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lonspreadsheet.pm
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1.125:
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Thu Oct 24 14:34:07 2002 UTC (21 years, 8 months ago) by
matthew
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HEAD
Added &format_rowlabel.
Changed the calling of &setrowlabels
The row labels are no longer a part of the safe space.
The row labels now have formats that must be respected. See &format_rowlabel
for the code which acts on them.
A few other minor changes.
There is a bug in here somewhere which causes the assessment sheets to not
have any data in them. Not for general consumption.
1: #
2: # $Id: lonspreadsheet.pm,v 1.125 2002/10/24 14:34:07 matthew 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: # POD required stuff:
30:
31: =head1 NAME
32:
33: lonspreadsheet
34:
35: =head1 SYNOPSIS
36:
37: Spreadsheet interface to internal LON-CAPA data
38:
39: =head1 DESCRIPTION
40:
41: Lonspreadsheet provides course coordinators the ability to manage their
42: students grades online. The students are able to view their own grades, but
43: not the grades of their peers. The spreadsheet is highly customizable,
44: offering the ability to use Perl code to manipulate data, as well as many
45: built-in functions.
46:
47: =head2 Functions available to user of lonspreadsheet
48:
49: =over 4
50:
51: =cut
52:
53: package Apache::lonspreadsheet;
54:
55: use strict;
56: use Safe;
57: use Safe::Hole;
58: use Opcode;
59: use Apache::lonnet;
60: use Apache::Constants qw(:common :http);
61: use GDBM_File;
62: use HTML::TokeParser;
63: use Apache::lonhtmlcommon;
64: use Apache::loncoursedata;
65: #
66: # Caches for coursewide information
67: #
68: my %Section;
69:
70: #
71: # Caches for previously calculated spreadsheets
72: #
73:
74: my %oldsheets;
75: my %loadedcaches;
76: my %expiredates;
77:
78: #
79: # Cache for stores of an individual user
80: #
81:
82: my $cachedassess;
83: my %cachedstores;
84:
85: #
86: # These cache hashes need to be independent of user, resource and course
87: # (user and course can/should be in the keys)
88: #
89:
90: my %spreadsheets;
91: my %courserdatas;
92: my %userrdatas;
93: my %defaultsheets;
94: my %updatedata;
95:
96: #
97: # These global hashes are dependent on user, course and resource,
98: # and need to be initialized every time when a sheet is calculated
99: #
100: my %courseopt;
101: my %useropt;
102: my %parmhash;
103:
104: #
105: # Some hashes for stats on timing and performance
106: #
107:
108: my %starttimes;
109: my %usedtimes;
110: my %numbertimes;
111:
112: # Stuff that only the screen handler can know
113:
114: my $includedir;
115: my $tmpdir;
116:
117: # =============================================================================
118: # ===================================== Implements an instance of a spreadsheet
119:
120: ##
121: ## mask - used to reside in the safe space.
122: ##
123: sub mask {
124: my ($lower,$upper)=@_;
125: #
126: my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
127: my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
128: #
129: my $alpha='';
130: my $num='';
131: #
132: if (($la eq '*') || ($ua eq '*')) {
133: $alpha='[A-Za-z]';
134: } else {
135:
136: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
137: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
138: $alpha='['.$la.'-'.$ua.']';
139: } else {
140: $alpha='['.$la.'-Za-'.$ua.']';
141: }
142: }
143: if (($ld eq '*') || ($ud eq '*')) {
144: $num='\d+';
145: } else {
146: if (length($ld)!=length($ud)) {
147: $num.='(';
148: foreach ($ld=~m/\d/g) {
149: $num.='['.$_.'-9]';
150: }
151: if (length($ud)-length($ld)>1) {
152: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
153: }
154: $num.='|';
155: foreach ($ud=~m/\d/g) {
156: $num.='[0-'.$_.']';
157: }
158: $num.=')';
159: } else {
160: my @lda=($ld=~m/\d/g);
161: my @uda=($ud=~m/\d/g);
162: my $i;
163: my $j=0;
164: my $notdone=1;
165: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
166: if ($lda[$i]==$uda[$i]) {
167: $num.=$lda[$i];
168: $j=$i;
169: } else {
170: $notdone=0;
171: }
172: }
173: if ($j<$#lda-1) {
174: $num.='('.$lda[$j+1];
175: for ($i=$j+2;$i<=$#lda;$i++) {
176: $num.='['.$lda[$i].'-9]';
177: }
178: if ($uda[$j+1]-$lda[$j+1]>1) {
179: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
180: ($#lda-$j-1).'}';
181: }
182: $num.='|'.$uda[$j+1];
183: for ($i=$j+2;$i<=$#uda;$i++) {
184: $num.='[0-'.$uda[$i].']';
185: }
186: $num.=')';
187: } else {
188: if ($lda[-1]!=$uda[-1]) {
189: $num.='['.$lda[-1].'-'.$uda[-1].']';
190: }
191: }
192: }
193: }
194: return '^'.$alpha.$num."\$";
195: }
196:
197:
198:
199: sub initsheet {
200: my $safeeval = new Safe(shift);
201: my $safehole = new Safe::Hole;
202: $safeeval->permit("entereval");
203: $safeeval->permit(":base_math");
204: $safeeval->permit("sort");
205: $safeeval->deny(":base_io");
206: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
207: $safehole->wrap(\&Apache::lonspreadsheet::mask,$safeeval,'&mask');
208: $safeeval->share('$@');
209: my $code=<<'ENDDEFS';
210: # ---------------------------------------------------- Inside of the safe space
211:
212: #
213: # f: formulas
214: # t: intermediate format (variable references expanded)
215: # v: output values
216: # c: preloaded constants (A-column)
217: # rl: row label
218: # os: other spreadsheets (for student spreadsheet only)
219:
220: undef %sheet_values; # Holds the (computed, final) values for the sheet
221: # This is only written to by &calc, the spreadsheet computation routine.
222: # It is read by many functions
223: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
224: # which does the translation of strings like C5 into the value in C5.
225: # Used in &calc - %t holds the values that are actually eval'd.
226: undef %f; # Holds the formulas for each cell. This is the users
227: # (spreadsheet authors) data for each cell.
228: # set by &setformulas and returned by &getformulas
229: # &setformulas is called by &readsheet, &tmpread, &updateclasssheet,
230: # &updatestudentassesssheet, &loadstudent, &loadcourse
231: # &getformulas is called by &writesheet, &tmpwrite, &updateclasssheet,
232: # &updatestudentassesssheet, &loadstudent, &loadcourse, &loadassessment,
233: undef %c; # Holds the constants for a sheet. In the assessment
234: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
235: # &sett, and &setconstants. There is no &getconstants.
236: # &setconstants is called by &loadstudent, &loadcourse, &load assessment,
237: undef @os; # Holds the names of other spreadsheets - this is used to specify
238: # the spreadsheets that are available for the assessment sheet.
239: # Set by &setothersheets. &setothersheets is called by &handler. A
240: # related subroutine is &othersheets.
241:
242: $maxrow = 0;
243: $sheettype = '';
244:
245: # filename/reference of the sheet
246: $filename = '';
247:
248: # user data
249: $uname = '';
250: $uhome = '';
251: $udom = '';
252:
253: # course data
254:
255: $csec = '';
256: $chome= '';
257: $cnum = '';
258: $cdom = '';
259: $cid = '';
260: $coursefilename = '';
261:
262: # symb
263:
264: $usymb = '';
265:
266: # error messages
267: $errormsg = '';
268:
269:
270: #-------------------------------------------------------
271:
272: =item UWCALC(hashname,modules,units,date)
273:
274: returns the proportion of the module
275: weights not previously completed by the student.
276:
277: =over 4
278:
279: =item hashname
280:
281: name of the hash the module dates have been inserted into
282:
283: =item modules
284:
285: reference to a cell which contains a comma deliminated list of modules
286: covered by the assignment.
287:
288: =item units
289:
290: reference to a cell which contains a comma deliminated list of module
291: weights with respect to the assignment
292:
293: =item date
294:
295: reference to a cell which contains the date the assignment was completed.
296:
297: =back
298:
299: =cut
300:
301: #-------------------------------------------------------
302: sub UWCALC {
303: my ($hashname,$modules,$units,$date) = @_;
304: my @Modules = split(/,/,$modules);
305: my @Units = split(/,/,$units);
306: my $total_weight;
307: foreach (@Units) {
308: $total_weight += $_;
309: }
310: my $usum=0;
311: for (my $i=0; $i<=$#Modules; $i++) {
312: if (&HASH($hashname,$Modules[$i]) eq $date) {
313: $usum += $Units[$i];
314: }
315: }
316: return $usum/$total_weight;
317: }
318:
319: #-------------------------------------------------------
320:
321: =item CDLSUM(list)
322:
323: returns the sum of the elements in a cell which contains
324: a Comma Deliminate List of numerical values.
325: 'list' is a reference to a cell which contains a comma deliminated list.
326:
327: =cut
328:
329: #-------------------------------------------------------
330: sub CDLSUM {
331: my ($list)=@_;
332: my $sum;
333: foreach (split/,/,$list) {
334: $sum += $_;
335: }
336: return $sum;
337: }
338:
339: #-------------------------------------------------------
340:
341: =item CDLITEM(list,index)
342:
343: returns the item at 'index' in a Comma Deliminated List.
344:
345: =over 4
346:
347: =item list
348:
349: reference to a cell which contains a comma deliminated list.
350:
351: =item index
352:
353: the Perl index of the item requested (first element in list has
354: an index of 0)
355:
356: =back
357:
358: =cut
359:
360: #-------------------------------------------------------
361: sub CDLITEM {
362: my ($list,$index)=@_;
363: my @Temp = split/,/,$list;
364: return $Temp[$index];
365: }
366:
367: #-------------------------------------------------------
368:
369: =item CDLHASH(name,key,value)
370:
371: loads a comma deliminated list of keys into
372: the hash 'name', all with a value of 'value'.
373:
374: =over 4
375:
376: =item name
377:
378: name of the hash.
379:
380: =item key
381:
382: (a pointer to) a comma deliminated list of keys.
383:
384: =item value
385:
386: a single value to be entered for each key.
387:
388: =back
389:
390: =cut
391:
392: #-------------------------------------------------------
393: sub CDLHASH {
394: my ($name,$key,$value)=@_;
395: my @Keys;
396: my @Values;
397: # Check to see if we have multiple $key values
398: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
399: my $keymask = &mask($key);
400: # Assume the keys are addresses
401: my @Temp = grep /$keymask/,keys(%sheet_values);
402: @Keys = $sheet_values{@Temp};
403: } else {
404: $Keys[0]= $key;
405: }
406: my @Temp;
407: foreach $key (@Keys) {
408: @Temp = (@Temp, split/,/,$key);
409: }
410: @Keys = @Temp;
411: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
412: my $valmask = &mask($value);
413: my @Temp = grep /$valmask/,keys(%sheet_values);
414: @Values =$sheet_values{@Temp};
415: } else {
416: $Values[0]= $value;
417: }
418: $value = $Values[0];
419: # Add values to hash
420: for (my $i = 0; $i<=$#Keys; $i++) {
421: my $key = $Keys[$i];
422: if (! exists ($hashes{$name}->{$key})) {
423: $hashes{$name}->{$key}->[0]=$value;
424: } else {
425: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
426: $hashes{$name}->{$key} = \@Temp;
427: }
428: }
429: return "hash '$name' updated";
430: }
431:
432: #-------------------------------------------------------
433:
434: =item GETHASH(name,key,index)
435:
436: returns the element in hash 'name'
437: reference by the key 'key', at index 'index' in the values list.
438:
439: =cut
440:
441: #-------------------------------------------------------
442: sub GETHASH {
443: my ($name,$key,$index)=@_;
444: if (! defined($index)) {
445: $index = 0;
446: }
447: if ($key =~ /^[A-z]\d+$/) {
448: $key = $sheet_values{$key};
449: }
450: return $hashes{$name}->{$key}->[$index];
451: }
452:
453: #-------------------------------------------------------
454:
455: =item CLEARHASH(name)
456:
457: clears all the values from the hash 'name'
458:
459: =item CLEARHASH(name,key)
460:
461: clears all the values from the hash 'name' associated with the given key.
462:
463: =cut
464:
465: #-------------------------------------------------------
466: sub CLEARHASH {
467: my ($name,$key)=@_;
468: if (defined($key)) {
469: if (exists($hashes{$name}->{$key})) {
470: $hashes{$name}->{$key}=undef;
471: return "hash '$name' key '$key' cleared";
472: }
473: } else {
474: if (exists($hashes{$name})) {
475: $hashes{$name}=undef;
476: return "hash '$name' cleared";
477: }
478: }
479: return "Error in clearing hash";
480: }
481:
482: #-------------------------------------------------------
483:
484: =item HASH(name,key,value)
485:
486: loads values into an internal hash. If a key
487: already has a value associated with it, the values are sorted numerically.
488:
489: =item HASH(name,key)
490:
491: returns the 0th value in the hash 'name' associated with 'key'.
492:
493: =cut
494:
495: #-------------------------------------------------------
496: sub HASH {
497: my ($name,$key,$value)=@_;
498: my @Keys;
499: undef @Keys;
500: my @Values;
501: # Check to see if we have multiple $key values
502: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
503: my $keymask = &mask($key);
504: # Assume the keys are addresses
505: my @Temp = grep /$keymask/,keys(%sheet_values);
506: @Keys = $sheet_values{@Temp};
507: } else {
508: $Keys[0]= $key;
509: }
510: # If $value is empty, return the first value associated
511: # with the first key.
512: if (! $value) {
513: return $hashes{$name}->{$Keys[0]}->[0];
514: }
515: # Check to see if we have multiple $value(s)
516: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
517: my $valmask = &mask($value);
518: my @Temp = grep /$valmask/,keys(%sheet_values);
519: @Values =$sheet_values{@Temp};
520: } else {
521: $Values[0]= $value;
522: }
523: # Add values to hash
524: for (my $i = 0; $i<=$#Keys; $i++) {
525: my $key = $Keys[$i];
526: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
527: if (! exists ($hashes{$name}->{$key})) {
528: $hashes{$name}->{$key}->[0]=$value;
529: } else {
530: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
531: $hashes{$name}->{$key} = \@Temp;
532: }
533: }
534: return $Values[-1];
535: }
536:
537: #-------------------------------------------------------
538:
539: =item NUM(range)
540:
541: returns the number of items in the range.
542:
543: =cut
544:
545: #-------------------------------------------------------
546: sub NUM {
547: my $mask=mask(@_);
548: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
549: return $num;
550: }
551:
552: sub BIN {
553: my ($low,$high,$lower,$upper)=@_;
554: my $mask=mask($lower,$upper);
555: my $num=0;
556: foreach (grep /$mask/,keys(%sheet_values)) {
557: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
558: $num++;
559: }
560: }
561: return $num;
562: }
563:
564:
565: #-------------------------------------------------------
566:
567: =item SUM(range)
568:
569: returns the sum of items in the range.
570:
571: =cut
572:
573: #-------------------------------------------------------
574: sub SUM {
575: my $mask=mask(@_);
576: my $sum=0;
577: foreach (grep /$mask/,keys(%sheet_values)) {
578: $sum+=$sheet_values{$_};
579: }
580: return $sum;
581: }
582:
583: #-------------------------------------------------------
584:
585: =item MEAN(range)
586:
587: compute the average of the items in the range.
588:
589: =cut
590:
591: #-------------------------------------------------------
592: sub MEAN {
593: my $mask=mask(@_);
594: my $sum=0; my $num=0;
595: foreach (grep /$mask/,keys(%sheet_values)) {
596: $sum+=$sheet_values{$_};
597: $num++;
598: }
599: if ($num) {
600: return $sum/$num;
601: } else {
602: return undef;
603: }
604: }
605:
606: #-------------------------------------------------------
607:
608: =item STDDEV(range)
609:
610: compute the standard deviation of the items in the range.
611:
612: =cut
613:
614: #-------------------------------------------------------
615: sub STDDEV {
616: my $mask=mask(@_);
617: my $sum=0; my $num=0;
618: foreach (grep /$mask/,keys(%sheet_values)) {
619: $sum+=$sheet_values{$_};
620: $num++;
621: }
622: unless ($num>1) { return undef; }
623: my $mean=$sum/$num;
624: $sum=0;
625: foreach (grep /$mask/,keys(%sheet_values)) {
626: $sum+=($sheet_values{$_}-$mean)**2;
627: }
628: return sqrt($sum/($num-1));
629: }
630:
631: #-------------------------------------------------------
632:
633: =item PROD(range)
634:
635: compute the product of the items in the range.
636:
637: =cut
638:
639: #-------------------------------------------------------
640: sub PROD {
641: my $mask=mask(@_);
642: my $prod=1;
643: foreach (grep /$mask/,keys(%sheet_values)) {
644: $prod*=$sheet_values{$_};
645: }
646: return $prod;
647: }
648:
649: #-------------------------------------------------------
650:
651: =item MAX(range)
652:
653: compute the maximum of the items in the range.
654:
655: =cut
656:
657: #-------------------------------------------------------
658: sub MAX {
659: my $mask=mask(@_);
660: my $max='-';
661: foreach (grep /$mask/,keys(%sheet_values)) {
662: unless ($max) { $max=$sheet_values{$_}; }
663: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
664: }
665: return $max;
666: }
667:
668: #-------------------------------------------------------
669:
670: =item MIN(range)
671:
672: compute the minimum of the items in the range.
673:
674: =cut
675:
676: #-------------------------------------------------------
677: sub MIN {
678: my $mask=mask(@_);
679: my $min='-';
680: foreach (grep /$mask/,keys(%sheet_values)) {
681: unless ($max) { $max=$sheet_values{$_}; }
682: if (($sheet_values{$_}<$min) || ($min eq '-')) {
683: $min=$sheet_values{$_};
684: }
685: }
686: return $min;
687: }
688:
689: #-------------------------------------------------------
690:
691: =item SUMMAX(num,lower,upper)
692:
693: compute the sum of the largest 'num' items in the range from
694: 'lower' to 'upper'
695:
696: =cut
697:
698: #-------------------------------------------------------
699: sub SUMMAX {
700: my ($num,$lower,$upper)=@_;
701: my $mask=mask($lower,$upper);
702: my @inside=();
703: foreach (grep /$mask/,keys(%sheet_values)) {
704: push (@inside,$sheet_values{$_});
705: }
706: @inside=sort(@inside);
707: my $sum=0; my $i;
708: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
709: $sum+=$inside[$i];
710: }
711: return $sum;
712: }
713:
714: #-------------------------------------------------------
715:
716: =item SUMMIN(num,lower,upper)
717:
718: compute the sum of the smallest 'num' items in the range from
719: 'lower' to 'upper'
720:
721: =cut
722:
723: #-------------------------------------------------------
724: sub SUMMIN {
725: my ($num,$lower,$upper)=@_;
726: my $mask=mask($lower,$upper);
727: my @inside=();
728: foreach (grep /$mask/,keys(%sheet_values)) {
729: $inside[$#inside+1]=$sheet_values{$_};
730: }
731: @inside=sort(@inside);
732: my $sum=0; my $i;
733: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
734: $sum+=$inside[$i];
735: }
736: return $sum;
737: }
738:
739: #-------------------------------------------------------
740:
741: =item MINPARM(parametername)
742:
743: Returns the minimum value of the parameters matching the parametername.
744: parametername should be a string such as 'duedate'.
745:
746: =cut
747:
748: #-------------------------------------------------------
749: sub MINPARM {
750: my ($expression) = @_;
751: my $min = undef;
752: study($expression);
753: foreach $parameter (keys(%c)) {
754: next if ($parameter !~ /$expression/);
755: if ((! defined($min)) || ($min > $c{$parameter})) {
756: $min = $c{$parameter}
757: }
758: }
759: return $min;
760: }
761:
762: #-------------------------------------------------------
763:
764: =item MAXPARM(parametername)
765:
766: Returns the maximum value of the parameters matching the input parameter name.
767: parametername should be a string such as 'duedate'.
768:
769: =cut
770:
771: #-------------------------------------------------------
772: sub MAXPARM {
773: my ($expression) = @_;
774: my $max = undef;
775: study($expression);
776: foreach $parameter (keys(%c)) {
777: next if ($parameter !~ /$expression/);
778: if ((! defined($min)) || ($max < $c{$parameter})) {
779: $max = $c{$parameter}
780: }
781: }
782: return $max;
783: }
784:
785: #--------------------------------------------------------
786: sub expandnamed {
787: my $expression=shift;
788: if ($expression=~/^\&/) {
789: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
790: my @vars=split(/\W+/,$formula);
791: my %values=();
792: undef %values;
793: foreach ( @vars ) {
794: my $varname=$_;
795: if ($varname=~/\D/) {
796: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
797: $varname=~s/$var/\(\\w\+\)/g;
798: foreach (keys(%c)) {
799: if ($_=~/$varname/) {
800: $values{$1}=1;
801: }
802: }
803: }
804: }
805: if ($func eq 'EXPANDSUM') {
806: my $result='';
807: foreach (keys(%values)) {
808: my $thissum=$formula;
809: $thissum=~s/$var/$_/g;
810: $result.=$thissum.'+';
811: }
812: $result=~s/\+$//;
813: return $result;
814: } else {
815: return 0;
816: }
817: } else {
818: # it is not a function, so it is a parameter name
819: # We should do the following:
820: # 1. Take the list of parameter names
821: # 2. look through the list for ones that match the parameter we want
822: # 3. If there are no collisions, return the one that matches
823: # 4. If there is a collision, return 'bad parameter name error'
824: my $returnvalue = '';
825: my @matches = ();
826: $#matches = -1;
827: study $expression;
828: foreach $parameter (keys(%c)) {
829: push @matches,$parameter if ($parameter =~ /$expression/);
830: }
831: if ($#matches == 0) {
832: $returnvalue = '$c{\''.$matches[0].'\'}';
833: } elsif ($#matches > 0) {
834: # more than one match. Look for a concise one
835: $returnvalue = "'non-unique parameter name : $expression'";
836: foreach (@matches) {
837: if (/^$expression$/) {
838: $returnvalue = '$c{\''.$_.'\'}';
839: }
840: }
841: } else {
842: $returnvalue = "'bad parameter name : $expression'";
843: }
844: return $returnvalue;
845: }
846: }
847:
848: sub sett {
849: %t=();
850: my $pattern='';
851: if ($sheettype eq 'assesscalc') {
852: $pattern='A';
853: } else {
854: $pattern='[A-Z]';
855: }
856: # Deal with the template row
857: foreach (keys(%f)) {
858: next if ($_!~/template\_(\w)/);
859: my $col=$1;
860: next if ($col=~/^$pattern/);
861: foreach (keys(%f)) {
862: next if ($_!~/A(\d+)/);
863: my $trow=$1;
864: next if (! $trow);
865: # Get the name of this cell
866: my $lb=$col.$trow;
867: # Grab the template declaration
868: $t{$lb}=$f{'template_'.$col};
869: # Replace '#' with the row number
870: $t{$lb}=~s/\#/$trow/g;
871: # Replace '....' with ','
872: $t{$lb}=~s/\.\.+/\,/g;
873: # Replace 'A0' with the value from 'A0'
874: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
875: # Replace parameters
876: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
877: }
878: }
879: # Deal with the normal cells
880: foreach (keys(%f)) {
881: if (exists($f{$_}) && ($_!~/template\_/)) {
882: my $matches=($_=~/^$pattern(\d+)/);
883: if (($matches) && ($1)) {
884: unless ($f{$_}=~/^\!/) {
885: $t{$_}=$c{$_};
886: }
887: } else {
888: $t{$_}=$f{$_};
889: $t{$_}=~s/\.\.+/\,/g;
890: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
891: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
892: }
893: }
894: }
895: # For inserted lines, [B-Z] is also valid
896: unless ($sheettype eq 'assesscalc') {
897: foreach (keys(%f)) {
898: if ($_=~/[B-Z](\d+)/) {
899: if ($f{'A'.$1}=~/^[\~\-]/) {
900: $t{$_}=$f{$_};
901: $t{$_}=~s/\.\.+/\,/g;
902: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
903: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
904: }
905: }
906: }
907: }
908: # For some reason 'A0' gets special treatment... This seems superfluous
909: # but I imagine it is here for a reason.
910: $t{'A0'}=$f{'A0'};
911: $t{'A0'}=~s/\.\.+/\,/g;
912: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
913: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
914: }
915:
916: sub calc {
917: undef %sheet_values;
918: &sett();
919: my $notfinished=1;
920: my $lastcalc='';
921: my $depth=0;
922: while ($notfinished) {
923: $notfinished=0;
924: foreach (keys(%t)) {
925: my $old=$sheet_values{$_};
926: $sheet_values{$_}=eval $t{$_};
927: if ($@) {
928: undef %sheet_values;
929: return $_.': '.$@;
930: }
931: if ($sheet_values{$_} ne $old) { $notfinished=1; $lastcalc=$_; }
932: }
933: $depth++;
934: if ($depth>100) {
935: undef %sheet_values;
936: return $lastcalc.': Maximum calculation depth exceeded';
937: }
938: }
939: return '';
940: }
941:
942: # ------------------------------------------- End of "Inside of the safe space"
943: ENDDEFS
944: $safeeval->reval($code);
945: return $safeeval;
946: }
947:
948: #
949: # This is actually used for the student spreadsheet, not the assessment sheet
950: # Do not be fooled by the name!
951: #
952: sub templaterow {
953: my $sheet = shift;
954: my @cols=();
955: $cols[0]='<b><font size=+1>Template</font></b>';
956: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
957: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
958: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
959: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
960: my $fm=$sheet->{'f'}->{'template_'.$_};
961: $fm=~s/[\'\"]/\&\#34;/g;
962: push(@cols,"'template_$_','$fm'".'___eq___'.$fm);
963: }
964: return @cols;
965: }
966:
967:
968: sub outrowassess {
969: # $n is the current row number
970: my $sheet = shift;
971: my $n=shift;
972: my $csv = $ENV{'form.showcsv'};
973: my @cols=();
974: if ($n) {
975: my ($usy,$ufn)=split(/__&&&\__/,$sheet->{'f'}->{'A'.$n});
976: if ($sheet->{'rowlabel'}->{$usy}) {
977: $cols[0]=&format_rowlabel($sheet->{'rowlabel'}->{$usy});
978: if (! $csv) {
979: $cols[0].='<br>'.
980: '<select name="sel_'.$n.'" onChange="changesheet('.$n.')">'.
981: '<option name="default">Default</option>';
982: }
983: } else {
984: $cols[0]='';
985: }
986: if (! $csv) {
987: foreach (@{$sheet->{'othersheets'}}) {
988: $cols[0].='<option name="'.$_.'"';
989: if ($ufn eq $_) {
990: $cols[0].=' selected';
991: }
992: $cols[0].='>'.$_.'</option>';
993: }
994: $cols[0].='</select>';
995: }
996: } else {
997: $cols[0]='<b><font size=+1>Export</font></b>';
998: }
999: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1000: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1001: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1002: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1003: my $fm=$sheet->{'f'}->{$_.$n};
1004: $fm=~s/[\'\"]/\&\#34;/g;
1005: push(@cols,"'$_$n','$fm'".'___eq___'.$sheet->{'values'}->{$_.$n});
1006: }
1007: return @cols;
1008: }
1009:
1010: sub outrow {
1011: my $sheet=shift;
1012: my $n=shift;
1013: my @cols=();
1014: if ($n) {
1015: $cols[0]=&format_rowlabel($sheet->{'rowlabel'}->{$sheet->{'f'}->{'A'.$n}});
1016: } else {
1017: $cols[0]='<b><font size=+1>Export</font></b>';
1018: }
1019: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1020: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1021: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1022: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1023: my $fm=$sheet->{'f'}->{$_.$n};
1024: $fm=~s/[\'\"]/\&\#34;/g;
1025: push(@cols,"'$_$n','$fm'".'___eq___'.$sheet->{'values'}->{$_.$n});
1026: }
1027: return @cols;
1028: }
1029:
1030: # ------------------------------------------------ Add or change formula values
1031: sub setformulas {
1032: my ($sheet)=shift;
1033: %{$sheet->{'safe'}->varglob('f')}=%{$sheet->{'f'}};
1034: }
1035:
1036: # ------------------------------------------------ Add or change formula values
1037: sub setconstants {
1038: my ($sheet)=shift;
1039: my ($constants) = @_;
1040: if (! ref($constants)) {
1041: my %tmp = @_;
1042: $constants = \%tmp;
1043: }
1044: $sheet->{'constants'} = $constants;
1045: &Apache::lonnet::logthis("----------------------------------");
1046: foreach my $c (keys(%{$sheet->{'constants'}})) {
1047: &Apache::lonnet::logthis('constant '.$c.' = '.
1048: $sheet->{'constants'}->{$c});
1049: }
1050: return %{$sheet->{'safe'}->varglob('c')}=%{$sheet->{'constants'}};
1051: }
1052:
1053: # --------------------------------------------- Set names of other spreadsheets
1054: sub setothersheets {
1055: my $sheet = shift;
1056: my @othersheets = @_;
1057: $sheet->{'othersheets'} = \@othersheets;
1058: @{$sheet->{'safe'}->varglob('os')}=@othersheets;
1059: return;
1060: }
1061:
1062: # ------------------------------------------------ Add or change formula values
1063: sub setrowlabels {
1064: my $sheet=shift;
1065: my ($rowlabel) = @_;
1066: if (! ref($rowlabel)) {
1067: my %tmp = @_;
1068: $rowlabel = \%tmp;
1069: }
1070: $sheet->{'rowlabel'}=$rowlabel;
1071: }
1072:
1073: # ------------------------------------------------------- Calculate spreadsheet
1074: sub calcsheet {
1075: my $sheet=shift;
1076: my $result = $sheet->{'safe'}->reval('&calc();');
1077: %{$sheet->{'values'}} = %{$sheet->{'safe'}->varglob('sheet_values')};
1078: return $result;
1079: }
1080:
1081: # ---------------------------------------------------------------- Get formulas
1082: sub getformulas {
1083: my $sheet = shift;
1084: return %{$sheet->{'safe'}->varglob('f')};
1085: }
1086:
1087: # ----------------------------------------------------- Get value of $f{'A'.$n}
1088: sub getfa {
1089: my $sheet = shift;
1090: my ($n)=@_;
1091: return $sheet->{'safe'}->reval('$f{"A'.$n.'"}');
1092: }
1093:
1094: # ------------------------------------------------------------- Export of A-row
1095: sub exportdata {
1096: my $sheet=shift;
1097: my @exportarray=();
1098: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1099: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1100: push(@exportarray,$sheet->{'values'}->{$_.'0'});
1101: }
1102: return @exportarray;
1103: }
1104:
1105: # ========================================================== End of Spreadsheet
1106: # =============================================================================
1107:
1108: #
1109: # Procedures for screen output
1110: #
1111: # --------------------------------------------- Produce output row n from sheet
1112:
1113: sub rown {
1114: my ($sheet,$n)=@_;
1115: my $defaultbg;
1116: my $rowdata='';
1117: my $dataflag=0;
1118: unless ($n eq '-') {
1119: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1120: } else {
1121: $defaultbg='#E0FF';
1122: }
1123: unless ($ENV{'form.showcsv'}) {
1124: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1125: } else {
1126: $rowdata.="\n".'"'.$n.'"';
1127: }
1128: my $showf=0;
1129: #
1130: # Determine how many pink (uneditable) cells there are in this sheet.
1131: my $maxred=1;
1132: my $sheettype=$sheet->{'sheettype'};
1133: if ($sheettype eq 'studentcalc') {
1134: $maxred=26;
1135: } elsif ($sheettype eq 'assesscalc') {
1136: $maxred=1;
1137: } else {
1138: $maxred=26;
1139: }
1140: $maxred=1 if (&getfa($sheet,$n)=~/^[\~\-]/);
1141: #
1142: # Get the proper row
1143: my @rowdata;
1144: if ($n eq '-') {
1145: @rowdata = &templaterow($sheet);
1146: $n=-1;
1147: $dataflag=1;
1148: } elsif ($sheettype eq 'studentcalc') {
1149: @rowdata = &outrowassess($sheet,$n);
1150: } else {
1151: @rowdata = &outrow($sheet,$n);
1152: }
1153: #
1154: foreach (@rowdata) {
1155: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1156: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1157: if ((($vl ne '') || ($vl eq '0')) &&
1158: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1159: if ($showf==0) { $vl=$_; }
1160: unless ($ENV{'form.showcsv'}) {
1161: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1162: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1163: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1164: if ($vl eq '') {
1165: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1166: }
1167: $rowdata.='<td bgcolor='.$bgcolor.'>';
1168: if ($ENV{'request.role'} =~ /^st\./) {
1169: $rowdata.=$vl;
1170: } else {
1171: $rowdata.='<a href="javascript:celledit('.$fm.');">'.
1172: $vl.'</a>';
1173: }
1174: $rowdata.='</td>';
1175: } else {
1176: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1177: }
1178: } else {
1179: $rowdata.=',"'.$vl.'"';
1180: }
1181: $showf++;
1182: } # End of foreach($safeval...)
1183: if ($ENV{'form.showall'} || ($dataflag)) {
1184: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1185: } else {
1186: return '';
1187: }
1188: }
1189:
1190: # ------------------------------------------------------------- Print out sheet
1191:
1192: sub outsheet {
1193: my ($r,$sheet)=@_;
1194: my $maxred = 26; # The maximum number of cells to show as
1195: # red (uneditable)
1196: # To make student sheets uneditable could we
1197: # set $maxred = 52?
1198: #
1199: my $realm='Course'; # 'assessment', 'user', or 'course' sheet
1200: if ($sheet->{'sheettype'} eq 'assesscalc') {
1201: $maxred=1;
1202: $realm='Assessment';
1203: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1204: $maxred=26;
1205: $realm='User';
1206: }
1207: #
1208: # Column label
1209: my $tabledata;
1210: if ($ENV{'form.showcsv'}) {
1211: $tabledata='<pre>';
1212: } else {
1213: $tabledata='<table border=2><tr><th colspan=2 rowspan=2>'.
1214: '<font size=+2>'.$realm.'</font></th>'.
1215: '<td bgcolor=#FFDDDD colspan='.$maxred.
1216: '><b><font size=+1>Import</font></b></td>'.
1217: '<td colspan='.(52-$maxred).
1218: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1219: my $showf=0;
1220: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1221: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1222: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1223: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1224: $showf++;
1225: if ($showf<=$maxred) {
1226: $tabledata.='<td bgcolor="#FFDDDD">';
1227: } else {
1228: $tabledata.='<td>';
1229: }
1230: $tabledata.="<b><font size=+1>$_</font></b></td>";
1231: }
1232: $tabledata.='</tr>'.&rown($sheet,'-').
1233: &rown($sheet,0);
1234: }
1235: $r->print($tabledata);
1236: #
1237: # Prepare to output rows
1238: my $row;
1239: #
1240: my @sortby=();
1241: my @sortidx=();
1242: for ($row=1;$row<=$sheet->{'maxrow'};$row++) {
1243: push (@sortby, $sheet->{'safe'}->reval('$f{"A'.$row.'"}'));
1244: push (@sortidx, $row-1);
1245: }
1246: @sortidx=sort { lc($sortby[$a]) cmp lc($sortby[$b]); } @sortidx;
1247: #
1248: # Determine the type of child spreadsheets
1249: my $what='Student';
1250: if ($sheet->{'sheettype'} eq 'assesscalc') {
1251: $what='Item';
1252: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1253: $what='Assessment';
1254: }
1255: #
1256: # Loop through the rows and output them one at a time
1257: my $n=0;
1258: for ($row=0;$row<$sheet->{'maxrow'};$row++) {
1259: my $thisrow=&rown($sheet,$sortidx[$row]+1);
1260: if ($thisrow) {
1261: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1262: $r->print("</table>\n<br>\n");
1263: $r->rflush();
1264: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1265: $r->print('<td>'.
1266: join('</td><td>',
1267: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
1268: 'abcdefghijklmnopqrstuvwxyz'))).
1269: "</td></tr>\n");
1270: }
1271: $n++;
1272: $r->print($thisrow);
1273: }
1274: }
1275: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1276: }
1277:
1278: #
1279: # ----------------------------------------------- Read list of available sheets
1280: #
1281: sub othersheets {
1282: my ($sheet,$stype)=@_;
1283: $stype = $sheet->{'sheettype'} if (! defined($stype));
1284: #
1285: my $cnum = $sheet->{'cnum'};
1286: my $cdom = $sheet->{'cdom'};
1287: my $chome = $sheet->{'chome'};
1288: #
1289: my @alternatives=();
1290: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1291: my ($tmp) = keys(%results);
1292: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1293: @alternatives = sort (keys(%results));
1294: }
1295: return @alternatives;
1296: }
1297:
1298:
1299: #
1300: # -------------------------------------- Parse a spreadsheet
1301: #
1302: sub parse_sheet {
1303: # $sheetxml is a scalar reference or a scalar
1304: my ($sheetxml) = @_;
1305: if (! ref($sheetxml)) {
1306: my $tmp = $sheetxml;
1307: $sheetxml = \$tmp;
1308: }
1309: my %f;
1310: my $parser=HTML::TokeParser->new($sheetxml);
1311: my $token;
1312: while ($token=$parser->get_token) {
1313: if ($token->[0] eq 'S') {
1314: if ($token->[1] eq 'field') {
1315: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1316: $parser->get_text('/field');
1317: }
1318: if ($token->[1] eq 'template') {
1319: $f{'template_'.$token->[2]->{'col'}}=
1320: $parser->get_text('/template');
1321: }
1322: }
1323: }
1324: return \%f;
1325: }
1326:
1327: #
1328: # -------------------------------------- Read spreadsheet formulas for a course
1329: #
1330: sub readsheet {
1331: my ($sheet,$fn)=@_;
1332: #
1333: my $stype = $sheet->{'sheettype'};
1334: my $cnum = $sheet->{'cnum'};
1335: my $cdom = $sheet->{'cdom'};
1336: my $chome = $sheet->{'chome'};
1337: #
1338: if (! defined($fn)) {
1339: # There is no filename. Look for defaults in course and global, cache
1340: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1341: my %tmphash = &Apache::lonnet::get('environment',
1342: ['spreadsheet_default_'.$stype],
1343: $cdom,$cnum);
1344: my ($tmp) = keys(%tmphash);
1345: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1346: $fn = 'default_'.$stype;
1347: } else {
1348: $fn = $tmphash{'spreadsheet_default_'.$stype};
1349: }
1350: unless (($fn) && ($fn!~/^error\:/)) {
1351: $fn='default_'.$stype;
1352: }
1353: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1354: }
1355: }
1356: # $fn now has a value
1357: $sheet->{'filename'} = $fn;
1358: # see if sheet is cached
1359: my $fstring='';
1360: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1361: my %tmp = split(/___;___/,$fstring);
1362: $sheet->{'f'} = \%tmp;
1363: &setformulas($sheet);
1364: } else {
1365: # Not cached, need to read
1366: my %f=();
1367: if ($fn=~/^default\_/) {
1368: my $sheetxml='';
1369: my $fh;
1370: my $dfn=$fn;
1371: $dfn=~s/\_/\./g;
1372: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1373: $sheetxml=join('',<$fh>);
1374: } else {
1375: $sheetxml='<field row="0" col="A">"Error"</field>';
1376: }
1377: %f=%{&parse_sheet(\$sheetxml)};
1378: } elsif($fn=~/\/*\.spreadsheet$/) {
1379: my $sheetxml=&Apache::lonnet::getfile
1380: (&Apache::lonnet::filelocation('',$fn));
1381: if ($sheetxml == -1) {
1382: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1383: .$fn.'"</field>';
1384: }
1385: %f=%{&parse_sheet(\$sheetxml)};
1386: } else {
1387: my $sheet='';
1388: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1389: my ($tmp) = keys(%tmphash);
1390: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1391: foreach (keys(%tmphash)) {
1392: $f{$_}=$tmphash{$_};
1393: }
1394: }
1395: }
1396: # Cache and set
1397: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1398: $sheet->{'f'}=\%f;
1399: &setformulas($sheet);
1400: }
1401: }
1402:
1403: # -------------------------------------------------------- Make new spreadsheet
1404: sub makenewsheet {
1405: my ($uname,$udom,$stype,$usymb)=@_;
1406: my $sheet={};
1407: $sheet->{'uname'} = $uname;
1408: $sheet->{'udom'} = $udom;
1409: $sheet->{'sheettype'} = $stype;
1410: $sheet->{'usymb'} = $usymb;
1411: $sheet->{'cid'} = $ENV{'request.course.id'};
1412: $sheet->{'csec'} = $Section{$uname.':'.$udom};
1413: $sheet->{'coursefilename'} = $ENV{'request.course.fn'};
1414: $sheet->{'cnum'} = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1415: $sheet->{'cdom'} = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1416: $sheet->{'chome'} = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1417: $sheet->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
1418: #
1419: #
1420: $sheet->{'f'} = {};
1421: $sheet->{'constants'} = {};
1422: $sheet->{'othersheets'} = [];
1423: $sheet->{'rowlabel'} = {};
1424: #
1425: #
1426: $sheet->{'safe'}=&initsheet($sheet->{'sheettype'});
1427: #
1428: # Place all the %$sheet items into the safe space except the safe space
1429: # itself
1430: my $initstring = '';
1431: foreach (qw/uname udom sheettype usymb cid csec coursefilename
1432: cnum cdom chome uhome/) {
1433: $initstring.= qq{\$$_="$sheet->{$_}";};
1434: }
1435: $sheet->{'safe'}->reval($initstring);
1436: return $sheet;
1437: }
1438:
1439: # ------------------------------------------------------------ Save spreadsheet
1440: sub writesheet {
1441: my ($sheet,$makedef)=@_;
1442: my $cid=$sheet->{'cid'};
1443: if (&Apache::lonnet::allowed('opa',$cid)) {
1444: my %f=&getformulas($sheet);
1445: my $stype= $sheet->{'sheettype'};
1446: my $cnum = $sheet->{'cnum'};
1447: my $cdom = $sheet->{'cdom'};
1448: my $chome= $sheet->{'chome'};
1449: my $fn = $sheet->{'filename'};
1450: # Cache new sheet
1451: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1452: # Write sheet
1453: my $sheetdata='';
1454: foreach (keys(%f)) {
1455: unless ($f{$_} eq 'import') {
1456: $sheetdata.=&Apache::lonnet::escape($_).'='.
1457: &Apache::lonnet::escape($f{$_}).'&';
1458: }
1459: }
1460: $sheetdata=~s/\&$//;
1461: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1462: $sheetdata,$chome);
1463: if ($reply eq 'ok') {
1464: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1465: $stype.'_spreadsheets:'.
1466: &Apache::lonnet::escape($fn).
1467: '='.$ENV{'user.name'}.'@'.
1468: $ENV{'user.domain'},
1469: $chome);
1470: if ($reply eq 'ok') {
1471: if ($makedef) {
1472: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1473: ':environment:'.
1474: 'spreadsheet_default_'.
1475: $stype.'='.
1476: &Apache::lonnet::escape($fn),
1477: $chome);
1478: }
1479: return $reply;
1480: }
1481: return $reply;
1482: }
1483: return $reply;
1484: }
1485: return 'unauthorized';
1486: }
1487:
1488: # ----------------------------------------------- Make a temp copy of the sheet
1489: # "Modified workcopy" - interactive only
1490: #
1491: sub tmpwrite {
1492: my ($sheet) = @_;
1493: my $fn=$ENV{'user.name'}.'_'.
1494: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1495: $sheet->{'filename'};
1496: $fn=~s/\W/\_/g;
1497: $fn=$tmpdir.$fn.'.tmp';
1498: my $fh;
1499: if ($fh=Apache::File->new('>'.$fn)) {
1500: print $fh join("\n",&getformulas($sheet));
1501: }
1502: }
1503:
1504: # ---------------------------------------------------------- Read the temp copy
1505: sub tmpread {
1506: my ($sheet,$nfield,$nform)=@_;
1507: my $fn=$ENV{'user.name'}.'_'.
1508: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1509: $sheet->{'filename'};
1510: $fn=~s/\W/\_/g;
1511: $fn=$tmpdir.$fn.'.tmp';
1512: my $fh;
1513: my %fo=();
1514: my $countrows=0;
1515: if ($fh=Apache::File->new($fn)) {
1516: my $name;
1517: while ($name=<$fh>) {
1518: chomp($name);
1519: my $value=<$fh>;
1520: chomp($value);
1521: $fo{$name}=$value;
1522: if ($name=~/^A(\d+)$/) {
1523: if ($1>$countrows) {
1524: $countrows=$1;
1525: }
1526: }
1527: }
1528: }
1529: if ($nform eq 'changesheet') {
1530: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1531: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1532: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1533: }
1534: } elsif ($nfield eq 'insertrow') {
1535: $countrows++;
1536: my $newrow=substr('000000'.$countrows,-7);
1537: if ($nform eq 'top') {
1538: $fo{'A'.$countrows}='--- '.$newrow;
1539: } else {
1540: $fo{'A'.$countrows}='~~~ '.$newrow;
1541: }
1542: } else {
1543: if ($nfield) { $fo{$nfield}=$nform; }
1544: }
1545: $sheet->{'f'}=\%fo;
1546: &setformulas($sheet);
1547: }
1548:
1549: ##################################################
1550: ##################################################
1551:
1552: =pod
1553:
1554: =item &parmval()
1555:
1556: Determine the value of a parameter.
1557:
1558: Inputs: $what, the parameter needed, $sheet, the safe space
1559:
1560: Returns: The value of a parameter, or '' if none.
1561:
1562: This function cascades through the possible levels searching for a value for
1563: a parameter. The levels are checked in the following order:
1564: user, course (at section level and course level), map, and lonnet::metadata.
1565: This function uses %parmhash, which must be tied prior to calling it.
1566: This function also requires %courseopt and %useropt to be initialized for
1567: this user and course.
1568:
1569: =cut
1570:
1571: ##################################################
1572: ##################################################
1573: sub parmval {
1574: my ($what,$sheet)=@_;
1575: my $symb = $sheet->{'usymb'};
1576: unless ($symb) { return ''; }
1577: #
1578: my $cid = $sheet->{'cid'};
1579: my $csec = $sheet->{'csec'};
1580: my $uname = $sheet->{'uname'};
1581: my $udom = $sheet->{'udom'};
1582: my $result='';
1583: #
1584: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1585: # Cascading lookup scheme
1586: my $rwhat=$what;
1587: $what =~ s/^parameter\_//;
1588: $what =~ s/\_([^\_]+)$/\.$1/;
1589: #
1590: my $symbparm = $symb.'.'.$what;
1591: my $mapparm = $mapname.'___(all).'.$what;
1592: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
1593: #
1594: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
1595: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
1596: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
1597: #
1598: my $courselevel = $usercourseprefix.'.'.$what;
1599: my $courselevelr = $usercourseprefix.'.'.$symbparm;
1600: my $courselevelm = $usercourseprefix.'.'.$mapparm;
1601: # fourth, check user
1602: if (defined($uname)) {
1603: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
1604: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
1605: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
1606: }
1607: # third, check course
1608: if (defined($csec)) {
1609: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
1610: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
1611: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
1612: }
1613: #
1614: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
1615: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
1616: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
1617: # second, check map parms
1618: my $thisparm = $parmhash{$symbparm};
1619: return $thisparm if (defined($thisparm));
1620: # first, check default
1621: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1622: }
1623:
1624: sub format_rowlabel {
1625: my $rowlabel = shift;
1626: my ($type,$labeldata) = split(':',$rowlabel,2);
1627: my $result = '';
1628: if ($type eq 'symb') {
1629: my ($symb,$uname,$udom,$title) = split(':',$labeldata);
1630: $symb = &Apache::lonnet::unescape($symb);
1631: if ($ENV{'form.showcsv'}) {
1632: $result = $title;
1633: } else {
1634: $result = '<a href="/adm/assesscalc?usmb='.$symb.
1635: '&uname='.$uname.'&udom='.$udom.'">'.$title.'</a>';
1636: }
1637: } elsif ($type eq 'student') {
1638: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
1639: if ($ENV{'form.showcsv'}) {
1640: $result = '"'.
1641: join('","',($sname,$sdom,$fullname,$section,$id).'"');
1642: } else {
1643: $result ='<a href="/adm/studentcalc?uname='.$sname.
1644: '&udom='.$sdom.'">';
1645: $result.=$section.' '.$id." ".$fullname.'</a>';
1646: }
1647: } elsif ($type eq 'parameter') {
1648: if ($ENV{'form.showcsv'}) {
1649: $result = $labeldata =~ s/<br>//g;
1650: } else {
1651: $result = $labeldata;
1652: }
1653: } else {
1654: &Apache::lonnet::logthis("lonspreadsheet:bogus rowlabel type: $type");
1655: }
1656: return $result;
1657: }
1658:
1659: # ---------------------------------------------- Update rows for course listing
1660: sub updateclasssheet {
1661: my ($sheet) = @_;
1662: my $cnum =$sheet->{'cnum'};
1663: my $cdom =$sheet->{'cdom'};
1664: my $cid =$sheet->{'cid'};
1665: my $chome =$sheet->{'chome'};
1666: #
1667: %Section = ();
1668:
1669: #
1670: # Read class list and row labels
1671: my $classlist = &Apache::loncoursedata::get_classlist();
1672: if (! defined($classlist)) {
1673: return 'Could not access course classlist';
1674: }
1675: #
1676: my %currentlist=();
1677: foreach my $student (keys(%$classlist)) {
1678: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
1679: $fullname,$status) = @{$classlist->{$student}};
1680: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
1681: $currentlist{$student}=join(':',('student',$studentName,
1682: $studentDomain,$fullname,
1683: $studentSection,$id));
1684: }
1685: }
1686: #
1687: # Find discrepancies between the course row table and this
1688: #
1689: my %f=&getformulas($sheet);
1690: my $changed=0;
1691: #
1692: $sheet->{'maxrow'}=0;
1693: my %existing=();
1694: #
1695: # Now obsolete rows
1696: foreach (keys(%f)) {
1697: if ($_=~/^A(\d+)/) {
1698: if ($1 > $sheet->{'maxrow'}) {
1699: $sheet->{'maxrow'}= $1;
1700: }
1701: $existing{$f{$_}}=1;
1702: unless ((defined($currentlist{$f{$_}})) || (!$1) ||
1703: ($f{$_}=~/^(~~~|---)/)) {
1704: $f{$_}='!!! Obsolete';
1705: $changed=1;
1706: }
1707: }
1708: }
1709: #
1710: # New and unknown keys
1711: foreach (sort keys(%currentlist)) {
1712: unless ($existing{$_}) {
1713: $changed=1;
1714: $sheet->{'maxrow'}++;
1715: $f{'A'.$sheet->{'maxrow'}}=$_;
1716: }
1717: }
1718: if ($changed) {
1719: $sheet->{'f'} = \%f;
1720: &setformulas($sheet,%f);
1721: }
1722: #
1723: &setrowlabels($sheet,\%currentlist);
1724: }
1725:
1726: # ----------------------------------- Update rows for student and assess sheets
1727: sub updatestudentassesssheet {
1728: my ($sheet) = @_;
1729: my %bighash;
1730: my $stype=$sheet->{'sheettype'};
1731: my $uname=$sheet->{'uname'};
1732: my $udom =$sheet->{'udom'};
1733: $sheet->{'rowlabel'} = {};
1734: if ($updatedata
1735: {$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}) {
1736: %{$sheet->{'rowlabel'}}=split(/___;___/,
1737: $updatedata{$ENV{'request.course.fn'}.
1738: '_'.$stype.'_'.$uname.'_'.$udom});
1739: } else {
1740: # Tie hash
1741: tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1742: &GDBM_READER(),0640);
1743: if (! tied(%bighash)) {
1744: return 'Could not access course data';
1745: }
1746: # Get all assessments
1747: #
1748: # allkeys is used in the assessment sheets to provide labels
1749: # for the parameters.
1750: my %allkeys=('timestamp' =>
1751: 'parameter:Timestamp of Last Transaction<br>timestamp',
1752: 'subnumber' =>
1753: 'parameter:Number of Submissions<br>subnumber',
1754: 'tutornumber' =>
1755: 'parameter:Number of Tutor Responses<br>tutornumber',
1756: 'totalpoints' =>
1757: 'parameter:Total Points Granted<br>totalpoints');
1758: my $adduserstr='';
1759: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})){
1760: $adduserstr='&uname='.$uname.'&udom='.$udom;
1761: }
1762: #
1763: # allassess holds the descriptions of all assessments
1764: my %allassess;
1765: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
1766: my $symb = '_'.lc($_);
1767: $allassess{$symb} = join(':',('symb',$symb,$uname,$udom,$_));
1768: }
1769: while (($_,undef) = each(%bighash)) {
1770: next if ($_!~/^src\_(\d+)\.(\d+)$/);
1771: my $mapid=$1;
1772: my $resid=$2;
1773: my $id=$mapid.'.'.$resid;
1774: my $srcf=$bighash{$_};
1775: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1776: my $symb=
1777: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1778: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
1779: $allassess{$symb}='symb:'.&Apache::lonnet::escape($symb).':'
1780: .$uname.':'.$udom.':'.$bighash{'title_'.$id};
1781: next if ($stype ne 'assesscalc');
1782: foreach my $key (split(/\,/,
1783: &Apache::lonnet::metadata($srcf,'keys')
1784: )) {
1785: next if ($key !~ /^(stores|parameter)_/);
1786: my $display=
1787: &Apache::lonnet::metadata($srcf,$key.'.display');
1788: unless ($display) {
1789: $display.=
1790: &Apache::lonnet::metadata($srcf,$key.'.name');
1791: }
1792: $display.='<br>'.$key;
1793: $allkeys{$key}='parameter:'.$display;
1794: } # end of foreach
1795: }
1796: } # end of foreach (keys(%bighash))
1797: untie(%bighash);
1798: #
1799: # %allkeys has a list of storage and parameter displays by unikey
1800: # %allassess has a list of all resource displays by symb
1801: #
1802: if ($stype eq 'assesscalc') {
1803: $sheet->{'rowlabel'} = \%allkeys;
1804: } elsif ($stype eq 'studentcalc') {
1805: $sheet->{'rowlabel'} = \%allassess;
1806: }
1807: $updatedata{$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}=
1808: join('___;___',%{$sheet->{'rowlabel'}});
1809: # Get current from cache
1810: }
1811: # Find discrepancies between the course row table and this
1812: #
1813: my %f=&getformulas($sheet);
1814: my $changed=0;
1815:
1816: $sheet->{'maxrow'} = 0;
1817: my %existing=();
1818: # Now obsolete rows
1819: foreach (keys(%f)) {
1820: next if ($_!~/^A(\d+)/);
1821: if ($1 > $sheet->{'maxrow'}) {
1822: $sheet->{'maxrow'} = $1;
1823: }
1824: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1825: $existing{$usy}=1;
1826: unless ((exists($sheet->{'rowlabel'}->{$usy}) &&
1827: (defined($sheet->{'rowlabel'}->{$usy})) || (!$1) ||
1828: ($f{$_}=~/^(~~~|---)/))){
1829: $f{$_}='!!! Obsolete';
1830: $changed=1;
1831: } elsif ($ufn) {
1832: $sheet->{'rowlabel'}->{$usy}
1833: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1834: }
1835: }
1836: # New and unknown keys
1837: foreach (keys(%{$sheet->{'rowlabel'}})) {
1838: unless ($existing{$_}) {
1839: $changed=1;
1840: $sheet->{'maxrow'}++;
1841: $f{'A'.$sheet->{'maxrow'}}=$_;
1842: }
1843: }
1844: if ($changed) {
1845: $sheet->{'f'} = \%f;
1846: &setformulas($sheet);
1847: }
1848: #
1849: undef %existing;
1850: }
1851:
1852: # ------------------------------------------------ Load data for one assessment
1853:
1854: sub loadstudent {
1855: my ($sheet)=@_;
1856: my %c=();
1857: my %f=&getformulas($sheet);
1858: $cachedassess=$sheet->{'uname'}.':'.$sheet->{'udom'};
1859: # Get ALL the student preformance data
1860: my @tmp = &Apache::lonnet::dump($sheet->{'cid'},
1861: $sheet->{'udom'},
1862: $sheet->{'uname'},
1863: undef);
1864: if ($tmp[0] !~ /^error:/) {
1865: %cachedstores = @tmp;
1866: }
1867: undef @tmp;
1868: #
1869: my @assessdata=();
1870: foreach (keys(%f)) {
1871: next if ($_!~/^A(\d+)/);
1872: my $row=$1;
1873: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1874: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1875: @assessdata=&exportsheet($sheet->{'uname'},
1876: $sheet->{'udom'},
1877: 'assesscalc',$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: $cachedassess='';
1896: undef %cachedstores;
1897: $sheet->{'f'} = \%f;
1898: &setformulas($sheet);
1899: &setconstants($sheet,\%c);
1900: }
1901:
1902: # --------------------------------------------------- Load data for one student
1903: #
1904: sub loadcourse {
1905: my ($sheet,$r)=@_;
1906: my %c=();
1907: my %f=&getformulas($sheet);
1908: my $total=0;
1909: foreach (keys(%f)) {
1910: if ($_=~/^A(\d+)/) {
1911: unless ($f{$_}=~/^[\!\~\-]/) { $total++; }
1912: }
1913: }
1914: my $now=0;
1915: my $since=time;
1916: $r->print(<<ENDPOP);
1917: <script>
1918: popwin=open('','popwin','width=400,height=100');
1919: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1920: '<h3>Spreadsheet Calculation Progress</h3>'+
1921: '<form name=popremain>'+
1922: '<input type=text size=35 name=remaining value=Starting></form>'+
1923: '</body></html>');
1924: popwin.document.close();
1925: </script>
1926: ENDPOP
1927: $r->rflush();
1928: foreach (keys(%f)) {
1929: next if ($_!~/^A(\d+)/);
1930: my $row=$1;
1931: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1932: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1933: 'studentcalc');
1934: undef %userrdatas;
1935: $now++;
1936: $r->print('<script>popwin.document.popremain.remaining.value="'.
1937: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1938: ' secs remaining";</script>');
1939: $r->rflush();
1940: #
1941: my $index=0;
1942: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1943: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1944: if ($studentdata[$index]) {
1945: my $col=$_;
1946: if ($studentdata[$index]=~/\D/) {
1947: $c{$col.$row}="'".$studentdata[$index]."'";
1948: } else {
1949: $c{$col.$row}=$studentdata[$index];
1950: }
1951: unless ($col eq 'A') {
1952: $f{$col.$row}='import';
1953: }
1954: $index++;
1955: }
1956: }
1957: }
1958: $sheet->{'f'}=\%f;
1959: &setformulas($sheet);
1960: &setconstants($sheet,\%c);
1961: $r->print('<script>popwin.close()</script>');
1962: $r->rflush();
1963: }
1964:
1965: # ------------------------------------------------ Load data for one assessment
1966: #
1967: sub loadassessment {
1968: my ($sheet)=@_;
1969:
1970: my $uhome = $sheet->{'uhome'};
1971: my $uname = $sheet->{'uname'};
1972: my $udom = $sheet->{'udom'};
1973: my $symb = $sheet->{'usymb'};
1974: my $cid = $sheet->{'cid'};
1975: my $cnum = $sheet->{'cnum'};
1976: my $cdom = $sheet->{'cdom'};
1977: my $chome = $sheet->{'chome'};
1978:
1979: my $namespace;
1980: unless ($namespace=$cid) { return ''; }
1981: # Get stored values
1982: my %returnhash=();
1983: if ($cachedassess eq $uname.':'.$udom) {
1984: #
1985: # get data out of the dumped stores
1986: #
1987: my $version=$cachedstores{'version:'.$symb};
1988: my $scope;
1989: for ($scope=1;$scope<=$version;$scope++) {
1990: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
1991: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1992: }
1993: }
1994: } else {
1995: #
1996: # restore individual
1997: #
1998: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
1999: for (my $version=1;$version<=$returnhash{'version'};$version++) {
2000: foreach (split(/\:/,$returnhash{$version.':keys'})) {
2001: $returnhash{$_}=$returnhash{$version.':'.$_};
2002: }
2003: }
2004: }
2005: #
2006: # returnhash now has all stores for this resource
2007: # convert all "_" to "." to be able to use libraries, multiparts, etc
2008: #
2009: # This is dumb. It is also necessary :(
2010: my @oldkeys=keys %returnhash;
2011: #
2012: foreach my $name (@oldkeys) {
2013: my $value=$returnhash{$name};
2014: delete $returnhash{$name};
2015: $name=~s/\_/\./g;
2016: $returnhash{$name}=$value;
2017: }
2018: # initialize coursedata and userdata for this user
2019: undef %courseopt;
2020: undef %useropt;
2021:
2022: my $userprefix=$uname.'_'.$udom.'_';
2023:
2024: unless ($uhome eq 'no_host') {
2025: # Get coursedata
2026: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
2027: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
2028: $courserdatas{$cid}=\%Tmp;
2029: $courserdatas{$cid.'.last_cache'}=time;
2030: }
2031: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
2032: $courseopt{$userprefix.$name}=$value;
2033: }
2034: # Get userdata (if present)
2035: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
2036: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
2037: $userrdatas{$cid} = \%Tmp;
2038: # Most of the time the user does not have a 'resourcedata.db'
2039: # file. We need to cache that we got nothing instead of bothering
2040: # with requesting it every time.
2041: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
2042: }
2043: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
2044: $useropt{$userprefix.$name}=$value;
2045: }
2046: }
2047: # now courseopt, useropt initialized for this user and course
2048: # (used by parmval)
2049: #
2050: # Load keys for this assessment only
2051: #
2052: my %thisassess=();
2053: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2054: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2055: $thisassess{$_}=1;
2056: }
2057: #
2058: # Load parameters
2059: #
2060: my %c=();
2061: if (tie(%parmhash,'GDBM_File',
2062: $sheet->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
2063: my %f=&getformulas($sheet);
2064: foreach my $cell (keys(%f)) {
2065: next if ($cell !~ /^A/);
2066: next if ($f{$cell} =~/^[\!\~\-]/);
2067: if ($f{$cell}=~/^parameter/) {
2068: if (defined($thisassess{$f{$cell}})) {
2069: my $val = &parmval($f{$cell},$sheet);
2070: $c{$cell} = $val;
2071: $c{$f{$cell}} = $val;
2072: }
2073: } else {
2074: my $key=$f{$cell};
2075: my $ckey=$key;
2076: $key=~s/^stores\_/resource\./;
2077: $key=~s/\_/\./g;
2078: $c{$cell}=$returnhash{$key};
2079: $c{$ckey}=$returnhash{$key};
2080: }
2081: }
2082: untie(%parmhash);
2083: }
2084: &setconstants($sheet,\%c);
2085: }
2086:
2087: # --------------------------------------------------------- Various form fields
2088:
2089: sub textfield {
2090: my ($title,$name,$value)=@_;
2091: return "\n<p><b>$title:</b><br>".
2092: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2093: }
2094:
2095: sub hiddenfield {
2096: my ($name,$value)=@_;
2097: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2098: }
2099:
2100: sub selectbox {
2101: my ($title,$name,$value,%options)=@_;
2102: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2103: foreach (sort keys(%options)) {
2104: $selout.='<option value="'.$_.'"';
2105: if ($_ eq $value) { $selout.=' selected'; }
2106: $selout.='>'.$options{$_}.'</option>';
2107: }
2108: return $selout.'</select>';
2109: }
2110:
2111: # =============================================== Update information in a sheet
2112: #
2113: # Add new users or assessments, etc.
2114: #
2115:
2116: sub updatesheet {
2117: my ($sheet)=@_;
2118: my $stype=$sheet->{'sheettype'};
2119: if ($stype eq 'classcalc') {
2120: return &updateclasssheet($sheet);
2121: } else {
2122: return &updatestudentassesssheet($sheet);
2123: }
2124: }
2125:
2126: # =================================================== Load the rows for a sheet
2127: #
2128: # Import the data for rows
2129: #
2130:
2131: sub loadrows {
2132: my ($sheet,$r)=@_;
2133: my $stype=$sheet->{'sheettype'};
2134: if ($stype eq 'classcalc') {
2135: &loadcourse($sheet,$r);
2136: } elsif ($stype eq 'studentcalc') {
2137: &loadstudent($sheet);
2138: } else {
2139: &loadassessment($sheet);
2140: }
2141: }
2142:
2143: # ======================================================= Forced recalculation?
2144:
2145: sub checkthis {
2146: my ($keyname,$time)=@_;
2147: return ($time<$expiredates{$keyname});
2148: }
2149:
2150: sub forcedrecalc {
2151: my ($uname,$udom,$stype,$usymb)=@_;
2152: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2153: my $time=$oldsheets{$key.'.time'};
2154: if ($ENV{'form.forcerecalc'}) { return 1; }
2155: unless ($time) { return 1; }
2156: if ($stype eq 'assesscalc') {
2157: my $map=(split(/___/,$usymb))[0];
2158: if (&checkthis('::assesscalc:',$time) ||
2159: &checkthis('::assesscalc:'.$map,$time) ||
2160: &checkthis('::assesscalc:'.$usymb,$time) ||
2161: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2162: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2163: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2164: return 1;
2165: }
2166: } else {
2167: if (&checkthis('::studentcalc:',$time) ||
2168: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2169: return 1;
2170: }
2171: }
2172: return 0;
2173: }
2174:
2175: # ============================================================== Export handler
2176: sub exportsheet {
2177: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2178: my @exportarr=();
2179: if (defined($usymb) && ($usymb=~/^\_(\w+)/) && (!$fn)) {
2180: $fn='default_'.$1;
2181: }
2182: #
2183: # Check if cached
2184: #
2185: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2186: my $found='';
2187: if ($oldsheets{$key}) {
2188: foreach (split(/___&\___/,$oldsheets{$key})) {
2189: my ($name,$value)=split(/___=___/,$_);
2190: if ($name eq $fn) {
2191: $found=$value;
2192: }
2193: }
2194: }
2195: unless ($found) {
2196: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2197: if ($oldsheets{$key}) {
2198: foreach (split(/___&\___/,$oldsheets{$key})) {
2199: my ($name,$value)=split(/___=___/,$_);
2200: if ($name eq $fn) {
2201: $found=$value;
2202: }
2203: }
2204: }
2205: }
2206: #
2207: # Check if still valid
2208: #
2209: if ($found) {
2210: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2211: $found='';
2212: }
2213: }
2214: if ($found) {
2215: #
2216: # Return what was cached
2217: #
2218: @exportarr=split(/___;___/,$found);
2219: return @exportarr;
2220: }
2221: #
2222: # Not cached
2223: #
2224: my ($sheet)=&makenewsheet($uname,$udom,$stype,$usymb);
2225: &readsheet($sheet,$fn);
2226: &updatesheet($sheet);
2227: &loadrows($sheet);
2228: &calcsheet($sheet);
2229: @exportarr=&exportdata($sheet);
2230: #
2231: # Store now
2232: #
2233: my $cid=$ENV{'request.course.id'};
2234: my $current='';
2235: if ($stype eq 'studentcalc') {
2236: $current=&Apache::lonnet::reply('get:'.
2237: $ENV{'course.'.$cid.'.domain'}.':'.
2238: $ENV{'course.'.$cid.'.num'}.
2239: ':nohist_calculatedsheets:'.
2240: &Apache::lonnet::escape($key),
2241: $ENV{'course.'.$cid.'.home'});
2242: } else {
2243: $current=&Apache::lonnet::reply('get:'.$sheet->{'udom'}.':'.
2244: $sheet->{'uname'}.
2245: ':nohist_calculatedsheets_'.
2246: $ENV{'request.course.id'}.':'.
2247: &Apache::lonnet::escape($key),
2248: $sheet->{'uhome'});
2249: }
2250: my %currentlystored=();
2251: unless ($current=~/^error\:/) {
2252: foreach (split(/___&\___/,&Apache::lonnet::unescape($current))) {
2253: my ($name,$value)=split(/___=___/,$_);
2254: $currentlystored{$name}=$value;
2255: }
2256: }
2257: $currentlystored{$fn}=join('___;___',@exportarr);
2258: #
2259: my $newstore='';
2260: foreach (keys(%currentlystored)) {
2261: if ($newstore) { $newstore.='___&___'; }
2262: $newstore.=$_.'___=___'.$currentlystored{$_};
2263: }
2264: my $now=time;
2265: if ($stype eq 'studentcalc') {
2266: &Apache::lonnet::put('nohist_calculatedsheets',
2267: { $key => $newstore,
2268: $key.time => $now },
2269: $ENV{'course.'.$cid.'.domain'},
2270: $ENV{'course.'.$cid.'.num'})
2271: } else {
2272: &Apache::lonnet::put('nohist_calculatedsheets_'.$sheet->{'cid'},
2273: { $key => $newstore,
2274: $key.time => $now },
2275: $sheet->{'udom'},
2276: $sheet->{'uname'})
2277: }
2278: return @exportarr;
2279: }
2280:
2281: # ============================================================ Expiration Dates
2282: #
2283: # Load previously cached student spreadsheets for this course
2284: #
2285: sub expirationdates {
2286: undef %expiredates;
2287: my $cid=$ENV{'request.course.id'};
2288: my $reply=&Apache::lonnet::reply('dump:'.
2289: $ENV{'course.'.$cid.'.domain'}.':'.
2290: $ENV{'course.'.$cid.'.num'}.
2291: ':nohist_expirationdates',
2292: $ENV{'course.'.$cid.'.home'});
2293: unless ($reply=~/^error\:/) {
2294: foreach (split(/\&/,$reply)) {
2295: my ($name,$value)=split(/\=/,$_);
2296: $expiredates{&Apache::lonnet::unescape($name)}
2297: =&Apache::lonnet::unescape($value);
2298: }
2299: }
2300: }
2301:
2302: # ===================================================== Calculated sheets cache
2303: #
2304: # Load previously cached student spreadsheets for this course
2305: #
2306:
2307: sub cachedcsheets {
2308: my $cid=$ENV{'request.course.id'};
2309: my $reply=&Apache::lonnet::reply('dump:'.
2310: $ENV{'course.'.$cid.'.domain'}.':'.
2311: $ENV{'course.'.$cid.'.num'}.
2312: ':nohist_calculatedsheets',
2313: $ENV{'course.'.$cid.'.home'});
2314: unless ($reply=~/^error\:/) {
2315: foreach ( split(/\&/,$reply)) {
2316: my ($name,$value)=split(/\=/,$_);
2317: $oldsheets{&Apache::lonnet::unescape($name)}
2318: =&Apache::lonnet::unescape($value);
2319: }
2320: }
2321: }
2322:
2323: # ===================================================== Calculated sheets cache
2324: #
2325: # Load previously cached assessment spreadsheets for this student
2326: #
2327:
2328: sub cachedssheets {
2329: my ($sname,$sdom,$shome)=@_;
2330: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2331: my $cid=$ENV{'request.course.id'};
2332: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2333: ':nohist_calculatedsheets_'.
2334: $ENV{'request.course.id'},
2335: $shome);
2336: unless ($reply=~/^error\:/) {
2337: foreach ( split(/\&/,$reply)) {
2338: my ($name,$value)=split(/\=/,$_);
2339: $oldsheets{&Apache::lonnet::unescape($name)}
2340: =&Apache::lonnet::unescape($value);
2341: }
2342: }
2343: $loadedcaches{$sname.'_'.$sdom}=1;
2344: }
2345: }
2346:
2347: # ===================================================== Calculated sheets cache
2348: #
2349: # Load previously cached assessment spreadsheets for this student
2350: #
2351:
2352: # ================================================================ Main handler
2353: #
2354: # Interactive call to screen
2355: #
2356: #
2357: sub handler {
2358: my $r=shift;
2359:
2360: if (! exists($ENV{'form.Status'})) {
2361: $ENV{'form.Status'} = 'Active';
2362: }
2363: # Check this server
2364: my $loaderror=&Apache::lonnet::overloaderror($r);
2365: if ($loaderror) { return $loaderror; }
2366: # Check the course homeserver
2367: $loaderror= &Apache::lonnet::overloaderror($r,
2368: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2369: if ($loaderror) { return $loaderror; }
2370:
2371: if ($r->header_only) {
2372: $r->content_type('text/html');
2373: $r->send_http_header;
2374: return OK;
2375: }
2376: # Global directory configs
2377: $includedir = $r->dir_config('lonIncludes');
2378: $tmpdir = $r->dir_config('lonDaemons').'/tmp/';
2379: # Needs to be in a course
2380: if (! $ENV{'request.course.fn'}) {
2381: # Not in a course, or not allowed to modify parms
2382: $ENV{'user.error.msg'}=
2383: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2384: return HTTP_NOT_ACCEPTABLE;
2385: }
2386: # Get query string for limited number of parameters
2387: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2388: ['uname','udom','usymb','ufn']);
2389: if ($ENV{'request.role'} =~ /^st\./) {
2390: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
2391: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
2392: }
2393: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2394: $ENV{'form.ufn'}='default_'.$1;
2395: }
2396: # Interactive loading of specific sheet?
2397: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2398: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2399: }
2400: #
2401: # Determine the user name and domain for the sheet.
2402: my $aname;
2403: my $adom;
2404: unless ($ENV{'form.uname'}) {
2405: $aname=$ENV{'user.name'};
2406: $adom=$ENV{'user.domain'};
2407: } else {
2408: $aname=$ENV{'form.uname'};
2409: $adom=$ENV{'form.udom'};
2410: }
2411: #
2412: # Open page
2413: $r->content_type('text/html');
2414: $r->header_out('Cache-control','no-cache');
2415: $r->header_out('Pragma','no-cache');
2416: $r->send_http_header;
2417: # Screen output
2418: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2419: if ($ENV{'request.role'} !~ /^st\./) {
2420: $r->print(<<ENDSCRIPT);
2421: <script language="JavaScript">
2422:
2423: function celledit(cn,cf) {
2424: var cnf=prompt(cn,cf);
2425: if (cnf!=null) {
2426: document.sheet.unewfield.value=cn;
2427: document.sheet.unewformula.value=cnf;
2428: document.sheet.submit();
2429: }
2430: }
2431:
2432: function changesheet(cn) {
2433: document.sheet.unewfield.value=cn;
2434: document.sheet.unewformula.value='changesheet';
2435: document.sheet.submit();
2436: }
2437:
2438: function insertrow(cn) {
2439: document.sheet.unewfield.value='insertrow';
2440: document.sheet.unewformula.value=cn;
2441: document.sheet.submit();
2442: }
2443:
2444: </script>
2445: ENDSCRIPT
2446: }
2447: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
2448: '<form action="'.$r->uri.'" name=sheet method=post>');
2449: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
2450: &hiddenfield('udom',$ENV{'form.udom'}).
2451: &hiddenfield('usymb',$ENV{'form.usymb'}).
2452: &hiddenfield('unewfield','').
2453: &hiddenfield('unewformula',''));
2454: $r->rflush();
2455: #
2456: # Full recalc?
2457: if ($ENV{'form.forcerecalc'}) {
2458: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2459: undef %spreadsheets;
2460: undef %courserdatas;
2461: undef %userrdatas;
2462: undef %defaultsheets;
2463: undef %updatedata;
2464: }
2465: # Read new sheet or modified worksheet
2466: $r->uri=~/\/(\w+)$/;
2467: my ($sheet)=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2468: #
2469: # If a new formula had been entered, go from work copy
2470: if ($ENV{'form.unewfield'}) {
2471: $r->print('<h2>Modified Workcopy</h2>');
2472: $ENV{'form.unewformula'}=~s/\'/\"/g;
2473: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2474: $ENV{'form.unewformula'}.'<p>');
2475: $sheet->{'filename'} = $ENV{'form.ufn'};
2476: &tmpread($sheet,$ENV{'form.unewfield'},$ENV{'form.unewformula'});
2477: } elsif ($ENV{'form.saveas'}) {
2478: $sheet->{'filename'} = $ENV{'form.ufn'};
2479: &tmpread($sheet);
2480: } else {
2481: &readsheet($sheet,$ENV{'form.ufn'});
2482: }
2483: # Print out user information
2484: if ($sheet->{'sheettype'} ne 'classcalc') {
2485: $r->print('<p><b>User:</b> '.$sheet->{'uname'}.
2486: '<br><b>Domain:</b> '.$sheet->{'udom'});
2487: $r->print('<br><b>Section/Group:</b> '.$sheet->{'csec'});
2488: if ($ENV{'form.usymb'}) {
2489: $r->print('<br><b>Assessment:</b> <tt>'.
2490: $ENV{'form.usymb'}.'</tt>');
2491: }
2492: }
2493: #
2494: # Check user permissions
2495: if (($sheet->{'sheettype'} eq 'classcalc' ) ||
2496: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
2497: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
2498: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
2499: $r->print('<h1>Access Permission Denied</h1>'.
2500: '</form></body></html>');
2501: return OK;
2502: }
2503: }
2504: # Additional options
2505: $r->print('<br />'.
2506: '<input type="submit" name="forcerecalc" '.
2507: 'value="Completely Recalculate Sheet"><p>');
2508: if ($sheet->{'sheettype'} eq 'assesscalc') {
2509: $r->print('<p><font size=+2>'.
2510: '<a href="/adm/studentcalc?'.
2511: 'uname='.$sheet->{'uname'}.
2512: '&udom='.$sheet->{'udom'}.'">'.
2513: 'Level up: Student Sheet</a></font><p>');
2514: }
2515: if (($sheet->{'sheettype'} eq 'studentcalc') &&
2516: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
2517: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
2518: 'Level up: Course Sheet</a></font><p>');
2519: }
2520: # Save dialog
2521: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2522: my $fname=$ENV{'form.ufn'};
2523: $fname=~s/\_[^\_]+$//;
2524: if ($fname eq 'default') { $fname='course_default'; }
2525: $r->print('<input type=submit name=saveas value="Save as ...">'.
2526: '<input type=text size=20 name=newfn value="'.$fname.'">'.
2527: 'make default: <input type=checkbox name="makedefufn"><p>');
2528: }
2529: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
2530: # Load dialog
2531: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2532: $r->print('<p><input type=submit name=load value="Load ...">'.
2533: '<select name="loadthissheet">'.
2534: '<option name="default">Default</option>');
2535: foreach (&othersheets($sheet)) {
2536: $r->print('<option name="'.$_.'"');
2537: if ($ENV{'form.ufn'} eq $_) {
2538: $r->print(' selected');
2539: }
2540: $r->print('>'.$_.'</option>');
2541: }
2542: $r->print('</select><p>');
2543: if ($sheet->{'sheettype'} eq 'studentcalc') {
2544: &setothersheets($sheet,
2545: &othersheets($sheet,'assesscalc'));
2546: }
2547: }
2548: # Cached sheets
2549: &expirationdates();
2550: undef %oldsheets;
2551: undef %loadedcaches;
2552: if ($sheet->{'sheettype'} eq 'classcalc') {
2553: $r->print("Loading previously calculated student sheets ...\n");
2554: $r->rflush();
2555: &cachedcsheets();
2556: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
2557: $r->print("Loading previously calculated assessment sheets ...\n");
2558: $r->rflush();
2559: &cachedssheets($sheet->{'uname'},$sheet->{'udom'},$sheet->{'uhome'});
2560: }
2561: # Update sheet, load rows
2562: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2563: $r->rflush();
2564: #
2565: &updatesheet($sheet);
2566: $r->print("Updated rows, loading row data ...\n");
2567: $r->rflush();
2568: #
2569: &loadrows($sheet,$r);
2570: $r->print("Loaded row data, calculating sheet ...<br>\n");
2571: $r->rflush();
2572: #
2573: my $calcoutput=&calcsheet($sheet);
2574: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2575: # See if something to save
2576: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2577: my $fname='';
2578: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2579: $fname=~s/\W/\_/g;
2580: if ($fname eq 'default') { $fname='course_default'; }
2581: $fname.='_'.$sheet->{'sheettype'};
2582: $sheet->{'filename'} = $fname;
2583: $ENV{'form.ufn'}=$fname;
2584: $r->print('<p>Saving spreadsheet: '.
2585: &writesheet($sheet,$ENV{'form.makedefufn'}).
2586: '<p>');
2587: }
2588: }
2589: #
2590: # Write the modified worksheet
2591: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'<p>');
2592: &tmpwrite($sheet);
2593: if ($sheet->{'sheettype'} eq 'studentcalc') {
2594: $r->print('<br>Show rows with empty A column: ');
2595: } else {
2596: $r->print('<br>Show empty rows: ');
2597: }
2598: #
2599: $r->print(&hiddenfield('userselhidden','true').
2600: '<input type="checkbox" name="showall" onClick="submit()"');
2601: #
2602: if ($ENV{'form.showall'}) {
2603: $r->print(' checked');
2604: } else {
2605: unless ($ENV{'form.userselhidden'}) {
2606: unless
2607: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2608: $r->print(' checked');
2609: $ENV{'form.showall'}=1;
2610: }
2611: }
2612: }
2613: $r->print('>');
2614: #
2615: # CSV format checkbox (classcalc sheets only)
2616: $r->print(' Output CSV format: <input type="checkbox" '.
2617: 'name="showcsv" onClick="submit()"');
2618: $r->print(' checked') if ($ENV{'form.showcsv'});
2619: $r->print('>');
2620: if ($sheet->{'sheettype'} eq 'classcalc') {
2621: $r->print(' Student Status: '.
2622: &Apache::lonhtmlcommon::StatusOptions
2623: ($ENV{'form.Status'},'sheet'));
2624: }
2625: #
2626: # Buttons to insert rows
2627: $r->print(<<ENDINSERTBUTTONS);
2628: <br>
2629: <input type='button' onClick='insertrow("top");'
2630: value='Insert Row Top'>
2631: <input type='button' onClick='insertrow("bottom");'
2632: value='Insert Row Bottom'><br>
2633: ENDINSERTBUTTONS
2634: # Print out sheet
2635: &outsheet($r,$sheet);
2636: $r->print('</form></body></html>');
2637: # Done
2638: return OK;
2639: }
2640:
2641: 1;
2642: __END__
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