1: #
2: # $Id: lonspreadsheet.pm,v 1.127 2002/10/24 15:34:10 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'} = $constants;
1045: return %{$sheet->{'safe'}->varglob('c')}=%{$sheet->{'constants'}};
1046: }
1047:
1048: # --------------------------------------------- Set names of other spreadsheets
1049: sub setothersheets {
1050: my $sheet = shift;
1051: my @othersheets = @_;
1052: $sheet->{'othersheets'} = \@othersheets;
1053: @{$sheet->{'safe'}->varglob('os')}=@othersheets;
1054: return;
1055: }
1056:
1057: # ------------------------------------------------ Add or change formula values
1058: sub setrowlabels {
1059: my $sheet=shift;
1060: my ($rowlabel) = @_;
1061: if (! ref($rowlabel)) {
1062: my %tmp = @_;
1063: $rowlabel = \%tmp;
1064: }
1065: $sheet->{'rowlabel'}=$rowlabel;
1066: }
1067:
1068: # ------------------------------------------------------- Calculate spreadsheet
1069: sub calcsheet {
1070: my $sheet=shift;
1071: my $result = $sheet->{'safe'}->reval('&calc();');
1072: %{$sheet->{'values'}} = %{$sheet->{'safe'}->varglob('sheet_values')};
1073: return $result;
1074: }
1075:
1076: # ---------------------------------------------------------------- Get formulas
1077: sub getformulas {
1078: my $sheet = shift;
1079: return %{$sheet->{'safe'}->varglob('f')};
1080: }
1081:
1082: # ----------------------------------------------------- Get value of $f{'A'.$n}
1083: sub getfa {
1084: my $sheet = shift;
1085: my ($n)=@_;
1086: return $sheet->{'safe'}->reval('$f{"A'.$n.'"}');
1087: }
1088:
1089: # ------------------------------------------------------------- Export of A-row
1090: sub exportdata {
1091: my $sheet=shift;
1092: my @exportarray=();
1093: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1094: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1095: push(@exportarray,$sheet->{'values'}->{$_.'0'});
1096: }
1097: return @exportarray;
1098: }
1099:
1100: # ========================================================== End of Spreadsheet
1101: # =============================================================================
1102:
1103: #
1104: # Procedures for screen output
1105: #
1106: # --------------------------------------------- Produce output row n from sheet
1107:
1108: sub rown {
1109: my ($sheet,$n)=@_;
1110: my $defaultbg;
1111: my $rowdata='';
1112: my $dataflag=0;
1113: unless ($n eq '-') {
1114: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1115: } else {
1116: $defaultbg='#E0FF';
1117: }
1118: unless ($ENV{'form.showcsv'}) {
1119: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1120: } else {
1121: $rowdata.="\n".'"'.$n.'"';
1122: }
1123: my $showf=0;
1124: #
1125: # Determine how many pink (uneditable) cells there are in this sheet.
1126: my $maxred=1;
1127: my $sheettype=$sheet->{'sheettype'};
1128: if ($sheettype eq 'studentcalc') {
1129: $maxred=26;
1130: } elsif ($sheettype eq 'assesscalc') {
1131: $maxred=1;
1132: } else {
1133: $maxred=26;
1134: }
1135: $maxred=1 if (&getfa($sheet,$n)=~/^[\~\-]/);
1136: #
1137: # Get the proper row
1138: my @rowdata;
1139: if ($n eq '-') {
1140: @rowdata = &templaterow($sheet);
1141: $n=-1;
1142: $dataflag=1;
1143: } elsif ($sheettype eq 'studentcalc') {
1144: @rowdata = &outrowassess($sheet,$n);
1145: } else {
1146: @rowdata = &outrow($sheet,$n);
1147: }
1148: #
1149: foreach (@rowdata) {
1150: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1151: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1152: if ((($vl ne '') || ($vl eq '0')) &&
1153: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1154: if ($showf==0) { $vl=$_; }
1155: unless ($ENV{'form.showcsv'}) {
1156: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1157: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1158: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1159: if ($vl eq '') {
1160: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1161: }
1162: $rowdata.='<td bgcolor='.$bgcolor.'>';
1163: if ($ENV{'request.role'} =~ /^st\./) {
1164: $rowdata.=$vl;
1165: } else {
1166: $rowdata.='<a href="javascript:celledit('.$fm.');">'.
1167: $vl.'</a>';
1168: }
1169: $rowdata.='</td>';
1170: } else {
1171: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1172: }
1173: } else {
1174: $rowdata.=',"'.$vl.'"';
1175: }
1176: $showf++;
1177: } # End of foreach($safeval...)
1178: if ($ENV{'form.showall'} || ($dataflag)) {
1179: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1180: } else {
1181: return '';
1182: }
1183: }
1184:
1185: # ------------------------------------------------------------- Print out sheet
1186:
1187: sub outsheet {
1188: my ($r,$sheet)=@_;
1189: my $maxred = 26; # The maximum number of cells to show as
1190: # red (uneditable)
1191: # To make student sheets uneditable could we
1192: # set $maxred = 52?
1193: #
1194: my $realm='Course'; # 'assessment', 'user', or 'course' sheet
1195: if ($sheet->{'sheettype'} eq 'assesscalc') {
1196: $maxred=1;
1197: $realm='Assessment';
1198: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1199: $maxred=26;
1200: $realm='User';
1201: }
1202: #
1203: # Column label
1204: my $tabledata;
1205: if ($ENV{'form.showcsv'}) {
1206: $tabledata='<pre>';
1207: } else {
1208: $tabledata='<table border=2><tr><th colspan=2 rowspan=2>'.
1209: '<font size=+2>'.$realm.'</font></th>'.
1210: '<td bgcolor=#FFDDDD colspan='.$maxred.
1211: '><b><font size=+1>Import</font></b></td>'.
1212: '<td colspan='.(52-$maxred).
1213: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1214: my $showf=0;
1215: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1216: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1217: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1218: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1219: $showf++;
1220: if ($showf<=$maxred) {
1221: $tabledata.='<td bgcolor="#FFDDDD">';
1222: } else {
1223: $tabledata.='<td>';
1224: }
1225: $tabledata.="<b><font size=+1>$_</font></b></td>";
1226: }
1227: $tabledata.='</tr>'.&rown($sheet,'-').
1228: &rown($sheet,0);
1229: }
1230: $r->print($tabledata);
1231: #
1232: # Prepare to output rows
1233: my $row;
1234: #
1235: my @sortby=();
1236: my @sortidx=();
1237: for ($row=1;$row<=$sheet->{'maxrow'};$row++) {
1238: push (@sortby, $sheet->{'safe'}->reval('$f{"A'.$row.'"}'));
1239: push (@sortidx, $row-1);
1240: }
1241: @sortidx=sort { lc($sortby[$a]) cmp lc($sortby[$b]); } @sortidx;
1242: #
1243: # Determine the type of child spreadsheets
1244: my $what='Student';
1245: if ($sheet->{'sheettype'} eq 'assesscalc') {
1246: $what='Item';
1247: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1248: $what='Assessment';
1249: }
1250: #
1251: # Loop through the rows and output them one at a time
1252: my $n=0;
1253: for ($row=0;$row<$sheet->{'maxrow'};$row++) {
1254: my $thisrow=&rown($sheet,$sortidx[$row]+1);
1255: if ($thisrow) {
1256: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1257: $r->print("</table>\n<br>\n");
1258: $r->rflush();
1259: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1260: $r->print('<td>'.
1261: join('</td><td>',
1262: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
1263: 'abcdefghijklmnopqrstuvwxyz'))).
1264: "</td></tr>\n");
1265: }
1266: $n++;
1267: $r->print($thisrow);
1268: }
1269: }
1270: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1271: }
1272:
1273: #
1274: # ----------------------------------------------- Read list of available sheets
1275: #
1276: sub othersheets {
1277: my ($sheet,$stype)=@_;
1278: $stype = $sheet->{'sheettype'} if (! defined($stype));
1279: #
1280: my $cnum = $sheet->{'cnum'};
1281: my $cdom = $sheet->{'cdom'};
1282: my $chome = $sheet->{'chome'};
1283: #
1284: my @alternatives=();
1285: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1286: my ($tmp) = keys(%results);
1287: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1288: @alternatives = sort (keys(%results));
1289: }
1290: return @alternatives;
1291: }
1292:
1293:
1294: #
1295: # -------------------------------------- Parse a spreadsheet
1296: #
1297: sub parse_sheet {
1298: # $sheetxml is a scalar reference or a scalar
1299: my ($sheetxml) = @_;
1300: if (! ref($sheetxml)) {
1301: my $tmp = $sheetxml;
1302: $sheetxml = \$tmp;
1303: }
1304: my %f;
1305: my $parser=HTML::TokeParser->new($sheetxml);
1306: my $token;
1307: while ($token=$parser->get_token) {
1308: if ($token->[0] eq 'S') {
1309: if ($token->[1] eq 'field') {
1310: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1311: $parser->get_text('/field');
1312: }
1313: if ($token->[1] eq 'template') {
1314: $f{'template_'.$token->[2]->{'col'}}=
1315: $parser->get_text('/template');
1316: }
1317: }
1318: }
1319: return \%f;
1320: }
1321:
1322: #
1323: # -------------------------------------- Read spreadsheet formulas for a course
1324: #
1325: sub readsheet {
1326: my ($sheet,$fn)=@_;
1327: #
1328: my $stype = $sheet->{'sheettype'};
1329: my $cnum = $sheet->{'cnum'};
1330: my $cdom = $sheet->{'cdom'};
1331: my $chome = $sheet->{'chome'};
1332: #
1333: if (! defined($fn)) {
1334: # There is no filename. Look for defaults in course and global, cache
1335: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1336: my %tmphash = &Apache::lonnet::get('environment',
1337: ['spreadsheet_default_'.$stype],
1338: $cdom,$cnum);
1339: my ($tmp) = keys(%tmphash);
1340: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1341: $fn = 'default_'.$stype;
1342: } else {
1343: $fn = $tmphash{'spreadsheet_default_'.$stype};
1344: }
1345: unless (($fn) && ($fn!~/^error\:/)) {
1346: $fn='default_'.$stype;
1347: }
1348: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1349: }
1350: }
1351: # $fn now has a value
1352: $sheet->{'filename'} = $fn;
1353: # see if sheet is cached
1354: my $fstring='';
1355: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1356: my %tmp = split(/___;___/,$fstring);
1357: $sheet->{'f'} = \%tmp;
1358: &setformulas($sheet);
1359: } else {
1360: # Not cached, need to read
1361: my %f=();
1362: if ($fn=~/^default\_/) {
1363: my $sheetxml='';
1364: my $fh;
1365: my $dfn=$fn;
1366: $dfn=~s/\_/\./g;
1367: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1368: $sheetxml=join('',<$fh>);
1369: } else {
1370: $sheetxml='<field row="0" col="A">"Error"</field>';
1371: }
1372: %f=%{&parse_sheet(\$sheetxml)};
1373: } elsif($fn=~/\/*\.spreadsheet$/) {
1374: my $sheetxml=&Apache::lonnet::getfile
1375: (&Apache::lonnet::filelocation('',$fn));
1376: if ($sheetxml == -1) {
1377: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1378: .$fn.'"</field>';
1379: }
1380: %f=%{&parse_sheet(\$sheetxml)};
1381: } else {
1382: my $sheet='';
1383: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1384: my ($tmp) = keys(%tmphash);
1385: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1386: foreach (keys(%tmphash)) {
1387: $f{$_}=$tmphash{$_};
1388: }
1389: }
1390: }
1391: # Cache and set
1392: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1393: $sheet->{'f'}=\%f;
1394: &setformulas($sheet);
1395: }
1396: }
1397:
1398: # -------------------------------------------------------- Make new spreadsheet
1399: sub makenewsheet {
1400: my ($uname,$udom,$stype,$usymb)=@_;
1401: my $sheet={};
1402: $sheet->{'uname'} = $uname;
1403: $sheet->{'udom'} = $udom;
1404: $sheet->{'sheettype'} = $stype;
1405: $sheet->{'usymb'} = $usymb;
1406: $sheet->{'cid'} = $ENV{'request.course.id'};
1407: $sheet->{'csec'} = $Section{$uname.':'.$udom};
1408: $sheet->{'coursefilename'} = $ENV{'request.course.fn'};
1409: $sheet->{'cnum'} = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1410: $sheet->{'cdom'} = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1411: $sheet->{'chome'} = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1412: $sheet->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
1413: #
1414: #
1415: $sheet->{'f'} = {};
1416: $sheet->{'constants'} = {};
1417: $sheet->{'othersheets'} = [];
1418: $sheet->{'rowlabel'} = {};
1419: #
1420: #
1421: $sheet->{'safe'}=&initsheet($sheet->{'sheettype'});
1422: #
1423: # Place all the %$sheet items into the safe space except the safe space
1424: # itself
1425: my $initstring = '';
1426: foreach (qw/uname udom sheettype usymb cid csec coursefilename
1427: cnum cdom chome uhome/) {
1428: $initstring.= qq{\$$_="$sheet->{$_}";};
1429: }
1430: $sheet->{'safe'}->reval($initstring);
1431: return $sheet;
1432: }
1433:
1434: # ------------------------------------------------------------ Save spreadsheet
1435: sub writesheet {
1436: my ($sheet,$makedef)=@_;
1437: my $cid=$sheet->{'cid'};
1438: if (&Apache::lonnet::allowed('opa',$cid)) {
1439: my %f=&getformulas($sheet);
1440: my $stype= $sheet->{'sheettype'};
1441: my $cnum = $sheet->{'cnum'};
1442: my $cdom = $sheet->{'cdom'};
1443: my $chome= $sheet->{'chome'};
1444: my $fn = $sheet->{'filename'};
1445: # Cache new sheet
1446: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1447: # Write sheet
1448: my $sheetdata='';
1449: foreach (keys(%f)) {
1450: unless ($f{$_} eq 'import') {
1451: $sheetdata.=&Apache::lonnet::escape($_).'='.
1452: &Apache::lonnet::escape($f{$_}).'&';
1453: }
1454: }
1455: $sheetdata=~s/\&$//;
1456: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1457: $sheetdata,$chome);
1458: if ($reply eq 'ok') {
1459: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1460: $stype.'_spreadsheets:'.
1461: &Apache::lonnet::escape($fn).
1462: '='.$ENV{'user.name'}.'@'.
1463: $ENV{'user.domain'},
1464: $chome);
1465: if ($reply eq 'ok') {
1466: if ($makedef) {
1467: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1468: ':environment:'.
1469: 'spreadsheet_default_'.
1470: $stype.'='.
1471: &Apache::lonnet::escape($fn),
1472: $chome);
1473: }
1474: return $reply;
1475: }
1476: return $reply;
1477: }
1478: return $reply;
1479: }
1480: return 'unauthorized';
1481: }
1482:
1483: # ----------------------------------------------- Make a temp copy of the sheet
1484: # "Modified workcopy" - interactive only
1485: #
1486: sub tmpwrite {
1487: my ($sheet) = @_;
1488: my $fn=$ENV{'user.name'}.'_'.
1489: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1490: $sheet->{'filename'};
1491: $fn=~s/\W/\_/g;
1492: $fn=$tmpdir.$fn.'.tmp';
1493: my $fh;
1494: if ($fh=Apache::File->new('>'.$fn)) {
1495: print $fh join("\n",&getformulas($sheet));
1496: }
1497: }
1498:
1499: # ---------------------------------------------------------- Read the temp copy
1500: sub tmpread {
1501: my ($sheet,$nfield,$nform)=@_;
1502: my $fn=$ENV{'user.name'}.'_'.
1503: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1504: $sheet->{'filename'};
1505: $fn=~s/\W/\_/g;
1506: $fn=$tmpdir.$fn.'.tmp';
1507: my $fh;
1508: my %fo=();
1509: my $countrows=0;
1510: if ($fh=Apache::File->new($fn)) {
1511: my $name;
1512: while ($name=<$fh>) {
1513: chomp($name);
1514: my $value=<$fh>;
1515: chomp($value);
1516: $fo{$name}=$value;
1517: if ($name=~/^A(\d+)$/) {
1518: if ($1>$countrows) {
1519: $countrows=$1;
1520: }
1521: }
1522: }
1523: }
1524: if ($nform eq 'changesheet') {
1525: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1526: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1527: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1528: }
1529: } elsif ($nfield eq 'insertrow') {
1530: $countrows++;
1531: my $newrow=substr('000000'.$countrows,-7);
1532: if ($nform eq 'top') {
1533: $fo{'A'.$countrows}='--- '.$newrow;
1534: } else {
1535: $fo{'A'.$countrows}='~~~ '.$newrow;
1536: }
1537: } else {
1538: if ($nfield) { $fo{$nfield}=$nform; }
1539: }
1540: $sheet->{'f'}=\%fo;
1541: &setformulas($sheet);
1542: }
1543:
1544: ##################################################
1545: ##################################################
1546:
1547: =pod
1548:
1549: =item &parmval()
1550:
1551: Determine the value of a parameter.
1552:
1553: Inputs: $what, the parameter needed, $sheet, the safe space
1554:
1555: Returns: The value of a parameter, or '' if none.
1556:
1557: This function cascades through the possible levels searching for a value for
1558: a parameter. The levels are checked in the following order:
1559: user, course (at section level and course level), map, and lonnet::metadata.
1560: This function uses %parmhash, which must be tied prior to calling it.
1561: This function also requires %courseopt and %useropt to be initialized for
1562: this user and course.
1563:
1564: =cut
1565:
1566: ##################################################
1567: ##################################################
1568: sub parmval {
1569: my ($what,$sheet)=@_;
1570: my $symb = $sheet->{'usymb'};
1571: unless ($symb) { return ''; }
1572: #
1573: my $cid = $sheet->{'cid'};
1574: my $csec = $sheet->{'csec'};
1575: my $uname = $sheet->{'uname'};
1576: my $udom = $sheet->{'udom'};
1577: my $result='';
1578: #
1579: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1580: # Cascading lookup scheme
1581: my $rwhat=$what;
1582: $what =~ s/^parameter\_//;
1583: $what =~ s/\_([^\_]+)$/\.$1/;
1584: #
1585: my $symbparm = $symb.'.'.$what;
1586: my $mapparm = $mapname.'___(all).'.$what;
1587: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
1588: #
1589: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
1590: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
1591: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
1592: #
1593: my $courselevel = $usercourseprefix.'.'.$what;
1594: my $courselevelr = $usercourseprefix.'.'.$symbparm;
1595: my $courselevelm = $usercourseprefix.'.'.$mapparm;
1596: # fourth, check user
1597: if (defined($uname)) {
1598: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
1599: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
1600: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
1601: }
1602: # third, check course
1603: if (defined($csec)) {
1604: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
1605: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
1606: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
1607: }
1608: #
1609: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
1610: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
1611: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
1612: # second, check map parms
1613: my $thisparm = $parmhash{$symbparm};
1614: return $thisparm if (defined($thisparm));
1615: # first, check default
1616: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1617: }
1618:
1619: sub format_rowlabel {
1620: my $rowlabel = shift;
1621: my ($type,$labeldata) = split(':',$rowlabel,2);
1622: my $result = '';
1623: if ($type eq 'symb') {
1624: my ($symb,$uname,$udom,$title) = split(':',$labeldata);
1625: $symb = &Apache::lonnet::unescape($symb);
1626: if ($ENV{'form.showcsv'}) {
1627: $result = $title;
1628: } else {
1629: $result = '<a href="/adm/assesscalc?usymb='.$symb.
1630: '&uname='.$uname.'&udom='.$udom.'">'.$title.'</a>';
1631: }
1632: } elsif ($type eq 'student') {
1633: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
1634: if ($ENV{'form.showcsv'}) {
1635: $result = '"'.
1636: join('","',($sname,$sdom,$fullname,$section,$id).'"');
1637: } else {
1638: $result ='<a href="/adm/studentcalc?uname='.$sname.
1639: '&udom='.$sdom.'">';
1640: $result.=$section.' '.$id." ".$fullname.'</a>';
1641: }
1642: } elsif ($type eq 'parameter') {
1643: if ($ENV{'form.showcsv'}) {
1644: $labeldata =~ s/<br>/ /g;
1645: }
1646: $result = $labeldata;
1647: } else {
1648: &Apache::lonnet::logthis("lonspreadsheet:bogus rowlabel type: $type");
1649: }
1650: return $result;
1651: }
1652:
1653: # ---------------------------------------------- Update rows for course listing
1654: sub updateclasssheet {
1655: my ($sheet) = @_;
1656: my $cnum =$sheet->{'cnum'};
1657: my $cdom =$sheet->{'cdom'};
1658: my $cid =$sheet->{'cid'};
1659: my $chome =$sheet->{'chome'};
1660: #
1661: %Section = ();
1662:
1663: #
1664: # Read class list and row labels
1665: my $classlist = &Apache::loncoursedata::get_classlist();
1666: if (! defined($classlist)) {
1667: return 'Could not access course classlist';
1668: }
1669: #
1670: my %currentlist=();
1671: foreach my $student (keys(%$classlist)) {
1672: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
1673: $fullname,$status) = @{$classlist->{$student}};
1674: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
1675: $currentlist{$student}=join(':',('student',$studentName,
1676: $studentDomain,$fullname,
1677: $studentSection,$id));
1678: }
1679: }
1680: #
1681: # Find discrepancies between the course row table and this
1682: #
1683: my %f=&getformulas($sheet);
1684: my $changed=0;
1685: #
1686: $sheet->{'maxrow'}=0;
1687: my %existing=();
1688: #
1689: # Now obsolete rows
1690: foreach (keys(%f)) {
1691: if ($_=~/^A(\d+)/) {
1692: if ($1 > $sheet->{'maxrow'}) {
1693: $sheet->{'maxrow'}= $1;
1694: }
1695: $existing{$f{$_}}=1;
1696: unless ((defined($currentlist{$f{$_}})) || (!$1) ||
1697: ($f{$_}=~/^(~~~|---)/)) {
1698: $f{$_}='!!! Obsolete';
1699: $changed=1;
1700: }
1701: }
1702: }
1703: #
1704: # New and unknown keys
1705: foreach (sort keys(%currentlist)) {
1706: unless ($existing{$_}) {
1707: $changed=1;
1708: $sheet->{'maxrow'}++;
1709: $f{'A'.$sheet->{'maxrow'}}=$_;
1710: }
1711: }
1712: if ($changed) {
1713: $sheet->{'f'} = \%f;
1714: &setformulas($sheet,%f);
1715: }
1716: #
1717: &setrowlabels($sheet,\%currentlist);
1718: }
1719:
1720: # ----------------------------------- Update rows for student and assess sheets
1721: sub updatestudentassesssheet {
1722: my ($sheet) = @_;
1723: my %bighash;
1724: my $stype=$sheet->{'sheettype'};
1725: my $uname=$sheet->{'uname'};
1726: my $udom =$sheet->{'udom'};
1727: $sheet->{'rowlabel'} = {};
1728: if ($updatedata
1729: {$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}) {
1730: %{$sheet->{'rowlabel'}}=split(/___;___/,
1731: $updatedata{$ENV{'request.course.fn'}.
1732: '_'.$stype.'_'.$uname.'_'.$udom});
1733: } else {
1734: # Tie hash
1735: tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1736: &GDBM_READER(),0640);
1737: if (! tied(%bighash)) {
1738: return 'Could not access course data';
1739: }
1740: # Get all assessments
1741: #
1742: # allkeys is used in the assessment sheets to provide labels
1743: # for the parameters.
1744: my %allkeys=('timestamp' =>
1745: 'parameter:Timestamp of Last Transaction<br>timestamp',
1746: 'subnumber' =>
1747: 'parameter:Number of Submissions<br>subnumber',
1748: 'tutornumber' =>
1749: 'parameter:Number of Tutor Responses<br>tutornumber',
1750: 'totalpoints' =>
1751: 'parameter:Total Points Granted<br>totalpoints');
1752: my $adduserstr='';
1753: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})){
1754: $adduserstr='&uname='.$uname.'&udom='.$udom;
1755: }
1756: #
1757: # allassess holds the descriptions of all assessments
1758: my %allassess;
1759: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
1760: my $symb = '_'.lc($_);
1761: $allassess{$symb} = join(':',('symb',$symb,$uname,$udom,$_));
1762: }
1763: while (($_,undef) = each(%bighash)) {
1764: next if ($_!~/^src\_(\d+)\.(\d+)$/);
1765: my $mapid=$1;
1766: my $resid=$2;
1767: my $id=$mapid.'.'.$resid;
1768: my $srcf=$bighash{$_};
1769: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1770: my $symb=
1771: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1772: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
1773: $allassess{$symb}='symb:'.&Apache::lonnet::escape($symb).':'
1774: .$uname.':'.$udom.':'.$bighash{'title_'.$id};
1775: next if ($stype ne 'assesscalc');
1776: foreach my $key (split(/\,/,
1777: &Apache::lonnet::metadata($srcf,'keys')
1778: )) {
1779: next if ($key !~ /^(stores|parameter)_/);
1780: my $display=
1781: &Apache::lonnet::metadata($srcf,$key.'.display');
1782: unless ($display) {
1783: $display.=
1784: &Apache::lonnet::metadata($srcf,$key.'.name');
1785: }
1786: $display.='<br>'.$key;
1787: $allkeys{$key}='parameter:'.$display;
1788: } # end of foreach
1789: }
1790: } # end of foreach (keys(%bighash))
1791: untie(%bighash);
1792: #
1793: # %allkeys has a list of storage and parameter displays by unikey
1794: # %allassess has a list of all resource displays by symb
1795: #
1796: if ($stype eq 'assesscalc') {
1797: $sheet->{'rowlabel'} = \%allkeys;
1798: } elsif ($stype eq 'studentcalc') {
1799: $sheet->{'rowlabel'} = \%allassess;
1800: }
1801: $updatedata{$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}=
1802: join('___;___',%{$sheet->{'rowlabel'}});
1803: # Get current from cache
1804: }
1805: # Find discrepancies between the course row table and this
1806: #
1807: my %f=&getformulas($sheet);
1808: my $changed=0;
1809:
1810: $sheet->{'maxrow'} = 0;
1811: my %existing=();
1812: # Now obsolete rows
1813: foreach (keys(%f)) {
1814: next if ($_!~/^A(\d+)/);
1815: if ($1 > $sheet->{'maxrow'}) {
1816: $sheet->{'maxrow'} = $1;
1817: }
1818: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1819: $existing{$usy}=1;
1820: unless ((exists($sheet->{'rowlabel'}->{$usy}) &&
1821: (defined($sheet->{'rowlabel'}->{$usy})) || (!$1) ||
1822: ($f{$_}=~/^(~~~|---)/))){
1823: $f{$_}='!!! Obsolete';
1824: $changed=1;
1825: } elsif ($ufn) {
1826: $sheet->{'rowlabel'}->{$usy}
1827: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1828: }
1829: }
1830: # New and unknown keys
1831: foreach (keys(%{$sheet->{'rowlabel'}})) {
1832: unless ($existing{$_}) {
1833: $changed=1;
1834: $sheet->{'maxrow'}++;
1835: $f{'A'.$sheet->{'maxrow'}}=$_;
1836: }
1837: }
1838: if ($changed) {
1839: $sheet->{'f'} = \%f;
1840: &setformulas($sheet);
1841: }
1842: #
1843: undef %existing;
1844: }
1845:
1846: # ------------------------------------------------ Load data for one assessment
1847:
1848: sub loadstudent {
1849: my ($sheet)=@_;
1850: my %c=();
1851: my %f=&getformulas($sheet);
1852: $cachedassess=$sheet->{'uname'}.':'.$sheet->{'udom'};
1853: # Get ALL the student preformance data
1854: my @tmp = &Apache::lonnet::dump($sheet->{'cid'},
1855: $sheet->{'udom'},
1856: $sheet->{'uname'},
1857: undef);
1858: if ($tmp[0] !~ /^error:/) {
1859: %cachedstores = @tmp;
1860: }
1861: undef @tmp;
1862: #
1863: my @assessdata=();
1864: foreach (keys(%f)) {
1865: next if ($_!~/^A(\d+)/);
1866: my $row=$1;
1867: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1868: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1869: @assessdata=&exportsheet($sheet->{'uname'},
1870: $sheet->{'udom'},
1871: 'assesscalc',$usy,$ufn);
1872: my $index=0;
1873: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1874: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1875: if ($assessdata[$index]) {
1876: my $col=$_;
1877: if ($assessdata[$index]=~/\D/) {
1878: $c{$col.$row}="'".$assessdata[$index]."'";
1879: } else {
1880: $c{$col.$row}=$assessdata[$index];
1881: }
1882: unless ($col eq 'A') {
1883: $f{$col.$row}='import';
1884: }
1885: }
1886: $index++;
1887: }
1888: }
1889: $cachedassess='';
1890: undef %cachedstores;
1891: $sheet->{'f'} = \%f;
1892: &setformulas($sheet);
1893: &setconstants($sheet,\%c);
1894: }
1895:
1896: # --------------------------------------------------- Load data for one student
1897: #
1898: sub loadcourse {
1899: my ($sheet,$r)=@_;
1900: my %c=();
1901: my %f=&getformulas($sheet);
1902: my $total=0;
1903: foreach (keys(%f)) {
1904: if ($_=~/^A(\d+)/) {
1905: unless ($f{$_}=~/^[\!\~\-]/) { $total++; }
1906: }
1907: }
1908: my $now=0;
1909: my $since=time;
1910: $r->print(<<ENDPOP);
1911: <script>
1912: popwin=open('','popwin','width=400,height=100');
1913: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1914: '<h3>Spreadsheet Calculation Progress</h3>'+
1915: '<form name=popremain>'+
1916: '<input type=text size=35 name=remaining value=Starting></form>'+
1917: '</body></html>');
1918: popwin.document.close();
1919: </script>
1920: ENDPOP
1921: $r->rflush();
1922: foreach (keys(%f)) {
1923: next if ($_!~/^A(\d+)/);
1924: my $row=$1;
1925: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1926: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1927: 'studentcalc');
1928: undef %userrdatas;
1929: $now++;
1930: $r->print('<script>popwin.document.popremain.remaining.value="'.
1931: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1932: ' secs remaining";</script>');
1933: $r->rflush();
1934: #
1935: my $index=0;
1936: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1937: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1938: if ($studentdata[$index]) {
1939: my $col=$_;
1940: if ($studentdata[$index]=~/\D/) {
1941: $c{$col.$row}="'".$studentdata[$index]."'";
1942: } else {
1943: $c{$col.$row}=$studentdata[$index];
1944: }
1945: unless ($col eq 'A') {
1946: $f{$col.$row}='import';
1947: }
1948: $index++;
1949: }
1950: }
1951: }
1952: $sheet->{'f'}=\%f;
1953: &setformulas($sheet);
1954: &setconstants($sheet,\%c);
1955: $r->print('<script>popwin.close()</script>');
1956: $r->rflush();
1957: }
1958:
1959: # ------------------------------------------------ Load data for one assessment
1960: #
1961: sub loadassessment {
1962: my ($sheet)=@_;
1963:
1964: my $uhome = $sheet->{'uhome'};
1965: my $uname = $sheet->{'uname'};
1966: my $udom = $sheet->{'udom'};
1967: my $symb = $sheet->{'usymb'};
1968: my $cid = $sheet->{'cid'};
1969: my $cnum = $sheet->{'cnum'};
1970: my $cdom = $sheet->{'cdom'};
1971: my $chome = $sheet->{'chome'};
1972:
1973: my $namespace;
1974: unless ($namespace=$cid) { return ''; }
1975: # Get stored values
1976: my %returnhash=();
1977: if ($cachedassess eq $uname.':'.$udom) {
1978: #
1979: # get data out of the dumped stores
1980: #
1981: my $version=$cachedstores{'version:'.$symb};
1982: my $scope;
1983: for ($scope=1;$scope<=$version;$scope++) {
1984: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
1985: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1986: }
1987: }
1988: } else {
1989: #
1990: # restore individual
1991: #
1992: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
1993: for (my $version=1;$version<=$returnhash{'version'};$version++) {
1994: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1995: $returnhash{$_}=$returnhash{$version.':'.$_};
1996: }
1997: }
1998: }
1999: #
2000: # returnhash now has all stores for this resource
2001: # convert all "_" to "." to be able to use libraries, multiparts, etc
2002: #
2003: # This is dumb. It is also necessary :(
2004: my @oldkeys=keys %returnhash;
2005: #
2006: foreach my $name (@oldkeys) {
2007: my $value=$returnhash{$name};
2008: delete $returnhash{$name};
2009: $name=~s/\_/\./g;
2010: $returnhash{$name}=$value;
2011: }
2012: # initialize coursedata and userdata for this user
2013: undef %courseopt;
2014: undef %useropt;
2015:
2016: my $userprefix=$uname.'_'.$udom.'_';
2017:
2018: unless ($uhome eq 'no_host') {
2019: # Get coursedata
2020: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
2021: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
2022: $courserdatas{$cid}=\%Tmp;
2023: $courserdatas{$cid.'.last_cache'}=time;
2024: }
2025: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
2026: $courseopt{$userprefix.$name}=$value;
2027: }
2028: # Get userdata (if present)
2029: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
2030: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
2031: $userrdatas{$cid} = \%Tmp;
2032: # Most of the time the user does not have a 'resourcedata.db'
2033: # file. We need to cache that we got nothing instead of bothering
2034: # with requesting it every time.
2035: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
2036: }
2037: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
2038: $useropt{$userprefix.$name}=$value;
2039: }
2040: }
2041: # now courseopt, useropt initialized for this user and course
2042: # (used by parmval)
2043: #
2044: # Load keys for this assessment only
2045: #
2046: my %thisassess=();
2047: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2048: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2049: $thisassess{$_}=1;
2050: }
2051: #
2052: # Load parameters
2053: #
2054: my %c=();
2055: if (tie(%parmhash,'GDBM_File',
2056: $sheet->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
2057: my %f=&getformulas($sheet);
2058: foreach my $cell (keys(%f)) {
2059: next if ($cell !~ /^A/);
2060: next if ($f{$cell} =~/^[\!\~\-]/);
2061: if ($f{$cell}=~/^parameter/) {
2062: if (defined($thisassess{$f{$cell}})) {
2063: my $val = &parmval($f{$cell},$sheet);
2064: $c{$cell} = $val;
2065: $c{$f{$cell}} = $val;
2066: }
2067: } else {
2068: my $key=$f{$cell};
2069: my $ckey=$key;
2070: $key=~s/^stores\_/resource\./;
2071: $key=~s/\_/\./g;
2072: $c{$cell}=$returnhash{$key};
2073: $c{$ckey}=$returnhash{$key};
2074: }
2075: }
2076: untie(%parmhash);
2077: }
2078: &setconstants($sheet,\%c);
2079: }
2080:
2081: # --------------------------------------------------------- Various form fields
2082:
2083: sub textfield {
2084: my ($title,$name,$value)=@_;
2085: return "\n<p><b>$title:</b><br>".
2086: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2087: }
2088:
2089: sub hiddenfield {
2090: my ($name,$value)=@_;
2091: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2092: }
2093:
2094: sub selectbox {
2095: my ($title,$name,$value,%options)=@_;
2096: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2097: foreach (sort keys(%options)) {
2098: $selout.='<option value="'.$_.'"';
2099: if ($_ eq $value) { $selout.=' selected'; }
2100: $selout.='>'.$options{$_}.'</option>';
2101: }
2102: return $selout.'</select>';
2103: }
2104:
2105: # =============================================== Update information in a sheet
2106: #
2107: # Add new users or assessments, etc.
2108: #
2109:
2110: sub updatesheet {
2111: my ($sheet)=@_;
2112: my $stype=$sheet->{'sheettype'};
2113: if ($stype eq 'classcalc') {
2114: return &updateclasssheet($sheet);
2115: } else {
2116: return &updatestudentassesssheet($sheet);
2117: }
2118: }
2119:
2120: # =================================================== Load the rows for a sheet
2121: #
2122: # Import the data for rows
2123: #
2124:
2125: sub loadrows {
2126: my ($sheet,$r)=@_;
2127: my $stype=$sheet->{'sheettype'};
2128: if ($stype eq 'classcalc') {
2129: &loadcourse($sheet,$r);
2130: } elsif ($stype eq 'studentcalc') {
2131: &loadstudent($sheet);
2132: } else {
2133: &loadassessment($sheet);
2134: }
2135: }
2136:
2137: # ======================================================= Forced recalculation?
2138:
2139: sub checkthis {
2140: my ($keyname,$time)=@_;
2141: return ($time<$expiredates{$keyname});
2142: }
2143:
2144: sub forcedrecalc {
2145: my ($uname,$udom,$stype,$usymb)=@_;
2146: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2147: my $time=$oldsheets{$key.'.time'};
2148: if ($ENV{'form.forcerecalc'}) { return 1; }
2149: unless ($time) { return 1; }
2150: if ($stype eq 'assesscalc') {
2151: my $map=(split(/___/,$usymb))[0];
2152: if (&checkthis('::assesscalc:',$time) ||
2153: &checkthis('::assesscalc:'.$map,$time) ||
2154: &checkthis('::assesscalc:'.$usymb,$time) ||
2155: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2156: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2157: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2158: return 1;
2159: }
2160: } else {
2161: if (&checkthis('::studentcalc:',$time) ||
2162: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2163: return 1;
2164: }
2165: }
2166: return 0;
2167: }
2168:
2169: # ============================================================== Export handler
2170: sub exportsheet {
2171: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2172: my @exportarr=();
2173: if (defined($usymb) && ($usymb=~/^\_(\w+)/) && (!$fn)) {
2174: $fn='default_'.$1;
2175: }
2176: #
2177: # Check if cached
2178: #
2179: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2180: my $found='';
2181: if ($oldsheets{$key}) {
2182: foreach (split(/___&\___/,$oldsheets{$key})) {
2183: my ($name,$value)=split(/___=___/,$_);
2184: if ($name eq $fn) {
2185: $found=$value;
2186: }
2187: }
2188: }
2189: unless ($found) {
2190: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2191: if ($oldsheets{$key}) {
2192: foreach (split(/___&\___/,$oldsheets{$key})) {
2193: my ($name,$value)=split(/___=___/,$_);
2194: if ($name eq $fn) {
2195: $found=$value;
2196: }
2197: }
2198: }
2199: }
2200: #
2201: # Check if still valid
2202: #
2203: if ($found) {
2204: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2205: $found='';
2206: }
2207: }
2208: if ($found) {
2209: #
2210: # Return what was cached
2211: #
2212: @exportarr=split(/___;___/,$found);
2213: return @exportarr;
2214: }
2215: #
2216: # Not cached
2217: #
2218: my ($sheet)=&makenewsheet($uname,$udom,$stype,$usymb);
2219: &readsheet($sheet,$fn);
2220: &updatesheet($sheet);
2221: &loadrows($sheet);
2222: &calcsheet($sheet);
2223: @exportarr=&exportdata($sheet);
2224: #
2225: # Store now
2226: #
2227: my $cid=$ENV{'request.course.id'};
2228: my $current='';
2229: if ($stype eq 'studentcalc') {
2230: $current=&Apache::lonnet::reply('get:'.
2231: $ENV{'course.'.$cid.'.domain'}.':'.
2232: $ENV{'course.'.$cid.'.num'}.
2233: ':nohist_calculatedsheets:'.
2234: &Apache::lonnet::escape($key),
2235: $ENV{'course.'.$cid.'.home'});
2236: } else {
2237: $current=&Apache::lonnet::reply('get:'.$sheet->{'udom'}.':'.
2238: $sheet->{'uname'}.
2239: ':nohist_calculatedsheets_'.
2240: $ENV{'request.course.id'}.':'.
2241: &Apache::lonnet::escape($key),
2242: $sheet->{'uhome'});
2243: }
2244: my %currentlystored=();
2245: unless ($current=~/^error\:/) {
2246: foreach (split(/___&\___/,&Apache::lonnet::unescape($current))) {
2247: my ($name,$value)=split(/___=___/,$_);
2248: $currentlystored{$name}=$value;
2249: }
2250: }
2251: $currentlystored{$fn}=join('___;___',@exportarr);
2252: #
2253: my $newstore='';
2254: foreach (keys(%currentlystored)) {
2255: if ($newstore) { $newstore.='___&___'; }
2256: $newstore.=$_.'___=___'.$currentlystored{$_};
2257: }
2258: my $now=time;
2259: if ($stype eq 'studentcalc') {
2260: &Apache::lonnet::put('nohist_calculatedsheets',
2261: { $key => $newstore,
2262: $key.time => $now },
2263: $ENV{'course.'.$cid.'.domain'},
2264: $ENV{'course.'.$cid.'.num'})
2265: } else {
2266: &Apache::lonnet::put('nohist_calculatedsheets_'.$sheet->{'cid'},
2267: { $key => $newstore,
2268: $key.time => $now },
2269: $sheet->{'udom'},
2270: $sheet->{'uname'})
2271: }
2272: return @exportarr;
2273: }
2274:
2275: # ============================================================ Expiration Dates
2276: #
2277: # Load previously cached student spreadsheets for this course
2278: #
2279: sub expirationdates {
2280: undef %expiredates;
2281: my $cid=$ENV{'request.course.id'};
2282: my $reply=&Apache::lonnet::reply('dump:'.
2283: $ENV{'course.'.$cid.'.domain'}.':'.
2284: $ENV{'course.'.$cid.'.num'}.
2285: ':nohist_expirationdates',
2286: $ENV{'course.'.$cid.'.home'});
2287: unless ($reply=~/^error\:/) {
2288: foreach (split(/\&/,$reply)) {
2289: my ($name,$value)=split(/\=/,$_);
2290: $expiredates{&Apache::lonnet::unescape($name)}
2291: =&Apache::lonnet::unescape($value);
2292: }
2293: }
2294: }
2295:
2296: # ===================================================== Calculated sheets cache
2297: #
2298: # Load previously cached student spreadsheets for this course
2299: #
2300:
2301: sub cachedcsheets {
2302: my $cid=$ENV{'request.course.id'};
2303: my $reply=&Apache::lonnet::reply('dump:'.
2304: $ENV{'course.'.$cid.'.domain'}.':'.
2305: $ENV{'course.'.$cid.'.num'}.
2306: ':nohist_calculatedsheets',
2307: $ENV{'course.'.$cid.'.home'});
2308: unless ($reply=~/^error\:/) {
2309: foreach ( split(/\&/,$reply)) {
2310: my ($name,$value)=split(/\=/,$_);
2311: $oldsheets{&Apache::lonnet::unescape($name)}
2312: =&Apache::lonnet::unescape($value);
2313: }
2314: }
2315: }
2316:
2317: # ===================================================== Calculated sheets cache
2318: #
2319: # Load previously cached assessment spreadsheets for this student
2320: #
2321:
2322: sub cachedssheets {
2323: my ($sname,$sdom,$shome)=@_;
2324: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2325: my $cid=$ENV{'request.course.id'};
2326: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2327: ':nohist_calculatedsheets_'.
2328: $ENV{'request.course.id'},
2329: $shome);
2330: unless ($reply=~/^error\:/) {
2331: foreach ( split(/\&/,$reply)) {
2332: my ($name,$value)=split(/\=/,$_);
2333: $oldsheets{&Apache::lonnet::unescape($name)}
2334: =&Apache::lonnet::unescape($value);
2335: }
2336: }
2337: $loadedcaches{$sname.'_'.$sdom}=1;
2338: }
2339: }
2340:
2341: # ===================================================== Calculated sheets cache
2342: #
2343: # Load previously cached assessment spreadsheets for this student
2344: #
2345:
2346: # ================================================================ Main handler
2347: #
2348: # Interactive call to screen
2349: #
2350: #
2351: sub handler {
2352: my $r=shift;
2353:
2354: if (! exists($ENV{'form.Status'})) {
2355: $ENV{'form.Status'} = 'Active';
2356: }
2357: # Check this server
2358: my $loaderror=&Apache::lonnet::overloaderror($r);
2359: if ($loaderror) { return $loaderror; }
2360: # Check the course homeserver
2361: $loaderror= &Apache::lonnet::overloaderror($r,
2362: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2363: if ($loaderror) { return $loaderror; }
2364:
2365: if ($r->header_only) {
2366: $r->content_type('text/html');
2367: $r->send_http_header;
2368: return OK;
2369: }
2370: # Global directory configs
2371: $includedir = $r->dir_config('lonIncludes');
2372: $tmpdir = $r->dir_config('lonDaemons').'/tmp/';
2373: # Needs to be in a course
2374: if (! $ENV{'request.course.fn'}) {
2375: # Not in a course, or not allowed to modify parms
2376: $ENV{'user.error.msg'}=
2377: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2378: return HTTP_NOT_ACCEPTABLE;
2379: }
2380: # Get query string for limited number of parameters
2381: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2382: ['uname','udom','usymb','ufn']);
2383: if ($ENV{'request.role'} =~ /^st\./) {
2384: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
2385: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
2386: }
2387: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2388: $ENV{'form.ufn'}='default_'.$1;
2389: }
2390: # Interactive loading of specific sheet?
2391: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2392: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2393: }
2394: #
2395: # Determine the user name and domain for the sheet.
2396: my $aname;
2397: my $adom;
2398: unless ($ENV{'form.uname'}) {
2399: $aname=$ENV{'user.name'};
2400: $adom=$ENV{'user.domain'};
2401: } else {
2402: $aname=$ENV{'form.uname'};
2403: $adom=$ENV{'form.udom'};
2404: }
2405: #
2406: # Open page
2407: $r->content_type('text/html');
2408: $r->header_out('Cache-control','no-cache');
2409: $r->header_out('Pragma','no-cache');
2410: $r->send_http_header;
2411: # Screen output
2412: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2413: if ($ENV{'request.role'} !~ /^st\./) {
2414: $r->print(<<ENDSCRIPT);
2415: <script language="JavaScript">
2416:
2417: function celledit(cn,cf) {
2418: var cnf=prompt(cn,cf);
2419: if (cnf!=null) {
2420: document.sheet.unewfield.value=cn;
2421: document.sheet.unewformula.value=cnf;
2422: document.sheet.submit();
2423: }
2424: }
2425:
2426: function changesheet(cn) {
2427: document.sheet.unewfield.value=cn;
2428: document.sheet.unewformula.value='changesheet';
2429: document.sheet.submit();
2430: }
2431:
2432: function insertrow(cn) {
2433: document.sheet.unewfield.value='insertrow';
2434: document.sheet.unewformula.value=cn;
2435: document.sheet.submit();
2436: }
2437:
2438: </script>
2439: ENDSCRIPT
2440: }
2441: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
2442: '<form action="'.$r->uri.'" name=sheet method=post>');
2443: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
2444: &hiddenfield('udom',$ENV{'form.udom'}).
2445: &hiddenfield('usymb',$ENV{'form.usymb'}).
2446: &hiddenfield('unewfield','').
2447: &hiddenfield('unewformula',''));
2448: $r->rflush();
2449: #
2450: # Full recalc?
2451: if ($ENV{'form.forcerecalc'}) {
2452: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2453: undef %spreadsheets;
2454: undef %courserdatas;
2455: undef %userrdatas;
2456: undef %defaultsheets;
2457: undef %updatedata;
2458: }
2459: # Read new sheet or modified worksheet
2460: $r->uri=~/\/(\w+)$/;
2461: my ($sheet)=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2462: #
2463: # If a new formula had been entered, go from work copy
2464: if ($ENV{'form.unewfield'}) {
2465: $r->print('<h2>Modified Workcopy</h2>');
2466: $ENV{'form.unewformula'}=~s/\'/\"/g;
2467: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2468: $ENV{'form.unewformula'}.'<p>');
2469: $sheet->{'filename'} = $ENV{'form.ufn'};
2470: &tmpread($sheet,$ENV{'form.unewfield'},$ENV{'form.unewformula'});
2471: } elsif ($ENV{'form.saveas'}) {
2472: $sheet->{'filename'} = $ENV{'form.ufn'};
2473: &tmpread($sheet);
2474: } else {
2475: &readsheet($sheet,$ENV{'form.ufn'});
2476: }
2477: # Print out user information
2478: if ($sheet->{'sheettype'} ne 'classcalc') {
2479: $r->print('<p><b>User:</b> '.$sheet->{'uname'}.
2480: '<br><b>Domain:</b> '.$sheet->{'udom'});
2481: $r->print('<br><b>Section/Group:</b> '.$sheet->{'csec'});
2482: if ($ENV{'form.usymb'}) {
2483: $r->print('<br><b>Assessment:</b> <tt>'.
2484: $ENV{'form.usymb'}.'</tt>');
2485: }
2486: }
2487: #
2488: # Check user permissions
2489: if (($sheet->{'sheettype'} eq 'classcalc' ) ||
2490: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
2491: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
2492: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
2493: $r->print('<h1>Access Permission Denied</h1>'.
2494: '</form></body></html>');
2495: return OK;
2496: }
2497: }
2498: # Additional options
2499: $r->print('<br />'.
2500: '<input type="submit" name="forcerecalc" '.
2501: 'value="Completely Recalculate Sheet"><p>');
2502: if ($sheet->{'sheettype'} eq 'assesscalc') {
2503: $r->print('<p><font size=+2>'.
2504: '<a href="/adm/studentcalc?'.
2505: 'uname='.$sheet->{'uname'}.
2506: '&udom='.$sheet->{'udom'}.'">'.
2507: 'Level up: Student Sheet</a></font><p>');
2508: }
2509: if (($sheet->{'sheettype'} eq 'studentcalc') &&
2510: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
2511: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
2512: 'Level up: Course Sheet</a></font><p>');
2513: }
2514: # Save dialog
2515: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2516: my $fname=$ENV{'form.ufn'};
2517: $fname=~s/\_[^\_]+$//;
2518: if ($fname eq 'default') { $fname='course_default'; }
2519: $r->print('<input type=submit name=saveas value="Save as ...">'.
2520: '<input type=text size=20 name=newfn value="'.$fname.'">'.
2521: 'make default: <input type=checkbox name="makedefufn"><p>');
2522: }
2523: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
2524: # Load dialog
2525: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2526: $r->print('<p><input type=submit name=load value="Load ...">'.
2527: '<select name="loadthissheet">'.
2528: '<option name="default">Default</option>');
2529: foreach (&othersheets($sheet)) {
2530: $r->print('<option name="'.$_.'"');
2531: if ($ENV{'form.ufn'} eq $_) {
2532: $r->print(' selected');
2533: }
2534: $r->print('>'.$_.'</option>');
2535: }
2536: $r->print('</select><p>');
2537: if ($sheet->{'sheettype'} eq 'studentcalc') {
2538: &setothersheets($sheet,
2539: &othersheets($sheet,'assesscalc'));
2540: }
2541: }
2542: # Cached sheets
2543: &expirationdates();
2544: undef %oldsheets;
2545: undef %loadedcaches;
2546: if ($sheet->{'sheettype'} eq 'classcalc') {
2547: $r->print("Loading previously calculated student sheets ...\n");
2548: $r->rflush();
2549: &cachedcsheets();
2550: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
2551: $r->print("Loading previously calculated assessment sheets ...\n");
2552: $r->rflush();
2553: &cachedssheets($sheet->{'uname'},$sheet->{'udom'},$sheet->{'uhome'});
2554: }
2555: # Update sheet, load rows
2556: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2557: $r->rflush();
2558: #
2559: &updatesheet($sheet);
2560: $r->print("Updated rows, loading row data ...\n");
2561: $r->rflush();
2562: #
2563: &loadrows($sheet,$r);
2564: $r->print("Loaded row data, calculating sheet ...<br>\n");
2565: $r->rflush();
2566: #
2567: my $calcoutput=&calcsheet($sheet);
2568: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2569: # See if something to save
2570: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2571: my $fname='';
2572: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2573: $fname=~s/\W/\_/g;
2574: if ($fname eq 'default') { $fname='course_default'; }
2575: $fname.='_'.$sheet->{'sheettype'};
2576: $sheet->{'filename'} = $fname;
2577: $ENV{'form.ufn'}=$fname;
2578: $r->print('<p>Saving spreadsheet: '.
2579: &writesheet($sheet,$ENV{'form.makedefufn'}).
2580: '<p>');
2581: }
2582: }
2583: #
2584: # Write the modified worksheet
2585: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'<p>');
2586: &tmpwrite($sheet);
2587: if ($sheet->{'sheettype'} eq 'studentcalc') {
2588: $r->print('<br>Show rows with empty A column: ');
2589: } else {
2590: $r->print('<br>Show empty rows: ');
2591: }
2592: #
2593: $r->print(&hiddenfield('userselhidden','true').
2594: '<input type="checkbox" name="showall" onClick="submit()"');
2595: #
2596: if ($ENV{'form.showall'}) {
2597: $r->print(' checked');
2598: } else {
2599: unless ($ENV{'form.userselhidden'}) {
2600: unless
2601: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2602: $r->print(' checked');
2603: $ENV{'form.showall'}=1;
2604: }
2605: }
2606: }
2607: $r->print('>');
2608: #
2609: # CSV format checkbox (classcalc sheets only)
2610: $r->print(' Output CSV format: <input type="checkbox" '.
2611: 'name="showcsv" onClick="submit()"');
2612: $r->print(' checked') if ($ENV{'form.showcsv'});
2613: $r->print('>');
2614: if ($sheet->{'sheettype'} eq 'classcalc') {
2615: $r->print(' Student Status: '.
2616: &Apache::lonhtmlcommon::StatusOptions
2617: ($ENV{'form.Status'},'sheet'));
2618: }
2619: #
2620: # Buttons to insert rows
2621: $r->print(<<ENDINSERTBUTTONS);
2622: <br>
2623: <input type='button' onClick='insertrow("top");'
2624: value='Insert Row Top'>
2625: <input type='button' onClick='insertrow("bottom");'
2626: value='Insert Row Bottom'><br>
2627: ENDINSERTBUTTONS
2628: # Print out sheet
2629: &outsheet($r,$sheet);
2630: $r->print('</form></body></html>');
2631: # Done
2632: return OK;
2633: }
2634:
2635: 1;
2636: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonspreadsheet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface