1: #
2: # $Id: lonspreadsheet.pm,v 1.90 2002/05/30 13:37:09 www Exp $
3: #
4: # Copyright Michigan State University Board of Trustees
5: #
6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
7: #
8: # LON-CAPA is free software; you can redistribute it and/or modify
9: # it under the terms of the GNU General Public License as published by
10: # the Free Software Foundation; either version 2 of the License, or
11: # (at your option) any later version.
12: #
13: # LON-CAPA is distributed in the hope that it will be useful,
14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: # GNU General Public License for more details.
17: #
18: # You should have received a copy of the GNU General Public License
19: # along with LON-CAPA; if not, write to the Free Software
20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: #
22: # /home/httpd/html/adm/gpl.txt
23: #
24: # http://www.lon-capa.org/
25: #
26: # The LearningOnline Network with CAPA
27: # Spreadsheet/Grades Display Handler
28: #
29: # 11/11,11/15,11/27,12/04,12/05,12/06,12/07,
30: # 12/08,12/09,12/11,12/12,12/15,12/16,12/18,12/19,12/30,
31: # 01/01/01,02/01,03/01,19/01,20/01,22/01,
32: # 03/05,03/08,03/10,03/12,03/13,03/15,03/17,
33: # 03/19,03/20,03/21,03/27,04/05,04/09,
34: # 07/09,07/14,07/21,09/01,09/10,9/11,9/12,9/13,9/14,9/17,
35: # 10/16,10/17,10/20,11/05,11/28,12/27 Gerd Kortemeyer
36: # 01/14/02 Matthew
37: # 02/04/02 Matthew
38:
39: # POD required stuff:
40:
41: =head1 NAME
42:
43: lonspreadsheet
44:
45: =head1 SYNOPSIS
46:
47: Spreadsheet interface to internal LON-CAPA data
48:
49: =head1 DESCRIPTION
50:
51: Lonspreadsheet provides course coordinators the ability to manage their
52: students grades online. The students are able to view their own grades, but
53: not the grades of their peers. The spreadsheet is highly customizable,
54: offering the ability to use Perl code to manipulate data, as well as many
55: built-in functions.
56:
57:
58: =head2 Functions available to user of lonspreadsheet
59:
60: =over 4
61:
62: =cut
63:
64: package Apache::lonspreadsheet;
65:
66: use strict;
67: use Safe;
68: use Safe::Hole;
69: use Opcode;
70: use Apache::lonnet;
71: use Apache::Constants qw(:common :http);
72: use GDBM_File;
73: use HTML::TokeParser;
74:
75: #
76: # Caches for previously calculated spreadsheets
77: #
78:
79: my %oldsheets;
80: my %loadedcaches;
81: my %expiredates;
82:
83: #
84: # Cache for stores of an individual user
85: #
86:
87: my $cachedassess;
88: my %cachedstores;
89:
90: #
91: # These cache hashes need to be independent of user, resource and course
92: # (user and course can/should be in the keys)
93: #
94:
95: my %spreadsheets;
96: my %courserdatas;
97: my %userrdatas;
98: my %defaultsheets;
99: my %updatedata;
100:
101: #
102: # These global hashes are dependent on user, course and resource,
103: # and need to be initialized every time when a sheet is calculated
104: #
105: my %courseopt;
106: my %useropt;
107: my %parmhash;
108:
109: # Stuff that only the screen handler can know
110:
111: my $includedir;
112: my $tmpdir;
113:
114: # =============================================================================
115: # ===================================== Implements an instance of a spreadsheet
116:
117: sub initsheet {
118: my $safeeval = new Safe(shift);
119: my $safehole = new Safe::Hole;
120: $safeeval->permit("entereval");
121: $safeeval->permit(":base_math");
122: $safeeval->permit("sort");
123: $safeeval->deny(":base_io");
124: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
125: $safehole->wrap(\&send_msg, $safeeval,"&send_msg");
126: $safehole->wrap(\&send_crit_msg,$safeeval,"&send_crit_msg");
127: my $code=<<'ENDDEFS';
128: # ---------------------------------------------------- Inside of the safe space
129:
130: #
131: # f: formulas
132: # t: intermediate format (variable references expanded)
133: # v: output values
134: # c: preloaded constants (A-column)
135: # rl: row label
136: # os: other spreadsheets (for student spreadsheet only)
137:
138: undef %v;
139: undef %t;
140: undef %f;
141: undef %c;
142: undef %rl;
143: undef @os;
144:
145: $maxrow=0;
146: $sheettype='';
147:
148: # filename/reference of the sheet
149:
150: $filename='';
151:
152: # user data
153: $uname='';
154: $uhome='';
155: $udom='';
156:
157: # course data
158:
159: $csec='';
160: $chome='';
161: $cnum='';
162: $cdom='';
163: $cid='';
164: $cfn='';
165:
166: # symb
167:
168: $usymb='';
169:
170: sub mask {
171: my ($lower,$upper)=@_;
172:
173: $lower=~/([A-Za-z]|\*)(\d+|\*)/;
174: my $la=$1;
175: my $ld=$2;
176:
177: $upper=~/([A-Za-z]|\*)(\d+|\*)/;
178: my $ua=$1;
179: my $ud=$2;
180: my $alpha='';
181: my $num='';
182:
183: if (($la eq '*') || ($ua eq '*')) {
184: $alpha='[A-Za-z]';
185: } else {
186: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
187: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
188: $alpha='['.$la.'-'.$ua.']';
189: } else {
190: $alpha='['.$la.'-Za-'.$ua.']';
191: }
192: }
193:
194: if (($ld eq '*') || ($ud eq '*')) {
195: $num='\d+';
196: } else {
197: if (length($ld)!=length($ud)) {
198: $num.='(';
199: foreach ($ld=~m/\d/g) {
200: $num.='['.$_.'-9]';
201: }
202: if (length($ud)-length($ld)>1) {
203: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
204: }
205: $num.='|';
206: foreach ($ud=~m/\d/g) {
207: $num.='[0-'.$_.']';
208: }
209: $num.=')';
210: } else {
211: my @lda=($ld=~m/\d/g);
212: my @uda=($ud=~m/\d/g);
213: my $i; $j=0; $notdone=1;
214: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
215: if ($lda[$i]==$uda[$i]) {
216: $num.=$lda[$i];
217: $j=$i;
218: } else {
219: $notdone=0;
220: }
221: }
222: if ($j<$#lda-1) {
223: $num.='('.$lda[$j+1];
224: for ($i=$j+2;$i<=$#lda;$i++) {
225: $num.='['.$lda[$i].'-9]';
226: }
227: if ($uda[$j+1]-$lda[$j+1]>1) {
228: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
229: ($#lda-$j-1).'}';
230: }
231: $num.='|'.$uda[$j+1];
232: for ($i=$j+2;$i<=$#uda;$i++) {
233: $num.='[0-'.$uda[$i].']';
234: }
235: $num.=')';
236: } else {
237: if ($lda[$#lda]!=$uda[$#uda]) {
238: $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
239: }
240: }
241: }
242: }
243: return '^'.$alpha.$num."\$";
244: }
245:
246: #-------------------------------------------------------
247:
248: =item UWCALC(hashname,modules,units,date)
249:
250: returns the proportion of the module
251: weights not previously completed by the student.
252:
253: =over 4
254:
255: =item hashname
256:
257: name of the hash the module dates have been inserted into
258:
259: =item modules
260:
261: reference to a cell which contains a comma deliminated list of modules
262: covered by the assignment.
263:
264: =item units
265:
266: reference to a cell which contains a comma deliminated list of module
267: weights with respect to the assignment
268:
269: =item date
270:
271: reference to a cell which contains the date the assignment was completed.
272:
273: =back
274:
275: =cut
276:
277: #-------------------------------------------------------
278: sub UWCALC {
279: my ($hashname,$modules,$units,$date) = @_;
280: my @Modules = split(/,/,$modules);
281: my @Units = split(/,/,$units);
282: my $total_weight;
283: foreach (@Units) {
284: $total_weight += $_;
285: }
286: my $usum=0;
287: for (my $i=0; $i<=$#Modules; $i++) {
288: if (&HASH($hashname,$Modules[$i]) eq $date) {
289: $usum += $Units[$i];
290: }
291: }
292: return $usum/$total_weight;
293: }
294:
295: #-------------------------------------------------------
296:
297: =item CDLSUM(list)
298:
299: returns the sum of the elements in a cell which contains
300: a Comma Deliminate List of numerical values.
301: 'list' is a reference to a cell which contains a comma deliminated list.
302:
303: =cut
304:
305: #-------------------------------------------------------
306: sub CDLSUM {
307: my ($list)=@_;
308: my $sum;
309: foreach (split/,/,$list) {
310: $sum += $_;
311: }
312: return $sum;
313: }
314:
315: #-------------------------------------------------------
316:
317: =item CDLITEM(list,index)
318:
319: returns the item at 'index' in a Comma Deliminated List.
320:
321: =over 4
322:
323: =item list
324:
325: reference to a cell which contains a comma deliminated list.
326:
327: =item index
328:
329: the Perl index of the item requested (first element in list has
330: an index of 0)
331:
332: =back
333:
334: =cut
335:
336: #-------------------------------------------------------
337: sub CDLITEM {
338: my ($list,$index)=@_;
339: my @Temp = split/,/,$list;
340: return $Temp[$index];
341: }
342:
343: #-------------------------------------------------------
344:
345: =item CDLHASH(name,key,value)
346:
347: loads a comma deliminated list of keys into
348: the hash 'name', all with a value of 'value'.
349:
350: =over 4
351:
352: =item name
353:
354: name of the hash.
355:
356: =item key
357:
358: (a pointer to) a comma deliminated list of keys.
359:
360: =item value
361:
362: a single value to be entered for each key.
363:
364: =back
365:
366: =cut
367:
368: #-------------------------------------------------------
369: sub CDLHASH {
370: my ($name,$key,$value)=@_;
371: my @Keys;
372: my @Values;
373: # Check to see if we have multiple $key values
374: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
375: my $keymask = &mask($key);
376: # Assume the keys are addresses
377: my @Temp = grep /$keymask/,keys(%v);
378: @Keys = $v{@Temp};
379: } else {
380: $Keys[0]= $key;
381: }
382: my @Temp;
383: foreach $key (@Keys) {
384: @Temp = (@Temp, split/,/,$key);
385: }
386: @Keys = @Temp;
387: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
388: my $valmask = &mask($value);
389: my @Temp = grep /$valmask/,keys(%v);
390: @Values =$v{@Temp};
391: } else {
392: $Values[0]= $value;
393: }
394: $value = $Values[0];
395: # Add values to hash
396: for (my $i = 0; $i<=$#Keys; $i++) {
397: my $key = $Keys[$i];
398: if (! exists ($hashes{$name}->{$key})) {
399: $hashes{$name}->{$key}->[0]=$value;
400: } else {
401: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
402: $hashes{$name}->{$key} = \@Temp;
403: }
404: }
405: return "hash '$name' updated";
406: }
407:
408: #-------------------------------------------------------
409:
410: =item GETHASH(name,key,index)
411:
412: returns the element in hash 'name'
413: reference by the key 'key', at index 'index' in the values list.
414:
415: =cut
416:
417: #-------------------------------------------------------
418: sub GETHASH {
419: my ($name,$key,$index)=@_;
420: if (! defined($index)) {
421: $index = 0;
422: }
423: if ($key =~ /^[A-z]\d+$/) {
424: $key = $v{$key};
425: }
426: return $hashes{$name}->{$key}->[$index];
427: }
428:
429: #-------------------------------------------------------
430:
431: =item CLEARHASH(name)
432:
433: clears all the values from the hash 'name'
434:
435: =item CLEARHASH(name,key)
436:
437: clears all the values from the hash 'name' associated with the given key.
438:
439: =cut
440:
441: #-------------------------------------------------------
442: sub CLEARHASH {
443: my ($name,$key)=@_;
444: if (defined($key)) {
445: if (exists($hashes{$name}->{$key})) {
446: $hashes{$name}->{$key}=undef;
447: return "hash '$name' key '$key' cleared";
448: }
449: } else {
450: if (exists($hashes{$name})) {
451: $hashes{$name}=undef;
452: return "hash '$name' cleared";
453: }
454: }
455: return "Error in clearing hash";
456: }
457:
458: #-------------------------------------------------------
459:
460: =item HASH(name,key,value)
461:
462: loads values into an internal hash. If a key
463: already has a value associated with it, the values are sorted numerically.
464:
465: =item HASH(name,key)
466:
467: returns the 0th value in the hash 'name' associated with 'key'.
468:
469: =cut
470:
471: #-------------------------------------------------------
472: sub HASH {
473: my ($name,$key,$value)=@_;
474: my @Keys;
475: undef @Keys;
476: my @Values;
477: # Check to see if we have multiple $key values
478: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
479: my $keymask = &mask($key);
480: # Assume the keys are addresses
481: my @Temp = grep /$keymask/,keys(%v);
482: @Keys = $v{@Temp};
483: } else {
484: $Keys[0]= $key;
485: }
486: # If $value is empty, return the first value associated
487: # with the first key.
488: if (! $value) {
489: return $hashes{$name}->{$Keys[0]}->[0];
490: }
491: # Check to see if we have multiple $value(s)
492: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
493: my $valmask = &mask($value);
494: my @Temp = grep /$valmask/,keys(%v);
495: @Values =$v{@Temp};
496: } else {
497: $Values[0]= $value;
498: }
499: # Add values to hash
500: for (my $i = 0; $i<=$#Keys; $i++) {
501: my $key = $Keys[$i];
502: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
503: if (! exists ($hashes{$name}->{$key})) {
504: $hashes{$name}->{$key}->[0]=$value;
505: } else {
506: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
507: $hashes{$name}->{$key} = \@Temp;
508: }
509: }
510: return $Values[-1];
511: }
512:
513: #-------------------------------------------------------
514:
515: =item NUM(range)
516:
517: returns the number of items in the range.
518:
519: =cut
520:
521: #-------------------------------------------------------
522: sub NUM {
523: my $mask=mask(@_);
524: my $num= $#{@{grep(/$mask/,keys(%v))}}+1;
525: return $num;
526: }
527:
528: sub BIN {
529: my ($low,$high,$lower,$upper)=@_;
530: my $mask=mask($lower,$upper);
531: my $num=0;
532: foreach (grep /$mask/,keys(%v)) {
533: if (($v{$_}>=$low) && ($v{$_}<=$high)) {
534: $num++;
535: }
536: }
537: return $num;
538: }
539:
540:
541: #-------------------------------------------------------
542:
543: =item SUM(range)
544:
545: returns the sum of items in the range.
546:
547: =cut
548:
549: #-------------------------------------------------------
550: sub SUM {
551: my $mask=mask(@_);
552: my $sum=0;
553: foreach (grep /$mask/,keys(%v)) {
554: $sum+=$v{$_};
555: }
556: return $sum;
557: }
558:
559: #-------------------------------------------------------
560:
561: =item MEAN(range)
562:
563: compute the average of the items in the range.
564:
565: =cut
566:
567: #-------------------------------------------------------
568: sub MEAN {
569: my $mask=mask(@_);
570: my $sum=0; my $num=0;
571: foreach (grep /$mask/,keys(%v)) {
572: $sum+=$v{$_};
573: $num++;
574: }
575: if ($num) {
576: return $sum/$num;
577: } else {
578: return undef;
579: }
580: }
581:
582: #-------------------------------------------------------
583:
584: =item STDDEV(range)
585:
586: compute the standard deviation of the items in the range.
587:
588: =cut
589:
590: #-------------------------------------------------------
591: sub STDDEV {
592: my $mask=mask(@_);
593: my $sum=0; my $num=0;
594: foreach (grep /$mask/,keys(%v)) {
595: $sum+=$v{$_};
596: $num++;
597: }
598: unless ($num>1) { return undef; }
599: my $mean=$sum/$num;
600: $sum=0;
601: foreach (grep /$mask/,keys(%v)) {
602: $sum+=($v{$_}-$mean)**2;
603: }
604: return sqrt($sum/($num-1));
605: }
606:
607: #-------------------------------------------------------
608:
609: =item PROD(range)
610:
611: compute the product of the items in the range.
612:
613: =cut
614:
615: #-------------------------------------------------------
616: sub PROD {
617: my $mask=mask(@_);
618: my $prod=1;
619: foreach (grep /$mask/,keys(%v)) {
620: $prod*=$v{$_};
621: }
622: return $prod;
623: }
624:
625: #-------------------------------------------------------
626:
627: =item MAX(range)
628:
629: compute the maximum of the items in the range.
630:
631: =cut
632:
633: #-------------------------------------------------------
634: sub MAX {
635: my $mask=mask(@_);
636: my $max='-';
637: foreach (grep /$mask/,keys(%v)) {
638: unless ($max) { $max=$v{$_}; }
639: if (($v{$_}>$max) || ($max eq '-')) { $max=$v{$_}; }
640: }
641: return $max;
642: }
643:
644: #-------------------------------------------------------
645:
646: =item MIN(range)
647:
648: compute the minimum of the items in the range.
649:
650: =cut
651:
652: #-------------------------------------------------------
653: sub MIN {
654: my $mask=mask(@_);
655: my $min='-';
656: foreach (grep /$mask/,keys(%v)) {
657: unless ($max) { $max=$v{$_}; }
658: if (($v{$_}<$min) || ($min eq '-')) { $min=$v{$_}; }
659: }
660: return $min;
661: }
662:
663: #-------------------------------------------------------
664:
665: =item SUMMAX(num,lower,upper)
666:
667: compute the sum of the largest 'num' items in the range from
668: 'lower' to 'upper'
669:
670: =cut
671:
672: #-------------------------------------------------------
673: sub SUMMAX {
674: my ($num,$lower,$upper)=@_;
675: my $mask=mask($lower,$upper);
676: my @inside=();
677: foreach (grep /$mask/,keys(%v)) {
678: push (@inside,$v{$_});
679: }
680: @inside=sort(@inside);
681: my $sum=0; my $i;
682: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
683: $sum+=$inside[$i];
684: }
685: return $sum;
686: }
687:
688: #-------------------------------------------------------
689:
690: =item SUMMIN(num,lower,upper)
691:
692: compute the sum of the smallest 'num' items in the range from
693: 'lower' to 'upper'
694:
695: =cut
696:
697: #-------------------------------------------------------
698: sub SUMMIN {
699: my ($num,$lower,$upper)=@_;
700: my $mask=mask($lower,$upper);
701: my @inside=();
702: foreach (grep /$mask/,keys(%v)) {
703: $inside[$#inside+1]=$v{$_};
704: }
705: @inside=sort(@inside);
706: my $sum=0; my $i;
707: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
708: $sum+=$inside[$i];
709: }
710: return $sum;
711: }
712:
713: sub expandnamed {
714: my $expression=shift;
715: if ($expression=~/^\&/) {
716: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
717: my @vars=split(/\W+/,$formula);
718: my %values=();
719: undef %values;
720: foreach ( @vars ) {
721: my $varname=$_;
722: if ($varname=~/\D/) {
723: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
724: $varname=~s/$var/\(\\w\+\)/g;
725: foreach (keys(%c)) {
726: if ($_=~/$varname/) {
727: $values{$1}=1;
728: }
729: }
730: }
731: }
732: if ($func eq 'EXPANDSUM') {
733: my $result='';
734: foreach (keys(%values)) {
735: my $thissum=$formula;
736: $thissum=~s/$var/$_/g;
737: $result.=$thissum.'+';
738: }
739: $result=~s/\+$//;
740: return $result;
741: } else {
742: return 0;
743: }
744: } else {
745: # it is not a function, so it is a parameter name
746: # We should do the following:
747: # 1. Take the list of parameter names
748: # 2. look through the list for ones that match the parameter we want
749: # 3. If there are no collisions, return the one that matches
750: # 4. If there is a collision, return 'bad parameter name error'
751: my $returnvalue = '';
752: my @matches = ();
753: $#matches = -1;
754: study $expression;
755: foreach $parameter (keys(%c)) {
756: push @matches,$parameter if ($parameter =~ /$expression/);
757: }
758: if ($#matches == 0) {
759: $returnvalue = '$c{\''.$matches[0].'\'}';
760: } else {
761: $returnvalue = "'bad parameter name : $expression'";
762: }
763: return $returnvalue;
764: }
765: }
766:
767: sub sett {
768: %t=();
769: my $pattern='';
770: if ($sheettype eq 'assesscalc') {
771: $pattern='A';
772: } else {
773: $pattern='[A-Z]';
774: }
775: foreach (keys(%f)) {
776: if ($_=~/template\_(\w)/) {
777: my $col=$1;
778: unless ($col=~/^$pattern/) {
779: foreach (keys(%f)) {
780: if ($_=~/A(\d+)/) {
781: my $trow=$1;
782: if ($trow) {
783: # Get the name of this cell
784: my $lb=$col.$trow;
785: # Grab the template declaration
786: $t{$lb}=$f{'template_'.$col};
787: # Replace '#' with the row number
788: $t{$lb}=~s/\#/$trow/g;
789: # Replace '....' with ','
790: $t{$lb}=~s/\.\.+/\,/g;
791: # Replace 'A0' with the value from 'A0'
792: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
793: # Replace parameters
794: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
795: }
796: }
797: }
798: }
799: }
800: }
801: foreach (keys(%f)) {
802: if (($f{$_}) && ($_!~/template\_/)) {
803: my $matches=($_=~/^$pattern(\d+)/);
804: if (($matches) && ($1)) {
805: unless ($f{$_}=~/^\!/) {
806: $t{$_}=$c{$_};
807: }
808: } else {
809: $t{$_}=$f{$_};
810: $t{$_}=~s/\.\.+/\,/g;
811: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
812: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
813: }
814: }
815: }
816: # For some reason 'A0' gets special treatment... This seems superfluous
817: # but I imagine it is here for a reason.
818: $t{'A0'}=$f{'A0'};
819: $t{'A0'}=~s/\.\.+/\,/g;
820: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
821: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
822: }
823:
824: sub calc {
825: %v=();
826: &sett();
827: my $notfinished=1;
828: my $depth=0;
829: while ($notfinished) {
830: $notfinished=0;
831: foreach (keys(%t)) {
832: my $old=$v{$_};
833: $v{$_}=eval($t{$_});
834: if ($@) {
835: %v=();
836: return $@;
837: }
838: if ($v{$_} ne $old) { $notfinished=1; }
839: }
840: $depth++;
841: if ($depth>100) {
842: %v=();
843: return 'Maximum calculation depth exceeded';
844: }
845: }
846: return '';
847: }
848:
849: sub templaterow {
850: my @cols=();
851: $cols[0]='<b><font size=+1>Template</font></b>';
852: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
853: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
854: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
855: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
856: my $fm=$f{'template_'.$_};
857: $fm=~s/[\'\"]/\&\#34;/g;
858: $cols[$#cols+1]="'template_$_','$fm'".'___eq___'.$fm;
859: }
860: return @cols;
861: }
862:
863: sub outrowassess {
864: my $n=shift;
865: my @cols=();
866: if ($n) {
867: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{'A'.$n});
868: $cols[0]=$rl{$usy}.'<br>'.
869: '<select name="sel_'.$n.'" onChange="changesheet('.$n.
870: ')"><option name="default">Default</option>';
871: foreach (@os) {
872: $cols[0].='<option name="'.$_.'"';
873: if ($ufn eq $_) {
874: $cols[0].=' selected';
875: }
876: $cols[0].='>'.$_.'</option>';
877: }
878: $cols[0].='</select>';
879: } else {
880: $cols[0]='<b><font size=+1>Export</font></b>';
881: }
882: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
883: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
884: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
885: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
886: my $fm=$f{$_.$n};
887: $fm=~s/[\'\"]/\&\#34;/g;
888: push(@cols,"'$_$n','$fm'".'___eq___'.$v{$_.$n});
889: }
890: return @cols;
891: }
892:
893: sub outrow {
894: my $n=shift;
895: my @cols=();
896: if ($n) {
897: $cols[0]=$rl{$f{'A'.$n}};
898: } else {
899: $cols[0]='<b><font size=+1>Export</font></b>';
900: }
901: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
902: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
903: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
904: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
905: my $fm=$f{$_.$n};
906: $fm=~s/[\'\"]/\&\#34;/g;
907: $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
908: }
909: return @cols;
910: }
911:
912: sub exportrowa {
913: my @exportarray=();
914: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
915: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
916: $exportarray[$#exportarray+1]=$v{$_.'0'};
917: }
918: return @exportarray;
919: }
920:
921: # ------------------------------------------- End of "Inside of the safe space"
922: ENDDEFS
923: $safeeval->reval($code);
924: return $safeeval;
925: }
926:
927: # ------------------------------------------------ Add or change formula values
928:
929: sub setformulas {
930: my ($safeeval,%f)=@_;
931: %{$safeeval->varglob('f')}=%f;
932: }
933:
934: # ------------------------------------------------ Add or change formula values
935:
936: sub setconstants {
937: my ($safeeval,%c)=@_;
938: %{$safeeval->varglob('c')}=%c;
939: }
940:
941: # --------------------------------------------- Set names of other spreadsheets
942:
943: sub setothersheets {
944: my ($safeeval,@os)=@_;
945: @{$safeeval->varglob('os')}=@os;
946: }
947:
948: # ------------------------------------------------ Add or change formula values
949:
950: sub setrowlabels {
951: my ($safeeval,%rl)=@_;
952: %{$safeeval->varglob('rl')}=%rl;
953: }
954:
955: # ------------------------------------------------------- Calculate spreadsheet
956:
957: sub calcsheet {
958: my $safeeval=shift;
959: $safeeval->reval('&calc();');
960: }
961:
962: # ------------------------------------------------------------------ Get values
963:
964: sub getvalues {
965: my $safeeval=shift;
966: return $safeeval->reval('%v');
967: }
968:
969: # ---------------------------------------------------------------- Get formulas
970:
971: sub getformulas {
972: my $safeeval=shift;
973: return %{$safeeval->varglob('f')};
974: }
975:
976: # -------------------------------------------------------------------- Get type
977:
978: sub gettype {
979: my $safeeval=shift;
980: return $safeeval->reval('$sheettype');
981: }
982:
983: # ------------------------------------------------------------------ Set maxrow
984:
985: sub setmaxrow {
986: my ($safeeval,$row)=@_;
987: $safeeval->reval('$maxrow='.$row.';');
988: }
989:
990: # ------------------------------------------------------------------ Get maxrow
991:
992: sub getmaxrow {
993: my $safeeval=shift;
994: return $safeeval->reval('$maxrow');
995: }
996:
997: # ---------------------------------------------------------------- Set filename
998:
999: sub setfilename {
1000: my ($safeeval,$fn)=@_;
1001: $safeeval->reval('$filename="'.$fn.'";');
1002: }
1003:
1004: # ---------------------------------------------------------------- Get filename
1005:
1006: sub getfilename {
1007: my $safeeval=shift;
1008: return $safeeval->reval('$filename');
1009: }
1010:
1011: # --------------------------------------------------------------- Get course ID
1012:
1013: sub getcid {
1014: my $safeeval=shift;
1015: return $safeeval->reval('$cid');
1016: }
1017:
1018: # --------------------------------------------------------- Get course filename
1019:
1020: sub getcfn {
1021: my $safeeval=shift;
1022: return $safeeval->reval('$cfn');
1023: }
1024:
1025: # ----------------------------------------------------------- Get course number
1026:
1027: sub getcnum {
1028: my $safeeval=shift;
1029: return $safeeval->reval('$cnum');
1030: }
1031:
1032: # ------------------------------------------------------------- Get course home
1033:
1034: sub getchome {
1035: my $safeeval=shift;
1036: return $safeeval->reval('$chome');
1037: }
1038:
1039: # ----------------------------------------------------------- Get course domain
1040:
1041: sub getcdom {
1042: my $safeeval=shift;
1043: return $safeeval->reval('$cdom');
1044: }
1045:
1046: # ---------------------------------------------------------- Get course section
1047:
1048: sub getcsec {
1049: my $safeeval=shift;
1050: return $safeeval->reval('$csec');
1051: }
1052:
1053: # --------------------------------------------------------------- Get user name
1054:
1055: sub getuname {
1056: my $safeeval=shift;
1057: return $safeeval->reval('$uname');
1058: }
1059:
1060: # ------------------------------------------------------------- Get user domain
1061:
1062: sub getudom {
1063: my $safeeval=shift;
1064: return $safeeval->reval('$udom');
1065: }
1066:
1067: # --------------------------------------------------------------- Get user home
1068:
1069: sub getuhome {
1070: my $safeeval=shift;
1071: return $safeeval->reval('$uhome');
1072: }
1073:
1074: # -------------------------------------------------------------------- Get symb
1075:
1076: sub getusymb {
1077: my $safeeval=shift;
1078: return $safeeval->reval('$usymb');
1079: }
1080:
1081: # ------------------------------------------------------------- Export of A-row
1082:
1083: sub exportdata {
1084: my $safeeval=shift;
1085: return $safeeval->reval('&exportrowa()');
1086: }
1087:
1088:
1089: # ========================================================== End of Spreadsheet
1090: # =============================================================================
1091:
1092: #
1093: # Procedures for screen output
1094: #
1095: # --------------------------------------------- Produce output row n from sheet
1096:
1097: sub rown {
1098: my ($safeeval,$n)=@_;
1099: my $defaultbg;
1100: my $rowdata='';
1101: my $dataflag=0;
1102: unless ($n eq '-') {
1103: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1104: } else {
1105: $defaultbg='#E0FF';
1106: }
1107: unless ($ENV{'form.showcsv'}) {
1108: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1109: } else {
1110: $rowdata.="\n".'"'.$n.'"';
1111: }
1112: my $showf=0;
1113: my $proc;
1114: my $maxred;
1115: my $sheettype=&gettype($safeeval);
1116: if ($sheettype eq 'studentcalc') {
1117: $proc='&outrowassess';
1118: $maxred=26;
1119: } else {
1120: $proc='&outrow';
1121: }
1122: if ($sheettype eq 'assesscalc') {
1123: $maxred=1;
1124: } else {
1125: $maxred=26;
1126: }
1127: if ($n eq '-') { $proc='&templaterow'; $n=-1; $dataflag=1; }
1128: foreach ($safeeval->reval($proc.'('.$n.')')) {
1129: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1130: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1131: if ((($vl ne '') || ($vl eq '0')) &&
1132: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1133: if ($showf==0) { $vl=$_; }
1134: unless ($ENV{'form.showcsv'}) {
1135: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1136: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1137: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1138: if ($vl eq '') {
1139: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1140: }
1141: $rowdata.=
1142: '<td bgcolor='.$bgcolor.'><a href="javascript:celledit('.$fm.');">'.$vl.
1143: '</a></td>';
1144: } else {
1145: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1146: }
1147: } else {
1148: $rowdata.=',"'.$vl.'"';
1149: }
1150: $showf++;
1151: } # End of foreach($safeval...)
1152: if ($ENV{'form.showall'} || ($dataflag)) {
1153: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1154: } else {
1155: return '';
1156: }
1157: }
1158:
1159: # ------------------------------------------------------------- Print out sheet
1160:
1161: sub outsheet {
1162: my ($r,$safeeval)=@_;
1163: my $maxred;
1164: my $realm;
1165: if (&gettype($safeeval) eq 'assesscalc') {
1166: $maxred=1;
1167: $realm='Assessment';
1168: } elsif (&gettype($safeeval) eq 'studentcalc') {
1169: $maxred=26;
1170: $realm='User';
1171: } else {
1172: $maxred=26;
1173: $realm='Course';
1174: }
1175: my $maxyellow=52-$maxred;
1176: my $tabledata;
1177: unless ($ENV{'form.showcsv'}) {
1178: $tabledata=
1179: '<table border=2><tr><th colspan=2 rowspan=2><font size=+2>'.
1180: $realm.'</font></th>'.
1181: '<td bgcolor=#FFDDDD colspan='.$maxred.
1182: '><b><font size=+1>Import</font></b></td>'.
1183: '<td colspan='.$maxyellow.
1184: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1185: my $showf=0;
1186: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1187: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1188: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1189: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1190: $showf++;
1191: if ($showf<=$maxred) {
1192: $tabledata.='<td bgcolor="#FFDDDD">';
1193: } else {
1194: $tabledata.='<td>';
1195: }
1196: $tabledata.="<b><font size=+1>$_</font></b></td>";
1197: }
1198: $tabledata.='</tr>'.&rown($safeeval,'-').&rown($safeeval,0);
1199: } else { $tabledata='<pre>'; }
1200:
1201: $r->print($tabledata);
1202:
1203: my $row;
1204: my $maxrow=&getmaxrow($safeeval);
1205:
1206: my @sortby=();
1207: my @sortidx=();
1208: for ($row=1;$row<=$maxrow;$row++) {
1209: $sortby[$row-1]=$safeeval->reval('$f{"A'.$row.'"}');
1210: $sortidx[$row-1]=$row-1;
1211: }
1212: @sortidx=sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
1213:
1214: my $what='Student';
1215: if (&gettype($safeeval) eq 'assesscalc') {
1216: $what='Item';
1217: } elsif (&gettype($safeeval) eq 'studentcalc') {
1218: $what='Assessment';
1219: }
1220:
1221: my $n=0;
1222: for ($row=0;$row<$maxrow;$row++) {
1223: my $thisrow=&rown($safeeval,$sortidx[$row]+1);
1224: if ($thisrow) {
1225: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1226: $r->print("</table>\n<br>\n");
1227: $r->rflush();
1228: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1229: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1230: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1231: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1232: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1233: $r->print('<td>'.$_.'</td>');
1234: }
1235: $r->print('</tr>');
1236: }
1237: $n++;
1238: $r->print($thisrow);
1239: }
1240: }
1241: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1242: }
1243:
1244: #
1245: # ----------------------------------------------- Read list of available sheets
1246: #
1247: sub othersheets {
1248: my ($safeeval,$stype)=@_;
1249: #
1250: my $cnum=&getcnum($safeeval);
1251: my $cdom=&getcdom($safeeval);
1252: my $chome=&getchome($safeeval);
1253: #
1254: my @alternatives=();
1255: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1256: my ($tmp) = keys(%results);
1257: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1258: @alternatives = sort (keys(%results));
1259: }
1260: return @alternatives;
1261: }
1262:
1263:
1264: #
1265: # -------------------------------------- Parse a spreadsheet
1266: #
1267: sub parse_sheet {
1268: # $sheetxml is a scalar reference or a scalar
1269: my ($sheetxml) = @_;
1270: if (! ref($sheetxml)) {
1271: my $tmp = $sheetxml;
1272: $sheetxml = \$tmp;
1273: }
1274: my %f;
1275: my $parser=HTML::TokeParser->new($sheetxml);
1276: my $token;
1277: while ($token=$parser->get_token) {
1278: if ($token->[0] eq 'S') {
1279: if ($token->[1] eq 'field') {
1280: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1281: $parser->get_text('/field');
1282: }
1283: if ($token->[1] eq 'template') {
1284: $f{'template_'.$token->[2]->{'col'}}=
1285: $parser->get_text('/template');
1286: }
1287: }
1288: }
1289: return \%f;
1290: }
1291:
1292: #
1293: # -------------------------------------- Read spreadsheet formulas for a course
1294: #
1295:
1296: sub readsheet {
1297: my ($safeeval,$fn)=@_;
1298: my $stype=&gettype($safeeval);
1299: my $cnum=&getcnum($safeeval);
1300: my $cdom=&getcdom($safeeval);
1301: my $chome=&getchome($safeeval);
1302:
1303: if (! defined($fn)) {
1304: # There is no filename. Look for defaults in course and global, cache
1305: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1306: my %tmphash = &Apache::lonnet::get('environment',
1307: ['spreadsheet_default_'.$stype],
1308: $cdom,$cnum);
1309: my ($tmp) = keys(%tmphash);
1310: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1311: $fn = 'default_'.$stype;
1312: } else {
1313: $fn = $tmphash{'spreadsheet_default_'.$stype};
1314: }
1315: unless (($fn) && ($fn!~/^error\:/)) {
1316: $fn='default_'.$stype;
1317: }
1318: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1319: }
1320: }
1321:
1322: # ---------------------------------------------------------- fn now has a value
1323:
1324: &setfilename($safeeval,$fn);
1325:
1326: # ------------------------------------------------------ see if sheet is cached
1327: my $fstring='';
1328: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1329: &setformulas($safeeval,split(/\_\_\_\;\_\_\_/,$fstring));
1330: } else {
1331:
1332: # ---------------------------------------------------- Not cached, need to read
1333:
1334: my %f=();
1335:
1336: if ($fn=~/^default\_/) {
1337: my $sheetxml='';
1338: my $fh;
1339: my $dfn=$fn;
1340: $dfn=~s/\_/\./g;
1341: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1342: $sheetxml=join('',<$fh>);
1343: } else {
1344: $sheetxml='<field row="0" col="A">"Error"</field>';
1345: }
1346: %f=%{&parse_sheet(\$sheetxml)};
1347: } elsif($fn=~/\/*\.spreadsheet$/) {
1348: my $sheetxml=&Apache::lonnet::getfile
1349: (&Apache::lonnet::filelocation('',$fn));
1350: if ($sheetxml == -1) {
1351: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1352: .$fn.'"</field>';
1353: }
1354: %f=%{&parse_sheet(\$sheetxml)};
1355: } else {
1356: my $sheet='';
1357: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1358: my ($tmp) = keys(%tmphash);
1359: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1360: foreach (keys(%tmphash)) {
1361: $f{$_}=$tmphash{$_};
1362: }
1363: }
1364: }
1365: # --------------------------------------------------------------- Cache and set
1366: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1367: &setformulas($safeeval,%f);
1368: }
1369: }
1370:
1371: # -------------------------------------------------------- Make new spreadsheet
1372:
1373: sub makenewsheet {
1374: my ($uname,$udom,$stype,$usymb)=@_;
1375: my $safeeval=initsheet($stype);
1376: $safeeval->reval(
1377: '$uname="'.$uname.
1378: '";$udom="'.$udom.
1379: '";$uhome="'.&Apache::lonnet::homeserver($uname,$udom).
1380: '";$sheettype="'.$stype.
1381: '";$usymb="'.$usymb.
1382: '";$csec="'.&Apache::lonnet::usection($udom,$uname,
1383: $ENV{'request.course.id'}).
1384: '";$cid="'.$ENV{'request.course.id'}.
1385: '";$cfn="'.$ENV{'request.course.fn'}.
1386: '";$cnum="'.$ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1387: '";$cdom="'.$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1388: '";$chome="'.$ENV{'course.'.$ENV{'request.course.id'}.'.home'}.'";');
1389: return $safeeval;
1390: }
1391:
1392: # ------------------------------------------------------------ Save spreadsheet
1393:
1394: sub writesheet {
1395: my ($safeeval,$makedef)=@_;
1396: my $cid=&getcid($safeeval);
1397: if (&Apache::lonnet::allowed('opa',$cid)) {
1398: my %f=&getformulas($safeeval);
1399: my $stype=&gettype($safeeval);
1400: my $cnum=&getcnum($safeeval);
1401: my $cdom=&getcdom($safeeval);
1402: my $chome=&getchome($safeeval);
1403: my $fn=&getfilename($safeeval);
1404:
1405: # ------------------------------------------------------------- Cache new sheet
1406: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1407: # ----------------------------------------------------------------- Write sheet
1408: my $sheetdata='';
1409: foreach (keys(%f)) {
1410: unless ($f{$_} eq 'import') {
1411: $sheetdata.=&Apache::lonnet::escape($_).'='.
1412: &Apache::lonnet::escape($f{$_}).'&';
1413: }
1414: }
1415: $sheetdata=~s/\&$//;
1416: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1417: $sheetdata,$chome);
1418: if ($reply eq 'ok') {
1419: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1420: $stype.'_spreadsheets:'.
1421: &Apache::lonnet::escape($fn).'='.$ENV{'user.name'}.'@'.
1422: $ENV{'user.domain'},
1423: $chome);
1424: if ($reply eq 'ok') {
1425: if ($makedef) {
1426: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1427: ':environment:spreadsheet_default_'.$stype.'='.
1428: &Apache::lonnet::escape($fn),
1429: $chome);
1430: } else {
1431: return $reply;
1432: }
1433: } else {
1434: return $reply;
1435: }
1436: } else {
1437: return $reply;
1438: }
1439: }
1440: return 'unauthorized';
1441: }
1442:
1443: # ----------------------------------------------- Make a temp copy of the sheet
1444: # "Modified workcopy" - interactive only
1445: #
1446:
1447: sub tmpwrite {
1448: my $safeeval=shift;
1449: my $fn=$ENV{'user.name'}.'_'.
1450: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1451: &getfilename($safeeval);
1452: $fn=~s/\W/\_/g;
1453: $fn=$tmpdir.$fn.'.tmp';
1454: my $fh;
1455: if ($fh=Apache::File->new('>'.$fn)) {
1456: print $fh join("\n",&getformulas($safeeval));
1457: }
1458: }
1459:
1460: # ---------------------------------------------------------- Read the temp copy
1461:
1462: sub tmpread {
1463: my ($safeeval,$nfield,$nform)=@_;
1464: my $fn=$ENV{'user.name'}.'_'.
1465: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1466: &getfilename($safeeval);
1467: $fn=~s/\W/\_/g;
1468: $fn=$tmpdir.$fn.'.tmp';
1469: my $fh;
1470: my %fo=();
1471: if ($fh=Apache::File->new($fn)) {
1472: my $name;
1473: while ($name=<$fh>) {
1474: chomp($name);
1475: my $value=<$fh>;
1476: chomp($value);
1477: $fo{$name}=$value;
1478: }
1479: }
1480: if ($nform eq 'changesheet') {
1481: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1482: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1483: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1484: }
1485: } else {
1486: if ($nfield) { $fo{$nfield}=$nform; }
1487: }
1488: &setformulas($safeeval,%fo);
1489: }
1490:
1491: # ================================================================== Parameters
1492: # -------------------------------------------- Figure out a cascading parameter
1493: #
1494: # For this function to work
1495: #
1496: # * parmhash needs to be tied
1497: # * courseopt and useropt need to be initialized for this user and course
1498: #
1499:
1500: sub parmval {
1501: my ($what,$safeeval)=@_;
1502: my $cid=&getcid($safeeval);
1503: my $csec=&getcsec($safeeval);
1504: my $uname=&getuname($safeeval);
1505: my $udom=&getudom($safeeval);
1506: my $symb=&getusymb($safeeval);
1507:
1508: unless ($symb) { return ''; }
1509: my $result='';
1510:
1511: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1512: # ----------------------------------------------------- Cascading lookup scheme
1513: my $rwhat=$what;
1514: $what=~s/^parameter\_//;
1515: $what=~s/\_([^\_]+)$/\.$1/;
1516:
1517: my $symbparm=$symb.'.'.$what;
1518: my $mapparm=$mapname.'___(all).'.$what;
1519: my $usercourseprefix=$uname.'_'.$udom.'_'.$cid;
1520:
1521: my $seclevel=
1522: $usercourseprefix.'.['.
1523: $csec.'].'.$what;
1524: my $seclevelr=
1525: $usercourseprefix.'.['.
1526: $csec.'].'.$symbparm;
1527: my $seclevelm=
1528: $usercourseprefix.'.['.
1529: $csec.'].'.$mapparm;
1530:
1531: my $courselevel=
1532: $usercourseprefix.'.'.$what;
1533: my $courselevelr=
1534: $usercourseprefix.'.'.$symbparm;
1535: my $courselevelm=
1536: $usercourseprefix.'.'.$mapparm;
1537:
1538: # ---------------------------------------------------------- fourth, check user
1539:
1540: if ($uname) {
1541:
1542: if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; }
1543:
1544: if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; }
1545:
1546: if ($useropt{$courselevel}) { return $useropt{$courselevel}; }
1547:
1548: }
1549:
1550: # --------------------------------------------------------- third, check course
1551:
1552: if ($csec) {
1553:
1554: if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; }
1555:
1556: if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; }
1557:
1558: if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; }
1559:
1560: }
1561:
1562: if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; }
1563:
1564: if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; }
1565:
1566: if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; }
1567:
1568: # ----------------------------------------------------- second, check map parms
1569:
1570: my $thisparm=$parmhash{$symbparm};
1571: if ($thisparm) { return $thisparm; }
1572:
1573: # -------------------------------------------------------- first, check default
1574:
1575: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1576:
1577: }
1578:
1579: # ---------------------------------------------- Update rows for course listing
1580:
1581: sub updateclasssheet {
1582: my $safeeval=shift;
1583: my $cnum=&getcnum($safeeval);
1584: my $cdom=&getcdom($safeeval);
1585: my $cid=&getcid($safeeval);
1586: my $chome=&getchome($safeeval);
1587:
1588: # ---------------------------------------------- Read class list and row labels
1589:
1590: my $classlst=&Apache::lonnet::reply
1591: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1592: my %currentlist=();
1593: my $now=time;
1594: unless ($classlst=~/^error\:/) {
1595: foreach (split(/\&/,$classlst)) {
1596: my ($name,$value)=split(/\=/,$_);
1597: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1598: my $active=1;
1599: if (($end) && ($now>$end)) { $active=0; }
1600: if ($active) {
1601: my $rowlabel='';
1602: $name=&Apache::lonnet::unescape($name);
1603: my ($sname,$sdom)=split(/\:/,$name);
1604: my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
1605: if ($ssec==-1) {
1606: unless ($ENV{'form.showcsv'}) {
1607: $rowlabel='<font color=red>Data not available: '.$name.
1608: '</font>';
1609: } else {
1610: $rowlabel='ERROR","'.$name.
1611: '","Data not available","","","';
1612: }
1613: } else {
1614: my %reply=&Apache::lonnet::idrget($sdom,$sname);
1615: my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1616: ':environment:firstname&middlename&lastname&generation',
1617: &Apache::lonnet::homeserver($sname,$sdom));
1618: unless ($ENV{'form.showcsv'}) {
1619: $rowlabel='<a href="/adm/studentcalc?uname='.$sname.
1620: '&udom='.$sdom.'">'.
1621: $ssec.' '.$reply{$sname}.'<br>';
1622: foreach ( split(/\&/,$reply)) {
1623: $rowlabel.=&Apache::lonnet::unescape($_).' ';
1624: }
1625: $rowlabel.='</a>';
1626: } else {
1627: $rowlabel=$ssec.'","'.$reply{$sname}.'"';
1628: my $ncount=0;
1629: foreach (split(/\&/,$reply)) {
1630: $rowlabel.=',"'.&Apache::lonnet::unescape($_).'"';
1631: $ncount++;
1632: }
1633: unless ($ncount==4) { $rowlabel.=',""'; }
1634: $rowlabel=~s/\"$//;
1635: }
1636: }
1637: $currentlist{&Apache::lonnet::unescape($name)}=$rowlabel;
1638: }
1639: } # end of foreach (split(/\&/,$classlst))
1640: #
1641: # -------------------- Find discrepancies between the course row table and this
1642: #
1643: my %f=&getformulas($safeeval);
1644: my $changed=0;
1645:
1646: my $maxrow=0;
1647: my %existing=();
1648:
1649: # ----------------------------------------------------------- Now obsolete rows
1650: foreach (keys(%f)) {
1651: if ($_=~/^A(\d+)/) {
1652: $maxrow=($1>$maxrow)?$1:$maxrow;
1653: $existing{$f{$_}}=1;
1654: unless ((defined($currentlist{$f{$_}})) || (!$1)) {
1655: $f{$_}='!!! Obsolete';
1656: $changed=1;
1657: }
1658: }
1659: }
1660:
1661: # -------------------------------------------------------- New and unknown keys
1662:
1663: foreach (sort keys(%currentlist)) {
1664: unless ($existing{$_}) {
1665: $changed=1;
1666: $maxrow++;
1667: $f{'A'.$maxrow}=$_;
1668: }
1669: }
1670:
1671: if ($changed) { &setformulas($safeeval,%f); }
1672:
1673: &setmaxrow($safeeval,$maxrow);
1674: &setrowlabels($safeeval,%currentlist);
1675:
1676: } else {
1677: return 'Could not access course data';
1678: }
1679: }
1680:
1681: # ----------------------------------- Update rows for student and assess sheets
1682:
1683: sub updatestudentassesssheet {
1684: my $safeeval=shift;
1685: my %bighash;
1686: my $stype=&gettype($safeeval);
1687: my %current=();
1688: unless ($updatedata{$ENV{'request.course.fn'}.'_'.$stype}) {
1689: # -------------------------------------------------------------------- Tie hash
1690: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1691: &GDBM_READER,0640)) {
1692: # --------------------------------------------------------- Get all assessments
1693:
1694: my %allkeys=('timestamp' =>
1695: 'Timestamp of Last Transaction<br>timestamp',
1696: 'subnumber' =>
1697: 'Number of Submissions<br>subnumber',
1698: 'tutornumber' =>
1699: 'Number of Tutor Responses<br>tutornumber',
1700: 'totalpoints' =>
1701: 'Total Points Granted<br>totalpoints');
1702:
1703: my $adduserstr='';
1704: if ((&getuname($safeeval) ne $ENV{'user.name'}) ||
1705: (&getudom($safeeval) ne $ENV{'user.domain'})) {
1706: $adduserstr='&uname='.&getuname($safeeval).
1707: '&udom='.&getudom($safeeval);
1708: }
1709:
1710: my %allassess=('_feedback' =>
1711: '<a href="/adm/assesscalc?usymb=_feedback'.$adduserstr.
1712: '">Feedback</a>',
1713: '_evaluation' =>
1714: '<a href="/adm/assesscalc?usymb=_evaluation'.$adduserstr.
1715: '">Evaluation</a>',
1716: '_tutoring' =>
1717: '<a href="/adm/assesscalc?usymb=_tutoring'.$adduserstr.
1718: '">Tutoring</a>',
1719: '_discussion' =>
1720: '<a href="/adm/assesscalc?usymb=_discussion'.$adduserstr.
1721: '">Discussion</a>'
1722: );
1723:
1724: foreach (keys(%bighash)) {
1725: if ($_=~/^src\_(\d+)\.(\d+)$/) {
1726: my $mapid=$1;
1727: my $resid=$2;
1728: my $id=$mapid.'.'.$resid;
1729: my $srcf=$bighash{$_};
1730: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1731: my $symb=
1732: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1733: '___'.$resid.'___'.
1734: &Apache::lonnet::declutter($srcf);
1735: $allassess{$symb}=
1736: '<a href="/adm/assesscalc?usymb='.$symb.$adduserstr.'">'.
1737: $bighash{'title_'.$id}.'</a>';
1738: if ($stype eq 'assesscalc') {
1739: foreach (split(/\,/,
1740: &Apache::lonnet::metadata($srcf,'keys'))) {
1741: if (($_=~/^stores\_(.*)/) || ($_=~/^parameter\_(.*)/)) {
1742: my $key=$_;
1743: my $display=
1744: &Apache::lonnet::metadata($srcf,$key.'.display');
1745: unless ($display) {
1746: $display.=
1747: &Apache::lonnet::metadata($srcf,$key.'.name');
1748: }
1749: $display.='<br>'.$key;
1750: $allkeys{$key}=$display;
1751: }
1752: } # end of foreach
1753: }
1754: }
1755: }
1756: } # end of foreach (keys(%bighash))
1757: untie(%bighash);
1758:
1759: #
1760: # %allkeys has a list of storage and parameter displays by unikey
1761: # %allassess has a list of all resource displays by symb
1762: #
1763:
1764: if ($stype eq 'assesscalc') {
1765: %current=%allkeys;
1766: } elsif ($stype eq 'studentcalc') {
1767: %current=%allassess;
1768: }
1769: $updatedata{$ENV{'request.course.fn'}.'_'.$stype}=
1770: join('___;___',%current);
1771: } else {
1772: return 'Could not access course data';
1773: }
1774: # ------------------------------------------------------ Get current from cache
1775: } else {
1776: %current=split(/\_\_\_\;\_\_\_/,
1777: $updatedata{$ENV{'request.course.fn'}.'_'.$stype});
1778: }
1779: # -------------------- Find discrepancies between the course row table and this
1780: #
1781: my %f=&getformulas($safeeval);
1782: my $changed=0;
1783:
1784: my $maxrow=0;
1785: my %existing=();
1786:
1787: # ----------------------------------------------------------- Now obsolete rows
1788: foreach (keys(%f)) {
1789: if ($_=~/^A(\d+)/) {
1790: $maxrow=($1>$maxrow)?$1:$maxrow;
1791: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1792: $existing{$usy}=1;
1793: unless ((defined($current{$usy})) || (!$1)) {
1794: $f{$_}='!!! Obsolete';
1795: $changed=1;
1796: } elsif ($ufn) {
1797: $current{$usy}
1798: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1799: }
1800: }
1801: }
1802:
1803: # -------------------------------------------------------- New and unknown keys
1804:
1805: foreach (keys(%current)) {
1806: unless ($existing{$_}) {
1807: $changed=1;
1808: $maxrow++;
1809: $f{'A'.$maxrow}=$_;
1810: }
1811: }
1812:
1813: if ($changed) { &setformulas($safeeval,%f); }
1814:
1815: &setmaxrow($safeeval,$maxrow);
1816: &setrowlabels($safeeval,%current);
1817:
1818: undef %current;
1819: undef %existing;
1820: }
1821:
1822: # ------------------------------------------------ Load data for one assessment
1823:
1824: sub loadstudent {
1825: my $safeeval=shift;
1826: my %c=();
1827: my %f=&getformulas($safeeval);
1828: $cachedassess=&getuname($safeeval).':'.&getudom($safeeval);
1829: %cachedstores=();
1830: {
1831: my $reply=&Apache::lonnet::reply('dump:'.&getudom($safeeval).':'.
1832: &getuname($safeeval).':'.
1833: &getcid($safeeval),
1834: &getuhome($safeeval));
1835: unless ($reply=~/^error\:/) {
1836: foreach ( split(/\&/,$reply)) {
1837: my ($name,$value)=split(/\=/,$_);
1838: $cachedstores{&Apache::lonnet::unescape($name)}=
1839: &Apache::lonnet::unescape($value);
1840: }
1841: }
1842: }
1843: my @assessdata=();
1844: foreach (keys(%f)) {
1845: if ($_=~/^A(\d+)/) {
1846: my $row=$1;
1847: unless (($f{$_}=~/^\!/) || ($row==0)) {
1848: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1849: @assessdata=&exportsheet(&getuname($safeeval),
1850: &getudom($safeeval),
1851: 'assesscalc',$usy,$ufn);
1852: my $index=0;
1853: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1854: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1855: if ($assessdata[$index]) {
1856: my $col=$_;
1857: if ($assessdata[$index]=~/\D/) {
1858: $c{$col.$row}="'".$assessdata[$index]."'";
1859: } else {
1860: $c{$col.$row}=$assessdata[$index];
1861: }
1862: unless ($col eq 'A') {
1863: $f{$col.$row}='import';
1864: }
1865: }
1866: $index++;
1867: }
1868: }
1869: }
1870: }
1871: $cachedassess='';
1872: undef %cachedstores;
1873: &setformulas($safeeval,%f);
1874: &setconstants($safeeval,%c);
1875: }
1876:
1877: # --------------------------------------------------- Load data for one student
1878:
1879: sub loadcourse {
1880: my ($safeeval,$r)=@_;
1881: my %c=();
1882: my %f=&getformulas($safeeval);
1883: my $total=0;
1884: foreach (keys(%f)) {
1885: if ($_=~/^A(\d+)/) {
1886: unless ($f{$_}=~/^\!/) { $total++; }
1887: }
1888: }
1889: my $now=0;
1890: my $since=time;
1891: $r->print(<<ENDPOP);
1892: <script>
1893: popwin=open('','popwin','width=400,height=100');
1894: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1895: '<h3>Spreadsheet Calculation Progress</h3>'+
1896: '<form name=popremain>'+
1897: '<input type=text size=35 name=remaining value=Starting></form>'+
1898: '</body></html>');
1899: popwin.document.close();
1900: </script>
1901: ENDPOP
1902: $r->rflush();
1903: foreach (keys(%f)) {
1904: if ($_=~/^A(\d+)/) {
1905: my $row=$1;
1906: unless (($f{$_}=~/^\!/) || ($row==0)) {
1907: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1908: 'studentcalc');
1909: undef %userrdatas;
1910: $now++;
1911: $r->print('<script>popwin.document.popremain.remaining.value="'.
1912: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1913: ' secs remaining";</script>');
1914: $r->rflush();
1915:
1916: my $index=0;
1917: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1918: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1919: if ($studentdata[$index]) {
1920: my $col=$_;
1921: if ($studentdata[$index]=~/\D/) {
1922: $c{$col.$row}="'".$studentdata[$index]."'";
1923: } else {
1924: $c{$col.$row}=$studentdata[$index];
1925: }
1926: unless ($col eq 'A') {
1927: $f{$col.$row}='import';
1928: }
1929: }
1930: $index++;
1931: }
1932: }
1933: }
1934: }
1935: &setformulas($safeeval,%f);
1936: &setconstants($safeeval,%c);
1937: $r->print('<script>popwin.close()</script>');
1938: $r->rflush();
1939: }
1940:
1941: # ------------------------------------------------ Load data for one assessment
1942:
1943: sub loadassessment {
1944: my $safeeval=shift;
1945:
1946: my $uhome=&getuhome($safeeval);
1947: my $uname=&getuname($safeeval);
1948: my $udom=&getudom($safeeval);
1949: my $symb=&getusymb($safeeval);
1950: my $cid=&getcid($safeeval);
1951: my $cnum=&getcnum($safeeval);
1952: my $cdom=&getcdom($safeeval);
1953: my $chome=&getchome($safeeval);
1954:
1955: my $namespace;
1956: unless ($namespace=$cid) { return ''; }
1957:
1958: # ----------------------------------------------------------- Get stored values
1959:
1960: my %returnhash=();
1961:
1962: if ($cachedassess eq $uname.':'.$udom) {
1963: #
1964: # get data out of the dumped stores
1965: #
1966:
1967: my $version=$cachedstores{'version:'.$symb};
1968: my $scope;
1969: for ($scope=1;$scope<=$version;$scope++) {
1970: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
1971: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1972: }
1973: }
1974:
1975: } else {
1976: #
1977: # restore individual
1978: #
1979:
1980: my $answer=&Apache::lonnet::reply(
1981: "restore:$udom:$uname:".
1982: &Apache::lonnet::escape($namespace).":".
1983: &Apache::lonnet::escape($symb),$uhome);
1984: foreach (split(/\&/,$answer)) {
1985: my ($name,$value)=split(/\=/,$_);
1986: $returnhash{&Apache::lonnet::unescape($name)}=
1987: &Apache::lonnet::unescape($value);
1988: }
1989: my $version;
1990: for ($version=1;$version<=$returnhash{'version'};$version++) {
1991: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1992: $returnhash{$_}=$returnhash{$version.':'.$_};
1993: }
1994: }
1995: }
1996: # ----------------------------- returnhash now has all stores for this resource
1997:
1998: # --------- convert all "_" to "." to be able to use libraries, multiparts, etc
1999:
2000: my @oldkeys=keys %returnhash;
2001:
2002: foreach (@oldkeys) {
2003: my $name=$_;
2004: my $value=$returnhash{$_};
2005: delete $returnhash{$_};
2006: $name=~s/\_/\./g;
2007: $returnhash{$name}=$value;
2008: }
2009:
2010: # ---------------------------- initialize coursedata and userdata for this user
2011: undef %courseopt;
2012: undef %useropt;
2013:
2014: my $userprefix=$uname.'_'.$udom.'_';
2015:
2016: unless ($uhome eq 'no_host') {
2017: # -------------------------------------------------------------- Get coursedata
2018: unless
2019: ((time-$courserdatas{$cid.'.last_cache'})<240) {
2020: my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.
2021: ':resourcedata',$chome);
2022: if ($reply!~/^error\:/) {
2023: $courserdatas{$cid}=$reply;
2024: $courserdatas{$cid.'.last_cache'}=time;
2025: }
2026: }
2027: foreach (split(/\&/,$courserdatas{$cid})) {
2028: my ($name,$value)=split(/\=/,$_);
2029: $courseopt{$userprefix.&Apache::lonnet::unescape($name)}=
2030: &Apache::lonnet::unescape($value);
2031: }
2032: # --------------------------------------------------- Get userdata (if present)
2033: unless
2034: ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) {
2035: my $reply=
2036: &Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome);
2037: if ($reply!~/^error\:/) {
2038: $userrdatas{$uname.'___'.$udom}=$reply;
2039: $userrdatas{$uname.'___'.$udom.'.last_cache'}=time;
2040: }
2041: }
2042: foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) {
2043: my ($name,$value)=split(/\=/,$_);
2044: $useropt{$userprefix.&Apache::lonnet::unescape($name)}=
2045: &Apache::lonnet::unescape($value);
2046: }
2047: }
2048: # ----------------- now courseopt, useropt initialized for this user and course
2049: # (used by parmval)
2050:
2051: #
2052: # Load keys for this assessment only
2053: #
2054: my %thisassess=();
2055: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2056:
2057: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2058: $thisassess{$_}=1;
2059: }
2060: #
2061: # Load parameters
2062: #
2063: my %c=();
2064:
2065: if (tie(%parmhash,'GDBM_File',
2066: &getcfn($safeeval).'_parms.db',&GDBM_READER,0640)) {
2067: my %f=&getformulas($safeeval);
2068: foreach (keys(%f)) {
2069: if ($_=~/^A/) {
2070: unless ($f{$_}=~/^\!/) {
2071: if ($f{$_}=~/^parameter/) {
2072: if ($thisassess{$f{$_}}) {
2073: my $val=&parmval($f{$_},$safeeval);
2074: $c{$_}=$val;
2075: $c{$f{$_}}=$val;
2076: }
2077: } else {
2078: my $key=$f{$_};
2079: my $ckey=$key;
2080: $key=~s/^stores\_/resource\./;
2081: $key=~s/\_/\./g;
2082: $c{$_}=$returnhash{$key};
2083: $c{$ckey}=$returnhash{$key};
2084: }
2085: }
2086: }
2087: }
2088: untie(%parmhash);
2089: }
2090: &setconstants($safeeval,%c);
2091: }
2092:
2093: # --------------------------------------------------------- Various form fields
2094:
2095: sub textfield {
2096: my ($title,$name,$value)=@_;
2097: return "\n<p><b>$title:</b><br>".
2098: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2099: }
2100:
2101: sub hiddenfield {
2102: my ($name,$value)=@_;
2103: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2104: }
2105:
2106: sub selectbox {
2107: my ($title,$name,$value,%options)=@_;
2108: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2109: foreach (sort keys(%options)) {
2110: $selout.='<option value="'.$_.'"';
2111: if ($_ eq $value) { $selout.=' selected'; }
2112: $selout.='>'.$options{$_}.'</option>';
2113: }
2114: return $selout.'</select>';
2115: }
2116:
2117: # =============================================== Update information in a sheet
2118: #
2119: # Add new users or assessments, etc.
2120: #
2121:
2122: sub updatesheet {
2123: my $safeeval=shift;
2124: my $stype=&gettype($safeeval);
2125: if ($stype eq 'classcalc') {
2126: return &updateclasssheet($safeeval);
2127: } else {
2128: return &updatestudentassesssheet($safeeval);
2129: }
2130: }
2131:
2132: # =================================================== Load the rows for a sheet
2133: #
2134: # Import the data for rows
2135: #
2136:
2137: sub loadrows {
2138: my ($safeeval,$r)=@_;
2139: my $stype=&gettype($safeeval);
2140: if ($stype eq 'classcalc') {
2141: &loadcourse($safeeval,$r);
2142: } elsif ($stype eq 'studentcalc') {
2143: &loadstudent($safeeval);
2144: } else {
2145: &loadassessment($safeeval);
2146: }
2147: }
2148:
2149: # ======================================================= Forced recalculation?
2150:
2151: sub checkthis {
2152: my ($keyname,$time)=@_;
2153: return ($time<$expiredates{$keyname});
2154: }
2155: sub forcedrecalc {
2156: my ($uname,$udom,$stype,$usymb)=@_;
2157: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2158: my $time=$oldsheets{$key.'.time'};
2159: if ($ENV{'form.forcerecalc'}) { return 1; }
2160: unless ($time) { return 1; }
2161: if ($stype eq 'assesscalc') {
2162: my $map=(split(/\_\_\_/,$usymb))[0];
2163: if (&checkthis('::assesscalc:',$time) ||
2164: &checkthis('::assesscalc:'.$map,$time) ||
2165: &checkthis('::assesscalc:'.$usymb,$time) ||
2166: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2167: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2168: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2169: return 1;
2170: }
2171: } else {
2172: if (&checkthis('::studentcalc:',$time) ||
2173: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2174: return 1;
2175: }
2176: }
2177: return 0;
2178: }
2179:
2180: # ============================================================== Export handler
2181: #
2182: # Non-interactive call from with program
2183: #
2184:
2185: sub exportsheet {
2186: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2187: my @exportarr=();
2188:
2189: if (($usymb=~/^\_(\w+)/) && (!$fn)) {
2190: $fn='default_'.$1;
2191: }
2192:
2193: #
2194: # Check if cached
2195: #
2196:
2197: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2198: my $found='';
2199:
2200: if ($oldsheets{$key}) {
2201: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2202: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2203: if ($name eq $fn) {
2204: $found=$value;
2205: }
2206: }
2207: }
2208:
2209: unless ($found) {
2210: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2211: if ($oldsheets{$key}) {
2212: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2213: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2214: if ($name eq $fn) {
2215: $found=$value;
2216: }
2217: }
2218: }
2219: }
2220: #
2221: # Check if still valid
2222: #
2223: if ($found) {
2224: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2225: $found='';
2226: }
2227: }
2228:
2229: if ($found) {
2230: #
2231: # Return what was cached
2232: #
2233: @exportarr=split(/\_\_\_\;\_\_\_/,$found);
2234:
2235: } else {
2236: #
2237: # Not cached
2238: #
2239:
2240: my $thissheet=&makenewsheet($uname,$udom,$stype,$usymb);
2241: &readsheet($thissheet,$fn);
2242: &updatesheet($thissheet);
2243: &loadrows($thissheet);
2244: &calcsheet($thissheet);
2245: @exportarr=&exportdata($thissheet);
2246: #
2247: # Store now
2248: #
2249: my $cid=$ENV{'request.course.id'};
2250: my $current='';
2251: if ($stype eq 'studentcalc') {
2252: $current=&Apache::lonnet::reply('get:'.
2253: $ENV{'course.'.$cid.'.domain'}.':'.
2254: $ENV{'course.'.$cid.'.num'}.
2255: ':nohist_calculatedsheets:'.
2256: &Apache::lonnet::escape($key),
2257: $ENV{'course.'.$cid.'.home'});
2258: } else {
2259: $current=&Apache::lonnet::reply('get:'.
2260: &getudom($thissheet).':'.
2261: &getuname($thissheet).
2262: ':nohist_calculatedsheets_'.
2263: $ENV{'request.course.id'}.':'.
2264: &Apache::lonnet::escape($key),
2265: &getuhome($thissheet));
2266:
2267: }
2268: my %currentlystored=();
2269: unless ($current=~/^error\:/) {
2270: foreach (split(/\_\_\_\&\_\_\_/,&Apache::lonnet::unescape($current))) {
2271: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2272: $currentlystored{$name}=$value;
2273: }
2274: }
2275: $currentlystored{$fn}=join('___;___',@exportarr);
2276:
2277: my $newstore='';
2278: foreach (keys(%currentlystored)) {
2279: if ($newstore) { $newstore.='___&___'; }
2280: $newstore.=$_.'___=___'.$currentlystored{$_};
2281: }
2282: my $now=time;
2283: if ($stype eq 'studentcalc') {
2284: &Apache::lonnet::reply('put:'.
2285: $ENV{'course.'.$cid.'.domain'}.':'.
2286: $ENV{'course.'.$cid.'.num'}.
2287: ':nohist_calculatedsheets:'.
2288: &Apache::lonnet::escape($key).'='.
2289: &Apache::lonnet::escape($newstore).'&'.
2290: &Apache::lonnet::escape($key).'.time='.$now,
2291: $ENV{'course.'.$cid.'.home'});
2292: } else {
2293: &Apache::lonnet::reply('put:'.
2294: &getudom($thissheet).':'.
2295: &getuname($thissheet).
2296: ':nohist_calculatedsheets_'.
2297: $ENV{'request.course.id'}.':'.
2298: &Apache::lonnet::escape($key).'='.
2299: &Apache::lonnet::escape($newstore).'&'.
2300: &Apache::lonnet::escape($key).'.time='.$now,
2301: &getuhome($thissheet));
2302: }
2303: }
2304: return @exportarr;
2305: }
2306: # ============================================================ Expiration Dates
2307: #
2308: # Load previously cached student spreadsheets for this course
2309: #
2310:
2311: sub expirationdates {
2312: undef %expiredates;
2313: my $cid=$ENV{'request.course.id'};
2314: my $reply=&Apache::lonnet::reply('dump:'.
2315: $ENV{'course.'.$cid.'.domain'}.':'.
2316: $ENV{'course.'.$cid.'.num'}.
2317: ':nohist_expirationdates',
2318: $ENV{'course.'.$cid.'.home'});
2319: unless ($reply=~/^error\:/) {
2320: foreach (split(/\&/,$reply)) {
2321: my ($name,$value)=split(/\=/,$_);
2322: $expiredates{&Apache::lonnet::unescape($name)}
2323: =&Apache::lonnet::unescape($value);
2324: }
2325: }
2326: }
2327:
2328: # ===================================================== Calculated sheets cache
2329: #
2330: # Load previously cached student spreadsheets for this course
2331: #
2332:
2333: sub cachedcsheets {
2334: my $cid=$ENV{'request.course.id'};
2335: my $reply=&Apache::lonnet::reply('dump:'.
2336: $ENV{'course.'.$cid.'.domain'}.':'.
2337: $ENV{'course.'.$cid.'.num'}.
2338: ':nohist_calculatedsheets',
2339: $ENV{'course.'.$cid.'.home'});
2340: unless ($reply=~/^error\:/) {
2341: foreach ( split(/\&/,$reply)) {
2342: my ($name,$value)=split(/\=/,$_);
2343: $oldsheets{&Apache::lonnet::unescape($name)}
2344: =&Apache::lonnet::unescape($value);
2345: }
2346: }
2347: }
2348:
2349: # ===================================================== Calculated sheets cache
2350: #
2351: # Load previously cached assessment spreadsheets for this student
2352: #
2353:
2354: sub cachedssheets {
2355: my ($sname,$sdom,$shome)=@_;
2356: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2357: my $cid=$ENV{'request.course.id'};
2358: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2359: ':nohist_calculatedsheets_'.
2360: $ENV{'request.course.id'},
2361: $shome);
2362: unless ($reply=~/^error\:/) {
2363: foreach ( split(/\&/,$reply)) {
2364: my ($name,$value)=split(/\=/,$_);
2365: $oldsheets{&Apache::lonnet::unescape($name)}
2366: =&Apache::lonnet::unescape($value);
2367: }
2368: }
2369: $loadedcaches{$sname.'_'.$sdom}=1;
2370: }
2371: }
2372:
2373: # ===================================================== Calculated sheets cache
2374: #
2375: # Load previously cached assessment spreadsheets for this student
2376: #
2377:
2378: # ================================================================ Main handler
2379: #
2380: # Interactive call to screen
2381: #
2382: #
2383:
2384:
2385: sub handler {
2386: my $r=shift;
2387:
2388: if ($r->header_only) {
2389: $r->content_type('text/html');
2390: $r->send_http_header;
2391: return OK;
2392: }
2393:
2394: # ---------------------------------------------------- Global directory configs
2395:
2396: $includedir=$r->dir_config('lonIncludes');
2397: $tmpdir=$r->dir_config('lonDaemons').'/tmp/';
2398:
2399: # ----------------------------------------------------- Needs to be in a course
2400:
2401: if ($ENV{'request.course.fn'}) {
2402:
2403: # --------------------------- Get query string for limited number of parameters
2404:
2405: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2406: ['uname','udom','usymb','ufn']);
2407:
2408: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2409: $ENV{'form.ufn'}='default_'.$1;
2410: }
2411:
2412: # -------------------------------------- Interactive loading of specific sheet?
2413: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2414: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2415: }
2416: # ------------------------------------------- Nothing there? Must be login user
2417:
2418: my $aname;
2419: my $adom;
2420:
2421: unless ($ENV{'form.uname'}) {
2422: $aname=$ENV{'user.name'};
2423: $adom=$ENV{'user.domain'};
2424: } else {
2425: $aname=$ENV{'form.uname'};
2426: $adom=$ENV{'form.udom'};
2427: }
2428:
2429: # ------------------------------------------------------------------- Open page
2430:
2431: $r->content_type('text/html');
2432: $r->header_out('Cache-control','no-cache');
2433: $r->header_out('Pragma','no-cache');
2434: $r->send_http_header;
2435:
2436: # --------------------------------------------------------------- Screen output
2437:
2438: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2439: $r->print(<<ENDSCRIPT);
2440: <script language="JavaScript">
2441:
2442: function celledit(cn,cf) {
2443: var cnf=prompt(cn,cf);
2444: if (cnf!=null) {
2445: document.sheet.unewfield.value=cn;
2446: document.sheet.unewformula.value=cnf;
2447: document.sheet.submit();
2448: }
2449: }
2450:
2451: function changesheet(cn) {
2452: document.sheet.unewfield.value=cn;
2453: document.sheet.unewformula.value='changesheet';
2454: document.sheet.submit();
2455: }
2456:
2457: </script>
2458: ENDSCRIPT
2459: $r->print('</head><body bgcolor="#FFFFFF">'.
2460: '<img align=right src=/adm/lonIcons/lonlogos.gif>'.
2461: '<h1>LON-CAPA Spreadsheet</h1>'.
2462: '<form action="'.$r->uri.'" name=sheet method=post>'.
2463: &hiddenfield('uname',$ENV{'form.uname'}).
2464: &hiddenfield('udom',$ENV{'form.udom'}).
2465: &hiddenfield('usymb',$ENV{'form.usymb'}).
2466: &hiddenfield('unewfield','').
2467: &hiddenfield('unewformula',''));
2468:
2469: # ---------------------- Make sure that this gets out, even if user hits "stop"
2470:
2471: $r->rflush();
2472:
2473: # ---------------------------------------------------------------- Full recalc?
2474:
2475:
2476: if ($ENV{'form.forcerecalc'}) {
2477: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2478: undef %spreadsheets;
2479: undef %courserdatas;
2480: undef %userrdatas;
2481: undef %defaultsheets;
2482: undef %updatedata;
2483: }
2484:
2485: # ---------------------------------------- Read new sheet or modified worksheet
2486:
2487: $r->uri=~/\/(\w+)$/;
2488:
2489: my $asheet=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2490:
2491: # ------------------------ If a new formula had been entered, go from work copy
2492:
2493: if ($ENV{'form.unewfield'}) {
2494: $r->print('<h2>Modified Workcopy</h2>');
2495: $ENV{'form.unewformula'}=~s/\'/\"/g;
2496: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2497: $ENV{'form.unewformula'}.'<p>');
2498: &setfilename($asheet,$ENV{'form.ufn'});
2499: &tmpread($asheet,
2500: $ENV{'form.unewfield'},$ENV{'form.unewformula'});
2501:
2502: } elsif ($ENV{'form.saveas'}) {
2503: &setfilename($asheet,$ENV{'form.ufn'});
2504: &tmpread($asheet);
2505: } else {
2506: &readsheet($asheet,$ENV{'form.ufn'});
2507: }
2508:
2509: # -------------------------------------------------- Print out user information
2510:
2511: unless (&gettype($asheet) eq 'classcalc') {
2512: $r->print('<p><b>User:</b> '.&getuname($asheet).
2513: '<br><b>Domain:</b> '.&getudom($asheet));
2514: if (&getcsec($asheet) eq '-1') {
2515: $r->print('<h3><font color=red>'.
2516: 'Not a student in this course</font></h3>');
2517: } else {
2518: $r->print('<br><b>Section/Group:</b> '.&getcsec($asheet));
2519: }
2520: if ($ENV{'form.usymb'}) {
2521: $r->print('<br><b>Assessment:</b> <tt>'.$ENV{'form.usymb'}.'</tt>');
2522: }
2523: }
2524:
2525: # ---------------------------------------------------------------- Course title
2526:
2527: $r->print('<h1>'.
2528: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
2529: '</h1><h3>'.localtime().'</h3>');
2530:
2531: # ---------------------------------------------------- See if user can see this
2532:
2533: if ((&gettype($asheet) eq 'classcalc') ||
2534: (&getuname($asheet) ne $ENV{'user.name'}) ||
2535: (&getudom($asheet) ne $ENV{'user.domain'})) {
2536: unless (&Apache::lonnet::allowed('vgr',&getcid($asheet))) {
2537: $r->print(
2538: '<h1>Access Permission Denied</h1></form></body></html>');
2539: return OK;
2540: }
2541: }
2542:
2543: # ---------------------------------------------------------- Additional options
2544:
2545: $r->print(
2546: '<input type=submit name=forcerecalc value="Completely Recalculate Sheet"><p>'
2547: );
2548: if (&gettype($asheet) eq 'assesscalc') {
2549: $r->print ('<p><font size=+2><a href="/adm/studentcalc?uname='.
2550: &getuname($asheet).
2551: '&udom='.&getudom($asheet).
2552: '">Level up: Student Sheet</a></font><p>');
2553: }
2554:
2555: if ((&gettype($asheet) eq 'studentcalc') &&
2556: (&Apache::lonnet::allowed('vgr',&getcid($asheet)))) {
2557: $r->print (
2558: '<p><font size=+2><a href="/adm/classcalc">'.
2559: 'Level up: Course Sheet</a></font><p>');
2560: }
2561:
2562:
2563: # ----------------------------------------------------------------- Save dialog
2564:
2565:
2566: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2567: my $fname=$ENV{'form.ufn'};
2568: $fname=~s/\_[^\_]+$//;
2569: if ($fname eq 'default') { $fname='course_default'; }
2570: $r->print('<input type=submit name=saveas value="Save as ...">'.
2571: '<input type=text size=20 name=newfn value="'.$fname.
2572: '"> (make default: <input type=checkbox name="makedefufn">)<p>');
2573: }
2574:
2575: $r->print(&hiddenfield('ufn',&getfilename($asheet)));
2576:
2577: # ----------------------------------------------------------------- Load dialog
2578: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2579: $r->print('<p><input type=submit name=load value="Load ...">'.
2580: '<select name="loadthissheet">'.
2581: '<option name="default">Default</option>');
2582: foreach (&othersheets($asheet,&gettype($asheet))) {
2583: $r->print('<option name="'.$_.'"');
2584: if ($ENV{'form.ufn'} eq $_) {
2585: $r->print(' selected');
2586: }
2587: $r->print('>'.$_.'</option>');
2588: }
2589: $r->print('</select><p>');
2590: if (&gettype($asheet) eq 'studentcalc') {
2591: &setothersheets($asheet,&othersheets($asheet,'assesscalc'));
2592: }
2593: }
2594:
2595: # --------------------------------------------------------------- Cached sheets
2596:
2597: &expirationdates();
2598:
2599: undef %oldsheets;
2600: undef %loadedcaches;
2601:
2602: if (&gettype($asheet) eq 'classcalc') {
2603: $r->print("Loading previously calculated student sheets ...<br>\n");
2604: $r->rflush();
2605: &cachedcsheets();
2606: } elsif (&gettype($asheet) eq 'studentcalc') {
2607: $r->print("Loading previously calculated assessment sheets ...<br>\n");
2608: $r->rflush();
2609: &cachedssheets(&getuname($asheet),&getudom($asheet),
2610: &getuhome($asheet));
2611: }
2612:
2613: # ----------------------------------------------------- Update sheet, load rows
2614:
2615: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2616: $r->rflush();
2617:
2618: &updatesheet($asheet);
2619:
2620: $r->print("Updated rows, loading row data ...<br>\n");
2621: $r->rflush();
2622:
2623: &loadrows($asheet,$r);
2624:
2625: $r->print("Loaded row data, calculating sheet ...<br>\n");
2626: $r->rflush();
2627:
2628: my $calcoutput=&calcsheet($asheet);
2629: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2630:
2631: # ---------------------------------------------------- See if something to save
2632:
2633: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2634: my $fname='';
2635: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2636: $fname=~s/\W/\_/g;
2637: if ($fname eq 'default') { $fname='course_default'; }
2638: $fname.='_'.&gettype($asheet);
2639: &setfilename($asheet,$fname);
2640: $ENV{'form.ufn'}=$fname;
2641: $r->print('<p>Saving spreadsheet: '.
2642: &writesheet($asheet,$ENV{'form.makedefufn'}).'<p>');
2643: }
2644: }
2645:
2646: # ------------------------------------------------ Write the modified worksheet
2647:
2648: $r->print('<b>Current sheet:</b> '.&getfilename($asheet).'<p>');
2649:
2650: &tmpwrite($asheet);
2651:
2652: if (&gettype($asheet) eq 'studentcalc') {
2653: $r->print('<br>Show rows with empty A column: ');
2654: } else {
2655: $r->print('<br>Show empty rows: ');
2656: }
2657:
2658: $r->print(&hiddenfield('userselhidden','true').
2659: '<input type=checkbox name=showall onClick="submit()"');
2660:
2661: if ($ENV{'form.showall'}) {
2662: $r->print(' checked');
2663: } else {
2664: unless ($ENV{'form.userselhidden'}) {
2665: unless
2666: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2667: $r->print(' checked');
2668: $ENV{'form.showall'}=1;
2669: }
2670: }
2671: }
2672: $r->print('>');
2673:
2674: if (&gettype($asheet) eq 'classcalc') {
2675: $r->print(
2676: ' Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
2677: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
2678: $r->print('>');
2679: }
2680: # ------------------------------------------------------------- Print out sheet
2681:
2682: &outsheet($r,$asheet);
2683: $r->print('</form></body></html>');
2684:
2685: # ------------------------------------------------------------------------ Done
2686: } else {
2687: # ----------------------------- Not in a course, or not allowed to modify parms
2688: $ENV{'user.error.msg'}=
2689: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2690: return HTTP_NOT_ACCEPTABLE;
2691: }
2692: return OK;
2693:
2694: }
2695:
2696: 1;
2697: __END__
2698:
2699:
2700:
2701:
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