1: #
2: # $Id: lonspreadsheet.pm,v 1.95 2002/07/05 01:31:25 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: #
110: # Some hashes for stats on timing and performance
111: #
112:
113: my %starttimes;
114: my %usedtimes;
115:
116: # Stuff that only the screen handler can know
117:
118: my $includedir;
119: my $tmpdir;
120:
121: # =============================================================================
122: # ===================================== Implements an instance of a spreadsheet
123:
124: sub initsheet {
125: my $safeeval = new Safe(shift);
126: my $safehole = new Safe::Hole;
127: $safeeval->permit("entereval");
128: $safeeval->permit(":base_math");
129: $safeeval->permit("sort");
130: $safeeval->deny(":base_io");
131: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
132: my $code=<<'ENDDEFS';
133: # ---------------------------------------------------- Inside of the safe space
134:
135: #
136: # f: formulas
137: # t: intermediate format (variable references expanded)
138: # v: output values
139: # c: preloaded constants (A-column)
140: # rl: row label
141: # os: other spreadsheets (for student spreadsheet only)
142:
143: undef %v;
144: undef %t;
145: undef %f;
146: undef %c;
147: undef %rl;
148: undef @os;
149:
150: $maxrow=0;
151: $sheettype='';
152:
153: # filename/reference of the sheet
154:
155: $filename='';
156:
157: # user data
158: $uname='';
159: $uhome='';
160: $udom='';
161:
162: # course data
163:
164: $csec='';
165: $chome='';
166: $cnum='';
167: $cdom='';
168: $cid='';
169: $cfn='';
170:
171: # symb
172:
173: $usymb='';
174:
175: # error messages
176:
177: $errormsg='';
178:
179: sub mask {
180: my ($lower,$upper)=@_;
181:
182: $lower=~/([A-Za-z]|\*)(\d+|\*)/;
183: my $la=$1;
184: my $ld=$2;
185:
186: $upper=~/([A-Za-z]|\*)(\d+|\*)/;
187: my $ua=$1;
188: my $ud=$2;
189: my $alpha='';
190: my $num='';
191:
192: if (($la eq '*') || ($ua eq '*')) {
193: $alpha='[A-Za-z]';
194: } else {
195: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
196: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
197: $alpha='['.$la.'-'.$ua.']';
198: } else {
199: $alpha='['.$la.'-Za-'.$ua.']';
200: }
201: }
202:
203: if (($ld eq '*') || ($ud eq '*')) {
204: $num='\d+';
205: } else {
206: if (length($ld)!=length($ud)) {
207: $num.='(';
208: foreach ($ld=~m/\d/g) {
209: $num.='['.$_.'-9]';
210: }
211: if (length($ud)-length($ld)>1) {
212: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
213: }
214: $num.='|';
215: foreach ($ud=~m/\d/g) {
216: $num.='[0-'.$_.']';
217: }
218: $num.=')';
219: } else {
220: my @lda=($ld=~m/\d/g);
221: my @uda=($ud=~m/\d/g);
222: my $i; $j=0; $notdone=1;
223: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
224: if ($lda[$i]==$uda[$i]) {
225: $num.=$lda[$i];
226: $j=$i;
227: } else {
228: $notdone=0;
229: }
230: }
231: if ($j<$#lda-1) {
232: $num.='('.$lda[$j+1];
233: for ($i=$j+2;$i<=$#lda;$i++) {
234: $num.='['.$lda[$i].'-9]';
235: }
236: if ($uda[$j+1]-$lda[$j+1]>1) {
237: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
238: ($#lda-$j-1).'}';
239: }
240: $num.='|'.$uda[$j+1];
241: for ($i=$j+2;$i<=$#uda;$i++) {
242: $num.='[0-'.$uda[$i].']';
243: }
244: $num.=')';
245: } else {
246: if ($lda[$#lda]!=$uda[$#uda]) {
247: $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
248: }
249: }
250: }
251: }
252: return '^'.$alpha.$num."\$";
253: }
254:
255: #-------------------------------------------------------
256:
257: =item UWCALC(hashname,modules,units,date)
258:
259: returns the proportion of the module
260: weights not previously completed by the student.
261:
262: =over 4
263:
264: =item hashname
265:
266: name of the hash the module dates have been inserted into
267:
268: =item modules
269:
270: reference to a cell which contains a comma deliminated list of modules
271: covered by the assignment.
272:
273: =item units
274:
275: reference to a cell which contains a comma deliminated list of module
276: weights with respect to the assignment
277:
278: =item date
279:
280: reference to a cell which contains the date the assignment was completed.
281:
282: =back
283:
284: =cut
285:
286: #-------------------------------------------------------
287: sub UWCALC {
288: my ($hashname,$modules,$units,$date) = @_;
289: my @Modules = split(/,/,$modules);
290: my @Units = split(/,/,$units);
291: my $total_weight;
292: foreach (@Units) {
293: $total_weight += $_;
294: }
295: my $usum=0;
296: for (my $i=0; $i<=$#Modules; $i++) {
297: if (&HASH($hashname,$Modules[$i]) eq $date) {
298: $usum += $Units[$i];
299: }
300: }
301: return $usum/$total_weight;
302: }
303:
304: #-------------------------------------------------------
305:
306: =item CDLSUM(list)
307:
308: returns the sum of the elements in a cell which contains
309: a Comma Deliminate List of numerical values.
310: 'list' is a reference to a cell which contains a comma deliminated list.
311:
312: =cut
313:
314: #-------------------------------------------------------
315: sub CDLSUM {
316: my ($list)=@_;
317: my $sum;
318: foreach (split/,/,$list) {
319: $sum += $_;
320: }
321: return $sum;
322: }
323:
324: #-------------------------------------------------------
325:
326: =item CDLITEM(list,index)
327:
328: returns the item at 'index' in a Comma Deliminated List.
329:
330: =over 4
331:
332: =item list
333:
334: reference to a cell which contains a comma deliminated list.
335:
336: =item index
337:
338: the Perl index of the item requested (first element in list has
339: an index of 0)
340:
341: =back
342:
343: =cut
344:
345: #-------------------------------------------------------
346: sub CDLITEM {
347: my ($list,$index)=@_;
348: my @Temp = split/,/,$list;
349: return $Temp[$index];
350: }
351:
352: #-------------------------------------------------------
353:
354: =item CDLHASH(name,key,value)
355:
356: loads a comma deliminated list of keys into
357: the hash 'name', all with a value of 'value'.
358:
359: =over 4
360:
361: =item name
362:
363: name of the hash.
364:
365: =item key
366:
367: (a pointer to) a comma deliminated list of keys.
368:
369: =item value
370:
371: a single value to be entered for each key.
372:
373: =back
374:
375: =cut
376:
377: #-------------------------------------------------------
378: sub CDLHASH {
379: my ($name,$key,$value)=@_;
380: my @Keys;
381: my @Values;
382: # Check to see if we have multiple $key values
383: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
384: my $keymask = &mask($key);
385: # Assume the keys are addresses
386: my @Temp = grep /$keymask/,keys(%v);
387: @Keys = $v{@Temp};
388: } else {
389: $Keys[0]= $key;
390: }
391: my @Temp;
392: foreach $key (@Keys) {
393: @Temp = (@Temp, split/,/,$key);
394: }
395: @Keys = @Temp;
396: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
397: my $valmask = &mask($value);
398: my @Temp = grep /$valmask/,keys(%v);
399: @Values =$v{@Temp};
400: } else {
401: $Values[0]= $value;
402: }
403: $value = $Values[0];
404: # Add values to hash
405: for (my $i = 0; $i<=$#Keys; $i++) {
406: my $key = $Keys[$i];
407: if (! exists ($hashes{$name}->{$key})) {
408: $hashes{$name}->{$key}->[0]=$value;
409: } else {
410: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
411: $hashes{$name}->{$key} = \@Temp;
412: }
413: }
414: return "hash '$name' updated";
415: }
416:
417: #-------------------------------------------------------
418:
419: =item GETHASH(name,key,index)
420:
421: returns the element in hash 'name'
422: reference by the key 'key', at index 'index' in the values list.
423:
424: =cut
425:
426: #-------------------------------------------------------
427: sub GETHASH {
428: my ($name,$key,$index)=@_;
429: if (! defined($index)) {
430: $index = 0;
431: }
432: if ($key =~ /^[A-z]\d+$/) {
433: $key = $v{$key};
434: }
435: return $hashes{$name}->{$key}->[$index];
436: }
437:
438: #-------------------------------------------------------
439:
440: =item CLEARHASH(name)
441:
442: clears all the values from the hash 'name'
443:
444: =item CLEARHASH(name,key)
445:
446: clears all the values from the hash 'name' associated with the given key.
447:
448: =cut
449:
450: #-------------------------------------------------------
451: sub CLEARHASH {
452: my ($name,$key)=@_;
453: if (defined($key)) {
454: if (exists($hashes{$name}->{$key})) {
455: $hashes{$name}->{$key}=undef;
456: return "hash '$name' key '$key' cleared";
457: }
458: } else {
459: if (exists($hashes{$name})) {
460: $hashes{$name}=undef;
461: return "hash '$name' cleared";
462: }
463: }
464: return "Error in clearing hash";
465: }
466:
467: #-------------------------------------------------------
468:
469: =item HASH(name,key,value)
470:
471: loads values into an internal hash. If a key
472: already has a value associated with it, the values are sorted numerically.
473:
474: =item HASH(name,key)
475:
476: returns the 0th value in the hash 'name' associated with 'key'.
477:
478: =cut
479:
480: #-------------------------------------------------------
481: sub HASH {
482: my ($name,$key,$value)=@_;
483: my @Keys;
484: undef @Keys;
485: my @Values;
486: # Check to see if we have multiple $key values
487: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
488: my $keymask = &mask($key);
489: # Assume the keys are addresses
490: my @Temp = grep /$keymask/,keys(%v);
491: @Keys = $v{@Temp};
492: } else {
493: $Keys[0]= $key;
494: }
495: # If $value is empty, return the first value associated
496: # with the first key.
497: if (! $value) {
498: return $hashes{$name}->{$Keys[0]}->[0];
499: }
500: # Check to see if we have multiple $value(s)
501: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
502: my $valmask = &mask($value);
503: my @Temp = grep /$valmask/,keys(%v);
504: @Values =$v{@Temp};
505: } else {
506: $Values[0]= $value;
507: }
508: # Add values to hash
509: for (my $i = 0; $i<=$#Keys; $i++) {
510: my $key = $Keys[$i];
511: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
512: if (! exists ($hashes{$name}->{$key})) {
513: $hashes{$name}->{$key}->[0]=$value;
514: } else {
515: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
516: $hashes{$name}->{$key} = \@Temp;
517: }
518: }
519: return $Values[-1];
520: }
521:
522: #-------------------------------------------------------
523:
524: =item NUM(range)
525:
526: returns the number of items in the range.
527:
528: =cut
529:
530: #-------------------------------------------------------
531: sub NUM {
532: my $mask=mask(@_);
533: my $num= $#{@{grep(/$mask/,keys(%v))}}+1;
534: return $num;
535: }
536:
537: sub BIN {
538: my ($low,$high,$lower,$upper)=@_;
539: my $mask=mask($lower,$upper);
540: my $num=0;
541: foreach (grep /$mask/,keys(%v)) {
542: if (($v{$_}>=$low) && ($v{$_}<=$high)) {
543: $num++;
544: }
545: }
546: return $num;
547: }
548:
549:
550: #-------------------------------------------------------
551:
552: =item SUM(range)
553:
554: returns the sum of items in the range.
555:
556: =cut
557:
558: #-------------------------------------------------------
559: sub SUM {
560: my $mask=mask(@_);
561: my $sum=0;
562: foreach (grep /$mask/,keys(%v)) {
563: $sum+=$v{$_};
564: }
565: return $sum;
566: }
567:
568: #-------------------------------------------------------
569:
570: =item MEAN(range)
571:
572: compute the average of the items in the range.
573:
574: =cut
575:
576: #-------------------------------------------------------
577: sub MEAN {
578: my $mask=mask(@_);
579: my $sum=0; my $num=0;
580: foreach (grep /$mask/,keys(%v)) {
581: $sum+=$v{$_};
582: $num++;
583: }
584: if ($num) {
585: return $sum/$num;
586: } else {
587: return undef;
588: }
589: }
590:
591: #-------------------------------------------------------
592:
593: =item STDDEV(range)
594:
595: compute the standard deviation of the items in the range.
596:
597: =cut
598:
599: #-------------------------------------------------------
600: sub STDDEV {
601: my $mask=mask(@_);
602: my $sum=0; my $num=0;
603: foreach (grep /$mask/,keys(%v)) {
604: $sum+=$v{$_};
605: $num++;
606: }
607: unless ($num>1) { return undef; }
608: my $mean=$sum/$num;
609: $sum=0;
610: foreach (grep /$mask/,keys(%v)) {
611: $sum+=($v{$_}-$mean)**2;
612: }
613: return sqrt($sum/($num-1));
614: }
615:
616: #-------------------------------------------------------
617:
618: =item PROD(range)
619:
620: compute the product of the items in the range.
621:
622: =cut
623:
624: #-------------------------------------------------------
625: sub PROD {
626: my $mask=mask(@_);
627: my $prod=1;
628: foreach (grep /$mask/,keys(%v)) {
629: $prod*=$v{$_};
630: }
631: return $prod;
632: }
633:
634: #-------------------------------------------------------
635:
636: =item MAX(range)
637:
638: compute the maximum of the items in the range.
639:
640: =cut
641:
642: #-------------------------------------------------------
643: sub MAX {
644: my $mask=mask(@_);
645: my $max='-';
646: foreach (grep /$mask/,keys(%v)) {
647: unless ($max) { $max=$v{$_}; }
648: if (($v{$_}>$max) || ($max eq '-')) { $max=$v{$_}; }
649: }
650: return $max;
651: }
652:
653: #-------------------------------------------------------
654:
655: =item MIN(range)
656:
657: compute the minimum of the items in the range.
658:
659: =cut
660:
661: #-------------------------------------------------------
662: sub MIN {
663: my $mask=mask(@_);
664: my $min='-';
665: foreach (grep /$mask/,keys(%v)) {
666: unless ($max) { $max=$v{$_}; }
667: if (($v{$_}<$min) || ($min eq '-')) { $min=$v{$_}; }
668: }
669: return $min;
670: }
671:
672: #-------------------------------------------------------
673:
674: =item SUMMAX(num,lower,upper)
675:
676: compute the sum of the largest 'num' items in the range from
677: 'lower' to 'upper'
678:
679: =cut
680:
681: #-------------------------------------------------------
682: sub SUMMAX {
683: my ($num,$lower,$upper)=@_;
684: my $mask=mask($lower,$upper);
685: my @inside=();
686: foreach (grep /$mask/,keys(%v)) {
687: push (@inside,$v{$_});
688: }
689: @inside=sort(@inside);
690: my $sum=0; my $i;
691: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
692: $sum+=$inside[$i];
693: }
694: return $sum;
695: }
696:
697: #-------------------------------------------------------
698:
699: =item SUMMIN(num,lower,upper)
700:
701: compute the sum of the smallest 'num' items in the range from
702: 'lower' to 'upper'
703:
704: =cut
705:
706: #-------------------------------------------------------
707: sub SUMMIN {
708: my ($num,$lower,$upper)=@_;
709: my $mask=mask($lower,$upper);
710: my @inside=();
711: foreach (grep /$mask/,keys(%v)) {
712: $inside[$#inside+1]=$v{$_};
713: }
714: @inside=sort(@inside);
715: my $sum=0; my $i;
716: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
717: $sum+=$inside[$i];
718: }
719: return $sum;
720: }
721:
722: sub expandnamed {
723: my $expression=shift;
724: if ($expression=~/^\&/) {
725: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
726: my @vars=split(/\W+/,$formula);
727: my %values=();
728: undef %values;
729: foreach ( @vars ) {
730: my $varname=$_;
731: if ($varname=~/\D/) {
732: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
733: $varname=~s/$var/\(\\w\+\)/g;
734: foreach (keys(%c)) {
735: if ($_=~/$varname/) {
736: $values{$1}=1;
737: }
738: }
739: }
740: }
741: if ($func eq 'EXPANDSUM') {
742: my $result='';
743: foreach (keys(%values)) {
744: my $thissum=$formula;
745: $thissum=~s/$var/$_/g;
746: $result.=$thissum.'+';
747: }
748: $result=~s/\+$//;
749: return $result;
750: } else {
751: return 0;
752: }
753: } else {
754: # it is not a function, so it is a parameter name
755: # We should do the following:
756: # 1. Take the list of parameter names
757: # 2. look through the list for ones that match the parameter we want
758: # 3. If there are no collisions, return the one that matches
759: # 4. If there is a collision, return 'bad parameter name error'
760: my $returnvalue = '';
761: my @matches = ();
762: $#matches = -1;
763: study $expression;
764: foreach $parameter (keys(%c)) {
765: push @matches,$parameter if ($parameter =~ /$expression/);
766: }
767: if ($#matches == 0) {
768: $returnvalue = '$c{\''.$matches[0].'\'}';
769: } else {
770: $returnvalue = "'bad parameter name : $expression'";
771: }
772: return $returnvalue;
773: }
774: }
775:
776: sub sett {
777: %t=();
778: my $pattern='';
779: if ($sheettype eq 'assesscalc') {
780: $pattern='A';
781: } else {
782: $pattern='[A-Z]';
783: }
784: foreach (keys(%f)) {
785: if ($_=~/template\_(\w)/) {
786: my $col=$1;
787: unless ($col=~/^$pattern/) {
788: foreach (keys(%f)) {
789: if ($_=~/A(\d+)/) {
790: my $trow=$1;
791: if ($trow) {
792: # Get the name of this cell
793: my $lb=$col.$trow;
794: # Grab the template declaration
795: $t{$lb}=$f{'template_'.$col};
796: # Replace '#' with the row number
797: $t{$lb}=~s/\#/$trow/g;
798: # Replace '....' with ','
799: $t{$lb}=~s/\.\.+/\,/g;
800: # Replace 'A0' with the value from 'A0'
801: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
802: # Replace parameters
803: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
804: }
805: }
806: }
807: }
808: }
809: }
810: foreach (keys(%f)) {
811: if (($f{$_}) && ($_!~/template\_/)) {
812: my $matches=($_=~/^$pattern(\d+)/);
813: if (($matches) && ($1)) {
814: unless ($f{$_}=~/^\!/) {
815: $t{$_}=$c{$_};
816: }
817: } else {
818: $t{$_}=$f{$_};
819: $t{$_}=~s/\.\.+/\,/g;
820: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
821: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
822: }
823: }
824: }
825: # For some reason 'A0' gets special treatment... This seems superfluous
826: # but I imagine it is here for a reason.
827: $t{'A0'}=$f{'A0'};
828: $t{'A0'}=~s/\.\.+/\,/g;
829: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
830: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
831: }
832:
833: sub calc {
834: undef %v;
835: &sett();
836: my $notfinished=1;
837: my $depth=0;
838: my $errormsg;
839: while ($notfinished) {
840: $notfinished=0;
841: foreach (keys(%t)) {
842: my $old=$v{$_};
843: $v{$_}=eval($t{$_});
844: if ($@) {
845: $v{$_}='"error"';
846: $errormsg.=$_.': '.$@."\n";
847: }
848: if ($v{$_} ne $old) { $notfinished=1; }
849: }
850: $depth++;
851: if ($depth>100) {
852: undef %v;
853: return 'Maximum calculation depth exceeded';
854: }
855: }
856: return $errormsg;
857: }
858:
859: sub templaterow {
860: my @cols=();
861: $cols[0]='<b><font size=+1>Template</font></b>';
862: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
863: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
864: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
865: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
866: my $fm=$f{'template_'.$_};
867: $fm=~s/[\'\"]/\&\#34;/g;
868: $cols[$#cols+1]="'template_$_','$fm'".'___eq___'.$fm;
869: }
870: return @cols;
871: }
872:
873: sub outrowassess {
874: my $n=shift;
875: my @cols=();
876: if ($n) {
877: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{'A'.$n});
878: if ($rl{$usy}) {
879: $cols[0]=$rl{$usy}.'<br>'.
880: '<select name="sel_'.$n.'" onChange="changesheet('.$n.
881: ')"><option name="default">Default</option>';
882: } else { $cols[0]=''; }
883: foreach (@os) {
884: $cols[0].='<option name="'.$_.'"';
885: if ($ufn eq $_) {
886: $cols[0].=' selected';
887: }
888: $cols[0].='>'.$_.'</option>';
889: }
890: $cols[0].='</select>';
891: } else {
892: $cols[0]='<b><font size=+1>Export</font></b>';
893: }
894: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
895: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
896: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
897: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
898: my $fm=$f{$_.$n};
899: $fm=~s/[\'\"]/\&\#34;/g;
900: push(@cols,"'$_$n','$fm'".'___eq___'.$v{$_.$n});
901: }
902: return @cols;
903: }
904:
905: sub outrow {
906: my $n=shift;
907: my @cols=();
908: if ($n) {
909: $cols[0]=$rl{$f{'A'.$n}};
910: } else {
911: $cols[0]='<b><font size=+1>Export</font></b>';
912: }
913: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
914: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
915: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
916: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
917: my $fm=$f{$_.$n};
918: $fm=~s/[\'\"]/\&\#34;/g;
919: $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
920: }
921: return @cols;
922: }
923:
924: sub exportrowa {
925: my @exportarray=();
926: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
927: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
928: $exportarray[$#exportarray+1]=$v{$_.'0'};
929: }
930: return @exportarray;
931: }
932:
933: # ------------------------------------------- End of "Inside of the safe space"
934: ENDDEFS
935: $safeeval->reval($code);
936: return $safeeval;
937: }
938:
939: # ------------------------------------------------ Add or change formula values
940:
941: sub setformulas {
942: my ($safeeval,%f)=@_;
943: %{$safeeval->varglob('f')}=%f;
944: }
945:
946: # ------------------------------------------------ Add or change formula values
947:
948: sub setconstants {
949: my ($safeeval,%c)=@_;
950: %{$safeeval->varglob('c')}=%c;
951: }
952:
953: # --------------------------------------------- Set names of other spreadsheets
954:
955: sub setothersheets {
956: my ($safeeval,@os)=@_;
957: @{$safeeval->varglob('os')}=@os;
958: }
959:
960: # ------------------------------------------------ Add or change formula values
961:
962: sub setrowlabels {
963: my ($safeeval,%rl)=@_;
964: %{$safeeval->varglob('rl')}=%rl;
965: }
966:
967: # ------------------------------------------------------- Calculate spreadsheet
968:
969: sub calcsheet {
970: my $safeeval=shift;
971: return $safeeval->reval('&calc();');
972: }
973:
974: # ------------------------------------------------------------------ Get values
975:
976: sub getvalues {
977: my $safeeval=shift;
978: return $safeeval->reval('%v');
979: }
980:
981: # ---------------------------------------------------------------- Get formulas
982:
983: sub getformulas {
984: my $safeeval=shift;
985: return %{$safeeval->varglob('f')};
986: }
987:
988: # -------------------------------------------------------------------- Get type
989:
990: sub gettype {
991: my $safeeval=shift;
992: return $safeeval->reval('$sheettype');
993: }
994:
995: # ------------------------------------------------------------------ Set maxrow
996:
997: sub setmaxrow {
998: my ($safeeval,$row)=@_;
999: $safeeval->reval('$maxrow='.$row.';');
1000: }
1001:
1002: # ------------------------------------------------------------------ Get maxrow
1003:
1004: sub getmaxrow {
1005: my $safeeval=shift;
1006: return $safeeval->reval('$maxrow');
1007: }
1008:
1009: # ---------------------------------------------------------------- Set filename
1010:
1011: sub setfilename {
1012: my ($safeeval,$fn)=@_;
1013: $safeeval->reval('$filename="'.$fn.'";');
1014: }
1015:
1016: # ---------------------------------------------------------------- Get filename
1017:
1018: sub getfilename {
1019: my $safeeval=shift;
1020: return $safeeval->reval('$filename');
1021: }
1022:
1023: # --------------------------------------------------------------- Get course ID
1024:
1025: sub getcid {
1026: my $safeeval=shift;
1027: return $safeeval->reval('$cid');
1028: }
1029:
1030: # --------------------------------------------------------- Get course filename
1031:
1032: sub getcfn {
1033: my $safeeval=shift;
1034: return $safeeval->reval('$cfn');
1035: }
1036:
1037: # ----------------------------------------------------------- Get course number
1038:
1039: sub getcnum {
1040: my $safeeval=shift;
1041: return $safeeval->reval('$cnum');
1042: }
1043:
1044: # ------------------------------------------------------------- Get course home
1045:
1046: sub getchome {
1047: my $safeeval=shift;
1048: return $safeeval->reval('$chome');
1049: }
1050:
1051: # ----------------------------------------------------------- Get course domain
1052:
1053: sub getcdom {
1054: my $safeeval=shift;
1055: return $safeeval->reval('$cdom');
1056: }
1057:
1058: # ---------------------------------------------------------- Get course section
1059:
1060: sub getcsec {
1061: my $safeeval=shift;
1062: return $safeeval->reval('$csec');
1063: }
1064:
1065: # --------------------------------------------------------------- Get user name
1066:
1067: sub getuname {
1068: my $safeeval=shift;
1069: return $safeeval->reval('$uname');
1070: }
1071:
1072: # ------------------------------------------------------------- Get user domain
1073:
1074: sub getudom {
1075: my $safeeval=shift;
1076: return $safeeval->reval('$udom');
1077: }
1078:
1079: # --------------------------------------------------------------- Get user home
1080:
1081: sub getuhome {
1082: my $safeeval=shift;
1083: return $safeeval->reval('$uhome');
1084: }
1085:
1086: # -------------------------------------------------------------------- Get symb
1087:
1088: sub getusymb {
1089: my $safeeval=shift;
1090: return $safeeval->reval('$usymb');
1091: }
1092:
1093: # ------------------------------------------------------------- Export of A-row
1094:
1095: sub exportdata {
1096: my $safeeval=shift;
1097: return $safeeval->reval('&exportrowa()');
1098: }
1099:
1100:
1101: # ========================================================== End of Spreadsheet
1102: # =============================================================================
1103:
1104: #
1105: # Procedures for screen output
1106: #
1107: # --------------------------------------------- Produce output row n from sheet
1108:
1109: sub rown {
1110: my ($safeeval,$n)=@_;
1111: my $defaultbg;
1112: my $rowdata='';
1113: my $dataflag=0;
1114: unless ($n eq '-') {
1115: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1116: } else {
1117: $defaultbg='#E0FF';
1118: }
1119: unless ($ENV{'form.showcsv'}) {
1120: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1121: } else {
1122: $rowdata.="\n".'"'.$n.'"';
1123: }
1124: my $showf=0;
1125: my $proc;
1126: my $maxred;
1127: my $sheettype=&gettype($safeeval);
1128: if ($sheettype eq 'studentcalc') {
1129: $proc='&outrowassess';
1130: $maxred=26;
1131: } else {
1132: $proc='&outrow';
1133: }
1134: if ($sheettype eq 'assesscalc') {
1135: $maxred=1;
1136: } else {
1137: $maxred=26;
1138: }
1139: if ($n eq '-') { $proc='&templaterow'; $n=-1; $dataflag=1; }
1140: foreach ($safeeval->reval($proc.'('.$n.')')) {
1141: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1142: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1143: if ((($vl ne '') || ($vl eq '0')) &&
1144: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1145: if ($showf==0) { $vl=$_; }
1146: unless ($ENV{'form.showcsv'}) {
1147: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1148: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1149: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1150: if ($vl eq '') {
1151: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1152: }
1153: $rowdata.=
1154: '<td bgcolor='.$bgcolor.'><a href="javascript:celledit('.$fm.');">'.$vl.
1155: '</a></td>';
1156: } else {
1157: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1158: }
1159: } else {
1160: $rowdata.=',"'.$vl.'"';
1161: }
1162: $showf++;
1163: } # End of foreach($safeval...)
1164: if ($ENV{'form.showall'} || ($dataflag)) {
1165: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1166: } else {
1167: return '';
1168: }
1169: }
1170:
1171: # ------------------------------------------------------------- Print out sheet
1172:
1173: sub outsheet {
1174: my ($r,$safeeval)=@_;
1175: my $maxred;
1176: my $realm;
1177: if (&gettype($safeeval) eq 'assesscalc') {
1178: $maxred=1;
1179: $realm='Assessment';
1180: } elsif (&gettype($safeeval) eq 'studentcalc') {
1181: $maxred=26;
1182: $realm='User';
1183: } else {
1184: $maxred=26;
1185: $realm='Course';
1186: }
1187: my $maxyellow=52-$maxred;
1188: my $tabledata;
1189: unless ($ENV{'form.showcsv'}) {
1190: $tabledata=
1191: '<table border=2><tr><th colspan=2 rowspan=2><font size=+2>'.
1192: $realm.'</font></th>'.
1193: '<td bgcolor=#FFDDDD colspan='.$maxred.
1194: '><b><font size=+1>Import</font></b></td>'.
1195: '<td colspan='.$maxyellow.
1196: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1197: my $showf=0;
1198: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1199: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1200: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1201: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1202: $showf++;
1203: if ($showf<=$maxred) {
1204: $tabledata.='<td bgcolor="#FFDDDD">';
1205: } else {
1206: $tabledata.='<td>';
1207: }
1208: $tabledata.="<b><font size=+1>$_</font></b></td>";
1209: }
1210: $tabledata.='</tr>'.&rown($safeeval,'-').&rown($safeeval,0);
1211: } else { $tabledata='<pre>'; }
1212:
1213: $r->print($tabledata);
1214:
1215: my $row;
1216: my $maxrow=&getmaxrow($safeeval);
1217:
1218: my @sortby=();
1219: my @sortidx=();
1220: for ($row=1;$row<=$maxrow;$row++) {
1221: $sortby[$row-1]=$safeeval->reval('$f{"A'.$row.'"}');
1222: $sortidx[$row-1]=$row-1;
1223: }
1224: @sortidx=sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
1225:
1226: my $what='Student';
1227: if (&gettype($safeeval) eq 'assesscalc') {
1228: $what='Item';
1229: } elsif (&gettype($safeeval) eq 'studentcalc') {
1230: $what='Assessment';
1231: }
1232:
1233: my $n=0;
1234: for ($row=0;$row<$maxrow;$row++) {
1235: my $thisrow=&rown($safeeval,$sortidx[$row]+1);
1236: if ($thisrow) {
1237: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1238: $r->print("</table>\n<br>\n");
1239: $r->rflush();
1240: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1241: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1242: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1243: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1244: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1245: $r->print('<td>'.$_.'</td>');
1246: }
1247: $r->print('</tr>');
1248: }
1249: $n++;
1250: $r->print($thisrow);
1251: }
1252: }
1253: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1254: }
1255:
1256: #
1257: # ----------------------------------------------- Read list of available sheets
1258: #
1259: sub othersheets {
1260: my ($safeeval,$stype)=@_;
1261: #
1262: my $cnum=&getcnum($safeeval);
1263: my $cdom=&getcdom($safeeval);
1264: my $chome=&getchome($safeeval);
1265: #
1266: my @alternatives=();
1267: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1268: my ($tmp) = keys(%results);
1269: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1270: @alternatives = sort (keys(%results));
1271: }
1272: return @alternatives;
1273: }
1274:
1275:
1276: #
1277: # -------------------------------------- Parse a spreadsheet
1278: #
1279: sub parse_sheet {
1280: # $sheetxml is a scalar reference or a scalar
1281: my ($sheetxml) = @_;
1282: if (! ref($sheetxml)) {
1283: my $tmp = $sheetxml;
1284: $sheetxml = \$tmp;
1285: }
1286: my %f;
1287: my $parser=HTML::TokeParser->new($sheetxml);
1288: my $token;
1289: while ($token=$parser->get_token) {
1290: if ($token->[0] eq 'S') {
1291: if ($token->[1] eq 'field') {
1292: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1293: $parser->get_text('/field');
1294: }
1295: if ($token->[1] eq 'template') {
1296: $f{'template_'.$token->[2]->{'col'}}=
1297: $parser->get_text('/template');
1298: }
1299: }
1300: }
1301: return \%f;
1302: }
1303:
1304: #
1305: # -------------------------------------- Read spreadsheet formulas for a course
1306: #
1307:
1308: sub readsheet {
1309: my ($safeeval,$fn)=@_;
1310: my $stype=&gettype($safeeval);
1311: my $cnum=&getcnum($safeeval);
1312: my $cdom=&getcdom($safeeval);
1313: my $chome=&getchome($safeeval);
1314:
1315: if (! defined($fn)) {
1316: # There is no filename. Look for defaults in course and global, cache
1317: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1318: my %tmphash = &Apache::lonnet::get('environment',
1319: ['spreadsheet_default_'.$stype],
1320: $cdom,$cnum);
1321: my ($tmp) = keys(%tmphash);
1322: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1323: $fn = 'default_'.$stype;
1324: } else {
1325: $fn = $tmphash{'spreadsheet_default_'.$stype};
1326: }
1327: unless (($fn) && ($fn!~/^error\:/)) {
1328: $fn='default_'.$stype;
1329: }
1330: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1331: }
1332: }
1333:
1334: # ---------------------------------------------------------- fn now has a value
1335:
1336: &setfilename($safeeval,$fn);
1337:
1338: # ------------------------------------------------------ see if sheet is cached
1339: my $fstring='';
1340: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1341: &setformulas($safeeval,split(/\_\_\_\;\_\_\_/,$fstring));
1342: } else {
1343:
1344: # ---------------------------------------------------- Not cached, need to read
1345:
1346: my %f=();
1347:
1348: if ($fn=~/^default\_/) {
1349: my $sheetxml='';
1350: my $fh;
1351: my $dfn=$fn;
1352: $dfn=~s/\_/\./g;
1353: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1354: $sheetxml=join('',<$fh>);
1355: } else {
1356: $sheetxml='<field row="0" col="A">"Error"</field>';
1357: }
1358: %f=%{&parse_sheet(\$sheetxml)};
1359: } elsif($fn=~/\/*\.spreadsheet$/) {
1360: my $sheetxml=&Apache::lonnet::getfile
1361: (&Apache::lonnet::filelocation('',$fn));
1362: if ($sheetxml == -1) {
1363: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1364: .$fn.'"</field>';
1365: }
1366: %f=%{&parse_sheet(\$sheetxml)};
1367: } else {
1368: my $sheet='';
1369: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1370: my ($tmp) = keys(%tmphash);
1371: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1372: foreach (keys(%tmphash)) {
1373: $f{$_}=$tmphash{$_};
1374: }
1375: }
1376: }
1377: # --------------------------------------------------------------- Cache and set
1378: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1379: &setformulas($safeeval,%f);
1380: }
1381: }
1382:
1383: # -------------------------------------------------------- Make new spreadsheet
1384:
1385: sub makenewsheet {
1386: my ($uname,$udom,$stype,$usymb)=@_;
1387: my $safeeval=initsheet($stype);
1388: $safeeval->reval(
1389: '$uname="'.$uname.
1390: '";$udom="'.$udom.
1391: '";$uhome="'.&Apache::lonnet::homeserver($uname,$udom).
1392: '";$sheettype="'.$stype.
1393: '";$usymb="'.$usymb.
1394: '";$csec="'.&Apache::lonnet::usection($udom,$uname,
1395: $ENV{'request.course.id'}).
1396: '";$cid="'.$ENV{'request.course.id'}.
1397: '";$cfn="'.$ENV{'request.course.fn'}.
1398: '";$cnum="'.$ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1399: '";$cdom="'.$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1400: '";$chome="'.$ENV{'course.'.$ENV{'request.course.id'}.'.home'}.'";');
1401: return $safeeval;
1402: }
1403:
1404: # ------------------------------------------------------------ Save spreadsheet
1405:
1406: sub writesheet {
1407: my ($safeeval,$makedef)=@_;
1408: my $cid=&getcid($safeeval);
1409: if (&Apache::lonnet::allowed('opa',$cid)) {
1410: my %f=&getformulas($safeeval);
1411: my $stype=&gettype($safeeval);
1412: my $cnum=&getcnum($safeeval);
1413: my $cdom=&getcdom($safeeval);
1414: my $chome=&getchome($safeeval);
1415: my $fn=&getfilename($safeeval);
1416:
1417: # ------------------------------------------------------------- Cache new sheet
1418: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1419: # ----------------------------------------------------------------- Write sheet
1420: my $sheetdata='';
1421: foreach (keys(%f)) {
1422: unless ($f{$_} eq 'import') {
1423: $sheetdata.=&Apache::lonnet::escape($_).'='.
1424: &Apache::lonnet::escape($f{$_}).'&';
1425: }
1426: }
1427: $sheetdata=~s/\&$//;
1428: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1429: $sheetdata,$chome);
1430: if ($reply eq 'ok') {
1431: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1432: $stype.'_spreadsheets:'.
1433: &Apache::lonnet::escape($fn).'='.$ENV{'user.name'}.'@'.
1434: $ENV{'user.domain'},
1435: $chome);
1436: if ($reply eq 'ok') {
1437: if ($makedef) {
1438: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1439: ':environment:spreadsheet_default_'.$stype.'='.
1440: &Apache::lonnet::escape($fn),
1441: $chome);
1442: } else {
1443: return $reply;
1444: }
1445: } else {
1446: return $reply;
1447: }
1448: } else {
1449: return $reply;
1450: }
1451: }
1452: return 'unauthorized';
1453: }
1454:
1455: # ----------------------------------------------- Make a temp copy of the sheet
1456: # "Modified workcopy" - interactive only
1457: #
1458:
1459: sub tmpwrite {
1460: my $safeeval=shift;
1461: my $fn=$ENV{'user.name'}.'_'.
1462: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1463: &getfilename($safeeval);
1464: $fn=~s/\W/\_/g;
1465: $fn=$tmpdir.$fn.'.tmp';
1466: my $fh;
1467: if ($fh=Apache::File->new('>'.$fn)) {
1468: print $fh join("\n",&getformulas($safeeval));
1469: }
1470: }
1471:
1472: # ---------------------------------------------------------- Read the temp copy
1473:
1474: sub tmpread {
1475: my ($safeeval,$nfield,$nform)=@_;
1476: my $fn=$ENV{'user.name'}.'_'.
1477: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1478: &getfilename($safeeval);
1479: $fn=~s/\W/\_/g;
1480: $fn=$tmpdir.$fn.'.tmp';
1481: my $fh;
1482: my %fo=();
1483: my $countrows=0;
1484: if ($fh=Apache::File->new($fn)) {
1485: my $name;
1486: while ($name=<$fh>) {
1487: chomp($name);
1488: my $value=<$fh>;
1489: chomp($value);
1490: $fo{$name}=$value;
1491: if ($name=~/^A(\d+)$/) {
1492: if ($1>$countrows) {
1493: $countrows=$1;
1494: }
1495: }
1496: }
1497: }
1498: if ($nform eq 'changesheet') {
1499: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1500: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1501: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1502: }
1503: } elsif ($nfield eq 'insertrow') {
1504: $countrows++;
1505: my $newrow=substr('000000'.$countrows,-7);
1506: if ($nform eq 'top') {
1507: $fo{'A'.$countrows}='--- '.$newrow;
1508: } else {
1509: $fo{'A'.$countrows}='~~~ '.$newrow;
1510: }
1511: } else {
1512: if ($nfield) { $fo{$nfield}=$nform; }
1513: }
1514: &setformulas($safeeval,%fo);
1515: }
1516:
1517: # ================================================================== Parameters
1518: # -------------------------------------------- Figure out a cascading parameter
1519: #
1520: # For this function to work
1521: #
1522: # * parmhash needs to be tied
1523: # * courseopt and useropt need to be initialized for this user and course
1524: #
1525:
1526: sub parmval {
1527: my ($what,$safeeval)=@_;
1528: my $cid=&getcid($safeeval);
1529: my $csec=&getcsec($safeeval);
1530: my $uname=&getuname($safeeval);
1531: my $udom=&getudom($safeeval);
1532: my $symb=&getusymb($safeeval);
1533:
1534: unless ($symb) { return ''; }
1535: my $result='';
1536:
1537: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1538: # ----------------------------------------------------- Cascading lookup scheme
1539: my $rwhat=$what;
1540: $what=~s/^parameter\_//;
1541: $what=~s/\_([^\_]+)$/\.$1/;
1542:
1543: my $symbparm=$symb.'.'.$what;
1544: my $mapparm=$mapname.'___(all).'.$what;
1545: my $usercourseprefix=$uname.'_'.$udom.'_'.$cid;
1546:
1547: my $seclevel=
1548: $usercourseprefix.'.['.
1549: $csec.'].'.$what;
1550: my $seclevelr=
1551: $usercourseprefix.'.['.
1552: $csec.'].'.$symbparm;
1553: my $seclevelm=
1554: $usercourseprefix.'.['.
1555: $csec.'].'.$mapparm;
1556:
1557: my $courselevel=
1558: $usercourseprefix.'.'.$what;
1559: my $courselevelr=
1560: $usercourseprefix.'.'.$symbparm;
1561: my $courselevelm=
1562: $usercourseprefix.'.'.$mapparm;
1563:
1564: # ---------------------------------------------------------- fourth, check user
1565:
1566: if ($uname) {
1567:
1568: if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; }
1569:
1570: if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; }
1571:
1572: if ($useropt{$courselevel}) { return $useropt{$courselevel}; }
1573:
1574: }
1575:
1576: # --------------------------------------------------------- third, check course
1577:
1578: if ($csec) {
1579:
1580: if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; }
1581:
1582: if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; }
1583:
1584: if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; }
1585:
1586: }
1587:
1588: if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; }
1589:
1590: if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; }
1591:
1592: if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; }
1593:
1594: # ----------------------------------------------------- second, check map parms
1595:
1596: my $thisparm=$parmhash{$symbparm};
1597: if ($thisparm) { return $thisparm; }
1598:
1599: # -------------------------------------------------------- first, check default
1600:
1601: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1602:
1603: }
1604:
1605: # ---------------------------------------------- Update rows for course listing
1606:
1607: sub updateclasssheet {
1608: my $safeeval=shift;
1609: my $cnum=&getcnum($safeeval);
1610: my $cdom=&getcdom($safeeval);
1611: my $cid=&getcid($safeeval);
1612: my $chome=&getchome($safeeval);
1613:
1614: # ---------------------------------------------- Read class list and row labels
1615:
1616: my $classlst=&Apache::lonnet::reply
1617: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1618: my %currentlist=();
1619: my $now=time;
1620: unless ($classlst=~/^error\:/) {
1621: foreach (split(/\&/,$classlst)) {
1622: my ($name,$value)=split(/\=/,$_);
1623: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1624: my $active=1;
1625: if (($end) && ($now>$end)) { $active=0; }
1626: if ($active) {
1627: my $rowlabel='';
1628: $name=&Apache::lonnet::unescape($name);
1629: my ($sname,$sdom)=split(/\:/,$name);
1630: my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
1631: if ($ssec==-1) {
1632: unless ($ENV{'form.showcsv'}) {
1633: $rowlabel='<font color=red>Data not available: '.$name.
1634: '</font>';
1635: } else {
1636: $rowlabel='ERROR","'.$name.
1637: '","Data not available","","","';
1638: }
1639: } else {
1640: my %reply=&Apache::lonnet::idrget($sdom,$sname);
1641: my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1642: ':environment:firstname&middlename&lastname&generation',
1643: &Apache::lonnet::homeserver($sname,$sdom));
1644: unless ($ENV{'form.showcsv'}) {
1645: $rowlabel='<a href="/adm/studentcalc?uname='.$sname.
1646: '&udom='.$sdom.'">'.
1647: $ssec.' '.$reply{$sname}.'<br>';
1648: foreach ( split(/\&/,$reply)) {
1649: $rowlabel.=&Apache::lonnet::unescape($_).' ';
1650: }
1651: $rowlabel.='</a>';
1652: } else {
1653: $rowlabel=$ssec.'","'.$reply{$sname}.'"';
1654: my $ncount=0;
1655: foreach (split(/\&/,$reply)) {
1656: $rowlabel.=',"'.&Apache::lonnet::unescape($_).'"';
1657: $ncount++;
1658: }
1659: unless ($ncount==4) { $rowlabel.=',""'; }
1660: $rowlabel=~s/\"$//;
1661: }
1662: }
1663: $currentlist{&Apache::lonnet::unescape($name)}=$rowlabel;
1664: }
1665: } # end of foreach (split(/\&/,$classlst))
1666: #
1667: # -------------------- Find discrepancies between the course row table and this
1668: #
1669: my %f=&getformulas($safeeval);
1670: my $changed=0;
1671:
1672: my $maxrow=0;
1673: my %existing=();
1674:
1675: # ----------------------------------------------------------- Now obsolete rows
1676: foreach (keys(%f)) {
1677: if ($_=~/^A(\d+)/) {
1678: $maxrow=($1>$maxrow)?$1:$maxrow;
1679: $existing{$f{$_}}=1;
1680: unless ((defined($currentlist{$f{$_}})) || (!$1)) {
1681: $f{$_}='!!! Obsolete';
1682: $changed=1;
1683: }
1684: }
1685: }
1686:
1687: # -------------------------------------------------------- New and unknown keys
1688:
1689: foreach (sort keys(%currentlist)) {
1690: unless ($existing{$_}) {
1691: $changed=1;
1692: $maxrow++;
1693: $f{'A'.$maxrow}=$_;
1694: }
1695: }
1696:
1697: if ($changed) { &setformulas($safeeval,%f); }
1698:
1699: &setmaxrow($safeeval,$maxrow);
1700: &setrowlabels($safeeval,%currentlist);
1701:
1702: } else {
1703: return 'Could not access course data';
1704: }
1705: }
1706:
1707: # ----------------------------------- Update rows for student and assess sheets
1708:
1709: sub updatestudentassesssheet {
1710: my $safeeval=shift;
1711: my %bighash;
1712: my $stype=&gettype($safeeval);
1713: my %current=();
1714: unless ($updatedata{$ENV{'request.course.fn'}.'_'.$stype}) {
1715: # -------------------------------------------------------------------- Tie hash
1716: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1717: &GDBM_READER,0640)) {
1718: # --------------------------------------------------------- Get all assessments
1719:
1720: my %allkeys=('timestamp' =>
1721: 'Timestamp of Last Transaction<br>timestamp',
1722: 'subnumber' =>
1723: 'Number of Submissions<br>subnumber',
1724: 'tutornumber' =>
1725: 'Number of Tutor Responses<br>tutornumber',
1726: 'totalpoints' =>
1727: 'Total Points Granted<br>totalpoints');
1728:
1729: my $adduserstr='';
1730: if ((&getuname($safeeval) ne $ENV{'user.name'}) ||
1731: (&getudom($safeeval) ne $ENV{'user.domain'})) {
1732: $adduserstr='&uname='.&getuname($safeeval).
1733: '&udom='.&getudom($safeeval);
1734: }
1735:
1736: my %allassess=('_feedback' =>
1737: '<a href="/adm/assesscalc?usymb=_feedback'.$adduserstr.
1738: '">Feedback</a>',
1739: '_evaluation' =>
1740: '<a href="/adm/assesscalc?usymb=_evaluation'.$adduserstr.
1741: '">Evaluation</a>',
1742: '_tutoring' =>
1743: '<a href="/adm/assesscalc?usymb=_tutoring'.$adduserstr.
1744: '">Tutoring</a>',
1745: '_discussion' =>
1746: '<a href="/adm/assesscalc?usymb=_discussion'.$adduserstr.
1747: '">Discussion</a>'
1748: );
1749:
1750: foreach (keys(%bighash)) {
1751: if ($_=~/^src\_(\d+)\.(\d+)$/) {
1752: my $mapid=$1;
1753: my $resid=$2;
1754: my $id=$mapid.'.'.$resid;
1755: my $srcf=$bighash{$_};
1756: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1757: my $symb=
1758: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1759: '___'.$resid.'___'.
1760: &Apache::lonnet::declutter($srcf);
1761: $allassess{$symb}=
1762: '<a href="/adm/assesscalc?usymb='.$symb.$adduserstr.'">'.
1763: $bighash{'title_'.$id}.'</a>';
1764: if ($stype eq 'assesscalc') {
1765: foreach (split(/\,/,
1766: &Apache::lonnet::metadata($srcf,'keys'))) {
1767: if (($_=~/^stores\_(.*)/) || ($_=~/^parameter\_(.*)/)) {
1768: my $key=$_;
1769: my $display=
1770: &Apache::lonnet::metadata($srcf,$key.'.display');
1771: unless ($display) {
1772: $display.=
1773: &Apache::lonnet::metadata($srcf,$key.'.name');
1774: }
1775: $display.='<br>'.$key;
1776: $allkeys{$key}=$display;
1777: }
1778: } # end of foreach
1779: }
1780: }
1781: }
1782: } # end of foreach (keys(%bighash))
1783: untie(%bighash);
1784:
1785: #
1786: # %allkeys has a list of storage and parameter displays by unikey
1787: # %allassess has a list of all resource displays by symb
1788: #
1789:
1790: if ($stype eq 'assesscalc') {
1791: %current=%allkeys;
1792: } elsif ($stype eq 'studentcalc') {
1793: %current=%allassess;
1794: }
1795: $updatedata{$ENV{'request.course.fn'}.'_'.$stype}=
1796: join('___;___',%current);
1797: } else {
1798: return 'Could not access course data';
1799: }
1800: # ------------------------------------------------------ Get current from cache
1801: } else {
1802: %current=split(/\_\_\_\;\_\_\_/,
1803: $updatedata{$ENV{'request.course.fn'}.'_'.$stype});
1804: }
1805: # -------------------- Find discrepancies between the course row table and this
1806: #
1807: my %f=&getformulas($safeeval);
1808: my $changed=0;
1809:
1810: my $maxrow=0;
1811: my %existing=();
1812:
1813: # ----------------------------------------------------------- Now obsolete rows
1814: foreach (keys(%f)) {
1815: if ($_=~/^A(\d+)/) {
1816: $maxrow=($1>$maxrow)?$1:$maxrow;
1817: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1818: $existing{$usy}=1;
1819: unless ((defined($current{$usy})) || (!$1)) {
1820: $f{$_}='!!! Obsolete';
1821: $changed=1;
1822: } elsif ($ufn) {
1823: $current{$usy}
1824: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1825: }
1826: }
1827: }
1828:
1829: # -------------------------------------------------------- New and unknown keys
1830:
1831: foreach (keys(%current)) {
1832: unless ($existing{$_}) {
1833: $changed=1;
1834: $maxrow++;
1835: $f{'A'.$maxrow}=$_;
1836: }
1837: }
1838:
1839: if ($changed) { &setformulas($safeeval,%f); }
1840:
1841: &setmaxrow($safeeval,$maxrow);
1842: &setrowlabels($safeeval,%current);
1843:
1844: undef %current;
1845: undef %existing;
1846: }
1847:
1848: # ------------------------------------------------ Load data for one assessment
1849:
1850: sub loadstudent {
1851: my $safeeval=shift;
1852: my %c=();
1853: my %f=&getformulas($safeeval);
1854: $cachedassess=&getuname($safeeval).':'.&getudom($safeeval);
1855: %cachedstores=();
1856: {
1857: my $reply=&Apache::lonnet::reply('dump:'.&getudom($safeeval).':'.
1858: &getuname($safeeval).':'.
1859: &getcid($safeeval),
1860: &getuhome($safeeval));
1861: unless ($reply=~/^error\:/) {
1862: foreach ( split(/\&/,$reply)) {
1863: my ($name,$value)=split(/\=/,$_);
1864: $cachedstores{&Apache::lonnet::unescape($name)}=
1865: &Apache::lonnet::unescape($value);
1866: }
1867: }
1868: }
1869: my @assessdata=();
1870: foreach (keys(%f)) {
1871: if ($_=~/^A(\d+)/) {
1872: my $row=$1;
1873: unless (($f{$_}=~/^\!/) || ($row==0)) {
1874: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1875: @assessdata=&exportsheet(&getuname($safeeval),
1876: &getudom($safeeval),
1877: 'assesscalc',$usy,$ufn);
1878: my $index=0;
1879: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1880: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1881: if ($assessdata[$index]) {
1882: my $col=$_;
1883: if ($assessdata[$index]=~/\D/) {
1884: $c{$col.$row}="'".$assessdata[$index]."'";
1885: } else {
1886: $c{$col.$row}=$assessdata[$index];
1887: }
1888: unless ($col eq 'A') {
1889: $f{$col.$row}='import';
1890: }
1891: }
1892: $index++;
1893: }
1894: }
1895: }
1896: }
1897: $cachedassess='';
1898: undef %cachedstores;
1899: &setformulas($safeeval,%f);
1900: &setconstants($safeeval,%c);
1901: }
1902:
1903: # --------------------------------------------------- Load data for one student
1904:
1905: sub loadcourse {
1906: my ($safeeval,$r)=@_;
1907: my %c=();
1908: my %f=&getformulas($safeeval);
1909: my $total=0;
1910: foreach (keys(%f)) {
1911: if ($_=~/^A(\d+)/) {
1912: unless ($f{$_}=~/^\!/) { $total++; }
1913: }
1914: }
1915: my $now=0;
1916: my $since=time;
1917: $r->print(<<ENDPOP);
1918: <script>
1919: popwin=open('','popwin','width=400,height=100');
1920: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1921: '<h3>Spreadsheet Calculation Progress</h3>'+
1922: '<form name=popremain>'+
1923: '<input type=text size=35 name=remaining value=Starting></form>'+
1924: '</body></html>');
1925: popwin.document.close();
1926: </script>
1927: ENDPOP
1928: $r->rflush();
1929: foreach (keys(%f)) {
1930: if ($_=~/^A(\d+)/) {
1931: my $row=$1;
1932: unless (($f{$_}=~/^\!/) || ($row==0)) {
1933: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1934: 'studentcalc');
1935: undef %userrdatas;
1936: $now++;
1937: $r->print('<script>popwin.document.popremain.remaining.value="'.
1938: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1939: ' secs remaining";</script>');
1940: $r->rflush();
1941:
1942: my $index=0;
1943: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1944: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1945: if ($studentdata[$index]) {
1946: my $col=$_;
1947: if ($studentdata[$index]=~/\D/) {
1948: $c{$col.$row}="'".$studentdata[$index]."'";
1949: } else {
1950: $c{$col.$row}=$studentdata[$index];
1951: }
1952: unless ($col eq 'A') {
1953: $f{$col.$row}='import';
1954: }
1955: }
1956: $index++;
1957: }
1958: }
1959: }
1960: }
1961: &setformulas($safeeval,%f);
1962: &setconstants($safeeval,%c);
1963: $r->print('<script>popwin.close()</script>');
1964: $r->rflush();
1965: }
1966:
1967: # ------------------------------------------------ Load data for one assessment
1968:
1969: sub loadassessment {
1970: my $safeeval=shift;
1971:
1972: my $uhome=&getuhome($safeeval);
1973: my $uname=&getuname($safeeval);
1974: my $udom=&getudom($safeeval);
1975: my $symb=&getusymb($safeeval);
1976: my $cid=&getcid($safeeval);
1977: my $cnum=&getcnum($safeeval);
1978: my $cdom=&getcdom($safeeval);
1979: my $chome=&getchome($safeeval);
1980:
1981: my $namespace;
1982: unless ($namespace=$cid) { return ''; }
1983:
1984: # ----------------------------------------------------------- Get stored values
1985:
1986: my %returnhash=();
1987:
1988: if ($cachedassess eq $uname.':'.$udom) {
1989: #
1990: # get data out of the dumped stores
1991: #
1992:
1993: my $version=$cachedstores{'version:'.$symb};
1994: my $scope;
1995: for ($scope=1;$scope<=$version;$scope++) {
1996: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
1997: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1998: }
1999: }
2000:
2001: } else {
2002: #
2003: # restore individual
2004: #
2005:
2006: my $answer=&Apache::lonnet::reply(
2007: "restore:$udom:$uname:".
2008: &Apache::lonnet::escape($namespace).":".
2009: &Apache::lonnet::escape($symb),$uhome);
2010: foreach (split(/\&/,$answer)) {
2011: my ($name,$value)=split(/\=/,$_);
2012: $returnhash{&Apache::lonnet::unescape($name)}=
2013: &Apache::lonnet::unescape($value);
2014: }
2015: my $version;
2016: for ($version=1;$version<=$returnhash{'version'};$version++) {
2017: foreach (split(/\:/,$returnhash{$version.':keys'})) {
2018: $returnhash{$_}=$returnhash{$version.':'.$_};
2019: }
2020: }
2021: }
2022: # ----------------------------- returnhash now has all stores for this resource
2023:
2024: # --------- convert all "_" to "." to be able to use libraries, multiparts, etc
2025:
2026: my @oldkeys=keys %returnhash;
2027:
2028: foreach (@oldkeys) {
2029: my $name=$_;
2030: my $value=$returnhash{$_};
2031: delete $returnhash{$_};
2032: $name=~s/\_/\./g;
2033: $returnhash{$name}=$value;
2034: }
2035:
2036: # ---------------------------- initialize coursedata and userdata for this user
2037: undef %courseopt;
2038: undef %useropt;
2039:
2040: my $userprefix=$uname.'_'.$udom.'_';
2041:
2042: unless ($uhome eq 'no_host') {
2043: # -------------------------------------------------------------- Get coursedata
2044: unless
2045: ((time-$courserdatas{$cid.'.last_cache'})<240) {
2046: my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.
2047: ':resourcedata',$chome);
2048: if ($reply!~/^error\:/) {
2049: $courserdatas{$cid}=$reply;
2050: $courserdatas{$cid.'.last_cache'}=time;
2051: }
2052: }
2053: foreach (split(/\&/,$courserdatas{$cid})) {
2054: my ($name,$value)=split(/\=/,$_);
2055: $courseopt{$userprefix.&Apache::lonnet::unescape($name)}=
2056: &Apache::lonnet::unescape($value);
2057: }
2058: # --------------------------------------------------- Get userdata (if present)
2059: unless
2060: ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) {
2061: my $reply=
2062: &Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome);
2063: if ($reply!~/^error\:/) {
2064: $userrdatas{$uname.'___'.$udom}=$reply;
2065: $userrdatas{$uname.'___'.$udom.'.last_cache'}=time;
2066: }
2067: }
2068: foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) {
2069: my ($name,$value)=split(/\=/,$_);
2070: $useropt{$userprefix.&Apache::lonnet::unescape($name)}=
2071: &Apache::lonnet::unescape($value);
2072: }
2073: }
2074: # ----------------- now courseopt, useropt initialized for this user and course
2075: # (used by parmval)
2076:
2077: #
2078: # Load keys for this assessment only
2079: #
2080: my %thisassess=();
2081: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2082:
2083: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2084: $thisassess{$_}=1;
2085: }
2086: #
2087: # Load parameters
2088: #
2089: my %c=();
2090:
2091: if (tie(%parmhash,'GDBM_File',
2092: &getcfn($safeeval).'_parms.db',&GDBM_READER,0640)) {
2093: my %f=&getformulas($safeeval);
2094: foreach (keys(%f)) {
2095: if ($_=~/^A/) {
2096: unless ($f{$_}=~/^\!/) {
2097: if ($f{$_}=~/^parameter/) {
2098: if ($thisassess{$f{$_}}) {
2099: my $val=&parmval($f{$_},$safeeval);
2100: $c{$_}=$val;
2101: $c{$f{$_}}=$val;
2102: }
2103: } else {
2104: my $key=$f{$_};
2105: my $ckey=$key;
2106: $key=~s/^stores\_/resource\./;
2107: $key=~s/\_/\./g;
2108: $c{$_}=$returnhash{$key};
2109: $c{$ckey}=$returnhash{$key};
2110: }
2111: }
2112: }
2113: }
2114: untie(%parmhash);
2115: }
2116: &setconstants($safeeval,%c);
2117: }
2118:
2119: # --------------------------------------------------------- Various form fields
2120:
2121: sub textfield {
2122: my ($title,$name,$value)=@_;
2123: return "\n<p><b>$title:</b><br>".
2124: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2125: }
2126:
2127: sub hiddenfield {
2128: my ($name,$value)=@_;
2129: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2130: }
2131:
2132: sub selectbox {
2133: my ($title,$name,$value,%options)=@_;
2134: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2135: foreach (sort keys(%options)) {
2136: $selout.='<option value="'.$_.'"';
2137: if ($_ eq $value) { $selout.=' selected'; }
2138: $selout.='>'.$options{$_}.'</option>';
2139: }
2140: return $selout.'</select>';
2141: }
2142:
2143: # =============================================== Update information in a sheet
2144: #
2145: # Add new users or assessments, etc.
2146: #
2147:
2148: sub updatesheet {
2149: my $safeeval=shift;
2150: my $stype=&gettype($safeeval);
2151: if ($stype eq 'classcalc') {
2152: return &updateclasssheet($safeeval);
2153: } else {
2154: return &updatestudentassesssheet($safeeval);
2155: }
2156: }
2157:
2158: # =================================================== Load the rows for a sheet
2159: #
2160: # Import the data for rows
2161: #
2162:
2163: sub loadrows {
2164: my ($safeeval,$r)=@_;
2165: my $stype=&gettype($safeeval);
2166: if ($stype eq 'classcalc') {
2167: &loadcourse($safeeval,$r);
2168: } elsif ($stype eq 'studentcalc') {
2169: &loadstudent($safeeval);
2170: } else {
2171: &loadassessment($safeeval);
2172: }
2173: }
2174:
2175: # ======================================================= Forced recalculation?
2176:
2177: sub checkthis {
2178: my ($keyname,$time)=@_;
2179: return ($time<$expiredates{$keyname});
2180: }
2181: sub forcedrecalc {
2182: my ($uname,$udom,$stype,$usymb)=@_;
2183: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2184: my $time=$oldsheets{$key.'.time'};
2185: if ($ENV{'form.forcerecalc'}) { return 1; }
2186: unless ($time) { return 1; }
2187: if ($stype eq 'assesscalc') {
2188: my $map=(split(/\_\_\_/,$usymb))[0];
2189: if (&checkthis('::assesscalc:',$time) ||
2190: &checkthis('::assesscalc:'.$map,$time) ||
2191: &checkthis('::assesscalc:'.$usymb,$time) ||
2192: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2193: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2194: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2195: return 1;
2196: }
2197: } else {
2198: if (&checkthis('::studentcalc:',$time) ||
2199: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2200: return 1;
2201: }
2202: }
2203: return 0;
2204: }
2205:
2206: # ============================================================== Export handler
2207: #
2208: # Non-interactive call from with program
2209: #
2210:
2211: sub exportsheet {
2212: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2213: my @exportarr=();
2214:
2215: if (($usymb=~/^\_(\w+)/) && (!$fn)) {
2216: $fn='default_'.$1;
2217: }
2218:
2219: #
2220: # Check if cached
2221: #
2222:
2223: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2224: my $found='';
2225:
2226: if ($oldsheets{$key}) {
2227: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2228: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2229: if ($name eq $fn) {
2230: $found=$value;
2231: }
2232: }
2233: }
2234:
2235: unless ($found) {
2236: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2237: if ($oldsheets{$key}) {
2238: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2239: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2240: if ($name eq $fn) {
2241: $found=$value;
2242: }
2243: }
2244: }
2245: }
2246: #
2247: # Check if still valid
2248: #
2249: if ($found) {
2250: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2251: $found='';
2252: }
2253: }
2254:
2255: if ($found) {
2256: #
2257: # Return what was cached
2258: #
2259: @exportarr=split(/\_\_\_\;\_\_\_/,$found);
2260:
2261: } else {
2262: #
2263: # Not cached
2264: #
2265:
2266: my $thissheet=&makenewsheet($uname,$udom,$stype,$usymb);
2267: &readsheet($thissheet,$fn);
2268: &updatesheet($thissheet);
2269: &loadrows($thissheet);
2270: &calcsheet($thissheet);
2271: @exportarr=&exportdata($thissheet);
2272: #
2273: # Store now
2274: #
2275: my $cid=$ENV{'request.course.id'};
2276: my $current='';
2277: if ($stype eq 'studentcalc') {
2278: $current=&Apache::lonnet::reply('get:'.
2279: $ENV{'course.'.$cid.'.domain'}.':'.
2280: $ENV{'course.'.$cid.'.num'}.
2281: ':nohist_calculatedsheets:'.
2282: &Apache::lonnet::escape($key),
2283: $ENV{'course.'.$cid.'.home'});
2284: } else {
2285: $current=&Apache::lonnet::reply('get:'.
2286: &getudom($thissheet).':'.
2287: &getuname($thissheet).
2288: ':nohist_calculatedsheets_'.
2289: $ENV{'request.course.id'}.':'.
2290: &Apache::lonnet::escape($key),
2291: &getuhome($thissheet));
2292:
2293: }
2294: my %currentlystored=();
2295: unless ($current=~/^error\:/) {
2296: foreach (split(/\_\_\_\&\_\_\_/,&Apache::lonnet::unescape($current))) {
2297: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2298: $currentlystored{$name}=$value;
2299: }
2300: }
2301: $currentlystored{$fn}=join('___;___',@exportarr);
2302:
2303: my $newstore='';
2304: foreach (keys(%currentlystored)) {
2305: if ($newstore) { $newstore.='___&___'; }
2306: $newstore.=$_.'___=___'.$currentlystored{$_};
2307: }
2308: my $now=time;
2309: if ($stype eq 'studentcalc') {
2310: &Apache::lonnet::reply('put:'.
2311: $ENV{'course.'.$cid.'.domain'}.':'.
2312: $ENV{'course.'.$cid.'.num'}.
2313: ':nohist_calculatedsheets:'.
2314: &Apache::lonnet::escape($key).'='.
2315: &Apache::lonnet::escape($newstore).'&'.
2316: &Apache::lonnet::escape($key).'.time='.$now,
2317: $ENV{'course.'.$cid.'.home'});
2318: } else {
2319: &Apache::lonnet::reply('put:'.
2320: &getudom($thissheet).':'.
2321: &getuname($thissheet).
2322: ':nohist_calculatedsheets_'.
2323: $ENV{'request.course.id'}.':'.
2324: &Apache::lonnet::escape($key).'='.
2325: &Apache::lonnet::escape($newstore).'&'.
2326: &Apache::lonnet::escape($key).'.time='.$now,
2327: &getuhome($thissheet));
2328: }
2329: }
2330: return @exportarr;
2331: }
2332: # ============================================================ Expiration Dates
2333: #
2334: # Load previously cached student spreadsheets for this course
2335: #
2336:
2337: sub expirationdates {
2338: undef %expiredates;
2339: my $cid=$ENV{'request.course.id'};
2340: my $reply=&Apache::lonnet::reply('dump:'.
2341: $ENV{'course.'.$cid.'.domain'}.':'.
2342: $ENV{'course.'.$cid.'.num'}.
2343: ':nohist_expirationdates',
2344: $ENV{'course.'.$cid.'.home'});
2345: unless ($reply=~/^error\:/) {
2346: foreach (split(/\&/,$reply)) {
2347: my ($name,$value)=split(/\=/,$_);
2348: $expiredates{&Apache::lonnet::unescape($name)}
2349: =&Apache::lonnet::unescape($value);
2350: }
2351: }
2352: }
2353:
2354: # ===================================================== Calculated sheets cache
2355: #
2356: # Load previously cached student spreadsheets for this course
2357: #
2358:
2359: sub cachedcsheets {
2360: my $cid=$ENV{'request.course.id'};
2361: my $reply=&Apache::lonnet::reply('dump:'.
2362: $ENV{'course.'.$cid.'.domain'}.':'.
2363: $ENV{'course.'.$cid.'.num'}.
2364: ':nohist_calculatedsheets',
2365: $ENV{'course.'.$cid.'.home'});
2366: unless ($reply=~/^error\:/) {
2367: foreach ( split(/\&/,$reply)) {
2368: my ($name,$value)=split(/\=/,$_);
2369: $oldsheets{&Apache::lonnet::unescape($name)}
2370: =&Apache::lonnet::unescape($value);
2371: }
2372: }
2373: }
2374:
2375: # ===================================================== Calculated sheets cache
2376: #
2377: # Load previously cached assessment spreadsheets for this student
2378: #
2379:
2380: sub cachedssheets {
2381: my ($sname,$sdom,$shome)=@_;
2382: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2383: my $cid=$ENV{'request.course.id'};
2384: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2385: ':nohist_calculatedsheets_'.
2386: $ENV{'request.course.id'},
2387: $shome);
2388: unless ($reply=~/^error\:/) {
2389: foreach ( split(/\&/,$reply)) {
2390: my ($name,$value)=split(/\=/,$_);
2391: $oldsheets{&Apache::lonnet::unescape($name)}
2392: =&Apache::lonnet::unescape($value);
2393: }
2394: }
2395: $loadedcaches{$sname.'_'.$sdom}=1;
2396: }
2397: }
2398:
2399: # ===================================================== Calculated sheets cache
2400: #
2401: # Load previously cached assessment spreadsheets for this student
2402: #
2403:
2404: # ================================================================ Main handler
2405: #
2406: # Interactive call to screen
2407: #
2408: #
2409:
2410:
2411: sub handler {
2412: my $r=shift;
2413:
2414: if ($r->header_only) {
2415: $r->content_type('text/html');
2416: $r->send_http_header;
2417: return OK;
2418: }
2419:
2420: # ---------------------------------------------------- Global directory configs
2421:
2422: $includedir=$r->dir_config('lonIncludes');
2423: $tmpdir=$r->dir_config('lonDaemons').'/tmp/';
2424:
2425: # ----------------------------------------------------- Needs to be in a course
2426:
2427: if ($ENV{'request.course.fn'}) {
2428:
2429: # --------------------------- Get query string for limited number of parameters
2430:
2431: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2432: ['uname','udom','usymb','ufn']);
2433:
2434: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2435: $ENV{'form.ufn'}='default_'.$1;
2436: }
2437:
2438: # -------------------------------------- Interactive loading of specific sheet?
2439: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2440: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2441: }
2442: # ------------------------------------------- Nothing there? Must be login user
2443:
2444: my $aname;
2445: my $adom;
2446:
2447: unless ($ENV{'form.uname'}) {
2448: $aname=$ENV{'user.name'};
2449: $adom=$ENV{'user.domain'};
2450: } else {
2451: $aname=$ENV{'form.uname'};
2452: $adom=$ENV{'form.udom'};
2453: }
2454:
2455: # ------------------------------------------------------------------- Open page
2456:
2457: $r->content_type('text/html');
2458: $r->header_out('Cache-control','no-cache');
2459: $r->header_out('Pragma','no-cache');
2460: $r->send_http_header;
2461:
2462: # --------------------------------------------------------------- Screen output
2463:
2464: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2465: $r->print(<<ENDSCRIPT);
2466: <script language="JavaScript">
2467:
2468: function celledit(cn,cf) {
2469: var cnf=prompt(cn,cf);
2470: if (cnf!=null) {
2471: document.sheet.unewfield.value=cn;
2472: document.sheet.unewformula.value=cnf;
2473: document.sheet.submit();
2474: }
2475: }
2476:
2477: function changesheet(cn) {
2478: document.sheet.unewfield.value=cn;
2479: document.sheet.unewformula.value='changesheet';
2480: document.sheet.submit();
2481: }
2482:
2483: function insertrow(cn) {
2484: document.sheet.unewfield.value='insertrow';
2485: document.sheet.unewformula.value=cn;
2486: document.sheet.submit();
2487: }
2488:
2489: </script>
2490: ENDSCRIPT
2491: $r->print('</head><body bgcolor="#FFFFFF">'.
2492: '<img align=right src=/adm/lonIcons/lonlogos.gif>'.
2493: '<h1>LON-CAPA Spreadsheet</h1>'.
2494: '<form action="'.$r->uri.'" name=sheet method=post>'.
2495: &hiddenfield('uname',$ENV{'form.uname'}).
2496: &hiddenfield('udom',$ENV{'form.udom'}).
2497: &hiddenfield('usymb',$ENV{'form.usymb'}).
2498: &hiddenfield('unewfield','').
2499: &hiddenfield('unewformula',''));
2500:
2501: # ---------------------- Make sure that this gets out, even if user hits "stop"
2502:
2503: $r->rflush();
2504:
2505: # ---------------------------------------------------------------- Full recalc?
2506:
2507:
2508: if ($ENV{'form.forcerecalc'}) {
2509: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2510: undef %spreadsheets;
2511: undef %courserdatas;
2512: undef %userrdatas;
2513: undef %defaultsheets;
2514: undef %updatedata;
2515: }
2516:
2517: # ---------------------------------------- Read new sheet or modified worksheet
2518:
2519: $r->uri=~/\/(\w+)$/;
2520:
2521: my $asheet=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2522:
2523: # ------------------------ If a new formula had been entered, go from work copy
2524:
2525: if ($ENV{'form.unewfield'}) {
2526: $r->print('<h2>Modified Workcopy</h2>');
2527: $ENV{'form.unewformula'}=~s/\'/\"/g;
2528: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2529: $ENV{'form.unewformula'}.'<p>');
2530: &setfilename($asheet,$ENV{'form.ufn'});
2531: &tmpread($asheet,
2532: $ENV{'form.unewfield'},$ENV{'form.unewformula'});
2533:
2534: } elsif ($ENV{'form.saveas'}) {
2535: &setfilename($asheet,$ENV{'form.ufn'});
2536: &tmpread($asheet);
2537: } else {
2538: &readsheet($asheet,$ENV{'form.ufn'});
2539: }
2540:
2541: # -------------------------------------------------- Print out user information
2542:
2543: unless (&gettype($asheet) eq 'classcalc') {
2544: $r->print('<p><b>User:</b> '.&getuname($asheet).
2545: '<br><b>Domain:</b> '.&getudom($asheet));
2546: if (&getcsec($asheet) eq '-1') {
2547: $r->print('<h3><font color=red>'.
2548: 'Not a student in this course</font></h3>');
2549: } else {
2550: $r->print('<br><b>Section/Group:</b> '.&getcsec($asheet));
2551: }
2552: if ($ENV{'form.usymb'}) {
2553: $r->print('<br><b>Assessment:</b> <tt>'.$ENV{'form.usymb'}.'</tt>');
2554: }
2555: }
2556:
2557: # ---------------------------------------------------------------- Course title
2558:
2559: $r->print('<h1>'.
2560: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
2561: '</h1><h3>'.localtime().'</h3>');
2562:
2563: # ---------------------------------------------------- See if user can see this
2564:
2565: if ((&gettype($asheet) eq 'classcalc') ||
2566: (&getuname($asheet) ne $ENV{'user.name'}) ||
2567: (&getudom($asheet) ne $ENV{'user.domain'})) {
2568: unless (&Apache::lonnet::allowed('vgr',&getcid($asheet))) {
2569: $r->print(
2570: '<h1>Access Permission Denied</h1></form></body></html>');
2571: return OK;
2572: }
2573: }
2574:
2575: # ---------------------------------------------------------- Additional options
2576:
2577: $r->print(
2578: '<input type=submit name=forcerecalc value="Completely Recalculate Sheet"><p>'
2579: );
2580: if (&gettype($asheet) eq 'assesscalc') {
2581: $r->print ('<p><font size=+2><a href="/adm/studentcalc?uname='.
2582: &getuname($asheet).
2583: '&udom='.&getudom($asheet).
2584: '">Level up: Student Sheet</a></font><p>');
2585: }
2586:
2587: if ((&gettype($asheet) eq 'studentcalc') &&
2588: (&Apache::lonnet::allowed('vgr',&getcid($asheet)))) {
2589: $r->print (
2590: '<p><font size=+2><a href="/adm/classcalc">'.
2591: 'Level up: Course Sheet</a></font><p>');
2592: }
2593:
2594:
2595: # ----------------------------------------------------------------- Save dialog
2596:
2597:
2598: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2599: my $fname=$ENV{'form.ufn'};
2600: $fname=~s/\_[^\_]+$//;
2601: if ($fname eq 'default') { $fname='course_default'; }
2602: $r->print('<input type=submit name=saveas value="Save as ...">'.
2603: '<input type=text size=20 name=newfn value="'.$fname.
2604: '"> (make default: <input type=checkbox name="makedefufn">)<p>');
2605: }
2606:
2607: $r->print(&hiddenfield('ufn',&getfilename($asheet)));
2608:
2609: # ----------------------------------------------------------------- Load dialog
2610: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2611: $r->print('<p><input type=submit name=load value="Load ...">'.
2612: '<select name="loadthissheet">'.
2613: '<option name="default">Default</option>');
2614: foreach (&othersheets($asheet,&gettype($asheet))) {
2615: $r->print('<option name="'.$_.'"');
2616: if ($ENV{'form.ufn'} eq $_) {
2617: $r->print(' selected');
2618: }
2619: $r->print('>'.$_.'</option>');
2620: }
2621: $r->print('</select><p>');
2622: if (&gettype($asheet) eq 'studentcalc') {
2623: &setothersheets($asheet,&othersheets($asheet,'assesscalc'));
2624: }
2625: }
2626:
2627: # --------------------------------------------------------------- Cached sheets
2628:
2629: &expirationdates();
2630:
2631: undef %oldsheets;
2632: undef %loadedcaches;
2633:
2634: if (&gettype($asheet) eq 'classcalc') {
2635: $r->print("Loading previously calculated student sheets ...<br>\n");
2636: $r->rflush();
2637: &cachedcsheets();
2638: } elsif (&gettype($asheet) eq 'studentcalc') {
2639: $r->print("Loading previously calculated assessment sheets ...<br>\n");
2640: $r->rflush();
2641: &cachedssheets(&getuname($asheet),&getudom($asheet),
2642: &getuhome($asheet));
2643: }
2644:
2645: # ----------------------------------------------------- Update sheet, load rows
2646:
2647: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2648: $r->rflush();
2649:
2650: &updatesheet($asheet);
2651:
2652: $r->print("Updated rows, loading row data ...<br>\n");
2653: $r->rflush();
2654:
2655: &loadrows($asheet,$r);
2656:
2657: $r->print("Loaded row data, calculating sheet ...<br>\n");
2658: $r->rflush();
2659:
2660: my $calcoutput=&calcsheet($asheet);
2661: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2662:
2663: # ---------------------------------------------------- See if something to save
2664:
2665: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2666: my $fname='';
2667: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2668: $fname=~s/\W/\_/g;
2669: if ($fname eq 'default') { $fname='course_default'; }
2670: $fname.='_'.&gettype($asheet);
2671: &setfilename($asheet,$fname);
2672: $ENV{'form.ufn'}=$fname;
2673: $r->print('<p>Saving spreadsheet: '.
2674: &writesheet($asheet,$ENV{'form.makedefufn'}).'<p>');
2675: }
2676: }
2677:
2678: # ------------------------------------------------ Write the modified worksheet
2679:
2680: $r->print('<b>Current sheet:</b> '.&getfilename($asheet).'<p>');
2681:
2682: &tmpwrite($asheet);
2683:
2684: if (&gettype($asheet) eq 'studentcalc') {
2685: $r->print('<br>Show rows with empty A column: ');
2686: } else {
2687: $r->print('<br>Show empty rows: ');
2688: }
2689:
2690: $r->print(&hiddenfield('userselhidden','true').
2691: '<input type=checkbox name=showall onClick="submit()"');
2692:
2693: if ($ENV{'form.showall'}) {
2694: $r->print(' checked');
2695: } else {
2696: unless ($ENV{'form.userselhidden'}) {
2697: unless
2698: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2699: $r->print(' checked');
2700: $ENV{'form.showall'}=1;
2701: }
2702: }
2703: }
2704: $r->print('>');
2705:
2706: if (&gettype($asheet) eq 'classcalc') {
2707: $r->print(
2708: ' Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
2709: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
2710: $r->print('>');
2711: }
2712:
2713: # ------------------------------------------------------------------ Insertrows
2714:
2715: $r->print(<<ENDINSERTBUTTONS);
2716: <br>
2717: <input type='button' onClick='insertrow("top");'
2718: value='Insert Row Top'>
2719: <input type='button' onClick='insertrow("bottom");'
2720: value='Insert Row Bottom'><br>
2721: ENDINSERTBUTTONS
2722:
2723: # ------------------------------------------------------------- Print out sheet
2724:
2725: &outsheet($r,$asheet);
2726: $r->print('</form></body></html>');
2727:
2728: # ------------------------------------------------------------------------ Done
2729: } else {
2730: # ----------------------------- Not in a course, or not allowed to modify parms
2731: $ENV{'user.error.msg'}=
2732: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2733: return HTTP_NOT_ACCEPTABLE;
2734: }
2735: return OK;
2736:
2737: }
2738:
2739: 1;
2740: __END__
2741:
2742:
2743:
2744:
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