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lonspreadsheet.pm
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Wed Aug 21 17:18:08 2002 UTC (21 years, 10 months ago) by
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Starting to implement common header and color scheme for LON-CAPA handlers
(non-content pages).
Instead of <body bgcolor="#...."><h1>... call
&Apache::loncommon::bodytag(title,[role],[add_body_parms]);
title: what it says in the header
role (OPTIONAL): override role choice
('admin','coordinator','student','author')
add_body_parms: additional parameters to be put into the body tag, for
example 'onLoad="init();" or stuff
Colors and layout will likely change in the future, including domain
customization, help function calls, (css?)
1: #
2: # $Id: lonspreadsheet.pm,v 1.101 2002/08/21 17:18:08 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: use Apache::lonhtmlcommon;
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: my %numbertimes;
116:
117: # Stuff that only the screen handler can know
118:
119: my $includedir;
120: my $tmpdir;
121:
122: # =============================================================================
123: # ===================================== Implements an instance of a spreadsheet
124:
125: sub initsheet {
126: my $safeeval = new Safe(shift);
127: my $safehole = new Safe::Hole;
128: $safeeval->permit("entereval");
129: $safeeval->permit(":base_math");
130: $safeeval->permit("sort");
131: $safeeval->deny(":base_io");
132: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
133: $safeeval->share('$@');
134: my $code=<<'ENDDEFS';
135: # ---------------------------------------------------- Inside of the safe space
136:
137: #
138: # f: formulas
139: # t: intermediate format (variable references expanded)
140: # v: output values
141: # c: preloaded constants (A-column)
142: # rl: row label
143: # os: other spreadsheets (for student spreadsheet only)
144:
145: undef %v;
146: undef %t;
147: undef %f;
148: undef %c;
149: undef %rl;
150: undef @os;
151:
152: $maxrow=0;
153: $sheettype='';
154:
155: # filename/reference of the sheet
156:
157: $filename='';
158:
159: # user data
160: $uname='';
161: $uhome='';
162: $udom='';
163:
164: # course data
165:
166: $csec='';
167: $chome='';
168: $cnum='';
169: $cdom='';
170: $cid='';
171: $cfn='';
172:
173: # symb
174:
175: $usymb='';
176:
177: # error messages
178:
179: $errormsg='';
180:
181: sub mask {
182: my ($lower,$upper)=@_;
183:
184: $lower=~/([A-Za-z]|\*)(\d+|\*)/;
185: my $la=$1;
186: my $ld=$2;
187:
188: $upper=~/([A-Za-z]|\*)(\d+|\*)/;
189: my $ua=$1;
190: my $ud=$2;
191: my $alpha='';
192: my $num='';
193:
194: if (($la eq '*') || ($ua eq '*')) {
195: $alpha='[A-Za-z]';
196: } else {
197: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
198: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
199: $alpha='['.$la.'-'.$ua.']';
200: } else {
201: $alpha='['.$la.'-Za-'.$ua.']';
202: }
203: }
204:
205: if (($ld eq '*') || ($ud eq '*')) {
206: $num='\d+';
207: } else {
208: if (length($ld)!=length($ud)) {
209: $num.='(';
210: foreach ($ld=~m/\d/g) {
211: $num.='['.$_.'-9]';
212: }
213: if (length($ud)-length($ld)>1) {
214: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
215: }
216: $num.='|';
217: foreach ($ud=~m/\d/g) {
218: $num.='[0-'.$_.']';
219: }
220: $num.=')';
221: } else {
222: my @lda=($ld=~m/\d/g);
223: my @uda=($ud=~m/\d/g);
224: my $i; $j=0; $notdone=1;
225: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
226: if ($lda[$i]==$uda[$i]) {
227: $num.=$lda[$i];
228: $j=$i;
229: } else {
230: $notdone=0;
231: }
232: }
233: if ($j<$#lda-1) {
234: $num.='('.$lda[$j+1];
235: for ($i=$j+2;$i<=$#lda;$i++) {
236: $num.='['.$lda[$i].'-9]';
237: }
238: if ($uda[$j+1]-$lda[$j+1]>1) {
239: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
240: ($#lda-$j-1).'}';
241: }
242: $num.='|'.$uda[$j+1];
243: for ($i=$j+2;$i<=$#uda;$i++) {
244: $num.='[0-'.$uda[$i].']';
245: }
246: $num.=')';
247: } else {
248: if ($lda[$#lda]!=$uda[$#uda]) {
249: $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
250: }
251: }
252: }
253: }
254: return '^'.$alpha.$num."\$";
255: }
256:
257: #-------------------------------------------------------
258:
259: =item UWCALC(hashname,modules,units,date)
260:
261: returns the proportion of the module
262: weights not previously completed by the student.
263:
264: =over 4
265:
266: =item hashname
267:
268: name of the hash the module dates have been inserted into
269:
270: =item modules
271:
272: reference to a cell which contains a comma deliminated list of modules
273: covered by the assignment.
274:
275: =item units
276:
277: reference to a cell which contains a comma deliminated list of module
278: weights with respect to the assignment
279:
280: =item date
281:
282: reference to a cell which contains the date the assignment was completed.
283:
284: =back
285:
286: =cut
287:
288: #-------------------------------------------------------
289: sub UWCALC {
290: my ($hashname,$modules,$units,$date) = @_;
291: my @Modules = split(/,/,$modules);
292: my @Units = split(/,/,$units);
293: my $total_weight;
294: foreach (@Units) {
295: $total_weight += $_;
296: }
297: my $usum=0;
298: for (my $i=0; $i<=$#Modules; $i++) {
299: if (&HASH($hashname,$Modules[$i]) eq $date) {
300: $usum += $Units[$i];
301: }
302: }
303: return $usum/$total_weight;
304: }
305:
306: #-------------------------------------------------------
307:
308: =item CDLSUM(list)
309:
310: returns the sum of the elements in a cell which contains
311: a Comma Deliminate List of numerical values.
312: 'list' is a reference to a cell which contains a comma deliminated list.
313:
314: =cut
315:
316: #-------------------------------------------------------
317: sub CDLSUM {
318: my ($list)=@_;
319: my $sum;
320: foreach (split/,/,$list) {
321: $sum += $_;
322: }
323: return $sum;
324: }
325:
326: #-------------------------------------------------------
327:
328: =item CDLITEM(list,index)
329:
330: returns the item at 'index' in a Comma Deliminated List.
331:
332: =over 4
333:
334: =item list
335:
336: reference to a cell which contains a comma deliminated list.
337:
338: =item index
339:
340: the Perl index of the item requested (first element in list has
341: an index of 0)
342:
343: =back
344:
345: =cut
346:
347: #-------------------------------------------------------
348: sub CDLITEM {
349: my ($list,$index)=@_;
350: my @Temp = split/,/,$list;
351: return $Temp[$index];
352: }
353:
354: #-------------------------------------------------------
355:
356: =item CDLHASH(name,key,value)
357:
358: loads a comma deliminated list of keys into
359: the hash 'name', all with a value of 'value'.
360:
361: =over 4
362:
363: =item name
364:
365: name of the hash.
366:
367: =item key
368:
369: (a pointer to) a comma deliminated list of keys.
370:
371: =item value
372:
373: a single value to be entered for each key.
374:
375: =back
376:
377: =cut
378:
379: #-------------------------------------------------------
380: sub CDLHASH {
381: my ($name,$key,$value)=@_;
382: my @Keys;
383: my @Values;
384: # Check to see if we have multiple $key values
385: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
386: my $keymask = &mask($key);
387: # Assume the keys are addresses
388: my @Temp = grep /$keymask/,keys(%v);
389: @Keys = $v{@Temp};
390: } else {
391: $Keys[0]= $key;
392: }
393: my @Temp;
394: foreach $key (@Keys) {
395: @Temp = (@Temp, split/,/,$key);
396: }
397: @Keys = @Temp;
398: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
399: my $valmask = &mask($value);
400: my @Temp = grep /$valmask/,keys(%v);
401: @Values =$v{@Temp};
402: } else {
403: $Values[0]= $value;
404: }
405: $value = $Values[0];
406: # Add values to hash
407: for (my $i = 0; $i<=$#Keys; $i++) {
408: my $key = $Keys[$i];
409: if (! exists ($hashes{$name}->{$key})) {
410: $hashes{$name}->{$key}->[0]=$value;
411: } else {
412: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
413: $hashes{$name}->{$key} = \@Temp;
414: }
415: }
416: return "hash '$name' updated";
417: }
418:
419: #-------------------------------------------------------
420:
421: =item GETHASH(name,key,index)
422:
423: returns the element in hash 'name'
424: reference by the key 'key', at index 'index' in the values list.
425:
426: =cut
427:
428: #-------------------------------------------------------
429: sub GETHASH {
430: my ($name,$key,$index)=@_;
431: if (! defined($index)) {
432: $index = 0;
433: }
434: if ($key =~ /^[A-z]\d+$/) {
435: $key = $v{$key};
436: }
437: return $hashes{$name}->{$key}->[$index];
438: }
439:
440: #-------------------------------------------------------
441:
442: =item CLEARHASH(name)
443:
444: clears all the values from the hash 'name'
445:
446: =item CLEARHASH(name,key)
447:
448: clears all the values from the hash 'name' associated with the given key.
449:
450: =cut
451:
452: #-------------------------------------------------------
453: sub CLEARHASH {
454: my ($name,$key)=@_;
455: if (defined($key)) {
456: if (exists($hashes{$name}->{$key})) {
457: $hashes{$name}->{$key}=undef;
458: return "hash '$name' key '$key' cleared";
459: }
460: } else {
461: if (exists($hashes{$name})) {
462: $hashes{$name}=undef;
463: return "hash '$name' cleared";
464: }
465: }
466: return "Error in clearing hash";
467: }
468:
469: #-------------------------------------------------------
470:
471: =item HASH(name,key,value)
472:
473: loads values into an internal hash. If a key
474: already has a value associated with it, the values are sorted numerically.
475:
476: =item HASH(name,key)
477:
478: returns the 0th value in the hash 'name' associated with 'key'.
479:
480: =cut
481:
482: #-------------------------------------------------------
483: sub HASH {
484: my ($name,$key,$value)=@_;
485: my @Keys;
486: undef @Keys;
487: my @Values;
488: # Check to see if we have multiple $key values
489: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
490: my $keymask = &mask($key);
491: # Assume the keys are addresses
492: my @Temp = grep /$keymask/,keys(%v);
493: @Keys = $v{@Temp};
494: } else {
495: $Keys[0]= $key;
496: }
497: # If $value is empty, return the first value associated
498: # with the first key.
499: if (! $value) {
500: return $hashes{$name}->{$Keys[0]}->[0];
501: }
502: # Check to see if we have multiple $value(s)
503: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
504: my $valmask = &mask($value);
505: my @Temp = grep /$valmask/,keys(%v);
506: @Values =$v{@Temp};
507: } else {
508: $Values[0]= $value;
509: }
510: # Add values to hash
511: for (my $i = 0; $i<=$#Keys; $i++) {
512: my $key = $Keys[$i];
513: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
514: if (! exists ($hashes{$name}->{$key})) {
515: $hashes{$name}->{$key}->[0]=$value;
516: } else {
517: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
518: $hashes{$name}->{$key} = \@Temp;
519: }
520: }
521: return $Values[-1];
522: }
523:
524: #-------------------------------------------------------
525:
526: =item NUM(range)
527:
528: returns the number of items in the range.
529:
530: =cut
531:
532: #-------------------------------------------------------
533: sub NUM {
534: my $mask=mask(@_);
535: my $num= $#{@{grep(/$mask/,keys(%v))}}+1;
536: return $num;
537: }
538:
539: sub BIN {
540: my ($low,$high,$lower,$upper)=@_;
541: my $mask=mask($lower,$upper);
542: my $num=0;
543: foreach (grep /$mask/,keys(%v)) {
544: if (($v{$_}>=$low) && ($v{$_}<=$high)) {
545: $num++;
546: }
547: }
548: return $num;
549: }
550:
551:
552: #-------------------------------------------------------
553:
554: =item SUM(range)
555:
556: returns the sum of items in the range.
557:
558: =cut
559:
560: #-------------------------------------------------------
561: sub SUM {
562: my $mask=mask(@_);
563: my $sum=0;
564: foreach (grep /$mask/,keys(%v)) {
565: $sum+=$v{$_};
566: }
567: return $sum;
568: }
569:
570: #-------------------------------------------------------
571:
572: =item MEAN(range)
573:
574: compute the average of the items in the range.
575:
576: =cut
577:
578: #-------------------------------------------------------
579: sub MEAN {
580: my $mask=mask(@_);
581: my $sum=0; my $num=0;
582: foreach (grep /$mask/,keys(%v)) {
583: $sum+=$v{$_};
584: $num++;
585: }
586: if ($num) {
587: return $sum/$num;
588: } else {
589: return undef;
590: }
591: }
592:
593: #-------------------------------------------------------
594:
595: =item STDDEV(range)
596:
597: compute the standard deviation of the items in the range.
598:
599: =cut
600:
601: #-------------------------------------------------------
602: sub STDDEV {
603: my $mask=mask(@_);
604: my $sum=0; my $num=0;
605: foreach (grep /$mask/,keys(%v)) {
606: $sum+=$v{$_};
607: $num++;
608: }
609: unless ($num>1) { return undef; }
610: my $mean=$sum/$num;
611: $sum=0;
612: foreach (grep /$mask/,keys(%v)) {
613: $sum+=($v{$_}-$mean)**2;
614: }
615: return sqrt($sum/($num-1));
616: }
617:
618: #-------------------------------------------------------
619:
620: =item PROD(range)
621:
622: compute the product of the items in the range.
623:
624: =cut
625:
626: #-------------------------------------------------------
627: sub PROD {
628: my $mask=mask(@_);
629: my $prod=1;
630: foreach (grep /$mask/,keys(%v)) {
631: $prod*=$v{$_};
632: }
633: return $prod;
634: }
635:
636: #-------------------------------------------------------
637:
638: =item MAX(range)
639:
640: compute the maximum of the items in the range.
641:
642: =cut
643:
644: #-------------------------------------------------------
645: sub MAX {
646: my $mask=mask(@_);
647: my $max='-';
648: foreach (grep /$mask/,keys(%v)) {
649: unless ($max) { $max=$v{$_}; }
650: if (($v{$_}>$max) || ($max eq '-')) { $max=$v{$_}; }
651: }
652: return $max;
653: }
654:
655: #-------------------------------------------------------
656:
657: =item MIN(range)
658:
659: compute the minimum of the items in the range.
660:
661: =cut
662:
663: #-------------------------------------------------------
664: sub MIN {
665: my $mask=mask(@_);
666: my $min='-';
667: foreach (grep /$mask/,keys(%v)) {
668: unless ($max) { $max=$v{$_}; }
669: if (($v{$_}<$min) || ($min eq '-')) { $min=$v{$_}; }
670: }
671: return $min;
672: }
673:
674: #-------------------------------------------------------
675:
676: =item SUMMAX(num,lower,upper)
677:
678: compute the sum of the largest 'num' items in the range from
679: 'lower' to 'upper'
680:
681: =cut
682:
683: #-------------------------------------------------------
684: sub SUMMAX {
685: my ($num,$lower,$upper)=@_;
686: my $mask=mask($lower,$upper);
687: my @inside=();
688: foreach (grep /$mask/,keys(%v)) {
689: push (@inside,$v{$_});
690: }
691: @inside=sort(@inside);
692: my $sum=0; my $i;
693: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
694: $sum+=$inside[$i];
695: }
696: return $sum;
697: }
698:
699: #-------------------------------------------------------
700:
701: =item SUMMIN(num,lower,upper)
702:
703: compute the sum of the smallest 'num' items in the range from
704: 'lower' to 'upper'
705:
706: =cut
707:
708: #-------------------------------------------------------
709: sub SUMMIN {
710: my ($num,$lower,$upper)=@_;
711: my $mask=mask($lower,$upper);
712: my @inside=();
713: foreach (grep /$mask/,keys(%v)) {
714: $inside[$#inside+1]=$v{$_};
715: }
716: @inside=sort(@inside);
717: my $sum=0; my $i;
718: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
719: $sum+=$inside[$i];
720: }
721: return $sum;
722: }
723:
724: sub expandnamed {
725: my $expression=shift;
726: if ($expression=~/^\&/) {
727: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
728: my @vars=split(/\W+/,$formula);
729: my %values=();
730: undef %values;
731: foreach ( @vars ) {
732: my $varname=$_;
733: if ($varname=~/\D/) {
734: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
735: $varname=~s/$var/\(\\w\+\)/g;
736: foreach (keys(%c)) {
737: if ($_=~/$varname/) {
738: $values{$1}=1;
739: }
740: }
741: }
742: }
743: if ($func eq 'EXPANDSUM') {
744: my $result='';
745: foreach (keys(%values)) {
746: my $thissum=$formula;
747: $thissum=~s/$var/$_/g;
748: $result.=$thissum.'+';
749: }
750: $result=~s/\+$//;
751: return $result;
752: } else {
753: return 0;
754: }
755: } else {
756: # it is not a function, so it is a parameter name
757: # We should do the following:
758: # 1. Take the list of parameter names
759: # 2. look through the list for ones that match the parameter we want
760: # 3. If there are no collisions, return the one that matches
761: # 4. If there is a collision, return 'bad parameter name error'
762: my $returnvalue = '';
763: my @matches = ();
764: $#matches = -1;
765: study $expression;
766: foreach $parameter (keys(%c)) {
767: push @matches,$parameter if ($parameter =~ /$expression/);
768: }
769: if ($#matches == 0) {
770: $returnvalue = '$c{\''.$matches[0].'\'}';
771: } elsif ($#matches > 0) {
772: # more than one match. Look for a concise one
773: $returnvalue = "'non-unique parameter name : $expression'";
774: foreach (@matches) {
775: if (/^$expression$/) {
776: $returnvalue = '$c{\''.$_.'\'}';
777: }
778: }
779: } else {
780: $returnvalue = "'bad parameter name : $expression'";
781: }
782: return $returnvalue;
783: }
784: }
785:
786: sub sett {
787: %t=();
788: my $pattern='';
789: if ($sheettype eq 'assesscalc') {
790: $pattern='A';
791: } else {
792: $pattern='[A-Z]';
793: }
794:
795: # Deal with the template row
796: foreach (keys(%f)) {
797: if ($_=~/template\_(\w)/) {
798: my $col=$1;
799: unless ($col=~/^$pattern/) {
800: foreach (keys(%f)) {
801: if ($_=~/A(\d+)/) {
802: my $trow=$1;
803: if ($trow) {
804: # Get the name of this cell
805: my $lb=$col.$trow;
806: # Grab the template declaration
807: $t{$lb}=$f{'template_'.$col};
808: # Replace '#' with the row number
809: $t{$lb}=~s/\#/$trow/g;
810: # Replace '....' with ','
811: $t{$lb}=~s/\.\.+/\,/g;
812: # Replace 'A0' with the value from 'A0'
813: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
814: # Replace parameters
815: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
816: }
817: }
818: }
819: }
820: }
821: }
822:
823: # Deal with the normal cells
824: foreach (keys(%f)) {
825: if (($f{$_}) && ($_!~/template\_/)) {
826: my $matches=($_=~/^$pattern(\d+)/);
827: if (($matches) && ($1)) {
828: unless ($f{$_}=~/^\!/) {
829: $t{$_}=$c{$_};
830: }
831: } else {
832: $t{$_}=$f{$_};
833: $t{$_}=~s/\.\.+/\,/g;
834: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
835: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
836: }
837: }
838: }
839: # For inserted lines, [B-Z] is also valid
840:
841: unless ($sheettype eq 'assesscalc') {
842: foreach (keys(%f)) {
843: if ($_=~/[B-Z](\d+)/) {
844: if ($f{'A'.$1}=~/^[\~\-]/) {
845: $t{$_}=$f{$_};
846: $t{$_}=~s/\.\.+/\,/g;
847: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
848: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
849: }
850: }
851: }
852: }
853:
854: # For some reason 'A0' gets special treatment... This seems superfluous
855: # but I imagine it is here for a reason.
856: $t{'A0'}=$f{'A0'};
857: $t{'A0'}=~s/\.\.+/\,/g;
858: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$v\{\'$2\'\}/g;
859: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
860: }
861:
862: sub calc {
863: undef %v;
864: &sett();
865: my $notfinished=1;
866: my $lastcalc='';
867: my $depth=0;
868: while ($notfinished) {
869: $notfinished=0;
870: foreach (keys(%t)) {
871: my $old=$v{$_};
872: $v{$_}=eval $t{$_};
873: if ($@) {
874: undef %v;
875: return $_.': '.$@;
876: }
877: if ($v{$_} ne $old) { $notfinished=1; $lastcalc=$_; }
878: }
879: $depth++;
880: if ($depth>100) {
881: undef %v;
882: return $lastcalc.': Maximum calculation depth exceeded';
883: }
884: }
885: return '';
886: }
887:
888: sub templaterow {
889: my @cols=();
890: $cols[0]='<b><font size=+1>Template</font></b>';
891: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
892: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
893: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
894: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
895: my $fm=$f{'template_'.$_};
896: $fm=~s/[\'\"]/\&\#34;/g;
897: $cols[$#cols+1]="'template_$_','$fm'".'___eq___'.$fm;
898: }
899: return @cols;
900: }
901:
902: sub outrowassess {
903: my $n=shift;
904: my @cols=();
905: if ($n) {
906: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{'A'.$n});
907: if ($rl{$usy}) {
908: $cols[0]=$rl{$usy}.'<br>'.
909: '<select name="sel_'.$n.'" onChange="changesheet('.$n.
910: ')"><option name="default">Default</option>';
911: } else { $cols[0]=''; }
912: foreach (@os) {
913: $cols[0].='<option name="'.$_.'"';
914: if ($ufn eq $_) {
915: $cols[0].=' selected';
916: }
917: $cols[0].='>'.$_.'</option>';
918: }
919: $cols[0].='</select>';
920: } else {
921: $cols[0]='<b><font size=+1>Export</font></b>';
922: }
923: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
924: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
925: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
926: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
927: my $fm=$f{$_.$n};
928: $fm=~s/[\'\"]/\&\#34;/g;
929: push(@cols,"'$_$n','$fm'".'___eq___'.$v{$_.$n});
930: }
931: return @cols;
932: }
933:
934: sub outrow {
935: my $n=shift;
936: my @cols=();
937: if ($n) {
938: $cols[0]=$rl{$f{'A'.$n}};
939: } else {
940: $cols[0]='<b><font size=+1>Export</font></b>';
941: }
942: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
943: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
944: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
945: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
946: my $fm=$f{$_.$n};
947: $fm=~s/[\'\"]/\&\#34;/g;
948: $cols[$#cols+1]="'$_$n','$fm'".'___eq___'.$v{$_.$n};
949: }
950: return @cols;
951: }
952:
953: sub exportrowa {
954: my @exportarray=();
955: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
956: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
957: $exportarray[$#exportarray+1]=$v{$_.'0'};
958: }
959: return @exportarray;
960: }
961:
962: # ------------------------------------------- End of "Inside of the safe space"
963: ENDDEFS
964: $safeeval->reval($code);
965: return $safeeval;
966: }
967:
968: # ------------------------------------------------ Add or change formula values
969:
970: sub setformulas {
971: my ($safeeval,%f)=@_;
972: %{$safeeval->varglob('f')}=%f;
973: }
974:
975: # ------------------------------------------------ Add or change formula values
976:
977: sub setconstants {
978: my ($safeeval,%c)=@_;
979: %{$safeeval->varglob('c')}=%c;
980: }
981:
982: # --------------------------------------------- Set names of other spreadsheets
983:
984: sub setothersheets {
985: my ($safeeval,@os)=@_;
986: @{$safeeval->varglob('os')}=@os;
987: }
988:
989: # ------------------------------------------------ Add or change formula values
990:
991: sub setrowlabels {
992: my ($safeeval,%rl)=@_;
993: %{$safeeval->varglob('rl')}=%rl;
994: }
995:
996: # ------------------------------------------------------- Calculate spreadsheet
997:
998: sub calcsheet {
999: my $safeeval=shift;
1000: return $safeeval->reval('&calc();');
1001: }
1002:
1003: # ------------------------------------------------------------------ Get values
1004:
1005: sub getvalues {
1006: my $safeeval=shift;
1007: return $safeeval->reval('%v');
1008: }
1009:
1010: # ---------------------------------------------------------------- Get formulas
1011:
1012: sub getformulas {
1013: my $safeeval=shift;
1014: return %{$safeeval->varglob('f')};
1015: }
1016:
1017: # ----------------------------------------------------- Get value of $f{'A'.$n}
1018:
1019: sub getfa {
1020: my ($safeeval,$n)=@_;
1021: return $safeeval->reval('$f{"A'.$n.'"}');
1022: }
1023:
1024: # -------------------------------------------------------------------- Get type
1025:
1026: sub gettype {
1027: my $safeeval=shift;
1028: return $safeeval->reval('$sheettype');
1029: }
1030:
1031: # ------------------------------------------------------------------ Set maxrow
1032:
1033: sub setmaxrow {
1034: my ($safeeval,$row)=@_;
1035: $safeeval->reval('$maxrow='.$row.';');
1036: }
1037:
1038: # ------------------------------------------------------------------ Get maxrow
1039:
1040: sub getmaxrow {
1041: my $safeeval=shift;
1042: return $safeeval->reval('$maxrow');
1043: }
1044:
1045: # ---------------------------------------------------------------- Set filename
1046:
1047: sub setfilename {
1048: my ($safeeval,$fn)=@_;
1049: $safeeval->reval('$filename="'.$fn.'";');
1050: }
1051:
1052: # ---------------------------------------------------------------- Get filename
1053:
1054: sub getfilename {
1055: my $safeeval=shift;
1056: return $safeeval->reval('$filename');
1057: }
1058:
1059: # --------------------------------------------------------------- Get course ID
1060:
1061: sub getcid {
1062: my $safeeval=shift;
1063: return $safeeval->reval('$cid');
1064: }
1065:
1066: # --------------------------------------------------------- Get course filename
1067:
1068: sub getcfn {
1069: my $safeeval=shift;
1070: return $safeeval->reval('$cfn');
1071: }
1072:
1073: # ----------------------------------------------------------- Get course number
1074:
1075: sub getcnum {
1076: my $safeeval=shift;
1077: return $safeeval->reval('$cnum');
1078: }
1079:
1080: # ------------------------------------------------------------- Get course home
1081:
1082: sub getchome {
1083: my $safeeval=shift;
1084: return $safeeval->reval('$chome');
1085: }
1086:
1087: # ----------------------------------------------------------- Get course domain
1088:
1089: sub getcdom {
1090: my $safeeval=shift;
1091: return $safeeval->reval('$cdom');
1092: }
1093:
1094: # ---------------------------------------------------------- Get course section
1095:
1096: sub getcsec {
1097: my $safeeval=shift;
1098: return $safeeval->reval('$csec');
1099: }
1100:
1101: # --------------------------------------------------------------- Get user name
1102:
1103: sub getuname {
1104: my $safeeval=shift;
1105: return $safeeval->reval('$uname');
1106: }
1107:
1108: # ------------------------------------------------------------- Get user domain
1109:
1110: sub getudom {
1111: my $safeeval=shift;
1112: return $safeeval->reval('$udom');
1113: }
1114:
1115: # --------------------------------------------------------------- Get user home
1116:
1117: sub getuhome {
1118: my $safeeval=shift;
1119: return $safeeval->reval('$uhome');
1120: }
1121:
1122: # -------------------------------------------------------------------- Get symb
1123:
1124: sub getusymb {
1125: my $safeeval=shift;
1126: return $safeeval->reval('$usymb');
1127: }
1128:
1129: # ------------------------------------------------------------- Export of A-row
1130:
1131: sub exportdata {
1132: my $safeeval=shift;
1133: return $safeeval->reval('&exportrowa()');
1134: }
1135:
1136:
1137: # ========================================================== End of Spreadsheet
1138: # =============================================================================
1139:
1140: #
1141: # Procedures for screen output
1142: #
1143: # --------------------------------------------- Produce output row n from sheet
1144:
1145: sub rown {
1146: my ($safeeval,$n)=@_;
1147: my $defaultbg;
1148: my $rowdata='';
1149: my $dataflag=0;
1150: unless ($n eq '-') {
1151: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1152: } else {
1153: $defaultbg='#E0FF';
1154: }
1155: unless ($ENV{'form.showcsv'}) {
1156: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1157: } else {
1158: $rowdata.="\n".'"'.$n.'"';
1159: }
1160: my $showf=0;
1161: my $proc;
1162: my $maxred=1;
1163: my $sheettype=&gettype($safeeval);
1164: if ($sheettype eq 'studentcalc') {
1165: $proc='&outrowassess';
1166: $maxred=26;
1167: } else {
1168: $proc='&outrow';
1169: }
1170: if ($sheettype eq 'assesscalc') {
1171: $maxred=1;
1172: } else {
1173: $maxred=26;
1174: }
1175: if (&getfa($safeeval,$n)=~/^[\~\-]/) { $maxred=1; }
1176: if ($n eq '-') { $proc='&templaterow'; $n=-1; $dataflag=1; }
1177: foreach ($safeeval->reval($proc.'('.$n.')')) {
1178: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1179: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1180: if ((($vl ne '') || ($vl eq '0')) &&
1181: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1182: if ($showf==0) { $vl=$_; }
1183: unless ($ENV{'form.showcsv'}) {
1184: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1185: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1186: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1187: if ($vl eq '') {
1188: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1189: }
1190: $rowdata.=
1191: '<td bgcolor='.$bgcolor.'><a href="javascript:celledit('.$fm.');">'.$vl.
1192: '</a></td>';
1193: } else {
1194: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1195: }
1196: } else {
1197: $rowdata.=',"'.$vl.'"';
1198: }
1199: $showf++;
1200: } # End of foreach($safeval...)
1201: if ($ENV{'form.showall'} || ($dataflag)) {
1202: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1203: } else {
1204: return '';
1205: }
1206: }
1207:
1208: # ------------------------------------------------------------- Print out sheet
1209:
1210: sub outsheet {
1211: my ($r,$safeeval)=@_;
1212: my $maxred;
1213: my $realm;
1214: if (&gettype($safeeval) eq 'assesscalc') {
1215: $maxred=1;
1216: $realm='Assessment';
1217: } elsif (&gettype($safeeval) eq 'studentcalc') {
1218: $maxred=26;
1219: $realm='User';
1220: } else {
1221: $maxred=26;
1222: $realm='Course';
1223: }
1224: my $maxyellow=52-$maxred;
1225: my $tabledata;
1226: unless ($ENV{'form.showcsv'}) {
1227: $tabledata=
1228: '<table border=2><tr><th colspan=2 rowspan=2><font size=+2>'.
1229: $realm.'</font></th>'.
1230: '<td bgcolor=#FFDDDD colspan='.$maxred.
1231: '><b><font size=+1>Import</font></b></td>'.
1232: '<td colspan='.$maxyellow.
1233: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1234: my $showf=0;
1235: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1236: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1237: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1238: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1239: $showf++;
1240: if ($showf<=$maxred) {
1241: $tabledata.='<td bgcolor="#FFDDDD">';
1242: } else {
1243: $tabledata.='<td>';
1244: }
1245: $tabledata.="<b><font size=+1>$_</font></b></td>";
1246: }
1247: $tabledata.='</tr>'.&rown($safeeval,'-').&rown($safeeval,0);
1248: } else { $tabledata='<pre>'; }
1249:
1250: $r->print($tabledata);
1251:
1252: my $row;
1253: my $maxrow=&getmaxrow($safeeval);
1254:
1255: my @sortby=();
1256: my @sortidx=();
1257: for ($row=1;$row<=$maxrow;$row++) {
1258: $sortby[$row-1]=$safeeval->reval('$f{"A'.$row.'"}');
1259: $sortidx[$row-1]=$row-1;
1260: }
1261: @sortidx=sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
1262:
1263: my $what='Student';
1264: if (&gettype($safeeval) eq 'assesscalc') {
1265: $what='Item';
1266: } elsif (&gettype($safeeval) eq 'studentcalc') {
1267: $what='Assessment';
1268: }
1269:
1270: my $n=0;
1271: for ($row=0;$row<$maxrow;$row++) {
1272: my $thisrow=&rown($safeeval,$sortidx[$row]+1);
1273: if ($thisrow) {
1274: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1275: $r->print("</table>\n<br>\n");
1276: $r->rflush();
1277: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1278: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1279: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1280: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1281: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1282: $r->print('<td>'.$_.'</td>');
1283: }
1284: $r->print('</tr>');
1285: }
1286: $n++;
1287: $r->print($thisrow);
1288: }
1289: }
1290: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1291: }
1292:
1293: #
1294: # ----------------------------------------------- Read list of available sheets
1295: #
1296: sub othersheets {
1297: my ($safeeval,$stype)=@_;
1298: #
1299: my $cnum=&getcnum($safeeval);
1300: my $cdom=&getcdom($safeeval);
1301: my $chome=&getchome($safeeval);
1302: #
1303: my @alternatives=();
1304: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1305: my ($tmp) = keys(%results);
1306: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1307: @alternatives = sort (keys(%results));
1308: }
1309: return @alternatives;
1310: }
1311:
1312:
1313: #
1314: # -------------------------------------- Parse a spreadsheet
1315: #
1316: sub parse_sheet {
1317: # $sheetxml is a scalar reference or a scalar
1318: my ($sheetxml) = @_;
1319: if (! ref($sheetxml)) {
1320: my $tmp = $sheetxml;
1321: $sheetxml = \$tmp;
1322: }
1323: my %f;
1324: my $parser=HTML::TokeParser->new($sheetxml);
1325: my $token;
1326: while ($token=$parser->get_token) {
1327: if ($token->[0] eq 'S') {
1328: if ($token->[1] eq 'field') {
1329: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1330: $parser->get_text('/field');
1331: }
1332: if ($token->[1] eq 'template') {
1333: $f{'template_'.$token->[2]->{'col'}}=
1334: $parser->get_text('/template');
1335: }
1336: }
1337: }
1338: return \%f;
1339: }
1340:
1341: #
1342: # -------------------------------------- Read spreadsheet formulas for a course
1343: #
1344:
1345: sub readsheet {
1346: my ($safeeval,$fn)=@_;
1347: my $stype=&gettype($safeeval);
1348: my $cnum=&getcnum($safeeval);
1349: my $cdom=&getcdom($safeeval);
1350: my $chome=&getchome($safeeval);
1351:
1352: if (! defined($fn)) {
1353: # There is no filename. Look for defaults in course and global, cache
1354: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1355: my %tmphash = &Apache::lonnet::get('environment',
1356: ['spreadsheet_default_'.$stype],
1357: $cdom,$cnum);
1358: my ($tmp) = keys(%tmphash);
1359: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1360: $fn = 'default_'.$stype;
1361: } else {
1362: $fn = $tmphash{'spreadsheet_default_'.$stype};
1363: }
1364: unless (($fn) && ($fn!~/^error\:/)) {
1365: $fn='default_'.$stype;
1366: }
1367: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1368: }
1369: }
1370:
1371: # ---------------------------------------------------------- fn now has a value
1372:
1373: &setfilename($safeeval,$fn);
1374:
1375: # ------------------------------------------------------ see if sheet is cached
1376: my $fstring='';
1377: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1378: &setformulas($safeeval,split(/\_\_\_\;\_\_\_/,$fstring));
1379: } else {
1380:
1381: # ---------------------------------------------------- Not cached, need to read
1382:
1383: my %f=();
1384:
1385: if ($fn=~/^default\_/) {
1386: my $sheetxml='';
1387: my $fh;
1388: my $dfn=$fn;
1389: $dfn=~s/\_/\./g;
1390: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1391: $sheetxml=join('',<$fh>);
1392: } else {
1393: $sheetxml='<field row="0" col="A">"Error"</field>';
1394: }
1395: %f=%{&parse_sheet(\$sheetxml)};
1396: } elsif($fn=~/\/*\.spreadsheet$/) {
1397: my $sheetxml=&Apache::lonnet::getfile
1398: (&Apache::lonnet::filelocation('',$fn));
1399: if ($sheetxml == -1) {
1400: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1401: .$fn.'"</field>';
1402: }
1403: %f=%{&parse_sheet(\$sheetxml)};
1404: } else {
1405: my $sheet='';
1406: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1407: my ($tmp) = keys(%tmphash);
1408: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1409: foreach (keys(%tmphash)) {
1410: $f{$_}=$tmphash{$_};
1411: }
1412: }
1413: }
1414: # --------------------------------------------------------------- Cache and set
1415: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1416: &setformulas($safeeval,%f);
1417: }
1418: }
1419:
1420: # -------------------------------------------------------- Make new spreadsheet
1421:
1422: sub makenewsheet {
1423: my ($uname,$udom,$stype,$usymb)=@_;
1424: my $safeeval=initsheet($stype);
1425: $safeeval->reval(
1426: '$uname="'.$uname.
1427: '";$udom="'.$udom.
1428: '";$uhome="'.&Apache::lonnet::homeserver($uname,$udom).
1429: '";$sheettype="'.$stype.
1430: '";$usymb="'.$usymb.
1431: '";$csec="'.&Apache::lonnet::usection($udom,$uname,
1432: $ENV{'request.course.id'}).
1433: '";$cid="'.$ENV{'request.course.id'}.
1434: '";$cfn="'.$ENV{'request.course.fn'}.
1435: '";$cnum="'.$ENV{'course.'.$ENV{'request.course.id'}.'.num'}.
1436: '";$cdom="'.$ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.
1437: '";$chome="'.$ENV{'course.'.$ENV{'request.course.id'}.'.home'}.'";');
1438: return $safeeval;
1439: }
1440:
1441: # ------------------------------------------------------------ Save spreadsheet
1442:
1443: sub writesheet {
1444: my ($safeeval,$makedef)=@_;
1445: my $cid=&getcid($safeeval);
1446: if (&Apache::lonnet::allowed('opa',$cid)) {
1447: my %f=&getformulas($safeeval);
1448: my $stype=&gettype($safeeval);
1449: my $cnum=&getcnum($safeeval);
1450: my $cdom=&getcdom($safeeval);
1451: my $chome=&getchome($safeeval);
1452: my $fn=&getfilename($safeeval);
1453:
1454: # ------------------------------------------------------------- Cache new sheet
1455: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1456: # ----------------------------------------------------------------- Write sheet
1457: my $sheetdata='';
1458: foreach (keys(%f)) {
1459: unless ($f{$_} eq 'import') {
1460: $sheetdata.=&Apache::lonnet::escape($_).'='.
1461: &Apache::lonnet::escape($f{$_}).'&';
1462: }
1463: }
1464: $sheetdata=~s/\&$//;
1465: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1466: $sheetdata,$chome);
1467: if ($reply eq 'ok') {
1468: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1469: $stype.'_spreadsheets:'.
1470: &Apache::lonnet::escape($fn).'='.$ENV{'user.name'}.'@'.
1471: $ENV{'user.domain'},
1472: $chome);
1473: if ($reply eq 'ok') {
1474: if ($makedef) {
1475: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1476: ':environment:spreadsheet_default_'.$stype.'='.
1477: &Apache::lonnet::escape($fn),
1478: $chome);
1479: } else {
1480: return $reply;
1481: }
1482: } else {
1483: return $reply;
1484: }
1485: } else {
1486: return $reply;
1487: }
1488: }
1489: return 'unauthorized';
1490: }
1491:
1492: # ----------------------------------------------- Make a temp copy of the sheet
1493: # "Modified workcopy" - interactive only
1494: #
1495:
1496: sub tmpwrite {
1497: my $safeeval=shift;
1498: my $fn=$ENV{'user.name'}.'_'.
1499: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1500: &getfilename($safeeval);
1501: $fn=~s/\W/\_/g;
1502: $fn=$tmpdir.$fn.'.tmp';
1503: my $fh;
1504: if ($fh=Apache::File->new('>'.$fn)) {
1505: print $fh join("\n",&getformulas($safeeval));
1506: }
1507: }
1508:
1509: # ---------------------------------------------------------- Read the temp copy
1510:
1511: sub tmpread {
1512: my ($safeeval,$nfield,$nform)=@_;
1513: my $fn=$ENV{'user.name'}.'_'.
1514: $ENV{'user.domain'}.'_spreadsheet_'.&getusymb($safeeval).'_'.
1515: &getfilename($safeeval);
1516: $fn=~s/\W/\_/g;
1517: $fn=$tmpdir.$fn.'.tmp';
1518: my $fh;
1519: my %fo=();
1520: my $countrows=0;
1521: if ($fh=Apache::File->new($fn)) {
1522: my $name;
1523: while ($name=<$fh>) {
1524: chomp($name);
1525: my $value=<$fh>;
1526: chomp($value);
1527: $fo{$name}=$value;
1528: if ($name=~/^A(\d+)$/) {
1529: if ($1>$countrows) {
1530: $countrows=$1;
1531: }
1532: }
1533: }
1534: }
1535: if ($nform eq 'changesheet') {
1536: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1537: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1538: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1539: }
1540: } elsif ($nfield eq 'insertrow') {
1541: $countrows++;
1542: my $newrow=substr('000000'.$countrows,-7);
1543: if ($nform eq 'top') {
1544: $fo{'A'.$countrows}='--- '.$newrow;
1545: } else {
1546: $fo{'A'.$countrows}='~~~ '.$newrow;
1547: }
1548: } else {
1549: if ($nfield) { $fo{$nfield}=$nform; }
1550: }
1551: &setformulas($safeeval,%fo);
1552: }
1553:
1554: # ================================================================== Parameters
1555: # -------------------------------------------- Figure out a cascading parameter
1556: #
1557: # For this function to work
1558: #
1559: # * parmhash needs to be tied
1560: # * courseopt and useropt need to be initialized for this user and course
1561: #
1562:
1563: sub parmval {
1564: my ($what,$safeeval)=@_;
1565: my $cid=&getcid($safeeval);
1566: my $csec=&getcsec($safeeval);
1567: my $uname=&getuname($safeeval);
1568: my $udom=&getudom($safeeval);
1569: my $symb=&getusymb($safeeval);
1570:
1571: unless ($symb) { return ''; }
1572: my $result='';
1573:
1574: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1575: # ----------------------------------------------------- Cascading lookup scheme
1576: my $rwhat=$what;
1577: $what=~s/^parameter\_//;
1578: $what=~s/\_([^\_]+)$/\.$1/;
1579:
1580: my $symbparm=$symb.'.'.$what;
1581: my $mapparm=$mapname.'___(all).'.$what;
1582: my $usercourseprefix=$uname.'_'.$udom.'_'.$cid;
1583:
1584: my $seclevel=
1585: $usercourseprefix.'.['.
1586: $csec.'].'.$what;
1587: my $seclevelr=
1588: $usercourseprefix.'.['.
1589: $csec.'].'.$symbparm;
1590: my $seclevelm=
1591: $usercourseprefix.'.['.
1592: $csec.'].'.$mapparm;
1593:
1594: my $courselevel=
1595: $usercourseprefix.'.'.$what;
1596: my $courselevelr=
1597: $usercourseprefix.'.'.$symbparm;
1598: my $courselevelm=
1599: $usercourseprefix.'.'.$mapparm;
1600:
1601: # ---------------------------------------------------------- fourth, check user
1602:
1603: if ($uname) {
1604:
1605: if ($useropt{$courselevelr}) { return $useropt{$courselevelr}; }
1606:
1607: if ($useropt{$courselevelm}) { return $useropt{$courselevelm}; }
1608:
1609: if ($useropt{$courselevel}) { return $useropt{$courselevel}; }
1610:
1611: }
1612:
1613: # --------------------------------------------------------- third, check course
1614:
1615: if ($csec) {
1616:
1617: if ($courseopt{$seclevelr}) { return $courseopt{$seclevelr}; }
1618:
1619: if ($courseopt{$seclevelm}) { return $courseopt{$seclevelm}; }
1620:
1621: if ($courseopt{$seclevel}) { return $courseopt{$seclevel}; }
1622:
1623: }
1624:
1625: if ($courseopt{$courselevelr}) { return $courseopt{$courselevelr}; }
1626:
1627: if ($courseopt{$courselevelm}) { return $courseopt{$courselevelm}; }
1628:
1629: if ($courseopt{$courselevel}) { return $courseopt{$courselevel}; }
1630:
1631: # ----------------------------------------------------- second, check map parms
1632:
1633: my $thisparm=$parmhash{$symbparm};
1634: if ($thisparm) { return $thisparm; }
1635:
1636: # -------------------------------------------------------- first, check default
1637:
1638: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1639:
1640: }
1641:
1642: # ---------------------------------------------- Update rows for course listing
1643:
1644: sub updateclasssheet {
1645: my $safeeval=shift;
1646: my $cnum=&getcnum($safeeval);
1647: my $cdom=&getcdom($safeeval);
1648: my $cid=&getcid($safeeval);
1649: my $chome=&getchome($safeeval);
1650:
1651: # ---------------------------------------------- Read class list and row labels
1652:
1653: my $classlst=&Apache::lonnet::reply
1654: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1655: my %currentlist=();
1656: my $now=time;
1657: unless ($classlst=~/^error\:/) {
1658: foreach (split(/\&/,$classlst)) {
1659: my ($name,$value)=split(/\=/,$_);
1660: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1661: my $active=1;
1662: if (($end) && ($now>$end)) { $active=0; }
1663: $active = 1 if ($ENV{'form.Status'} eq 'Any');
1664: $active = !$active if ($ENV{'form.Status'} eq 'Expired');
1665: if ($active) {
1666: my $rowlabel='';
1667: $name=&Apache::lonnet::unescape($name);
1668: my ($sname,$sdom)=split(/\:/,$name);
1669: my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
1670: if ($ssec==-1) {
1671: unless ($ENV{'form.showcsv'}) {
1672: $rowlabel='<font color=red>Data not available: '.$name.
1673: '</font>';
1674: } else {
1675: $rowlabel='ERROR","'.$name.
1676: '","Data not available","","","';
1677: }
1678: } else {
1679: my %reply=&Apache::lonnet::idrget($sdom,$sname);
1680: my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1681: ':environment:firstname&middlename&lastname&generation',
1682: &Apache::lonnet::homeserver($sname,$sdom));
1683: unless ($ENV{'form.showcsv'}) {
1684: $rowlabel='<a href="/adm/studentcalc?uname='.$sname.
1685: '&udom='.$sdom.'">'.
1686: $ssec.' '.$reply{$sname}.'<br>';
1687: foreach ( split(/\&/,$reply)) {
1688: $rowlabel.=&Apache::lonnet::unescape($_).' ';
1689: }
1690: $rowlabel.='</a>';
1691: } else {
1692: $rowlabel=$ssec.'","'.$reply{$sname}.'"';
1693: my $ncount=0;
1694: foreach (split(/\&/,$reply)) {
1695: $rowlabel.=',"'.&Apache::lonnet::unescape($_).'"';
1696: $ncount++;
1697: }
1698: unless ($ncount==4) { $rowlabel.=',""'; }
1699: $rowlabel=~s/\"$//;
1700: }
1701: }
1702: $currentlist{&Apache::lonnet::unescape($name)}=$rowlabel;
1703: }
1704: } # end of foreach (split(/\&/,$classlst))
1705: #
1706: # -------------------- Find discrepancies between the course row table and this
1707: #
1708: my %f=&getformulas($safeeval);
1709: my $changed=0;
1710:
1711: my $maxrow=0;
1712: my %existing=();
1713:
1714: # ----------------------------------------------------------- Now obsolete rows
1715: foreach (keys(%f)) {
1716: if ($_=~/^A(\d+)/) {
1717: $maxrow=($1>$maxrow)?$1:$maxrow;
1718: $existing{$f{$_}}=1;
1719: unless ((defined($currentlist{$f{$_}})) || (!$1) ||
1720: ($f{$_}=~/^(\~\~\~|\-\-\-)/)) {
1721: $f{$_}='!!! Obsolete';
1722: $changed=1;
1723: }
1724: }
1725: }
1726:
1727: # -------------------------------------------------------- New and unknown keys
1728:
1729: foreach (sort keys(%currentlist)) {
1730: unless ($existing{$_}) {
1731: $changed=1;
1732: $maxrow++;
1733: $f{'A'.$maxrow}=$_;
1734: }
1735: }
1736:
1737: if ($changed) { &setformulas($safeeval,%f); }
1738:
1739: &setmaxrow($safeeval,$maxrow);
1740: &setrowlabels($safeeval,%currentlist);
1741:
1742: } else {
1743: return 'Could not access course data';
1744: }
1745: }
1746:
1747: # ----------------------------------- Update rows for student and assess sheets
1748:
1749: sub updatestudentassesssheet {
1750: my $safeeval=shift;
1751: my %bighash;
1752: my $stype=&gettype($safeeval);
1753: my %current=();
1754: unless ($updatedata{$ENV{'request.course.fn'}.'_'.$stype}) {
1755: # -------------------------------------------------------------------- Tie hash
1756: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1757: &GDBM_READER(),0640)) {
1758: # --------------------------------------------------------- Get all assessments
1759:
1760: my %allkeys=('timestamp' =>
1761: 'Timestamp of Last Transaction<br>timestamp',
1762: 'subnumber' =>
1763: 'Number of Submissions<br>subnumber',
1764: 'tutornumber' =>
1765: 'Number of Tutor Responses<br>tutornumber',
1766: 'totalpoints' =>
1767: 'Total Points Granted<br>totalpoints');
1768:
1769: my $adduserstr='';
1770: if ((&getuname($safeeval) ne $ENV{'user.name'}) ||
1771: (&getudom($safeeval) ne $ENV{'user.domain'})) {
1772: $adduserstr='&uname='.&getuname($safeeval).
1773: '&udom='.&getudom($safeeval);
1774: }
1775:
1776: my %allassess=('_feedback' =>
1777: '<a href="/adm/assesscalc?usymb=_feedback'.$adduserstr.
1778: '">Feedback</a>',
1779: '_evaluation' =>
1780: '<a href="/adm/assesscalc?usymb=_evaluation'.$adduserstr.
1781: '">Evaluation</a>',
1782: '_tutoring' =>
1783: '<a href="/adm/assesscalc?usymb=_tutoring'.$adduserstr.
1784: '">Tutoring</a>',
1785: '_discussion' =>
1786: '<a href="/adm/assesscalc?usymb=_discussion'.$adduserstr.
1787: '">Discussion</a>'
1788: );
1789:
1790: foreach (keys(%bighash)) {
1791: if ($_=~/^src\_(\d+)\.(\d+)$/) {
1792: my $mapid=$1;
1793: my $resid=$2;
1794: my $id=$mapid.'.'.$resid;
1795: my $srcf=$bighash{$_};
1796: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1797: my $symb=
1798: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1799: '___'.$resid.'___'.
1800: &Apache::lonnet::declutter($srcf);
1801: $allassess{$symb}=
1802: '<a href="/adm/assesscalc?usymb='.$symb.$adduserstr.'">'.
1803: $bighash{'title_'.$id}.'</a>';
1804: if ($stype eq 'assesscalc') {
1805: foreach (split(/\,/,
1806: &Apache::lonnet::metadata($srcf,'keys'))) {
1807: if (($_=~/^stores\_(.*)/) || ($_=~/^parameter\_(.*)/)) {
1808: my $key=$_;
1809: my $display=
1810: &Apache::lonnet::metadata($srcf,$key.'.display');
1811: unless ($display) {
1812: $display.=
1813: &Apache::lonnet::metadata($srcf,$key.'.name');
1814: }
1815: $display.='<br>'.$key;
1816: $allkeys{$key}=$display;
1817: }
1818: } # end of foreach
1819: }
1820: }
1821: }
1822: } # end of foreach (keys(%bighash))
1823: untie(%bighash);
1824:
1825: #
1826: # %allkeys has a list of storage and parameter displays by unikey
1827: # %allassess has a list of all resource displays by symb
1828: #
1829:
1830: if ($stype eq 'assesscalc') {
1831: %current=%allkeys;
1832: } elsif ($stype eq 'studentcalc') {
1833: %current=%allassess;
1834: }
1835: $updatedata{$ENV{'request.course.fn'}.'_'.$stype}=
1836: join('___;___',%current);
1837: } else {
1838: return 'Could not access course data';
1839: }
1840: # ------------------------------------------------------ Get current from cache
1841: } else {
1842: %current=split(/\_\_\_\;\_\_\_/,
1843: $updatedata{$ENV{'request.course.fn'}.'_'.$stype});
1844: }
1845: # -------------------- Find discrepancies between the course row table and this
1846: #
1847: my %f=&getformulas($safeeval);
1848: my $changed=0;
1849:
1850: my $maxrow=0;
1851: my %existing=();
1852:
1853: # ----------------------------------------------------------- Now obsolete rows
1854: foreach (keys(%f)) {
1855: if ($_=~/^A(\d+)/) {
1856: $maxrow=($1>$maxrow)?$1:$maxrow;
1857: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1858: $existing{$usy}=1;
1859: unless ((defined($current{$usy})) || (!$1) ||
1860: ($f{$_}=~/^(\~\~\~|\-\-\-)/)){
1861: $f{$_}='!!! Obsolete';
1862: $changed=1;
1863: } elsif ($ufn) {
1864: $current{$usy}
1865: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1866: }
1867: }
1868: }
1869:
1870: # -------------------------------------------------------- New and unknown keys
1871:
1872: foreach (keys(%current)) {
1873: unless ($existing{$_}) {
1874: $changed=1;
1875: $maxrow++;
1876: $f{'A'.$maxrow}=$_;
1877: }
1878: }
1879:
1880: if ($changed) { &setformulas($safeeval,%f); }
1881:
1882: &setmaxrow($safeeval,$maxrow);
1883: &setrowlabels($safeeval,%current);
1884:
1885: undef %current;
1886: undef %existing;
1887: }
1888:
1889: # ------------------------------------------------ Load data for one assessment
1890:
1891: sub loadstudent {
1892: my $safeeval=shift;
1893: my %c=();
1894: my %f=&getformulas($safeeval);
1895: $cachedassess=&getuname($safeeval).':'.&getudom($safeeval);
1896: %cachedstores=();
1897: {
1898: my $reply=&Apache::lonnet::reply('dump:'.&getudom($safeeval).':'.
1899: &getuname($safeeval).':'.
1900: &getcid($safeeval),
1901: &getuhome($safeeval));
1902: unless ($reply=~/^error\:/) {
1903: foreach ( split(/\&/,$reply)) {
1904: my ($name,$value)=split(/\=/,$_);
1905: $cachedstores{&Apache::lonnet::unescape($name)}=
1906: &Apache::lonnet::unescape($value);
1907: }
1908: }
1909: }
1910: my @assessdata=();
1911: foreach (keys(%f)) {
1912: if ($_=~/^A(\d+)/) {
1913: my $row=$1;
1914: unless (($f{$_}=~/^[\!\~\-]/) || ($row==0)) {
1915: my ($usy,$ufn)=split(/\_\_\&\&\&\_\_/,$f{$_});
1916: @assessdata=&exportsheet(&getuname($safeeval),
1917: &getudom($safeeval),
1918: 'assesscalc',$usy,$ufn);
1919: my $index=0;
1920: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1921: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1922: if ($assessdata[$index]) {
1923: my $col=$_;
1924: if ($assessdata[$index]=~/\D/) {
1925: $c{$col.$row}="'".$assessdata[$index]."'";
1926: } else {
1927: $c{$col.$row}=$assessdata[$index];
1928: }
1929: unless ($col eq 'A') {
1930: $f{$col.$row}='import';
1931: }
1932: }
1933: $index++;
1934: }
1935: }
1936: }
1937: }
1938: $cachedassess='';
1939: undef %cachedstores;
1940: &setformulas($safeeval,%f);
1941: &setconstants($safeeval,%c);
1942: }
1943:
1944: # --------------------------------------------------- Load data for one student
1945:
1946: sub loadcourse {
1947: my ($safeeval,$r)=@_;
1948: my %c=();
1949: my %f=&getformulas($safeeval);
1950: my $total=0;
1951: foreach (keys(%f)) {
1952: if ($_=~/^A(\d+)/) {
1953: unless ($f{$_}=~/^[\!\~\-]/) { $total++; }
1954: }
1955: }
1956: my $now=0;
1957: my $since=time;
1958: $r->print(<<ENDPOP);
1959: <script>
1960: popwin=open('','popwin','width=400,height=100');
1961: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1962: '<h3>Spreadsheet Calculation Progress</h3>'+
1963: '<form name=popremain>'+
1964: '<input type=text size=35 name=remaining value=Starting></form>'+
1965: '</body></html>');
1966: popwin.document.close();
1967: </script>
1968: ENDPOP
1969: $r->rflush();
1970: foreach (keys(%f)) {
1971: if ($_=~/^A(\d+)/) {
1972: my $row=$1;
1973: unless (($f{$_}=~/^[\!\~\-]/) || ($row==0)) {
1974: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1975: 'studentcalc');
1976: undef %userrdatas;
1977: $now++;
1978: $r->print('<script>popwin.document.popremain.remaining.value="'.
1979: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1980: ' secs remaining";</script>');
1981: $r->rflush();
1982:
1983: my $index=0;
1984: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1985: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1986: if ($studentdata[$index]) {
1987: my $col=$_;
1988: if ($studentdata[$index]=~/\D/) {
1989: $c{$col.$row}="'".$studentdata[$index]."'";
1990: } else {
1991: $c{$col.$row}=$studentdata[$index];
1992: }
1993: unless ($col eq 'A') {
1994: $f{$col.$row}='import';
1995: }
1996: }
1997: $index++;
1998: }
1999: }
2000: }
2001: }
2002: &setformulas($safeeval,%f);
2003: &setconstants($safeeval,%c);
2004: $r->print('<script>popwin.close()</script>');
2005: $r->rflush();
2006: }
2007:
2008: # ------------------------------------------------ Load data for one assessment
2009:
2010: sub loadassessment {
2011: my $safeeval=shift;
2012:
2013: my $uhome=&getuhome($safeeval);
2014: my $uname=&getuname($safeeval);
2015: my $udom=&getudom($safeeval);
2016: my $symb=&getusymb($safeeval);
2017: my $cid=&getcid($safeeval);
2018: my $cnum=&getcnum($safeeval);
2019: my $cdom=&getcdom($safeeval);
2020: my $chome=&getchome($safeeval);
2021:
2022: my $namespace;
2023: unless ($namespace=$cid) { return ''; }
2024:
2025: # ----------------------------------------------------------- Get stored values
2026:
2027: my %returnhash=();
2028:
2029: if ($cachedassess eq $uname.':'.$udom) {
2030: #
2031: # get data out of the dumped stores
2032: #
2033:
2034: my $version=$cachedstores{'version:'.$symb};
2035: my $scope;
2036: for ($scope=1;$scope<=$version;$scope++) {
2037: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
2038: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
2039: }
2040: }
2041:
2042: } else {
2043: #
2044: # restore individual
2045: #
2046:
2047: my $answer=&Apache::lonnet::reply(
2048: "restore:$udom:$uname:".
2049: &Apache::lonnet::escape($namespace).":".
2050: &Apache::lonnet::escape($symb),$uhome);
2051: foreach (split(/\&/,$answer)) {
2052: my ($name,$value)=split(/\=/,$_);
2053: $returnhash{&Apache::lonnet::unescape($name)}=
2054: &Apache::lonnet::unescape($value);
2055: }
2056: my $version;
2057: for ($version=1;$version<=$returnhash{'version'};$version++) {
2058: foreach (split(/\:/,$returnhash{$version.':keys'})) {
2059: $returnhash{$_}=$returnhash{$version.':'.$_};
2060: }
2061: }
2062: }
2063: # ----------------------------- returnhash now has all stores for this resource
2064:
2065: # --------- convert all "_" to "." to be able to use libraries, multiparts, etc
2066:
2067: my @oldkeys=keys %returnhash;
2068:
2069: foreach (@oldkeys) {
2070: my $name=$_;
2071: my $value=$returnhash{$_};
2072: delete $returnhash{$_};
2073: $name=~s/\_/\./g;
2074: $returnhash{$name}=$value;
2075: }
2076:
2077: # ---------------------------- initialize coursedata and userdata for this user
2078: undef %courseopt;
2079: undef %useropt;
2080:
2081: my $userprefix=$uname.'_'.$udom.'_';
2082:
2083: unless ($uhome eq 'no_host') {
2084: # -------------------------------------------------------------- Get coursedata
2085: unless
2086: ((time-$courserdatas{$cid.'.last_cache'})<240) {
2087: my $reply=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.
2088: ':resourcedata',$chome);
2089: if ($reply!~/^error\:/) {
2090: $courserdatas{$cid}=$reply;
2091: $courserdatas{$cid.'.last_cache'}=time;
2092: }
2093: }
2094: foreach (split(/\&/,$courserdatas{$cid})) {
2095: my ($name,$value)=split(/\=/,$_);
2096: $courseopt{$userprefix.&Apache::lonnet::unescape($name)}=
2097: &Apache::lonnet::unescape($value);
2098: }
2099: # --------------------------------------------------- Get userdata (if present)
2100: unless
2101: ((time-$userrdatas{$uname.'___'.$udom.'.last_cache'})<240) {
2102: my $reply=
2103: &Apache::lonnet::reply('dump:'.$udom.':'.$uname.':resourcedata',$uhome);
2104: if ($reply!~/^error\:/) {
2105: $userrdatas{$uname.'___'.$udom}=$reply;
2106: $userrdatas{$uname.'___'.$udom.'.last_cache'}=time;
2107: }
2108: }
2109: foreach (split(/\&/,$userrdatas{$uname.'___'.$udom})) {
2110: my ($name,$value)=split(/\=/,$_);
2111: $useropt{$userprefix.&Apache::lonnet::unescape($name)}=
2112: &Apache::lonnet::unescape($value);
2113: }
2114: }
2115: # ----------------- now courseopt, useropt initialized for this user and course
2116: # (used by parmval)
2117:
2118: #
2119: # Load keys for this assessment only
2120: #
2121: my %thisassess=();
2122: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2123:
2124: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2125: $thisassess{$_}=1;
2126: }
2127: #
2128: # Load parameters
2129: #
2130: my %c=();
2131:
2132: if (tie(%parmhash,'GDBM_File',
2133: &getcfn($safeeval).'_parms.db',&GDBM_READER(),0640)) {
2134: my %f=&getformulas($safeeval);
2135: foreach (keys(%f)) {
2136: if ($_=~/^A/) {
2137: unless ($f{$_}=~/^[\!\~\-]/) {
2138: if ($f{$_}=~/^parameter/) {
2139: if ($thisassess{$f{$_}}) {
2140: my $val=&parmval($f{$_},$safeeval);
2141: $c{$_}=$val;
2142: $c{$f{$_}}=$val;
2143: }
2144: } else {
2145: my $key=$f{$_};
2146: my $ckey=$key;
2147: $key=~s/^stores\_/resource\./;
2148: $key=~s/\_/\./g;
2149: $c{$_}=$returnhash{$key};
2150: $c{$ckey}=$returnhash{$key};
2151: }
2152: }
2153: }
2154: }
2155: untie(%parmhash);
2156: }
2157: &setconstants($safeeval,%c);
2158: }
2159:
2160: # --------------------------------------------------------- Various form fields
2161:
2162: sub textfield {
2163: my ($title,$name,$value)=@_;
2164: return "\n<p><b>$title:</b><br>".
2165: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2166: }
2167:
2168: sub hiddenfield {
2169: my ($name,$value)=@_;
2170: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2171: }
2172:
2173: sub selectbox {
2174: my ($title,$name,$value,%options)=@_;
2175: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2176: foreach (sort keys(%options)) {
2177: $selout.='<option value="'.$_.'"';
2178: if ($_ eq $value) { $selout.=' selected'; }
2179: $selout.='>'.$options{$_}.'</option>';
2180: }
2181: return $selout.'</select>';
2182: }
2183:
2184: # =============================================== Update information in a sheet
2185: #
2186: # Add new users or assessments, etc.
2187: #
2188:
2189: sub updatesheet {
2190: my $safeeval=shift;
2191: my $stype=&gettype($safeeval);
2192: if ($stype eq 'classcalc') {
2193: return &updateclasssheet($safeeval);
2194: } else {
2195: return &updatestudentassesssheet($safeeval);
2196: }
2197: }
2198:
2199: # =================================================== Load the rows for a sheet
2200: #
2201: # Import the data for rows
2202: #
2203:
2204: sub loadrows {
2205: my ($safeeval,$r)=@_;
2206: my $stype=&gettype($safeeval);
2207: if ($stype eq 'classcalc') {
2208: &loadcourse($safeeval,$r);
2209: } elsif ($stype eq 'studentcalc') {
2210: &loadstudent($safeeval);
2211: } else {
2212: &loadassessment($safeeval);
2213: }
2214: }
2215:
2216: # ======================================================= Forced recalculation?
2217:
2218: sub checkthis {
2219: my ($keyname,$time)=@_;
2220: return ($time<$expiredates{$keyname});
2221: }
2222: sub forcedrecalc {
2223: my ($uname,$udom,$stype,$usymb)=@_;
2224: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2225: my $time=$oldsheets{$key.'.time'};
2226: if ($ENV{'form.forcerecalc'}) { return 1; }
2227: unless ($time) { return 1; }
2228: if ($stype eq 'assesscalc') {
2229: my $map=(split(/\_\_\_/,$usymb))[0];
2230: if (&checkthis('::assesscalc:',$time) ||
2231: &checkthis('::assesscalc:'.$map,$time) ||
2232: &checkthis('::assesscalc:'.$usymb,$time) ||
2233: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2234: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2235: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2236: return 1;
2237: }
2238: } else {
2239: if (&checkthis('::studentcalc:',$time) ||
2240: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2241: return 1;
2242: }
2243: }
2244: return 0;
2245: }
2246:
2247: # ============================================================== Export handler
2248: #
2249: # Non-interactive call from with program
2250: #
2251:
2252: sub exportsheet {
2253: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2254: my @exportarr=();
2255:
2256: if (($usymb=~/^\_(\w+)/) && (!$fn)) {
2257: $fn='default_'.$1;
2258: }
2259:
2260: #
2261: # Check if cached
2262: #
2263:
2264: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2265: my $found='';
2266:
2267: if ($oldsheets{$key}) {
2268: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2269: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2270: if ($name eq $fn) {
2271: $found=$value;
2272: }
2273: }
2274: }
2275:
2276: unless ($found) {
2277: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2278: if ($oldsheets{$key}) {
2279: foreach (split(/\_\_\_\&\_\_\_/,$oldsheets{$key})) {
2280: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2281: if ($name eq $fn) {
2282: $found=$value;
2283: }
2284: }
2285: }
2286: }
2287: #
2288: # Check if still valid
2289: #
2290: if ($found) {
2291: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2292: $found='';
2293: }
2294: }
2295:
2296: if ($found) {
2297: #
2298: # Return what was cached
2299: #
2300: @exportarr=split(/\_\_\_\;\_\_\_/,$found);
2301:
2302: } else {
2303: #
2304: # Not cached
2305: #
2306:
2307: my $thissheet=&makenewsheet($uname,$udom,$stype,$usymb);
2308: &readsheet($thissheet,$fn);
2309: &updatesheet($thissheet);
2310: &loadrows($thissheet);
2311: &calcsheet($thissheet);
2312: @exportarr=&exportdata($thissheet);
2313: #
2314: # Store now
2315: #
2316: my $cid=$ENV{'request.course.id'};
2317: my $current='';
2318: if ($stype eq 'studentcalc') {
2319: $current=&Apache::lonnet::reply('get:'.
2320: $ENV{'course.'.$cid.'.domain'}.':'.
2321: $ENV{'course.'.$cid.'.num'}.
2322: ':nohist_calculatedsheets:'.
2323: &Apache::lonnet::escape($key),
2324: $ENV{'course.'.$cid.'.home'});
2325: } else {
2326: $current=&Apache::lonnet::reply('get:'.
2327: &getudom($thissheet).':'.
2328: &getuname($thissheet).
2329: ':nohist_calculatedsheets_'.
2330: $ENV{'request.course.id'}.':'.
2331: &Apache::lonnet::escape($key),
2332: &getuhome($thissheet));
2333:
2334: }
2335: my %currentlystored=();
2336: unless ($current=~/^error\:/) {
2337: foreach (split(/\_\_\_\&\_\_\_/,&Apache::lonnet::unescape($current))) {
2338: my ($name,$value)=split(/\_\_\_\=\_\_\_/,$_);
2339: $currentlystored{$name}=$value;
2340: }
2341: }
2342: $currentlystored{$fn}=join('___;___',@exportarr);
2343:
2344: my $newstore='';
2345: foreach (keys(%currentlystored)) {
2346: if ($newstore) { $newstore.='___&___'; }
2347: $newstore.=$_.'___=___'.$currentlystored{$_};
2348: }
2349: my $now=time;
2350: if ($stype eq 'studentcalc') {
2351: &Apache::lonnet::reply('put:'.
2352: $ENV{'course.'.$cid.'.domain'}.':'.
2353: $ENV{'course.'.$cid.'.num'}.
2354: ':nohist_calculatedsheets:'.
2355: &Apache::lonnet::escape($key).'='.
2356: &Apache::lonnet::escape($newstore).'&'.
2357: &Apache::lonnet::escape($key).'.time='.$now,
2358: $ENV{'course.'.$cid.'.home'});
2359: } else {
2360: &Apache::lonnet::reply('put:'.
2361: &getudom($thissheet).':'.
2362: &getuname($thissheet).
2363: ':nohist_calculatedsheets_'.
2364: $ENV{'request.course.id'}.':'.
2365: &Apache::lonnet::escape($key).'='.
2366: &Apache::lonnet::escape($newstore).'&'.
2367: &Apache::lonnet::escape($key).'.time='.$now,
2368: &getuhome($thissheet));
2369: }
2370: }
2371: return @exportarr;
2372: }
2373: # ============================================================ Expiration Dates
2374: #
2375: # Load previously cached student spreadsheets for this course
2376: #
2377:
2378: sub expirationdates {
2379: undef %expiredates;
2380: my $cid=$ENV{'request.course.id'};
2381: my $reply=&Apache::lonnet::reply('dump:'.
2382: $ENV{'course.'.$cid.'.domain'}.':'.
2383: $ENV{'course.'.$cid.'.num'}.
2384: ':nohist_expirationdates',
2385: $ENV{'course.'.$cid.'.home'});
2386: unless ($reply=~/^error\:/) {
2387: foreach (split(/\&/,$reply)) {
2388: my ($name,$value)=split(/\=/,$_);
2389: $expiredates{&Apache::lonnet::unescape($name)}
2390: =&Apache::lonnet::unescape($value);
2391: }
2392: }
2393: }
2394:
2395: # ===================================================== Calculated sheets cache
2396: #
2397: # Load previously cached student spreadsheets for this course
2398: #
2399:
2400: sub cachedcsheets {
2401: my $cid=$ENV{'request.course.id'};
2402: my $reply=&Apache::lonnet::reply('dump:'.
2403: $ENV{'course.'.$cid.'.domain'}.':'.
2404: $ENV{'course.'.$cid.'.num'}.
2405: ':nohist_calculatedsheets',
2406: $ENV{'course.'.$cid.'.home'});
2407: unless ($reply=~/^error\:/) {
2408: foreach ( split(/\&/,$reply)) {
2409: my ($name,$value)=split(/\=/,$_);
2410: $oldsheets{&Apache::lonnet::unescape($name)}
2411: =&Apache::lonnet::unescape($value);
2412: }
2413: }
2414: }
2415:
2416: # ===================================================== Calculated sheets cache
2417: #
2418: # Load previously cached assessment spreadsheets for this student
2419: #
2420:
2421: sub cachedssheets {
2422: my ($sname,$sdom,$shome)=@_;
2423: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2424: my $cid=$ENV{'request.course.id'};
2425: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2426: ':nohist_calculatedsheets_'.
2427: $ENV{'request.course.id'},
2428: $shome);
2429: unless ($reply=~/^error\:/) {
2430: foreach ( split(/\&/,$reply)) {
2431: my ($name,$value)=split(/\=/,$_);
2432: $oldsheets{&Apache::lonnet::unescape($name)}
2433: =&Apache::lonnet::unescape($value);
2434: }
2435: }
2436: $loadedcaches{$sname.'_'.$sdom}=1;
2437: }
2438: }
2439:
2440: # ===================================================== Calculated sheets cache
2441: #
2442: # Load previously cached assessment spreadsheets for this student
2443: #
2444:
2445: # ================================================================ Main handler
2446: #
2447: # Interactive call to screen
2448: #
2449: #
2450:
2451:
2452: sub handler {
2453: my $r=shift;
2454:
2455: if ($r->header_only) {
2456: $r->content_type('text/html');
2457: $r->send_http_header;
2458: return OK;
2459: }
2460:
2461: # ---------------------------------------------------- Global directory configs
2462:
2463: $includedir=$r->dir_config('lonIncludes');
2464: $tmpdir=$r->dir_config('lonDaemons').'/tmp/';
2465:
2466: # ----------------------------------------------------- Needs to be in a course
2467:
2468: if ($ENV{'request.course.fn'}) {
2469:
2470: # --------------------------- Get query string for limited number of parameters
2471:
2472: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2473: ['uname','udom','usymb','ufn']);
2474:
2475: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2476: $ENV{'form.ufn'}='default_'.$1;
2477: }
2478:
2479: # -------------------------------------- Interactive loading of specific sheet?
2480: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2481: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2482: }
2483: # ------------------------------------------- Nothing there? Must be login user
2484:
2485: my $aname;
2486: my $adom;
2487:
2488: unless ($ENV{'form.uname'}) {
2489: $aname=$ENV{'user.name'};
2490: $adom=$ENV{'user.domain'};
2491: } else {
2492: $aname=$ENV{'form.uname'};
2493: $adom=$ENV{'form.udom'};
2494: }
2495:
2496: # ------------------------------------------------------------------- Open page
2497:
2498: $r->content_type('text/html');
2499: $r->header_out('Cache-control','no-cache');
2500: $r->header_out('Pragma','no-cache');
2501: $r->send_http_header;
2502:
2503: # --------------------------------------------------------------- Screen output
2504:
2505: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2506: $r->print(<<ENDSCRIPT);
2507: <script language="JavaScript">
2508:
2509: function celledit(cn,cf) {
2510: var cnf=prompt(cn,cf);
2511: if (cnf!=null) {
2512: document.sheet.unewfield.value=cn;
2513: document.sheet.unewformula.value=cnf;
2514: document.sheet.submit();
2515: }
2516: }
2517:
2518: function changesheet(cn) {
2519: document.sheet.unewfield.value=cn;
2520: document.sheet.unewformula.value='changesheet';
2521: document.sheet.submit();
2522: }
2523:
2524: function insertrow(cn) {
2525: document.sheet.unewfield.value='insertrow';
2526: document.sheet.unewformula.value=cn;
2527: document.sheet.submit();
2528: }
2529:
2530: </script>
2531: ENDSCRIPT
2532: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
2533: '<form action="'.$r->uri.'" name=sheet method=post>'.
2534: &hiddenfield('uname',$ENV{'form.uname'}).
2535: &hiddenfield('udom',$ENV{'form.udom'}).
2536: &hiddenfield('usymb',$ENV{'form.usymb'}).
2537: &hiddenfield('unewfield','').
2538: &hiddenfield('unewformula',''));
2539:
2540: # ---------------------- Make sure that this gets out, even if user hits "stop"
2541:
2542: $r->rflush();
2543:
2544: # ---------------------------------------------------------------- Full recalc?
2545:
2546:
2547: if ($ENV{'form.forcerecalc'}) {
2548: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2549: undef %spreadsheets;
2550: undef %courserdatas;
2551: undef %userrdatas;
2552: undef %defaultsheets;
2553: undef %updatedata;
2554: }
2555:
2556: # ---------------------------------------- Read new sheet or modified worksheet
2557:
2558: $r->uri=~/\/(\w+)$/;
2559:
2560: my $asheet=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2561:
2562: # ------------------------ If a new formula had been entered, go from work copy
2563:
2564: if ($ENV{'form.unewfield'}) {
2565: $r->print('<h2>Modified Workcopy</h2>');
2566: $ENV{'form.unewformula'}=~s/\'/\"/g;
2567: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2568: $ENV{'form.unewformula'}.'<p>');
2569: &setfilename($asheet,$ENV{'form.ufn'});
2570: &tmpread($asheet,
2571: $ENV{'form.unewfield'},$ENV{'form.unewformula'});
2572:
2573: } elsif ($ENV{'form.saveas'}) {
2574: &setfilename($asheet,$ENV{'form.ufn'});
2575: &tmpread($asheet);
2576: } else {
2577: &readsheet($asheet,$ENV{'form.ufn'});
2578: }
2579:
2580: # -------------------------------------------------- Print out user information
2581:
2582: unless (&gettype($asheet) eq 'classcalc') {
2583: $r->print('<p><b>User:</b> '.&getuname($asheet).
2584: '<br><b>Domain:</b> '.&getudom($asheet));
2585: if (&getcsec($asheet) eq '-1') {
2586: $r->print('<h3><font color=red>'.
2587: 'Not a student in this course</font></h3>');
2588: } else {
2589: $r->print('<br><b>Section/Group:</b> '.&getcsec($asheet));
2590: }
2591: if ($ENV{'form.usymb'}) {
2592: $r->print('<br><b>Assessment:</b> <tt>'.$ENV{'form.usymb'}.'</tt>');
2593: }
2594: }
2595:
2596: # ---------------------------------------------------- See if user can see this
2597:
2598: if ((&gettype($asheet) eq 'classcalc') ||
2599: (&getuname($asheet) ne $ENV{'user.name'}) ||
2600: (&getudom($asheet) ne $ENV{'user.domain'})) {
2601: unless (&Apache::lonnet::allowed('vgr',&getcid($asheet))) {
2602: $r->print(
2603: '<h1>Access Permission Denied</h1></form></body></html>');
2604: return OK;
2605: }
2606: }
2607:
2608: # ---------------------------------------------------------- Additional options
2609:
2610: $r->print(
2611: '<input type=submit name=forcerecalc value="Completely Recalculate Sheet"><p>'
2612: );
2613: if (&gettype($asheet) eq 'assesscalc') {
2614: $r->print ('<p><font size=+2><a href="/adm/studentcalc?uname='.
2615: &getuname($asheet).
2616: '&udom='.&getudom($asheet).
2617: '">Level up: Student Sheet</a></font><p>');
2618: }
2619:
2620: if ((&gettype($asheet) eq 'studentcalc') &&
2621: (&Apache::lonnet::allowed('vgr',&getcid($asheet)))) {
2622: $r->print (
2623: '<p><font size=+2><a href="/adm/classcalc">'.
2624: 'Level up: Course Sheet</a></font><p>');
2625: }
2626:
2627:
2628: # ----------------------------------------------------------------- Save dialog
2629:
2630:
2631: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2632: my $fname=$ENV{'form.ufn'};
2633: $fname=~s/\_[^\_]+$//;
2634: if ($fname eq 'default') { $fname='course_default'; }
2635: $r->print('<input type=submit name=saveas value="Save as ...">'.
2636: '<input type=text size=20 name=newfn value="'.$fname.
2637: '"> (make default: <input type=checkbox name="makedefufn">)<p>');
2638: }
2639:
2640: $r->print(&hiddenfield('ufn',&getfilename($asheet)));
2641:
2642: # ----------------------------------------------------------------- Load dialog
2643: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2644: $r->print('<p><input type=submit name=load value="Load ...">'.
2645: '<select name="loadthissheet">'.
2646: '<option name="default">Default</option>');
2647: foreach (&othersheets($asheet,&gettype($asheet))) {
2648: $r->print('<option name="'.$_.'"');
2649: if ($ENV{'form.ufn'} eq $_) {
2650: $r->print(' selected');
2651: }
2652: $r->print('>'.$_.'</option>');
2653: }
2654: $r->print('</select><p>');
2655: if (&gettype($asheet) eq 'studentcalc') {
2656: &setothersheets($asheet,&othersheets($asheet,'assesscalc'));
2657: }
2658: }
2659:
2660: # --------------------------------------------------------------- Cached sheets
2661:
2662: &expirationdates();
2663:
2664: undef %oldsheets;
2665: undef %loadedcaches;
2666:
2667: if (&gettype($asheet) eq 'classcalc') {
2668: $r->print("Loading previously calculated student sheets ...<br>\n");
2669: $r->rflush();
2670: &cachedcsheets();
2671: } elsif (&gettype($asheet) eq 'studentcalc') {
2672: $r->print("Loading previously calculated assessment sheets ...<br>\n");
2673: $r->rflush();
2674: &cachedssheets(&getuname($asheet),&getudom($asheet),
2675: &getuhome($asheet));
2676: }
2677:
2678: # ----------------------------------------------------- Update sheet, load rows
2679:
2680: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2681: $r->rflush();
2682:
2683: &updatesheet($asheet);
2684:
2685: $r->print("Updated rows, loading row data ...<br>\n");
2686: $r->rflush();
2687:
2688: &loadrows($asheet,$r);
2689:
2690: $r->print("Loaded row data, calculating sheet ...<br>\n");
2691: $r->rflush();
2692:
2693: my $calcoutput=&calcsheet($asheet);
2694: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2695:
2696: # ---------------------------------------------------- See if something to save
2697:
2698: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2699: my $fname='';
2700: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2701: $fname=~s/\W/\_/g;
2702: if ($fname eq 'default') { $fname='course_default'; }
2703: $fname.='_'.&gettype($asheet);
2704: &setfilename($asheet,$fname);
2705: $ENV{'form.ufn'}=$fname;
2706: $r->print('<p>Saving spreadsheet: '.
2707: &writesheet($asheet,$ENV{'form.makedefufn'}).'<p>');
2708: }
2709: }
2710:
2711: # ------------------------------------------------ Write the modified worksheet
2712:
2713: $r->print('<b>Current sheet:</b> '.&getfilename($asheet).'<p>');
2714:
2715: &tmpwrite($asheet);
2716:
2717: if (&gettype($asheet) eq 'studentcalc') {
2718: $r->print('<br>Show rows with empty A column: ');
2719: } else {
2720: $r->print('<br>Show empty rows: ');
2721: }
2722:
2723: $r->print(&hiddenfield('userselhidden','true').
2724: '<input type=checkbox name=showall onClick="submit()"');
2725:
2726: if ($ENV{'form.showall'}) {
2727: $r->print(' checked');
2728: } else {
2729: unless ($ENV{'form.userselhidden'}) {
2730: unless
2731: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2732: $r->print(' checked');
2733: $ENV{'form.showall'}=1;
2734: }
2735: }
2736: }
2737: $r->print('>');
2738:
2739: if (&gettype($asheet) eq 'classcalc') {
2740: $r->print(
2741: ' Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
2742: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
2743: $r->print('>');
2744: }
2745:
2746: # ------------------------------------------------------------------ Insertrows
2747: $r->print(' Student Status: '.
2748: &Apache::lonhtmlcommon::StatusOptions
2749: ($ENV{'form.Status'},'sheet'));
2750:
2751: $r->print(<<ENDINSERTBUTTONS);
2752: <br>
2753: <input type='button' onClick='insertrow("top");'
2754: value='Insert Row Top'>
2755: <input type='button' onClick='insertrow("bottom");'
2756: value='Insert Row Bottom'><br>
2757: ENDINSERTBUTTONS
2758:
2759: # ------------------------------------------------------------- Print out sheet
2760:
2761: &outsheet($r,$asheet);
2762: $r->print('</form></body></html>');
2763:
2764: # ------------------------------------------------------------------------ Done
2765: } else {
2766: # ----------------------------- Not in a course, or not allowed to modify parms
2767: $ENV{'user.error.msg'}=
2768: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2769: return HTTP_NOT_ACCEPTABLE;
2770: }
2771: return OK;
2772:
2773: }
2774:
2775: 1;
2776: __END__
2777:
2778:
2779:
2780:
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