! $value && $value ne '0') {
218: $result = ' ';
219: } else {
220: if ($type eq 'date_interval') {
221: my ($sec,$min,$hour,$mday,$mon,$year)=gmtime($value);
222: $year=$year-70;
223: $mday--;
224: if ($year) {
225: $result.=$year.' yrs ';
226: }
227: if ($mon) {
228: $result.=$mon.' mths ';
229: }
230: if ($mday) {
231: $result.=$mday.' days ';
232: }
233: if ($hour) {
234: $result.=$hour.' hrs ';
235: }
236: if ($min) {
237: $result.=$min.' mins ';
238: }
239: if ($sec) {
240: $result.=$sec.' secs ';
241: }
242: $result=~s/\s+$//;
243: } elsif ($type=~/^date/) {
244: $result = localtime($value);
245: } else {
246: $result = $value;
247: }
248: }
249: return $result;
250: }
251:
252: ##################################################
253: ##################################################
254:
255: =pod
256:
257: =item plink
258:
259: Produces a link anchor.
260:
261: Inputs: $type,$dis,$value,$marker,$return,$call
262:
263: Returns: scalar with html code for a link which will envoke the
264: javascript function 'pjump'.
265:
266: =cut
267:
268: ##################################################
269: ##################################################
270: sub plink {
271: my ($type,$dis,$value,$marker,$return,$call)=@_;
272: my $winvalue=$value;
273: unless ($winvalue) {
274: if ($type=~/^date/) {
275: $winvalue=$ENV{'form.recent_'.$type};
276: } else {
277: $winvalue=$ENV{'form.recent_'.(split(/\_/,$type))[0]};
278: }
279: }
280: return
281: '<a href="javascript:pjump('."'".$type."','".$dis."','".$winvalue."','"
282: .$marker."','".$return."','".$call."'".');">'.
283: &valout($value,$type).'</a><a name="'.$marker.'"></a>';
284: }
285:
286:
287: sub startpage {
288: my ($r,$id,$udom,$csec,$uname,$have_assesments)=@_;
289:
290: my $bodytag=&Apache::loncommon::bodytag('Set/Modify Course Parameters','',
291: 'onUnload="pclose()"');
292: my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
293: &Apache::loncommon::selectstudent_link('parmform','uname','udom');
294: my $selscript=&Apache::loncommon::studentbrowser_javascript();
295: my $pjump_def = &Apache::lonhtmlcommon::pjump_javascript_definition();
296: $r->print(<<ENDHEAD);
297: <html>
298: <head>
299: <title>LON-CAPA Course Parameters</title>
300: <script>
301:
302: function pclose() {
303: parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
304: "height=350,width=350,scrollbars=no,menubar=no");
305: parmwin.close();
306: }
307:
308: $pjump_def
309:
310: function psub() {
311: pclose();
312: if (document.parmform.pres_marker.value!='') {
313: document.parmform.action+='#'+document.parmform.pres_marker.value;
314: var typedef=new Array();
315: typedef=document.parmform.pres_type.value.split('_');
316: if (document.parmform.pres_type.value!='') {
317: if (typedef[0]=='date') {
318: eval('document.parmform.recent_'+
319: document.parmform.pres_type.value+
320: '.value=document.parmform.pres_value.value;');
321: } else {
322: eval('document.parmform.recent_'+typedef[0]+
323: '.value=document.parmform.pres_value.value;');
324: }
325: }
326: document.parmform.submit();
327: } else {
328: document.parmform.pres_value.value='';
329: document.parmform.pres_marker.value='';
330: }
331: }
332:
333: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
334: var options = "width=" + w + ",height=" + h + ",";
335: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
336: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
337: var newWin = window.open(url, wdwName, options);
338: newWin.focus();
339: }
340: </script>
341: $selscript
342: </head>
343: $bodytag
344:
345: <form method="post" action="/adm/parmset" name="envform">
346: <h4>Course Environment Parameters</h4>
347: <input type="submit" name="crsenv" value="Set Course Environment Parameters" />
348: </form>
349: <hr />
350: <form method="post" action="/adm/helper/parameter.helper" name="helpform">
351: <h4>Course Assessment Parameter - Helper Mode</h4>
352: <input type="submit" value="Set/Modify Course Assessment Parameter" />
353: </form>
354: <hr />
355: <form method="post" action="/adm/parmset" name="overview">
356: <h4>Course Assessment Parameters - Overview Mode</h4>
357: <input type="submit" name="overview" value="Modify Course Assessment Parameters" />
358: </form>
359: <hr />
360: <form method="post" action="/adm/parmset" name="parmform">
361: <h4>Course Assessments Parameters - Table Mode</h4>
362: ENDHEAD
363:
364: if (!$have_assesments) {
365: $r->print('<font color="red">There are no assesment parameters in this course to set.</font><br />');
366: } else {
367: $r->print(<<ENDHEAD);
368: <b>
369: Section/Group:
370: <input type="text" value="$csec" size="6" name="csec">
371: <br>
372: For User
373: <input type="text" value="$uname" size="12" name="uname">
374: or ID
375: <input type="text" value="$id" size="12" name="id">
376: at Domain
377: $chooseopt
378: </b>
379: <input type="hidden" value='' name="pres_value">
380: <input type="hidden" value='' name="pres_type">
381: <input type="hidden" value='' name="pres_marker">
382: ENDHEAD
383: }
384: }
385:
386: sub print_row {
387: my ($r,$which,$part,$name,$rid,$default,$defaulttype,$display,$defbgone,
388: $defbgtwo,$parmlev)=@_;
389: # get the values for the parameter in cascading order
390: # empty levels will remain empty
391: my ($result,@outpar)=&parmval($$part{$which}.'.'.$$name{$which},
392: $rid,$$default{$which});
393: # get the type for the parameters
394: # problem: these may not be set for all levels
395: my ($typeresult,@typeoutpar)=&parmval($$part{$which}.'.'.
396: $$name{$which}.'.type',
397: $rid,$$defaulttype{$which});
398: # cascade down manually
399: my $cascadetype=$defaulttype;
400: for (my $i=$#typeoutpar;$i>0;$i--) {
401: if ($typeoutpar[$i]) {
402: $cascadetype=$typeoutpar[$i];
403: } else {
404: $typeoutpar[$i]=$cascadetype;
405: }
406: }
407:
408: my $parm=$$display{$which};
409:
410: if ($parmlev eq 'full' || $parmlev eq 'brief') {
411: $r->print('<td bgcolor='.$defbgtwo.' align="center">'
412: .$$part{$which}.'</td>');
413: } else {
414: $parm=~s|\[.*\]\s||g;
415: }
416:
417: $r->print('<td bgcolor='.$defbgone.'>'.$parm.'</td>');
418:
419: my $thismarker=$which;
420: $thismarker=~s/^parameter\_//;
421: my $mprefix=$rid.'&'.$thismarker.'&';
422:
423: if ($parmlev eq 'general') {
424:
425: if ($uname) {
426: &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
427: } elsif ($csec) {
428: &print_td($r,6,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
429: } else {
430: &print_td($r,9,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
431: }
432: } elsif ($parmlev eq 'map') {
433:
434: if ($uname) {
435: &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
436: } elsif ($csec) {
437: &print_td($r,5,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
438: } else {
439: &print_td($r,8,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
440: }
441: } else {
442:
443: &print_td($r,11,'#FFDDDD',$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
444:
445: if ($parmlev eq 'brief') {
446:
447: &print_td($r,7,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
448:
449: if ($csec) {
450: &print_td($r,4,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
451: }
452: if ($uname) {
453: &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
454: }
455: } else {
456:
457: &print_td($r,10,'#FFDDDD',$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
458: &print_td($r,9,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
459: &print_td($r,8,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
460: &print_td($r,7,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
461:
462: if ($csec) {
463: &print_td($r,6,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
464: &print_td($r,5,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
465: &print_td($r,4,$defbgtwo,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
466: }
467: if ($uname) {
468: &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
469: &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
470: &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$_,\@typeoutpar,$display);
471: }
472: } # end of $brief if/else
473: } # end of $parmlev if/else
474:
475: if ($parmlev eq 'full' || $parmlev eq 'brief') {
476: $r->print('<td bgcolor=#CCCCFF align="center">'.
477: &valout($outpar[$result],$typeoutpar[$result]).'</td>');
478: }
479: my $sessionval=&Apache::lonnet::EXT('resource.'.$$part{$which}.
480: '.'.$$name{$which},$symbp{$rid});
481: # this doesn't seem to work, and I don't think is correct
482: # my $sessionvaltype=&Apache::lonnet::EXT('resource.'.$$part{$which}.
483: # '.'.$$name{$which}.'.type',$symbp{$rid});
484: # this seems to work
485: my $sessionvaltype=$typeoutpar[$result];
486: if (!defined($sessionvaltype)) { $sessionvaltype=$$defaulttype{$which}; }
487: $r->print('<td bgcolor=#999999 align="center"><font color=#FFFFFF>'.
488: &valout($sessionval,$sessionvaltype).' '.
489: '</font></td>');
490: $r->print('</tr>');
491: $r->print("\n");
492: }
493:
494: sub print_td {
495: my ($r,$which,$defbg,$result,$outpar,$mprefix,$value,$typeoutpar,$display)=@_;
496: $r->print('<td bgcolor='.(($result==$which)?'"#AAFFAA"':$defbg).
497: ' align="center">');
498: if ($which<10) {
499: $r->print(&plink($$typeoutpar[$which],
500: $$display{$value},$$outpar[$which],
501: $mprefix."$which",'parmform.pres','psub'));
502: } else {
503: $r->print(&valout($$outpar[$which],$$typeoutpar[$which]));
504: }
505: $r->print('</td>'."\n");
506: }
507:
508: sub get_env_multiple {
509: my ($name) = @_;
510: my @values;
511: if (defined($ENV{$name})) {
512: # exists is it an array
513: if (ref($ENV{$name})) {
514: @values=@{ $ENV{$name} };
515: } else {
516: $values[0]=$ENV{$name};
517: }
518: }
519: return(@values);
520: }
521:
522: =pod
523:
524: =item B<extractResourceInformation>: Given the course data hash, extractResourceInformation extracts lots of information about the course's resources into a variety of hashes.
525:
526: Input: See list below:
527:
528: =over 4
529:
530: =item B<ids>: An array that will contain all of the ids in the course.
531:
532: =item B<typep>: hash, id->type, where "type" contains the extension of the file, thus, I<problem exam quiz assess survey form>.
533:
534: =item B<keyp>: hash, id->key list, will contain a comma seperated list of the meta-data keys available for the given id
535:
536: =item B<allparms>: hash, name of parameter->display value (what is the display value?)
537:
538: =item B<allparts>: hash, part identification->text representation of part, where the text representation is "[Part $part]"
539:
540: =item B<allkeys>: hash, full key to part->display value (what's display value?)
541:
542: =item B<allmaps>: hash, ???
543:
544: =item B<fcat>: ???
545:
546: =item B<defp>: hash, ???
547:
548: =item B<mapp>: ??
549:
550: =item B<symbp>: hash, id->full sym?
551:
552: =back
553:
554: =cut
555:
556: sub extractResourceInformation {
557: my $bighash = shift;
558: my $ids = shift;
559: my $typep = shift;
560: my $keyp = shift;
561: my $allparms = shift;
562: my $allparts = shift;
563: my $allkeys = shift;
564: my $allmaps = shift;
565: my $fcat = shift;
566: my $defp = shift;
567: my $mapp = shift;
568: my $symbp = shift;
569: my $maptitles=shift;
570:
571: foreach (keys %$bighash) {
572: if ($_=~/^src\_(\d+)\.(\d+)$/) {
573: my $mapid=$1;
574: my $resid=$2;
575: my $id=$mapid.'.'.$resid;
576: my $srcf=$$bighash{$_};
577: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
578: $$ids[$#$ids+1]=$id;
579: $$typep{$id}=$1;
580: $$keyp{$id}='';
581: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'allpossiblekeys'))) {
582: if ($_=~/^parameter\_(.*)/) {
583: my $key=$_;
584: my $allkey=$1;
585: $allkey=~s/\_/\./g;
586: my $display= &Apache::lonnet::metadata($srcf,$key.'.display');
587: my $name=&Apache::lonnet::metadata($srcf,$key.'.name');
588: my $part= &Apache::lonnet::metadata($srcf,$key.'.part');
589: my $parmdis = $display;
590: $parmdis =~ s|(\[Part.*$)||g;
591: my $partkey = $part;
592: $partkey =~ tr|_|.|;
593: $$allparms{$name} = $parmdis;
594: $$allparts{$part} = "[Part $part]";
595: $$allkeys{$allkey}=$display;
596: if ($allkey eq $fcat) {
597: $$defp{$id}= &Apache::lonnet::metadata($srcf,$key);
598: }
599: if ($$keyp{$id}) {
600: $$keyp{$id}.=','.$key;
601: } else {
602: $$keyp{$id}=$key;
603: }
604: }
605: }
606: $$mapp{$id}=
607: &Apache::lonnet::declutter($$bighash{'map_id_'.$mapid});
608: $$mapp{$mapid}=$$mapp{$id};
609: $$allmaps{$mapid}=$$mapp{$id};
610: $$maptitles{$mapid}=
611: $$bighash{'title_'.$$bighash{'ids_'.&Apache::lonnet::clutter($$mapp{$id})}};
612: $$maptitles{$$mapp{$id}}=$$maptitles{$mapid};
613: $$symbp{$id}=$$mapp{$id}.
614: '___'.$resid.'___'.
615: &Apache::lonnet::declutter($srcf);
616: $$symbp{$mapid}=$$mapp{$id}.'___(all)';
617: }
618: }
619: }
620: }
621:
622: ##################################################
623: ##################################################
624:
625: =pod
626:
627: =item assessparms
628:
629: Show assessment data and parameters. This is a large routine that should
630: be simplified and shortened... someday.
631:
632: Inputs: $r
633:
634: Returns: nothing
635:
636: Variables used (guessed by Jeremy):
637:
638: =over 4
639:
640: =item B<pscat>: ParameterS CATegories? ends up a list of the types of parameters that exist, e.g., tol, weight, acc, opendate, duedate, answerdate, sig, maxtries, type.
641:
642: =item B<psprt>: ParameterS PaRTs? a list of the parts of a problem that we are displaying? Used to display only selected parts?
643:
644: =item B<allmaps>:
645:
646: =back
647:
648: =cut
649:
650: ##################################################
651: ##################################################
652: sub assessparms {
653:
654: my $r=shift;
655: # -------------------------------------------------------- Variable declaration
656: my %allkeys;
657: my %allmaps;
658: my %alllevs;
659:
660: $alllevs{'Resource Level'}='full';
661: # $alllevs{'Resource Level [BRIEF]'}='brief';
662: $alllevs{'Map Level'}='map';
663: $alllevs{'Course Level'}='general';
664:
665: my %allparms;
666: my %allparts;
667:
668: my %defp;
669: %courseopt=();
670: %useropt=();
671: my %bighash=();
672:
673: @ids=();
674: %symbp=();
675: %typep=();
676:
677: my $message='';
678:
679: $csec=$ENV{'form.csec'};
680: $udom=$ENV{'form.udom'};
681: unless ($udom) { $udom=$r->dir_config('lonDefDomain'); }
682:
683: my @pscat=&get_env_multiple('form.pscat');
684: my $pschp=$ENV{'form.pschp'};
685: my @psprt=&get_env_multiple('form.psprt');
686: if (!@psprt) { $psprt[0]='0'; }
687: my $showoptions=$ENV{'form.showoptions'};
688:
689: my $pssymb='';
690: my $parmlev='';
691: my $prevvisit=$ENV{'form.prevvisit'};
692:
693: # unless ($parmlev==$ENV{'form.parmlev'}) {
694: # $parmlev = 'full';
695: # }
696:
697: unless ($ENV{'form.parmlev'}) {
698: $parmlev = 'map';
699: } else {
700: $parmlev = $ENV{'form.parmlev'};
701: }
702:
703: # ----------------------------------------------- Was this started from grades?
704:
705: if (($ENV{'form.command'} eq 'set') && ($ENV{'form.url'})
706: && (!$ENV{'form.dis'})) {
707: my $url=$ENV{'form.url'};
708: $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
709: $pssymb=&Apache::lonnet::symbread($url);
710: if (!@pscat) { @pscat=('all'); }
711: $pschp='';
712: $parmlev = 'full';
713: } elsif ($ENV{'form.symb'}) {
714: $pssymb=$ENV{'form.symb'};
715: if (!@pscat) { @pscat=('all'); }
716: $pschp='';
717: $parmlev = 'full';
718: } else {
719: $ENV{'form.url'}='';
720: }
721:
722: my $id=$ENV{'form.id'};
723: if (($id) && ($udom)) {
724: $uname=(&Apache::lonnet::idget($udom,$id))[1];
725: if ($uname) {
726: $id='';
727: } else {
728: $message=
729: "<font color=red>Unknown ID '$id' at domain '$udom'</font>";
730: }
731: } else {
732: $uname=$ENV{'form.uname'};
733: }
734: unless ($udom) { $uname=''; }
735: $uhome='';
736: if ($uname) {
737: $uhome=&Apache::lonnet::homeserver($uname,$udom);
738: if ($uhome eq 'no_host') {
739: $message=
740: "<font color=red>Unknown user '$uname' at domain '$udom'</font>";
741: $uname='';
742: } else {
743: $csec=&Apache::lonnet::getsection($udom,$uname,
744: $ENV{'request.course.id'});
745: if ($csec eq '-1') {
746: $message="<font color=red>".
747: "User '$uname' at domain '$udom' not ".
748: "in this course</font>";
749: $uname='';
750: $csec=$ENV{'form.csec'};
751: } else {
752: my %name=&Apache::lonnet::userenvironment($udom,$uname,
753: ('firstname','middlename','lastname','generation','id'));
754: $message="\n<p>\nFull Name: ".
755: $name{'firstname'}.' '.$name{'middlename'}.' '
756: .$name{'lastname'}.' '.$name{'generation'}.
757: "<br>\nID: ".$name{'id'}.'<p>';
758: }
759: }
760: }
761:
762: unless ($csec) { $csec=''; }
763:
764: my $fcat=$ENV{'form.fcat'};
765: unless ($fcat) { $fcat=''; }
766:
767: # ------------------------------------------------------------------- Tie hashs
768: if (!(tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
769: &GDBM_READER(),0640))) {
770: $r->print("Unable to access course data. (File $ENV{'request.course.fn'}.db not tieable)");
771: return ;
772: }
773: if (!(tie(%parmhash,'GDBM_File',
774: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER(),0640))) {
775: $r->print("Unable to access parameter data. (File $ENV{'request.course.fn'}_parms.db not tieable)");
776: return ;
777: }
778:
779: # --------------------------------------------------------- Get all assessments
780: extractResourceInformation(\%bighash, \@ids, \%typep,\%keyp, \%allparms, \%allparts, \%allkeys, \%allmaps, $fcat, \%defp, \%mapp, \%symbp,\%maptitles);
781:
782: $mapp{'0.0'} = '';
783: $symbp{'0.0'} = '';
784:
785: # ---------------------------------------------------------- Anything to store?
786: if ($ENV{'form.pres_marker'}) {
787: my ($sresid,$spnam,$snum)=split(/\&/,$ENV{'form.pres_marker'});
788: $spnam=~s/\_([^\_]+)$/\.$1/;
789: # ---------------------------------------------------------- Construct prefixes
790:
791: my $symbparm=$symbp{$sresid}.'.'.$spnam;
792: my $mapparm=$mapp{$sresid}.'___(all).'.$spnam;
793:
794: my $seclevel=$ENV{'request.course.id'}.'.['.$csec.'].'.$spnam;
795: my $seclevelr=$ENV{'request.course.id'}.'.['.$csec.'].'.$symbparm;
796: my $seclevelm=$ENV{'request.course.id'}.'.['.$csec.'].'.$mapparm;
797:
798: my $courselevel=$ENV{'request.course.id'}.'.'.$spnam;
799: my $courselevelr=$ENV{'request.course.id'}.'.'.$symbparm;
800: my $courselevelm=$ENV{'request.course.id'}.'.'.$mapparm;
801:
802: my $storeunder='';
803: if (($snum==9) || ($snum==3)) { $storeunder=$courselevel; }
804: if (($snum==8) || ($snum==2)) { $storeunder=$courselevelm; }
805: if (($snum==7) || ($snum==1)) { $storeunder=$courselevelr; }
806: if ($snum==6) { $storeunder=$seclevel; }
807: if ($snum==5) { $storeunder=$seclevelm; }
808: if ($snum==4) { $storeunder=$seclevelr; }
809:
810: my $delete;
811: if ($ENV{'form.pres_value'} eq '') { $delete=1;}
812: my %storecontent = ($storeunder => $ENV{'form.pres_value'},
813: $storeunder.'.type' => $ENV{'form.pres_type'});
814: my $reply='';
815: if ($snum>3) {
816: # ---------------------------------------------------------------- Store Course
817: #
818: # Expire sheets
819: &Apache::lonnet::expirespread('','','studentcalc');
820: if (($snum==7) || ($snum==4)) {
821: &Apache::lonnet::expirespread('','','assesscalc',$symbp{$sresid});
822: } elsif (($snum==8) || ($snum==5)) {
823: &Apache::lonnet::expirespread('','','assesscalc',$mapp{$sresid});
824: } else {
825: &Apache::lonnet::expirespread('','','assesscalc');
826: }
827: # Store parameter
828: if ($delete) {
829: $reply=&Apache::lonnet::del
830: ('resourcedata',[keys(%storecontent)],
831: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
832: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
833: } else {
834: $reply=&Apache::lonnet::cput
835: ('resourcedata',\%storecontent,
836: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
837: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
838: }
839: } else {
840: # ------------------------------------------------------------------ Store User
841: #
842: # Expire sheets
843: &Apache::lonnet::expirespread($uname,$udom,'studentcalc');
844: if ($snum==1) {
845: &Apache::lonnet::expirespread
846: ($uname,$udom,'assesscalc',$symbp{$sresid});
847: } elsif ($snum==2) {
848: &Apache::lonnet::expirespread
849: ($uname,$udom,'assesscalc',$mapp{$sresid});
850: } else {
851: &Apache::lonnet::expirespread($uname,$udom,'assesscalc');
852: }
853: # Store parameter
854: if ($delete) {
855: $reply=&Apache::lonnet::del
856: ('resourcedata',[keys(%storecontent)],$udom,$uname);
857: } else {
858: $reply=&Apache::lonnet::cput
859: ('resourcedata',\%storecontent,$udom,$uname);
860: }
861: }
862:
863: if ($reply=~/^error\:(.*)/) {
864: $message.="<font color=red>Write Error: $1</font>";
865: }
866: # ---------------------------------------------------------------- Done storing
867: $message.='<h3>Changes can take up to 10 minutes before being active for all students.'.&Apache::loncommon::help_open_topic('Caching').'</h3>';
868: }
869: # --------------------------------------------- Devalidate cache for this child
870: &Apache::lonnet::devalidatecourseresdata(
871: $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
872: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'});
873: &Apache::lonnet::clear_EXT_cache_status();
874: # -------------------------------------------------------------- Get coursedata
875: %courseopt = &Apache::lonnet::dump
876: ('resourcedata',
877: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
878: $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
879: # --------------------------------------------------- Get userdata (if present)
880: if ($uname) {
881: %useropt=&Apache::lonnet::dump('resourcedata',$udom,$uname);
882: }
883:
884: # ------------------------------------------------------------------- Sort this
885:
886: @ids=sort {
887: if ($fcat eq '') {
888: $a<=>$b;
889: } else {
890: my ($result,@outpar)=&parmval($fcat,$a,$defp{$a});
891: my $aparm=$outpar[$result];
892: ($result,@outpar)=&parmval($fcat,$b,$defp{$b});
893: my $bparm=$outpar[$result];
894: 1*$aparm<=>1*$bparm;
895: }
896: } @ids;
897: #----------------------------------------------- if all selected, fill in array
898: if ($pscat[0] eq "all" || !@pscat) {@pscat = (keys %allparms);}
899: if ($psprt[0] eq "all" || !@psprt) {@psprt = (keys %allparts);}
900: # ------------------------------------------------------------------ Start page
901:
902: my $have_assesments=1;
903: if (scalar(keys(%allkeys)) eq 0) { $have_assesments=0; }
904:
905: &startpage($r,$id,$udom,$csec,$uname,$have_assesments);
906:
907: if (!$have_assesments) {
908: untie(%bighash);
909: untie(%parmhash);
910: return '';
911: }
912: # if ($ENV{'form.url'}) {
913: # $r->print('<input type="hidden" value="'.$ENV{'form.url'}.
914: # '" name="url"><input type="hidden" name="command" value="set">');
915: # }
916: $r->print('<input type="hidden" value="true" name="prevvisit">');
917:
918: foreach ('tolerance','date_default','date_start','date_end',
919: 'date_interval','int','float','string') {
920: $r->print('<input type="hidden" value="'.
921: $ENV{'form.recent_'.$_}.'" name="recent_'.$_.'">');
922: }
923:
924: $r->print('<h2>'.$message.'</h2><table>');
925:
926: my $submitmessage = 'Update Section or Specific User';
927: if (!$pssymb) {
928: $r->print('<tr><td>Select Parameter Level</td><td colspan="2">');
929: $r->print('<select name="parmlev">');
930: foreach (reverse sort keys %alllevs) {
931: $r->print('<option value="'.$alllevs{$_}.'"');
932: if ($parmlev eq $alllevs{$_}) {
933: $r->print(' selected');
934: }
935: $r->print('>'.$_.'</option>');
936: }
937: $r->print("</select></td>\n");
938:
939: $r->print('</tr>');
940:
941: $r->print('<tr><td>Select Enclosing Map or Folder</td>');
942: $r->print('<td colspan="2"><select name="pschp">');
943: $r->print('<option value="all">All Maps or Folders</option>');
944: foreach (sort {$allmaps{$a} cmp $allmaps{$b}} keys %allmaps) {
945: $r->print('<option value="'.$_.'"');
946: if (($pschp eq $_)) { $r->print(' selected'); }
947: $r->print('>'.$maptitles{$_}.($allmaps{$_}!~/^uploaded/?' ['.$allmaps{$_}.']':'').'</option>');
948: }
949: $r->print("</select></td></tr>\n");
950: } else {
951: my ($map,$id,$resource)=split(/___/,$pssymb);
952: $r->print("<tr><td>Specific Resource</td><td>$resource</td>");
953: $r->print('<td><input type="submit" name="dis" value="'.$submitmessage.'"></td>');
954: $r->print('</tr>');
955: $r->print('<input type="hidden" value="'.$pssymb.'" name="symb">');
956: }
957:
958: $r->print('<tr><td colspan="3"><hr /><input type="checkbox"');
959: if ($showoptions eq 'show') {$r->print(" checked ");}
960: $r->print(' name="showoptions" value="show">Show More Options<hr /></td></tr>');
961: # $r->print("<tr><td>Show: $showoptions</td></tr>");
962: # $r->print("<tr><td>pscat: @pscat</td></tr>");
963: # $r->print("<tr><td>psprt: @psprt</td></tr>");
964: # $r->print("<tr><td>fcat: $fcat</td></tr>");
965:
966: if ($showoptions eq 'show') {
967: my $tempkey;
968:
969: $r->print('<tr><td colspan="3" align="center">Select Parameters to View</td></tr>');
970:
971: $r->print('<tr><td colspan="2"><table>');
972: $r->print('<tr><td><input type="checkbox" name="pscat" value="all"');
973: $r->print(' checked') unless (@pscat);
974: $r->print('>All Parameters</td>');
975:
976: my $cnt=0;
977: foreach $tempkey (sort { $allparms{$a} cmp $allparms{$b} }
978: keys %allparms ) {
979: ++$cnt;
980: $r->print('</tr><tr>') unless ($cnt%2);
981: $r->print('<td><input type="checkbox" name="pscat" ');
982: $r->print('value="'.$tempkey.'"');
983: if ($pscat[0] eq "all" || grep $_ eq $tempkey, @pscat) {
984: $r->print(' checked');
985: }
986: $r->print('>'.$allparms{$tempkey}.'</td>');
987: }
988: $r->print('</tr></table>');
989:
990: # $r->print('<tr><td>Select Parts</td><td>');
991: $r->print('<td><select multiple name="psprt" size="5">');
992: $r->print('<option value="all"');
993: $r->print(' selected') unless (@psprt);
994: $r->print('>All Parts</option>');
995: my %temphash=();
996: foreach (@psprt) { $temphash{$_}=1; }
997: foreach $tempkey (sort keys %allparts) {
998: unless ($tempkey =~ /\./) {
999: $r->print('<option value="'.$tempkey.'"');
1000: if ($psprt[0] eq "all" || $temphash{$tempkey}) {
1001: $r->print(' selected');
1002: }
1003: $r->print('>'.$allparts{$tempkey}.'</option>');
1004: }
1005: }
1006: $r->print('</select></td></tr><tr><td colspan="3"><hr /></td></tr>');
1007:
1008: $r->print('<tr><td>Sort list by</td><td>');
1009: $r->print('<select name="fcat">');
1010: $r->print('<option value="">Enclosing Map or Folder</option>');
1011: foreach (sort keys %allkeys) {
1012: $r->print('<option value="'.$_.'"');
1013: if ($fcat eq $_) { $r->print(' selected'); }
1014: $r->print('>'.$allkeys{$_}.'</option>');
1015: }
1016: $r->print('</select></td>');
1017:
1018: $r->print('</tr><tr><td colspan="3"><hr /></td></tr>');
1019:
1020: } else { # hide options - include any necessary extras here
1021:
1022: $r->print('<input type="hidden" name="fcat" value="'.$fcat.'">'."\n");
1023:
1024: unless (@pscat) {
1025: foreach (keys %allparms ) {
1026: $r->print('<input type="hidden" name="pscat" value="'.$_.'">'."\n");
1027: }
1028: } else {
1029: foreach (@pscat) {
1030: $r->print('<input type="hidden" name="pscat" value="'.$_.'">'."\n");
1031: }
1032: }
1033:
1034: unless (@psprt) {
1035: foreach (keys %allparts ) {
1036: $r->print('<input type="hidden" name="psprt" value="'.$_.'">'."\n");
1037: }
1038: } else {
1039: foreach (@psprt) {
1040: $r->print('<input type="hidden" name="psprt" value="'.$_.'">'."\n");
1041: }
1042: }
1043:
1044: }
1045: $r->print('</table><br />');
1046: if (($prevvisit) || ($pschp) || ($pssymb)) {
1047: $submitmessage = "Update Course Assessment Parameter Display";
1048: } else {
1049: $submitmessage = "Set/Modify Course Assessment Parameters";
1050: }
1051: $r->print('<input type="submit" name="dis" value="'.$submitmessage.'">');
1052:
1053: # my @temp_psprt;
1054: # foreach my $t (@psprt) {
1055: # push(@temp_psprt, grep {eval (/^$t\./ || ($_ == $t))} (keys %allparts));
1056: # }
1057:
1058: # @psprt = @temp_psprt;
1059:
1060: my @temp_pscat;
1061: map {
1062: my $cat = $_;
1063: push(@temp_pscat, map { $_.'.'.$cat } @psprt);
1064: } @pscat;
1065:
1066: @pscat = @temp_pscat;
1067:
1068: if (($prevvisit) || ($pschp) || ($pssymb)) {
1069: # ----------------------------------------------------------------- Start Table
1070: my @catmarker=map { tr|.|_|; 'parameter_'.$_; } @pscat;
1071: my $csuname=$ENV{'user.name'};
1072: my $csudom=$ENV{'user.domain'};
1073:
1074: if ($parmlev eq 'full' || $parmlev eq 'brief') {
1075: my $coursespan=$csec?8:5;
1076: $r->print('<p><table border=2>');
1077: $r->print('<tr><td colspan=5></td>');
1078: $r->print('<th colspan='.($coursespan).'>Any User</th>');
1079: if ($uname) {
1080: $r->print("<th colspan=3 rowspan=2>");
1081: $r->print("User $uname at Domain $udom</th>");
1082: }
1083: $r->print(<<ENDTABLETWO);
1084: <th rowspan=3>Parameter in Effect</th>
1085: <th rowspan=3>Current Session Value<br>($csuname at $csudom)</th>
1086: </tr><tr><td colspan=5></td><th colspan=2>Resource Level</th>
1087: <th colspan=3>in Course</th>
1088: ENDTABLETWO
1089: if ($csec) {
1090: $r->print("<th colspan=3>in Section/Group $csec</th>");
1091: }
1092: $r->print(<<ENDTABLEHEADFOUR);
1093: </tr><tr><th>Assessment URL and Title</th><th>Type</th>
1094: <th>Enclosing Map or Folder</th><th>Part</th><th>Parameter Name</th>
1095: <th>default</th><th>from Enclosing Map or Folder</th>
1096: <th>general</th><th>for Enclosing Map or Folder</th><th>for Resource</th>
1097: ENDTABLEHEADFOUR
1098:
1099: if ($csec) {
1100: $r->print('<th>general</th><th>for Enclosing Map or Folder</th><th>for Resource</th>');
1101: }
1102:
1103: if ($uname) {
1104: $r->print('<th>general</th><th>for Enclosing Map or Folder</th><th>for Resource</th>');
1105: }
1106:
1107: $r->print('</tr>');
1108:
1109: my $defbgone='';
1110: my $defbgtwo='';
1111:
1112: foreach (@ids) {
1113:
1114: my $rid=$_;
1115: my ($inmapid)=($rid=~/\.(\d+)$/);
1116:
1117: if (($pschp eq 'all') || ($allmaps{$pschp} eq $mapp{$rid}) ||
1118: ($pssymb eq $symbp{$rid})) {
1119: # ------------------------------------------------------ Entry for one resource
1120: if ($defbgone eq '"E0E099"') {
1121: $defbgone='"E0E0DD"';
1122: } else {
1123: $defbgone='"E0E099"';
1124: }
1125: if ($defbgtwo eq '"FFFF99"') {
1126: $defbgtwo='"FFFFDD"';
1127: } else {
1128: $defbgtwo='"FFFF99"';
1129: }
1130: my $thistitle='';
1131: my %name= ();
1132: undef %name;
1133: my %part= ();
1134: my %display=();
1135: my %type= ();
1136: my %default=();
1137: my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});
1138:
1139: foreach (split(/\,/,$keyp{$rid})) {
1140: my $tempkeyp = $_;
1141: if (grep $_ eq $tempkeyp, @catmarker) {
1142: $part{$_}=&Apache::lonnet::metadata($uri,$_.'.part');
1143: $name{$_}=&Apache::lonnet::metadata($uri,$_.'.name');
1144: $display{$_}=&Apache::lonnet::metadata($uri,$_.'.display');
1145: unless ($display{$_}) { $display{$_}=''; }
1146: $display{$_}.=' ('.$name{$_}.')';
1147: $default{$_}=&Apache::lonnet::metadata($uri,$_);
1148: $type{$_}=&Apache::lonnet::metadata($uri,$_.'.type');
1149: $thistitle=&Apache::lonnet::metadata($uri,$_.'.title');
1150: }
1151: }
1152: my $totalparms=scalar keys %name;
1153: if ($totalparms>0) {
1154: my $firstrow=1;
1155:
1156: $r->print('<tr><td bgcolor='.$defbgone.
1157: ' rowspan='.$totalparms.
1158: '><tt><font size=-1>'.
1159: join(' / ',split(/\//,$uri)).
1160: '</font></tt><p><b>'.
1161: "<a href=\"javascript:openWindow('/res/".$uri.
1162: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
1163: " TARGET=_self>$bighash{'title_'.$rid}");
1164:
1165: if ($thistitle) {
1166: $r->print(' ('.$thistitle.')');
1167: }
1168: $r->print('</a></b></td>');
1169: $r->print('<td bgcolor='.$defbgtwo.
1170: ' rowspan='.$totalparms.'>'.$typep{$rid}.
1171: '</td>');
1172:
1173: $r->print('<td bgcolor='.$defbgone.
1174: ' rowspan='.$totalparms.
1175: '><tt><font size=-1>');
1176:
1177: $r->print(' / res / ');
1178: $r->print(join(' / ', split(/\//,$mapp{$rid})));
1179:
1180: $r->print('</font></tt></td>');
1181:
1182: foreach (sort keys %name) {
1183: unless ($firstrow) {
1184: $r->print('<tr>');
1185: } else {
1186: undef $firstrow;
1187: }
1188:
1189: &print_row($r,$_,\%part,\%name,$rid,\%default,
1190: \%type,\%display,$defbgone,$defbgtwo,
1191: $parmlev);
1192: }
1193: }
1194: }
1195: } # end foreach ids
1196: # -------------------------------------------------- End entry for one resource
1197: $r->print('</table>');
1198: } # end of brief/full
1199: #--------------------------------------------------- Entry for parm level map
1200: if ($parmlev eq 'map') {
1201: my $defbgone = '"E0E099"';
1202: my $defbgtwo = '"FFFF99"';
1203:
1204: my %maplist;
1205:
1206: if ($pschp eq 'all') {
1207: %maplist = %allmaps;
1208: } else {
1209: %maplist = ($pschp => $mapp{$pschp});
1210: }
1211:
1212: #-------------------------------------------- for each map, gather information
1213: my $mapid;
1214: foreach $mapid (sort {$maplist{$a} cmp $maplist{$b}} keys %maplist) {
1215: my $maptitle = $maplist{$mapid};
1216:
1217: #----------------------- loop through ids and get all parameter types for map
1218: #----------------------------------------- and associated information
1219: my %name = ();
1220: my %part = ();
1221: my %display = ();
1222: my %type = ();
1223: my %default = ();
1224: my $map = 0;
1225:
1226: # $r->print("Catmarker: @catmarker<br />\n");
1227:
1228: foreach (@ids) {
1229: ($map)=(/([\d]*?)\./);
1230: my $rid = $_;
1231:
1232: # $r->print("$mapid:$map: $rid <br /> \n");
1233:
1234: if ($map eq $mapid) {
1235: my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});
1236: # $r->print("Keys: $keyp{$rid} <br />\n");
1237:
1238: #--------------------------------------------------------------------
1239: # @catmarker contains list of all possible parameters including part #s
1240: # $fullkeyp contains the full part/id # for the extraction of proper parameters
1241: # $tempkeyp contains part 0 only (no ids - ie, subparts)
1242: # When storing information, store as part 0
1243: # When requesting information, request from full part
1244: #-------------------------------------------------------------------
1245: foreach (split(/\,/,$keyp{$rid})) {
1246: my $tempkeyp = $_;
1247: my $fullkeyp = $tempkeyp;
1248: $tempkeyp =~ s/_\w+_/_0_/;
1249:
1250: if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
1251: $part{$tempkeyp}="0";
1252: $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
1253: $display{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
1254: unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
1255: $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
1256: $display{$tempkeyp} =~ s/_\w+_/_0_/;
1257: $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
1258: $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
1259: }
1260: } # end loop through keys
1261: }
1262: } # end loop through ids
1263:
1264: #---------------------------------------------------- print header information
1265: my $foldermap=($maptitle=~/^uploaded/?'Folder':'Map');
1266: my $showtitle=$maptitles{$maptitle}.($maptitle!~/^uploaded/?' ['.$maptitle.']':'');
1267: $r->print(<<ENDMAPONE);
1268: <center><h4>
1269: <font color="red">Set Defaults for All Resources in $foldermap<br />
1270: <i>$showtitle</i><br />
1271: Specifically for
1272: ENDMAPONE
1273: if ($uname) {
1274: my %name=&Apache::lonnet::userenvironment($udom,$uname,
1275: ('firstname','middlename','lastname','generation', 'id'));
1276: my $person=$name{'firstname'}.' '.$name{'middlename'}.' '
1277: .$name{'lastname'}.' '.$name{'generation'};
1278: $r->print("User <i>$uname \($person\) </i> in \n");
1279: } else {
1280: $r->print("<i>all</i> users in \n");
1281: }
1282:
1283: if ($csec) {$r->print("Section <i>$csec</i> of \n")};
1284:
1285: $r->print("<i>$coursename</i><br />");
1286: $r->print("</font></h4>\n");
1287: #---------------------------------------------------------------- print table
1288: $r->print('<p><table border="2">');
1289: $r->print('<tr><th>Parameter Name</th>');
1290: $r->print('<th>Default Value</th>');
1291: $r->print('<th>Parameter in Effect</th></tr>');
1292:
1293: foreach (sort keys %name) {
1294: &print_row($r,$_,\%part,\%name,$mapid,\%default,
1295: \%type,\%display,$defbgone,$defbgtwo,
1296: $parmlev);
1297: # $r->print("<tr><td>resource.$part{$_}.$name{$_},$symbp{$mapid}</td></tr>\n");
1298: }
1299: $r->print("</table></center>");
1300: } # end each map
1301: } # end of $parmlev eq map
1302: #--------------------------------- Entry for parm level general (Course level)
1303: if ($parmlev eq 'general') {
1304: my $defbgone = '"E0E099"';
1305: my $defbgtwo = '"FFFF99"';
1306:
1307: #-------------------------------------------- for each map, gather information
1308: my $mapid="0.0";
1309: #----------------------- loop through ids and get all parameter types for map
1310: #----------------------------------------- and associated information
1311: my %name = ();
1312: my %part = ();
1313: my %display = ();
1314: my %type = ();
1315: my %default = ();
1316:
1317: foreach (@ids) {
1318: my $rid = $_;
1319:
1320: my $uri=&Apache::lonnet::declutter($bighash{'src_'.$rid});
1321:
1322: #--------------------------------------------------------------------
1323: # @catmarker contains list of all possible parameters including part #s
1324: # $fullkeyp contains the full part/id # for the extraction of proper parameters
1325: # $tempkeyp contains part 0 only (no ids - ie, subparts)
1326: # When storing information, store as part 0
1327: # When requesting information, request from full part
1328: #-------------------------------------------------------------------
1329: foreach (split(/\,/,$keyp{$rid})) {
1330: my $tempkeyp = $_;
1331: my $fullkeyp = $tempkeyp;
1332: $tempkeyp =~ s/_\w+_/_0_/;
1333: if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
1334: $part{$tempkeyp}="0";
1335: $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
1336: $display{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
1337: unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
1338: $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
1339: $display{$tempkeyp} =~ s/_\w+_/_0_/;
1340: $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
1341: $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
1342: }
1343: } # end loop through keys
1344: } # end loop through ids
1345:
1346: #---------------------------------------------------- print header information
1347: $r->print(<<ENDMAPONE);
1348: <center><h4>
1349: <font color="red">Set Defaults for All Resources in Course
1350: <i>$coursename</i><br />
1351: ENDMAPONE
1352: if ($uname) {
1353: my %name=&Apache::lonnet::userenvironment($udom,$uname,
1354: ('firstname','middlename','lastname','generation', 'id'));
1355: my $person=$name{'firstname'}.' '.$name{'middlename'}.' '
1356: .$name{'lastname'}.' '.$name{'generation'};
1357: $r->print(" User <i>$uname \($person\) </i> \n");
1358: } else {
1359: $r->print("<i>ALL</i> USERS \n");
1360: }
1361:
1362: if ($csec) {$r->print("Section <i>$csec</i>\n")};
1363: $r->print("</font></h4>\n");
1364: #---------------------------------------------------------------- print table
1365: $r->print('<p><table border="2">');
1366: $r->print('<tr><th>Parameter Name</th>');
1367: $r->print('<th>Default Value</th>');
1368: $r->print('<th>Parameter in Effect</th></tr>');
1369:
1370: foreach (sort keys %name) {
1371: &print_row($r,$_,\%part,\%name,$mapid,\%default,
1372: \%type,\%display,$defbgone,$defbgtwo,$parmlev);
1373: # $r->print("<tr><td>resource.$part{$_}.$name{$_},$symbp{$mapid}</td></tr>\n");
1374: }
1375: $r->print("</table></center>");
1376: } # end of $parmlev eq general
1377: }
1378: $r->print('</form></body></html>');
1379: untie(%bighash);
1380: untie(%parmhash);
1381: } # end sub assessparms
1382:
1383:
1384: ##################################################
1385: ##################################################
1386:
1387: =pod
1388:
1389: =item crsenv
1390:
1391: Show and set course data and parameters. This is a large routine that should
1392: be simplified and shortened... someday.
1393:
1394: Inputs: $r
1395:
1396: Returns: nothing
1397:
1398: =cut
1399:
1400: ##################################################
1401: ##################################################
1402: sub crsenv {
1403: my $r=shift;
1404: my $setoutput='';
1405: my $bodytag=&Apache::loncommon::bodytag(
1406: 'Set Course Environment Parameters');
1407: my $dom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1408: my $crs = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1409:
1410: #
1411: # Go through list of changes
1412: foreach (keys %ENV) {
1413: next if ($_!~/^form\.(.+)\_setparmval$/);
1414: my $name = $1;
1415: my $value = $ENV{'form.'.$name.'_value'};
1416: if ($name eq 'newp') {
1417: $name = $ENV{'form.newp_name'};
1418: }
1419: if ($name eq 'url') {
1420: $value=~s/^\/res\///;
1421: my $bkuptime=time;
1422: my @tmp = &Apache::lonnet::get
1423: ('environment',['url'],$dom,$crs);
1424: $setoutput.='Backing up previous URL: '.
1425: &Apache::lonnet::put
1426: ('environment',
1427: {'top level map backup '.$bkuptime => $tmp[1] },
1428: $dom,$crs).
1429: '<br>';
1430: }
1431: #
1432: # Deal with modified default spreadsheets
1433: if ($name =~ /^spreadsheet_default_(classcalc|
1434: studentcalc|
1435: assesscalc)$/x) {
1436: my $sheettype = $1;
1437: if ($sheettype eq 'classcalc') {
1438: # no need to do anything since viewing the sheet will
1439: # cause it to be updated.
1440: } elsif ($sheettype eq 'studentcalc') {
1441: # expire all the student spreadsheets
1442: &Apache::lonnet::expirespread('','','studentcalc');
1443: } else {
1444: # expire all the assessment spreadsheets
1445: # this includes non-default spreadsheets, but better to
1446: # be safe than sorry.
1447: &Apache::lonnet::expirespread('','','assesscalc');
1448: # expire all the student spreadsheets
1449: &Apache::lonnet::expirespread('','','studentcalc');
1450: }
1451: }
1452: #
1453: # Deal with the enrollment dates
1454: if ($name =~ /^default_enrollment_(start|end)_date$/) {
1455: $value=&Apache::lonhtmlcommon::get_date_from_form($name.'_value');
1456: }
1457: #
1458: # Let the user know we made the changes
1459: if ($name) {
1460: my $put_result = &Apache::lonnet::put('environment',
1461: {$name=>$value},$dom,$crs);
1462: if ($put_result eq 'ok') {
1463: $setoutput.='Set <b>'.$name.'</b> to <b>'.$value.'</b>.<br />';
1464: } else {
1465: $setoutput.='Unable to set <b>'.$name.'</b> to '.
1466: '<b>'.$value.'</b> due to '.$put_result.'.<br />';
1467: }
1468: }
1469: }
1470: # ------------------------- Re-init course environment entries for this session
1471:
1472: &Apache::lonnet::coursedescription($ENV{'request.course.id'});
1473:
1474: # -------------------------------------------------------- Get parameters again
1475:
1476: my %values=&Apache::lonnet::dump('environment',$dom,$crs);
1477: my $output='';
1478: if (! exists($values{'con_lost'})) {
1479: my %descriptions=
1480: ('url' => '<b>Top Level Map</b> '.
1481: '<a href="javascript:openbrowser'.
1482: "('envform','url','sequence')\">".
1483: 'Select Map</a><br /><font color=red> '.
1484: 'Modification may make assessment data '.
1485: 'inaccessible</font>',
1486: 'description' => '<b>Course Description</b>',
1487: 'courseid' => '<b>Course ID or number</b><br />'.
1488: '(internal, optional)',
1489: 'grading' => '<b>Grading</b>'.
1490: '"standard" or any other value. '.
1491: 'Default for new courses is "standard".',
1492:
1493: 'default_xml_style' => '<b>Default XML Style File</b> '.
1494: '<a href="javascript:openbrowser'.
1495: "('envform','default_xml_style'".
1496: ",'sty')\">Select Style File</a><br>",
1497: 'question.email' => '<b>Feedback Addresses for Resource Content '.
1498: 'Questions</b><br />(<tt>user:domain,'.
1499: 'user:domain(section;section;...;*;...),...</tt>)',
1500: 'comment.email' => '<b>Feedback Addresses for Course Content Comments</b><br />'.
1501: '(<tt>user:domain,user:domain(section;section;...;*;...),...</tt>)',
1502: 'policy.email' => '<b>Feedback Addresses for Course Policy</b>'.
1503: '<br />(<tt>user:domain,user:domain(section;section;...;*;...),...</tt>)',
1504: 'hideemptyrows' => '<b>Hide Empty Rows in Spreadsheets</b><br />'.
1505: '("<tt>yes</tt>" for default hiding)',
1506: 'pageseparators' => '<b>Visibly Separate Items on Pages</b><br />'.
1507: '("<tt>yes</tt>" for visible separation, '.
1508: 'changes will not show until next login)',
1509:
1510: 'plc.roles.denied'=> '<b>Disallow live chatroom use for '.
1511: 'Roles</b><br />"<tt>st</tt>": '.
1512: 'student, "<tt>ta</tt>": '.
1513: 'TA, "<tt>in</tt>": '.
1514: 'instructor;<br /><tt>role,role,...</tt>) '.
1515: Apache::loncommon::help_open_topic("Course_Disable_Discussion"),
1516: 'plc.users.denied' =>
1517: '<b>Disallow live chatroom use for Users</b><br />'.
1518: '(<tt>user:domain,user:domain,...</tt>)',
1519:
1520: 'pch.roles.denied'=> '<b>Disallow Resource Discussion for '.
1521: 'Roles</b><br />"<tt>st</tt>": '.
1522: 'student, "<tt>ta</tt>": '.
1523: 'TA, "<tt>in</tt>": '.
1524: 'instructor;<br /><tt>role,role,...</tt>) '.
1525: Apache::loncommon::help_open_topic("Course_Disable_Discussion"),
1526: 'pch.users.denied' =>
1527: '<b>Disallow Resource Discussion for Users</b><br />'.
1528: '(<tt>user:domain,user:domain,...</tt>)',
1529: 'spreadsheet_default_classcalc'
1530: => '<b>Default Course Spreadsheet</b> '.
1531: '<a href="javascript:openbrowser'.
1532: "('envform','spreadsheet_default_classcalc'".
1533: ",'spreadsheet')\">Select Spreadsheet File</a><br />",
1534: 'spreadsheet_default_studentcalc'
1535: => '<b>Default Student Spreadsheet</b> '.
1536: '<a href="javascript:openbrowser'.
1537: "('envform','spreadsheet_default_calc'".
1538: ",'spreadsheet')\">Select Spreadsheet File</a><br />",
1539: 'spreadsheet_default_assesscalc'
1540: => '<b>Default Assessment Spreadsheet</b> '.
1541: '<a href="javascript:openbrowser'.
1542: "('envform','spreadsheet_default_assesscalc'".
1543: ",'spreadsheet')\">Select Spreadsheet File</a><br />",
1544: 'allow_limited_html_in_feedback'
1545: => '<b>Allow limited HTML in discussion posts</b><br />'.
1546: '(Set value to "<tt>yes</tt>" to allow)',
1547: 'rndseed'
1548: => '<b>Randomization algorithm used</b> <br />'.
1549: '<font color="red">Modifying this will make problems '.
1550: 'have different numbers and answers</font>',
1551: 'problem_stream_switch'
1552: => '<b>Allow problems to be split over pages</b><br />'.
1553: ' ("<tt>yes</tt>" if allowed, anything else if not)',
1554: 'anonymous_quiz'
1555: => '<b>Anonimous quiz/exam</b><br />'.
1556: ' (<tt><b>yes</b> to avoid print students names </tt>)',
1557: 'default_enrollment_start_date' => '<b>Default beginning date '.
1558: 'when enrolling students</b>',
1559: 'default_enrollment_end_date' => '<b>Default ending date '.
1560: 'when enrolling students</b>',
1561: 'languages' => '<b>Languages used</b>',
1562: 'disable_receipt_display'
1563: => '<b>Disable display of problem receipts</b><br />'.
1564: ' ("<tt>yes</tt>" to disable, anything else if not)'
1565: );
1566: my @Display_Order = ('url','description','courseid','grading',
1567: 'default_xml_style','pageseparators',
1568: 'question.email','comment.email','policy.email',
1569: 'plc.roles.denied','plc.users.denied',
1570: 'pch.roles.denied','pch.users.denied',
1571: 'allow_limited_html_in_feedback',
1572: 'languages',
1573: 'rndseed',
1574: 'problem_stream_switch',
1575: 'disable_receipt_display',
1576: 'spreadsheet_default_classcalc',
1577: 'spreadsheet_default_studentcalc',
1578: 'spreadsheet_default_assesscalc',
1579: 'hideemptyrows',
1580: 'default_enrollment_start_date',
1581: 'default_enrollment_end_date',
1582: );
1583: foreach my $parameter (sort(keys(%values))) {
1584: if (! $descriptions{$parameter}) {
1585: $descriptions{$parameter}=$parameter;
1586: push(@Display_Order,$parameter);
1587: }
1588: }
1589: foreach my $parameter (@Display_Order) {
1590: my $description = $descriptions{$parameter};
1591: # onchange is javascript to automatically check the 'Set' button.
1592: my $onchange = 'onFocus="javascript:window.document.forms'.
1593: "['envform'].elements['".$parameter."_setparmval']".
1594: '.checked=true;"';
1595: $output .= '<tr><td>'.$description.'</td>';
1596: if ($parameter =~ /^default_enrollment_(start|end)_date$/) {
1597: $output .= '<td>'.
1598: &Apache::lonhtmlcommon::date_setter('envform',
1599: $parameter.'_value',
1600: $values{$parameter},
1601: $onchange).
1602: '</td>';
1603: } else {
1604: $output .= '<td>'.
1605: &Apache::lonhtmlcommon::textbox($parameter.'_value',
1606: $values{$parameter},
1607: 40,$onchange).'</td>';
1608: }
1609: $output .= '<td>'.
1610: &Apache::lonhtmlcommon::checkbox($parameter.'_setparmval').
1611: '</td>';
1612: $output .= "</tr>\n";
1613: }
1614: my $onchange = 'onFocus="javascript:window.document.forms'.
1615: '[\'envform\'].elements[\'newp_setparmval\']'.
1616: '.checked=true;"';
1617: $output.='<tr><td><i>Create New Environment Variable</i><br />'.
1618: '<input type="text" size=40 name="newp_name" '.
1619: $onchange.' /></td><td>'.
1620: '<input type="text" size=40 name="newp_value" '.
1621: $onchange.' /></td><td>'.
1622: '<input type="checkbox" name="newp_setparmval" /></td></tr>';
1623: }
1624: $r->print(<<ENDENV);
1625: <html>
1626: <script type="text/javascript" language="Javascript" >
1627: var editbrowser;
1628: function openbrowser(formname,elementname,only,omit) {
1629: var url = '/res/?';
1630: if (editbrowser == null) {
1631: url += 'launch=1&';
1632: }
1633: url += 'catalogmode=interactive&';
1634: url += 'mode=parmset&';
1635: url += 'form=' + formname + '&';
1636: if (only != null) {
1637: url += 'only=' + only + '&';
1638: }
1639: if (omit != null) {
1640: url += 'omit=' + omit + '&';
1641: }
1642: url += 'element=' + elementname + '';
1643: var title = 'Browser';
1644: var options = 'scrollbars=1,resizable=1,menubar=0';
1645: options += ',width=700,height=600';
1646: editbrowser = open(url,title,options,'1');
1647: editbrowser.focus();
1648: }
1649: </script>
1650: <head>
1651: <title>LON-CAPA Course Environment</title>
1652: </head>
1653: $bodytag
1654: <form method="post" action="/adm/parmset" name="envform">
1655: $setoutput
1656: <p>
1657: <table border=2>
1658: <tr><th>Parameter</th><th>Value</th><th>Set?</th></tr>
1659: $output
1660: </table>
1661: <input type="submit" name="crsenv" value="Set Course Environment">
1662: </form>
1663: </body>
1664: </html>
1665: ENDENV
1666: }
1667: ##################################################
1668:
1669: my $tableopen;
1670:
1671: sub tablestart {
1672: if ($tableopen) {
1673: return '';
1674: } else {
1675: $tableopen=1;
1676: return '<table border="2"><tr><th>Parameter</th><th>Delete</th><th>Set to ...</th></tr>';
1677: }
1678: }
1679:
1680: sub tableend {
1681: if ($tableopen) {
1682: $tableopen=0;
1683: return '</table>';
1684: } else {
1685: return'';
1686: }
1687: }
1688:
1689: sub overview {
1690: my $r=shift;
1691: my $bodytag=&Apache::loncommon::bodytag(
1692: 'Set/Modify Course Assessment Parameters');
1693: my $dom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1694: my $crs = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1695: $r->print(<<ENDOVER);
1696: <html>
1697: <head>
1698: <title>LON-CAPA Course Environment</title>
1699: </head>
1700: $bodytag
1701: <form method="post" action="/adm/parmset" name="overviewform">
1702: <input type="hidden" name="overview" value="1" />
1703: ENDOVER
1704: # Setting
1705: my %olddata=&Apache::lonnet::dump('resourcedata',$dom,$crs);
1706: my %newdata=();
1707: undef %newdata;
1708: my @deldata=();
1709: undef @deldata;
1710: foreach (keys %ENV) {
1711: if ($_=~/^form\.([a-z]+)\_(.+)$/) {
1712: my $cmd=$1;
1713: my $thiskey=$2;
1714: if ($cmd eq 'set') {
1715: my $data=$ENV{$_};
1716: if ($olddata{$thiskey} ne $data) { $newdata{$thiskey}=$data; }
1717: } elsif ($cmd eq 'del') {
1718: push (@deldata,$thiskey);
1719: } elsif ($cmd eq 'datepointer') {
1720: my $data=&Apache::lonhtmlcommon::get_date_from_form($ENV{$_});
1721: if ($olddata{$thiskey} ne $data) { $newdata{$thiskey}=$data; }
1722: }
1723: }
1724: }
1725: # Store
1726: &Apache::lonnet::del('resourcedata',\@deldata,$dom,$crs);
1727: &Apache::lonnet::put('resourcedata',\%newdata,$dom,$crs);
1728: # Read and display
1729: my %resourcedata=&Apache::lonnet::dump('resourcedata',$dom,$crs);
1730: my $oldsection='';
1731: my $oldrealm='';
1732: my $oldpart='';
1733: my $pointer=0;
1734: $tableopen=0;
1735: foreach my $thiskey (sort keys %resourcedata) {
1736: if ($resourcedata{$thiskey.'.type'}) {
1737: my ($course,$middle,$part,$name)=
1738: ($thiskey=~/^(\w+)\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
1739: my $section='All Students';
1740: if ($middle=~/^\[(.*)\]\./) {
1741: $section='Group/Section: '.$1;
1742: $middle=~s/^\[(.*)\]\.//;
1743: }
1744: $middle=~s/\.$//;
1745: my $realm='<font color="red">All Resources</font>';
1746: if ($middle=~/^(.+)\_\_\_\(all\)$/) {
1747: $realm='<font color="green">Folder/Map: '.&Apache::lonnet::gettitle($1).'</font>';
1748: } elsif ($middle) {
1749: $realm='<font color="orange">Resource: '.&Apache::lonnet::gettitle($middle).'</font>';
1750: }
1751: if ($section ne $oldsection) {
1752: $r->print(&tableend()."\n<hr /><h1>$section</h1>");
1753: $oldsection=$section;
1754: $oldrealm='';
1755: }
1756: if ($realm ne $oldrealm) {
1757: $r->print(&tableend()."\n<h2>$realm</h2>");
1758: $oldrealm=$realm;
1759: $oldpart='';
1760: }
1761: if ($part ne $oldpart) {
1762: $r->print(&tableend().
1763: "\n<h3><font color='blue'>Part: $part</font></h3>");
1764: $oldpart=$part;
1765: }
1766: #
1767: # Ready to print
1768: #
1769: $r->print(&tablestart().'<tr><td><b>'.$name.
1770: ':</b></td><td><input type="checkbox" name="del_'.
1771: $thiskey.'" /></td><td>');
1772: if ($resourcedata{$thiskey.'.type'}=~/^date/) {
1773: my $jskey='key_'.$pointer;
1774: $pointer++;
1775: $r->print(
1776: &Apache::lonhtmlcommon::date_setter('overviewform',
1777: $jskey,
1778: $resourcedata{$thiskey}).
1779: '<input type="hidden" name="datepointer_'.$thiskey.'" value="'.$jskey.'" />'
1780: );
1781: } else {
1782: $r->print(
1783: '<input type="text" name="set_'.$thiskey.'" value="'.
1784: $resourcedata{$thiskey}.'">');
1785: }
1786: $r->print('</td></tr>');
1787: }
1788: }
1789:
1790: $r->print(&tableend().
1791: '<p><input type="submit" value="Modify Parameters" /></p></form></body></html>');
1792: }
1793:
1794: ##################################################
1795: ##################################################
1796:
1797: =pod
1798:
1799: =item * handler
1800:
1801: Main handler. Calls &assessparms and &crsenv subroutines.
1802:
1803: =cut
1804:
1805: ##################################################
1806: ##################################################
1807: use Data::Dumper;
1808: sub handler {
1809: my $r=shift;
1810:
1811: if ($r->header_only) {
1812: $r->content_type('text/html');
1813: $r->send_http_header;
1814: return OK;
1815: }
1816: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
1817:
1818: # ----------------------------------------------------- Needs to be in a course
1819:
1820: if (($ENV{'request.course.id'}) &&
1821: (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'}))) {
1822:
1823: $r->content_type('text/html');
1824: $r->send_http_header;
1825:
1826: $coursename=$ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1827:
1828: if (($ENV{'form.crsenv'}) || (!$ENV{'request.course.fn'})) {
1829: # ---------------------------------------------- This is for course environment
1830: # -------------------------- also call if toplevel map coudl not be initialized
1831: &crsenv($r);
1832: } elsif ($ENV{'form.overview'}) {
1833: # --------------------------------------------------------------- Overview mode
1834: &overview($r);
1835: } else {
1836: # --------------------------------------------------------- Bring up assessment
1837: &assessparms($r);
1838: }
1839: } else {
1840: # ----------------------------- Not in a course, or not allowed to modify parms
1841: $ENV{'user.error.msg'}=
1842: "/adm/parmset:opa:0:0:Cannot modify assessment parameters";
1843: return HTTP_NOT_ACCEPTABLE;
1844: }
1845: return OK;
1846: }
1847:
1848: 1;
1849: __END__
1850:
1851: =pod
1852:
1853: =back
1854:
1855: =cut
1856:
1857:
1858:
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