1: #
2: # $Id: lonspreadsheet.pm,v 1.121 2002/10/22 13:13:15 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: $lower=~/([A-Za-z]|\*)(\d+|\*)/;
127: my $la=$1;
128: my $ld=$2;
129:
130: $upper=~/([A-Za-z]|\*)(\d+|\*)/;
131: my $ua=$1;
132: my $ud=$2;
133: my $alpha='';
134: my $num='';
135:
136: if (($la eq '*') || ($ua eq '*')) {
137: $alpha='[A-Za-z]';
138: } else {
139: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
140: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
141: $alpha='['.$la.'-'.$ua.']';
142: } else {
143: $alpha='['.$la.'-Za-'.$ua.']';
144: }
145: }
146: if (($ld eq '*') || ($ud eq '*')) {
147: $num='\d+';
148: } else {
149: if (length($ld)!=length($ud)) {
150: $num.='(';
151: foreach ($ld=~m/\d/g) {
152: $num.='['.$_.'-9]';
153: }
154: if (length($ud)-length($ld)>1) {
155: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
156: }
157: $num.='|';
158: foreach ($ud=~m/\d/g) {
159: $num.='[0-'.$_.']';
160: }
161: $num.=')';
162: } else {
163: my @lda=($ld=~m/\d/g);
164: my @uda=($ud=~m/\d/g);
165: my $i;
166: my $j=0;
167: my $notdone=1;
168: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
169: if ($lda[$i]==$uda[$i]) {
170: $num.=$lda[$i];
171: $j=$i;
172: } else {
173: $notdone=0;
174: }
175: }
176: if ($j<$#lda-1) {
177: $num.='('.$lda[$j+1];
178: for ($i=$j+2;$i<=$#lda;$i++) {
179: $num.='['.$lda[$i].'-9]';
180: }
181: if ($uda[$j+1]-$lda[$j+1]>1) {
182: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
183: ($#lda-$j-1).'}';
184: }
185: $num.='|'.$uda[$j+1];
186: for ($i=$j+2;$i<=$#uda;$i++) {
187: $num.='[0-'.$uda[$i].']';
188: }
189: $num.=')';
190: } else {
191: if ($lda[$#lda]!=$uda[$#uda]) {
192: $num.='['.$lda[$#lda].'-'.$uda[$#uda].']';
193: }
194: }
195: }
196: }
197: return '^'.$alpha.$num."\$";
198: }
199:
200:
201:
202: sub initsheet {
203: my $safeeval = new Safe(shift);
204: my $safehole = new Safe::Hole;
205: $safeeval->permit("entereval");
206: $safeeval->permit(":base_math");
207: $safeeval->permit("sort");
208: $safeeval->deny(":base_io");
209: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
210: $safehole->wrap(\&Apache::lonspreadsheet::mask,$safeeval,'&mask');
211: $safehole->wrap(\&Apache::lonspreadsheet::templaterow,$safeeval,'&templaterow');
212: $safeeval->share('$@');
213: my $code=<<'ENDDEFS';
214: # ---------------------------------------------------- Inside of the safe space
215:
216: #
217: # f: formulas
218: # t: intermediate format (variable references expanded)
219: # v: output values
220: # c: preloaded constants (A-column)
221: # rl: row label
222: # os: other spreadsheets (for student spreadsheet only)
223:
224: undef %sheet_values; # Holds the (computed, final) values for the sheet
225: # This is only written to by &calc, the spreadsheet computation routine.
226: # It is read by many functions
227: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
228: # which does the translation of strings like C5 into the value in C5.
229: # Used in &calc - %t holds the values that are actually eval'd.
230: undef %f; # Holds the formulas for each cell. This is the users
231: # (spreadsheet authors) data for each cell.
232: # set by &setformulas and returned by &getformulas
233: # &setformulas is called by &readsheet, &tmpread, &updateclasssheet,
234: # &updatestudentassesssheet, &loadstudent, &loadcourse
235: # &getformulas is called by &writesheet, &tmpwrite, &updateclasssheet,
236: # &updatestudentassesssheet, &loadstudent, &loadcourse, &loadassessment,
237: undef %c; # Holds the constants for a sheet. In the assessment
238: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
239: # &sett, and &setconstants. There is no &getconstants.
240: # &setconstants is called by &loadstudent, &loadcourse, &load assessment,
241: undef %rowlabel; # Holds the 'prefix' for each row. Set by &setrowlabels.
242: # &setrowlabels is called by &updateclasssheet, &updatestudentassesssheet,
243: undef @os; # Holds the names of other spreadsheets - this is used to specify
244: # the spreadsheets that are available for the assessment sheet.
245: # Set by &setothersheets. &setothersheets is called by &handler. A
246: # related subroutine is &othersheets.
247:
248: $maxrow = 0;
249: $sheettype = '';
250:
251: # filename/reference of the sheet
252: $filename = '';
253:
254: # user data
255: $uname = '';
256: $uhome = '';
257: $udom = '';
258:
259: # course data
260:
261: $csec = '';
262: $chome= '';
263: $cnum = '';
264: $cdom = '';
265: $cid = '';
266: $coursefilename = '';
267:
268: # symb
269:
270: $usymb = '';
271:
272: # error messages
273: $errormsg = '';
274:
275:
276: #-------------------------------------------------------
277:
278: =item UWCALC(hashname,modules,units,date)
279:
280: returns the proportion of the module
281: weights not previously completed by the student.
282:
283: =over 4
284:
285: =item hashname
286:
287: name of the hash the module dates have been inserted into
288:
289: =item modules
290:
291: reference to a cell which contains a comma deliminated list of modules
292: covered by the assignment.
293:
294: =item units
295:
296: reference to a cell which contains a comma deliminated list of module
297: weights with respect to the assignment
298:
299: =item date
300:
301: reference to a cell which contains the date the assignment was completed.
302:
303: =back
304:
305: =cut
306:
307: #-------------------------------------------------------
308: sub UWCALC {
309: my ($hashname,$modules,$units,$date) = @_;
310: my @Modules = split(/,/,$modules);
311: my @Units = split(/,/,$units);
312: my $total_weight;
313: foreach (@Units) {
314: $total_weight += $_;
315: }
316: my $usum=0;
317: for (my $i=0; $i<=$#Modules; $i++) {
318: if (&HASH($hashname,$Modules[$i]) eq $date) {
319: $usum += $Units[$i];
320: }
321: }
322: return $usum/$total_weight;
323: }
324:
325: #-------------------------------------------------------
326:
327: =item CDLSUM(list)
328:
329: returns the sum of the elements in a cell which contains
330: a Comma Deliminate List of numerical values.
331: 'list' is a reference to a cell which contains a comma deliminated list.
332:
333: =cut
334:
335: #-------------------------------------------------------
336: sub CDLSUM {
337: my ($list)=@_;
338: my $sum;
339: foreach (split/,/,$list) {
340: $sum += $_;
341: }
342: return $sum;
343: }
344:
345: #-------------------------------------------------------
346:
347: =item CDLITEM(list,index)
348:
349: returns the item at 'index' in a Comma Deliminated List.
350:
351: =over 4
352:
353: =item list
354:
355: reference to a cell which contains a comma deliminated list.
356:
357: =item index
358:
359: the Perl index of the item requested (first element in list has
360: an index of 0)
361:
362: =back
363:
364: =cut
365:
366: #-------------------------------------------------------
367: sub CDLITEM {
368: my ($list,$index)=@_;
369: my @Temp = split/,/,$list;
370: return $Temp[$index];
371: }
372:
373: #-------------------------------------------------------
374:
375: =item CDLHASH(name,key,value)
376:
377: loads a comma deliminated list of keys into
378: the hash 'name', all with a value of 'value'.
379:
380: =over 4
381:
382: =item name
383:
384: name of the hash.
385:
386: =item key
387:
388: (a pointer to) a comma deliminated list of keys.
389:
390: =item value
391:
392: a single value to be entered for each key.
393:
394: =back
395:
396: =cut
397:
398: #-------------------------------------------------------
399: sub CDLHASH {
400: my ($name,$key,$value)=@_;
401: my @Keys;
402: my @Values;
403: # Check to see if we have multiple $key values
404: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
405: my $keymask = &mask($key);
406: # Assume the keys are addresses
407: my @Temp = grep /$keymask/,keys(%sheet_values);
408: @Keys = $sheet_values{@Temp};
409: } else {
410: $Keys[0]= $key;
411: }
412: my @Temp;
413: foreach $key (@Keys) {
414: @Temp = (@Temp, split/,/,$key);
415: }
416: @Keys = @Temp;
417: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
418: my $valmask = &mask($value);
419: my @Temp = grep /$valmask/,keys(%sheet_values);
420: @Values =$sheet_values{@Temp};
421: } else {
422: $Values[0]= $value;
423: }
424: $value = $Values[0];
425: # Add values to hash
426: for (my $i = 0; $i<=$#Keys; $i++) {
427: my $key = $Keys[$i];
428: if (! exists ($hashes{$name}->{$key})) {
429: $hashes{$name}->{$key}->[0]=$value;
430: } else {
431: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
432: $hashes{$name}->{$key} = \@Temp;
433: }
434: }
435: return "hash '$name' updated";
436: }
437:
438: #-------------------------------------------------------
439:
440: =item GETHASH(name,key,index)
441:
442: returns the element in hash 'name'
443: reference by the key 'key', at index 'index' in the values list.
444:
445: =cut
446:
447: #-------------------------------------------------------
448: sub GETHASH {
449: my ($name,$key,$index)=@_;
450: if (! defined($index)) {
451: $index = 0;
452: }
453: if ($key =~ /^[A-z]\d+$/) {
454: $key = $sheet_values{$key};
455: }
456: return $hashes{$name}->{$key}->[$index];
457: }
458:
459: #-------------------------------------------------------
460:
461: =item CLEARHASH(name)
462:
463: clears all the values from the hash 'name'
464:
465: =item CLEARHASH(name,key)
466:
467: clears all the values from the hash 'name' associated with the given key.
468:
469: =cut
470:
471: #-------------------------------------------------------
472: sub CLEARHASH {
473: my ($name,$key)=@_;
474: if (defined($key)) {
475: if (exists($hashes{$name}->{$key})) {
476: $hashes{$name}->{$key}=undef;
477: return "hash '$name' key '$key' cleared";
478: }
479: } else {
480: if (exists($hashes{$name})) {
481: $hashes{$name}=undef;
482: return "hash '$name' cleared";
483: }
484: }
485: return "Error in clearing hash";
486: }
487:
488: #-------------------------------------------------------
489:
490: =item HASH(name,key,value)
491:
492: loads values into an internal hash. If a key
493: already has a value associated with it, the values are sorted numerically.
494:
495: =item HASH(name,key)
496:
497: returns the 0th value in the hash 'name' associated with 'key'.
498:
499: =cut
500:
501: #-------------------------------------------------------
502: sub HASH {
503: my ($name,$key,$value)=@_;
504: my @Keys;
505: undef @Keys;
506: my @Values;
507: # Check to see if we have multiple $key values
508: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
509: my $keymask = &mask($key);
510: # Assume the keys are addresses
511: my @Temp = grep /$keymask/,keys(%sheet_values);
512: @Keys = $sheet_values{@Temp};
513: } else {
514: $Keys[0]= $key;
515: }
516: # If $value is empty, return the first value associated
517: # with the first key.
518: if (! $value) {
519: return $hashes{$name}->{$Keys[0]}->[0];
520: }
521: # Check to see if we have multiple $value(s)
522: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
523: my $valmask = &mask($value);
524: my @Temp = grep /$valmask/,keys(%sheet_values);
525: @Values =$sheet_values{@Temp};
526: } else {
527: $Values[0]= $value;
528: }
529: # Add values to hash
530: for (my $i = 0; $i<=$#Keys; $i++) {
531: my $key = $Keys[$i];
532: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
533: if (! exists ($hashes{$name}->{$key})) {
534: $hashes{$name}->{$key}->[0]=$value;
535: } else {
536: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
537: $hashes{$name}->{$key} = \@Temp;
538: }
539: }
540: return $Values[-1];
541: }
542:
543: #-------------------------------------------------------
544:
545: =item NUM(range)
546:
547: returns the number of items in the range.
548:
549: =cut
550:
551: #-------------------------------------------------------
552: sub NUM {
553: my $mask=mask(@_);
554: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
555: return $num;
556: }
557:
558: sub BIN {
559: my ($low,$high,$lower,$upper)=@_;
560: my $mask=mask($lower,$upper);
561: my $num=0;
562: foreach (grep /$mask/,keys(%sheet_values)) {
563: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
564: $num++;
565: }
566: }
567: return $num;
568: }
569:
570:
571: #-------------------------------------------------------
572:
573: =item SUM(range)
574:
575: returns the sum of items in the range.
576:
577: =cut
578:
579: #-------------------------------------------------------
580: sub SUM {
581: my $mask=mask(@_);
582: my $sum=0;
583: foreach (grep /$mask/,keys(%sheet_values)) {
584: $sum+=$sheet_values{$_};
585: }
586: return $sum;
587: }
588:
589: #-------------------------------------------------------
590:
591: =item MEAN(range)
592:
593: compute the average of the items in the range.
594:
595: =cut
596:
597: #-------------------------------------------------------
598: sub MEAN {
599: my $mask=mask(@_);
600: my $sum=0; my $num=0;
601: foreach (grep /$mask/,keys(%sheet_values)) {
602: $sum+=$sheet_values{$_};
603: $num++;
604: }
605: if ($num) {
606: return $sum/$num;
607: } else {
608: return undef;
609: }
610: }
611:
612: #-------------------------------------------------------
613:
614: =item STDDEV(range)
615:
616: compute the standard deviation of the items in the range.
617:
618: =cut
619:
620: #-------------------------------------------------------
621: sub STDDEV {
622: my $mask=mask(@_);
623: my $sum=0; my $num=0;
624: foreach (grep /$mask/,keys(%sheet_values)) {
625: $sum+=$sheet_values{$_};
626: $num++;
627: }
628: unless ($num>1) { return undef; }
629: my $mean=$sum/$num;
630: $sum=0;
631: foreach (grep /$mask/,keys(%sheet_values)) {
632: $sum+=($sheet_values{$_}-$mean)**2;
633: }
634: return sqrt($sum/($num-1));
635: }
636:
637: #-------------------------------------------------------
638:
639: =item PROD(range)
640:
641: compute the product of the items in the range.
642:
643: =cut
644:
645: #-------------------------------------------------------
646: sub PROD {
647: my $mask=mask(@_);
648: my $prod=1;
649: foreach (grep /$mask/,keys(%sheet_values)) {
650: $prod*=$sheet_values{$_};
651: }
652: return $prod;
653: }
654:
655: #-------------------------------------------------------
656:
657: =item MAX(range)
658:
659: compute the maximum of the items in the range.
660:
661: =cut
662:
663: #-------------------------------------------------------
664: sub MAX {
665: my $mask=mask(@_);
666: my $max='-';
667: foreach (grep /$mask/,keys(%sheet_values)) {
668: unless ($max) { $max=$sheet_values{$_}; }
669: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
670: }
671: return $max;
672: }
673:
674: #-------------------------------------------------------
675:
676: =item MIN(range)
677:
678: compute the minimum of the items in the range.
679:
680: =cut
681:
682: #-------------------------------------------------------
683: sub MIN {
684: my $mask=mask(@_);
685: my $min='-';
686: foreach (grep /$mask/,keys(%sheet_values)) {
687: unless ($max) { $max=$sheet_values{$_}; }
688: if (($sheet_values{$_}<$min) || ($min eq '-')) {
689: $min=$sheet_values{$_};
690: }
691: }
692: return $min;
693: }
694:
695: #-------------------------------------------------------
696:
697: =item SUMMAX(num,lower,upper)
698:
699: compute the sum of the largest 'num' items in the range from
700: 'lower' to 'upper'
701:
702: =cut
703:
704: #-------------------------------------------------------
705: sub SUMMAX {
706: my ($num,$lower,$upper)=@_;
707: my $mask=mask($lower,$upper);
708: my @inside=();
709: foreach (grep /$mask/,keys(%sheet_values)) {
710: push (@inside,$sheet_values{$_});
711: }
712: @inside=sort(@inside);
713: my $sum=0; my $i;
714: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
715: $sum+=$inside[$i];
716: }
717: return $sum;
718: }
719:
720: #-------------------------------------------------------
721:
722: =item SUMMIN(num,lower,upper)
723:
724: compute the sum of the smallest 'num' items in the range from
725: 'lower' to 'upper'
726:
727: =cut
728:
729: #-------------------------------------------------------
730: sub SUMMIN {
731: my ($num,$lower,$upper)=@_;
732: my $mask=mask($lower,$upper);
733: my @inside=();
734: foreach (grep /$mask/,keys(%sheet_values)) {
735: $inside[$#inside+1]=$sheet_values{$_};
736: }
737: @inside=sort(@inside);
738: my $sum=0; my $i;
739: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
740: $sum+=$inside[$i];
741: }
742: return $sum;
743: }
744:
745: #-------------------------------------------------------
746:
747: =item MINPARM(parametername)
748:
749: Returns the minimum value of the parameters matching the parametername.
750: parametername should be a string such as 'duedate'.
751:
752: =cut
753:
754: #-------------------------------------------------------
755: sub MINPARM {
756: my ($expression) = @_;
757: my $min = undef;
758: study($expression);
759: foreach $parameter (keys(%c)) {
760: next if ($parameter !~ /$expression/);
761: if ((! defined($min)) || ($min > $c{$parameter})) {
762: $min = $c{$parameter}
763: }
764: }
765: return $min;
766: }
767:
768: #-------------------------------------------------------
769:
770: =item MAXPARM(parametername)
771:
772: Returns the maximum value of the parameters matching the input parameter name.
773: parametername should be a string such as 'duedate'.
774:
775: =cut
776:
777: #-------------------------------------------------------
778: sub MAXPARM {
779: my ($expression) = @_;
780: my $max = undef;
781: study($expression);
782: foreach $parameter (keys(%c)) {
783: next if ($parameter !~ /$expression/);
784: if ((! defined($min)) || ($max < $c{$parameter})) {
785: $max = $c{$parameter}
786: }
787: }
788: return $max;
789: }
790:
791: #--------------------------------------------------------
792: sub expandnamed {
793: my $expression=shift;
794: if ($expression=~/^\&/) {
795: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
796: my @vars=split(/\W+/,$formula);
797: my %values=();
798: undef %values;
799: foreach ( @vars ) {
800: my $varname=$_;
801: if ($varname=~/\D/) {
802: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
803: $varname=~s/$var/\(\\w\+\)/g;
804: foreach (keys(%c)) {
805: if ($_=~/$varname/) {
806: $values{$1}=1;
807: }
808: }
809: }
810: }
811: if ($func eq 'EXPANDSUM') {
812: my $result='';
813: foreach (keys(%values)) {
814: my $thissum=$formula;
815: $thissum=~s/$var/$_/g;
816: $result.=$thissum.'+';
817: }
818: $result=~s/\+$//;
819: return $result;
820: } else {
821: return 0;
822: }
823: } else {
824: # it is not a function, so it is a parameter name
825: # We should do the following:
826: # 1. Take the list of parameter names
827: # 2. look through the list for ones that match the parameter we want
828: # 3. If there are no collisions, return the one that matches
829: # 4. If there is a collision, return 'bad parameter name error'
830: my $returnvalue = '';
831: my @matches = ();
832: $#matches = -1;
833: study $expression;
834: foreach $parameter (keys(%c)) {
835: push @matches,$parameter if ($parameter =~ /$expression/);
836: }
837: if ($#matches == 0) {
838: $returnvalue = '$c{\''.$matches[0].'\'}';
839: } elsif ($#matches > 0) {
840: # more than one match. Look for a concise one
841: $returnvalue = "'non-unique parameter name : $expression'";
842: foreach (@matches) {
843: if (/^$expression$/) {
844: $returnvalue = '$c{\''.$_.'\'}';
845: }
846: }
847: } else {
848: $returnvalue = "'bad parameter name : $expression'";
849: }
850: return $returnvalue;
851: }
852: }
853:
854: sub sett {
855: %t=();
856: my $pattern='';
857: if ($sheettype eq 'assesscalc') {
858: $pattern='A';
859: } else {
860: $pattern='[A-Z]';
861: }
862: # Deal with the template row
863: foreach (keys(%f)) {
864: next if ($_!~/template\_(\w)/);
865: my $col=$1;
866: next if ($col=~/^$pattern/);
867: foreach (keys(%f)) {
868: next if ($_!~/A(\d+)/);
869: my $trow=$1;
870: next if (! $trow);
871: # Get the name of this cell
872: my $lb=$col.$trow;
873: # Grab the template declaration
874: $t{$lb}=$f{'template_'.$col};
875: # Replace '#' with the row number
876: $t{$lb}=~s/\#/$trow/g;
877: # Replace '....' with ','
878: $t{$lb}=~s/\.\.+/\,/g;
879: # Replace 'A0' with the value from 'A0'
880: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
881: # Replace parameters
882: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
883: }
884: }
885: # Deal with the normal cells
886: foreach (keys(%f)) {
887: if (exists($f{$_}) && ($_!~/template\_/)) {
888: my $matches=($_=~/^$pattern(\d+)/);
889: if (($matches) && ($1)) {
890: unless ($f{$_}=~/^\!/) {
891: $t{$_}=$c{$_};
892: }
893: } else {
894: $t{$_}=$f{$_};
895: $t{$_}=~s/\.\.+/\,/g;
896: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
897: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
898: }
899: }
900: }
901: # For inserted lines, [B-Z] is also valid
902: unless ($sheettype eq 'assesscalc') {
903: foreach (keys(%f)) {
904: if ($_=~/[B-Z](\d+)/) {
905: if ($f{'A'.$1}=~/^[\~\-]/) {
906: $t{$_}=$f{$_};
907: $t{$_}=~s/\.\.+/\,/g;
908: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
909: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
910: }
911: }
912: }
913: }
914: # For some reason 'A0' gets special treatment... This seems superfluous
915: # but I imagine it is here for a reason.
916: $t{'A0'}=$f{'A0'};
917: $t{'A0'}=~s/\.\.+/\,/g;
918: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
919: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
920: }
921:
922: sub calc {
923: undef %sheet_values;
924: &sett();
925: my $notfinished=1;
926: my $lastcalc='';
927: my $depth=0;
928: while ($notfinished) {
929: $notfinished=0;
930: foreach (keys(%t)) {
931: my $old=$sheet_values{$_};
932: $sheet_values{$_}=eval $t{$_};
933: if ($@) {
934: undef %sheet_values;
935: return $_.': '.$@;
936: }
937: if ($sheet_values{$_} ne $old) { $notfinished=1; $lastcalc=$_; }
938: }
939: $depth++;
940: if ($depth>100) {
941: undef %sheet_values;
942: return $lastcalc.': Maximum calculation depth exceeded';
943: }
944: }
945: return '';
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 outrowassess {
953: # $n is the current row number
954: my $n=shift;
955: my $csv = shift;
956: my @cols=();
957: if ($n) {
958: my ($usy,$ufn)=split(/__&&&\__/,$f{'A'.$n});
959: if ($rowlabel{$usy}) {
960: $cols[0]=$rowlabel{$usy};
961: if (! $csv) {
962: $cols[0].='<br>'.
963: '<select name="sel_'.$n.'" onChange="changesheet('.$n.')">'.
964: '<option name="default">Default</option>';
965: }
966: } else {
967: $cols[0]='';
968: }
969: if (! $csv) {
970: foreach (@os) {
971: $cols[0].='<option name="'.$_.'"';
972: if ($ufn eq $_) {
973: $cols[0].=' selected';
974: }
975: $cols[0].='>'.$_.'</option>';
976: }
977: $cols[0].='</select>';
978: }
979: } else {
980: $cols[0]='<b><font size=+1>Export</font></b>';
981: }
982: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
983: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
984: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
985: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
986: my $fm=$f{$_.$n};
987: $fm=~s/[\'\"]/\&\#34;/g;
988: push(@cols,"'$_$n','$fm'".'___eq___'.$sheet_values{$_.$n});
989: }
990: return @cols;
991: }
992:
993: sub outrow {
994: my $n=shift;
995: my @cols=();
996: if ($n) {
997: $cols[0]=$rowlabel{$f{'A'.$n}};
998: } else {
999: $cols[0]='<b><font size=+1>Export</font></b>';
1000: }
1001: foreach ('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: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1004: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1005: my $fm=$f{$_.$n};
1006: $fm=~s/[\'\"]/\&\#34;/g;
1007: push(@cols,"'$_$n','$fm'".'___eq___'.$sheet_values{$_.$n});
1008: }
1009: return @cols;
1010: }
1011:
1012: sub templaterow {
1013: my @cols=();
1014: $cols[0]='<b><font size=+1>Template</font></b>';
1015: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1016: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1017: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1018: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1019: my $fm=$f{'template_'.$_};
1020: $fm=~s/[\'\"]/\&\#34;/g;
1021: push(@cols,"'template_$_','$fm'".'___eq___'.$fm);
1022: }
1023: return @cols;
1024: }
1025:
1026:
1027: # ------------------------------------------- End of "Inside of the safe space"
1028: ENDDEFS
1029: $safeeval->reval($code);
1030: return $safeeval;
1031: }
1032:
1033:
1034: # ------------------------------------------------ Add or change formula values
1035: sub setformulas {
1036: my ($sheet)=shift;
1037: %{$sheet->{'safe'}->varglob('f')}=%{$sheet->{'f'}};
1038: }
1039:
1040: # ------------------------------------------------ Add or change formula values
1041: sub setconstants {
1042: my ($sheet)=shift;
1043: return %{$sheet->{'safe'}->varglob('c')}=%{$sheet->{'constants'}};
1044: }
1045:
1046: # --------------------------------------------- Set names of other spreadsheets
1047: sub setothersheets {
1048: my $sheet = shift;
1049: my @othersheets = @_;
1050: $sheet->{'othersheets'} = \@othersheets;
1051: @{$sheet->{'safe'}->varglob('os')}=@othersheets;
1052: return;
1053: }
1054:
1055: # ------------------------------------------------ Add or change formula values
1056: sub setrowlabels {
1057: my $sheet=shift;
1058: %{$sheet->{'safe'}->varglob('rowlabel')}=%{$sheet->{'rowlabel'}};
1059: }
1060:
1061: # ------------------------------------------------------- Calculate spreadsheet
1062: sub calcsheet {
1063: my $sheet=shift;
1064: my $result = $sheet->{'safe'}->reval('&calc();');
1065: %{$sheet->{'values'}} = %{$sheet->{'safe'}->varglob('sheet_values')};
1066: return $result;
1067: }
1068:
1069: # ---------------------------------------------------------------- Get formulas
1070: sub getformulas {
1071: my $sheet = shift;
1072: return %{$sheet->{'safe'}->varglob('f')};
1073: }
1074:
1075: # ----------------------------------------------------- Get value of $f{'A'.$n}
1076: sub getfa {
1077: my $sheet = shift;
1078: my ($n)=@_;
1079: return $sheet->{'safe'}->reval('$f{"A'.$n.'"}');
1080: }
1081:
1082: # ------------------------------------------------------------- Export of A-row
1083: sub exportdata {
1084: my $sheet=shift;
1085: my @exportarray=();
1086: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1087: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1088: push(@exportarray,$sheet->{'values'}->{$_.'0'});
1089: }
1090: return @exportarray;
1091: }
1092:
1093: # ========================================================== End of Spreadsheet
1094: # =============================================================================
1095:
1096: #
1097: # Procedures for screen output
1098: #
1099: # --------------------------------------------- Produce output row n from sheet
1100:
1101: sub rown {
1102: my ($sheet,$n)=@_;
1103: my $defaultbg;
1104: my $rowdata='';
1105: my $dataflag=0;
1106: unless ($n eq '-') {
1107: $defaultbg=((($n-1)/5)==int(($n-1)/5))?'#E0E0':'#FFFF';
1108: } else {
1109: $defaultbg='#E0FF';
1110: }
1111: unless ($ENV{'form.showcsv'}) {
1112: $rowdata.="\n<tr><td><b><font size=+1>$n</font></b></td>";
1113: } else {
1114: $rowdata.="\n".'"'.$n.'"';
1115: }
1116: my $showf=0;
1117: my $proc;
1118: my $maxred=1;
1119: my $sheettype=$sheet->{'sheettype'};
1120: if ($sheettype eq 'studentcalc') {
1121: $proc='&outrowassess';
1122: $maxred=26;
1123: } else {
1124: $proc='&outrow';
1125: }
1126: if ($sheettype eq 'assesscalc') {
1127: $maxred=1;
1128: } else {
1129: $maxred=26;
1130: }
1131: if (&getfa($sheet,$n)=~/^[\~\-]/) { $maxred=1; }
1132: if ($n eq '-') {
1133: $proc='&templaterow';
1134: $n=-1;
1135: $dataflag=1;
1136: }
1137: foreach ($sheet->{'safe'}->reval($proc.'('.$n.','.$ENV{'form.showcsv'}.')')) {
1138: my $bgcolor=$defaultbg.((($showf-1)/5==int(($showf-1)/5))?'99':'DD');
1139: my ($fm,$vl)=split(/\_\_\_eq\_\_\_/,$_);
1140: if ((($vl ne '') || ($vl eq '0')) &&
1141: (($showf==1) || ($sheettype ne 'studentcalc'))) { $dataflag=1; }
1142: if ($showf==0) { $vl=$_; }
1143: unless ($ENV{'form.showcsv'}) {
1144: if ($showf<=$maxred) { $bgcolor='#FFDDDD'; }
1145: if (($n==0) && ($showf<=26)) { $bgcolor='#CCCCFF'; }
1146: if (($showf>$maxred) || ((!$n) && ($showf>0))) {
1147: if ($vl eq '') {
1148: $vl='<font size=+2 color='.$bgcolor.'>#</font>';
1149: }
1150: $rowdata.='<td bgcolor='.$bgcolor.'>';
1151: if ($ENV{'request.role'} =~ /^st\./) {
1152: $rowdata.=$vl;
1153: } else {
1154: $rowdata.='<a href="javascript:celledit('.$fm.');">'.
1155: $vl.'</a>';
1156: }
1157: $rowdata.='</td>';
1158: } else {
1159: $rowdata.='<td bgcolor='.$bgcolor.'> '.$vl.' </td>';
1160: }
1161: } else {
1162: $rowdata.=',"'.$vl.'"';
1163: }
1164: $showf++;
1165: } # End of foreach($safeval...)
1166: if ($ENV{'form.showall'} || ($dataflag)) {
1167: return $rowdata.($ENV{'form.showcsv'}?'':'</tr>');
1168: } else {
1169: return '';
1170: }
1171: }
1172:
1173: # ------------------------------------------------------------- Print out sheet
1174:
1175: sub outsheet {
1176: my ($r,$sheet)=@_;
1177: my $maxred = 26; # The maximum number of cells to show as
1178: # red (uneditable)
1179: # To make student sheets uneditable could we
1180: # set $maxred = 52?
1181: #
1182: my $realm='Course'; # 'assessment', 'user', or 'course' sheet
1183: if ($sheet->{'sheettype'} eq 'assesscalc') {
1184: $maxred=1;
1185: $realm='Assessment';
1186: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1187: $maxred=26;
1188: $realm='User';
1189: }
1190: #
1191: # Column label
1192: my $tabledata;
1193: if ($ENV{'form.showcsv'}) {
1194: $tabledata='<pre>';
1195: } else {
1196: $tabledata='<table border=2><tr><th colspan=2 rowspan=2>'.
1197: '<font size=+2>'.$realm.'</font></th>'.
1198: '<td bgcolor=#FFDDDD colspan='.$maxred.
1199: '><b><font size=+1>Import</font></b></td>'.
1200: '<td colspan='.(52-$maxred).
1201: '><b><font size=+1>Calculations</font></b></td></tr><tr>';
1202: my $showf=0;
1203: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1204: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
1205: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
1206: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
1207: $showf++;
1208: if ($showf<=$maxred) {
1209: $tabledata.='<td bgcolor="#FFDDDD">';
1210: } else {
1211: $tabledata.='<td>';
1212: }
1213: $tabledata.="<b><font size=+1>$_</font></b></td>";
1214: }
1215: $tabledata.='</tr>'.&rown($sheet,'-').
1216: &rown($sheet,0);
1217: }
1218: $r->print($tabledata);
1219: #
1220: # Prepare to output rows
1221: my $row;
1222: #
1223: my @sortby=();
1224: my @sortidx=();
1225: for ($row=1;$row<=$sheet->{'maxrow'};$row++) {
1226: push (@sortby, $sheet->{'safe'}->reval('$f{"A'.$row.'"}'));
1227: push (@sortidx, $row-1);
1228: }
1229: @sortidx=sort { lc($sortby[$a]) cmp lc($sortby[$b]); } @sortidx;
1230: #
1231: # Determine the type of child spreadsheets
1232: my $what='Student';
1233: if ($sheet->{'sheettype'} eq 'assesscalc') {
1234: $what='Item';
1235: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1236: $what='Assessment';
1237: }
1238: #
1239: # Loop through the rows and output them one at a time
1240: my $n=0;
1241: for ($row=0;$row<$sheet->{'maxrow'};$row++) {
1242: my $thisrow=&rown($sheet,$sortidx[$row]+1);
1243: if ($thisrow) {
1244: if (($n/25==int($n/25)) && (!$ENV{'form.showcsv'})) {
1245: $r->print("</table>\n<br>\n");
1246: $r->rflush();
1247: $r->print('<table border=2><tr><td> <td>'.$what.'</td>');
1248: $r->print('<td>'.
1249: join('</td><td>',
1250: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
1251: 'abcdefghijklmnopqrstuvwxyz'))).
1252: "</td></tr>\n");
1253: }
1254: $n++;
1255: $r->print($thisrow);
1256: }
1257: }
1258: $r->print($ENV{'form.showcsv'}?'</pre>':'</table>');
1259: }
1260:
1261: #
1262: # ----------------------------------------------- Read list of available sheets
1263: #
1264: sub othersheets {
1265: my ($sheet,$stype)=@_;
1266: $stype = $sheet->{'sheettype'} if (! defined($stype));
1267: #
1268: my $cnum = $sheet->{'cnum'};
1269: my $cdom = $sheet->{'cdom'};
1270: my $chome = $sheet->{'chome'};
1271: #
1272: my @alternatives=();
1273: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1274: my ($tmp) = keys(%results);
1275: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1276: @alternatives = sort (keys(%results));
1277: }
1278: return @alternatives;
1279: }
1280:
1281:
1282: #
1283: # -------------------------------------- Parse a spreadsheet
1284: #
1285: sub parse_sheet {
1286: # $sheetxml is a scalar reference or a scalar
1287: my ($sheetxml) = @_;
1288: if (! ref($sheetxml)) {
1289: my $tmp = $sheetxml;
1290: $sheetxml = \$tmp;
1291: }
1292: my %f;
1293: my $parser=HTML::TokeParser->new($sheetxml);
1294: my $token;
1295: while ($token=$parser->get_token) {
1296: if ($token->[0] eq 'S') {
1297: if ($token->[1] eq 'field') {
1298: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1299: $parser->get_text('/field');
1300: }
1301: if ($token->[1] eq 'template') {
1302: $f{'template_'.$token->[2]->{'col'}}=
1303: $parser->get_text('/template');
1304: }
1305: }
1306: }
1307: return \%f;
1308: }
1309:
1310: #
1311: # -------------------------------------- Read spreadsheet formulas for a course
1312: #
1313: sub readsheet {
1314: my ($sheet,$fn)=@_;
1315: #
1316: my $stype = $sheet->{'sheettype'};
1317: my $cnum = $sheet->{'cnum'};
1318: my $cdom = $sheet->{'cdom'};
1319: my $chome = $sheet->{'chome'};
1320: #
1321: if (! defined($fn)) {
1322: # There is no filename. Look for defaults in course and global, cache
1323: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1324: my %tmphash = &Apache::lonnet::get('environment',
1325: ['spreadsheet_default_'.$stype],
1326: $cdom,$cnum);
1327: my ($tmp) = keys(%tmphash);
1328: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1329: $fn = 'default_'.$stype;
1330: } else {
1331: $fn = $tmphash{'spreadsheet_default_'.$stype};
1332: }
1333: unless (($fn) && ($fn!~/^error\:/)) {
1334: $fn='default_'.$stype;
1335: }
1336: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1337: }
1338: }
1339: # $fn now has a value
1340: $sheet->{'filename'} = $fn;
1341: # see if sheet is cached
1342: my $fstring='';
1343: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1344: my %tmp = split(/___;___/,$fstring);
1345: $sheet->{'f'} = \%tmp;
1346: &setformulas($sheet);
1347: } else {
1348: # Not cached, need to read
1349: my %f=();
1350: if ($fn=~/^default\_/) {
1351: my $sheetxml='';
1352: my $fh;
1353: my $dfn=$fn;
1354: $dfn=~s/\_/\./g;
1355: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1356: $sheetxml=join('',<$fh>);
1357: } else {
1358: $sheetxml='<field row="0" col="A">"Error"</field>';
1359: }
1360: %f=%{&parse_sheet(\$sheetxml)};
1361: } elsif($fn=~/\/*\.spreadsheet$/) {
1362: my $sheetxml=&Apache::lonnet::getfile
1363: (&Apache::lonnet::filelocation('',$fn));
1364: if ($sheetxml == -1) {
1365: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1366: .$fn.'"</field>';
1367: }
1368: %f=%{&parse_sheet(\$sheetxml)};
1369: } else {
1370: my $sheet='';
1371: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1372: my ($tmp) = keys(%tmphash);
1373: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1374: foreach (keys(%tmphash)) {
1375: $f{$_}=$tmphash{$_};
1376: }
1377: }
1378: }
1379: # Cache and set
1380: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1381: $sheet->{'f'}=\%f;
1382: &setformulas($sheet);
1383: }
1384: }
1385:
1386: # -------------------------------------------------------- Make new spreadsheet
1387: sub makenewsheet {
1388: my ($uname,$udom,$stype,$usymb)=@_;
1389: my $sheet={};
1390: $sheet->{'uname'} = $uname;
1391: $sheet->{'udom'} = $udom;
1392: $sheet->{'sheettype'} = $stype;
1393: $sheet->{'usymb'} = $usymb;
1394: $sheet->{'cid'} = $ENV{'request.course.id'};
1395: $sheet->{'csec'} = $Section{$uname.':'.$udom};
1396: $sheet->{'coursefilename'} = $ENV{'request.course.fn'};
1397: $sheet->{'cnum'} = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1398: $sheet->{'cdom'} = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1399: $sheet->{'chome'} = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1400: $sheet->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
1401: #
1402: #
1403: $sheet->{'f'} = {};
1404: $sheet->{'constants'} = {};
1405: $sheet->{'othersheets'} = [];
1406: $sheet->{'rowlabel'} = {};
1407: #
1408: #
1409: $sheet->{'safe'}=&initsheet($sheet->{'sheettype'});
1410: #
1411: # Place all the %$sheet items into the safe space except the safe space
1412: # itself
1413: my $initstring = '';
1414: foreach (qw/uname udom sheettype usymb cid csec coursefilename
1415: cnum cdom chome uhome/) {
1416: $initstring.= qq{\$$_="$sheet->{$_}";};
1417: }
1418: $sheet->{'safe'}->reval($initstring);
1419: return $sheet;
1420: }
1421:
1422: # ------------------------------------------------------------ Save spreadsheet
1423: sub writesheet {
1424: my ($sheet,$makedef)=@_;
1425: my $cid=$sheet->{'cid'};
1426: if (&Apache::lonnet::allowed('opa',$cid)) {
1427: my %f=&getformulas($sheet);
1428: my $stype= $sheet->{'sheettype'};
1429: my $cnum = $sheet->{'cnum'};
1430: my $cdom = $sheet->{'cdom'};
1431: my $chome= $sheet->{'chome'};
1432: my $fn = $sheet->{'filename'};
1433: # Cache new sheet
1434: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1435: # Write sheet
1436: my $sheetdata='';
1437: foreach (keys(%f)) {
1438: unless ($f{$_} eq 'import') {
1439: $sheetdata.=&Apache::lonnet::escape($_).'='.
1440: &Apache::lonnet::escape($f{$_}).'&';
1441: }
1442: }
1443: $sheetdata=~s/\&$//;
1444: my $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.$fn.':'.
1445: $sheetdata,$chome);
1446: if ($reply eq 'ok') {
1447: $reply=&Apache::lonnet::reply('put:'.$cdom.':'.$cnum.':'.
1448: $stype.'_spreadsheets:'.
1449: &Apache::lonnet::escape($fn).
1450: '='.$ENV{'user.name'}.'@'.
1451: $ENV{'user.domain'},
1452: $chome);
1453: if ($reply eq 'ok') {
1454: if ($makedef) {
1455: return &Apache::lonnet::reply('put:'.$cdom.':'.$cnum.
1456: ':environment:'.
1457: 'spreadsheet_default_'.
1458: $stype.'='.
1459: &Apache::lonnet::escape($fn),
1460: $chome);
1461: }
1462: return $reply;
1463: }
1464: return $reply;
1465: }
1466: return $reply;
1467: }
1468: return 'unauthorized';
1469: }
1470:
1471: # ----------------------------------------------- Make a temp copy of the sheet
1472: # "Modified workcopy" - interactive only
1473: #
1474: sub tmpwrite {
1475: my ($sheet) = @_;
1476: my $fn=$ENV{'user.name'}.'_'.
1477: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1478: $sheet->{'filename'};
1479: $fn=~s/\W/\_/g;
1480: $fn=$tmpdir.$fn.'.tmp';
1481: my $fh;
1482: if ($fh=Apache::File->new('>'.$fn)) {
1483: print $fh join("\n",&getformulas($sheet));
1484: }
1485: }
1486:
1487: # ---------------------------------------------------------- Read the temp copy
1488: sub tmpread {
1489: my ($sheet,$nfield,$nform)=@_;
1490: my $fn=$ENV{'user.name'}.'_'.
1491: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1492: $sheet->{'filename'};
1493: $fn=~s/\W/\_/g;
1494: $fn=$tmpdir.$fn.'.tmp';
1495: my $fh;
1496: my %fo=();
1497: my $countrows=0;
1498: if ($fh=Apache::File->new($fn)) {
1499: my $name;
1500: while ($name=<$fh>) {
1501: chomp($name);
1502: my $value=<$fh>;
1503: chomp($value);
1504: $fo{$name}=$value;
1505: if ($name=~/^A(\d+)$/) {
1506: if ($1>$countrows) {
1507: $countrows=$1;
1508: }
1509: }
1510: }
1511: }
1512: if ($nform eq 'changesheet') {
1513: $fo{'A'.$nfield}=(split(/\_\_\&\&\&\_\_/,$fo{'A'.$nfield}))[0];
1514: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1515: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1516: }
1517: } elsif ($nfield eq 'insertrow') {
1518: $countrows++;
1519: my $newrow=substr('000000'.$countrows,-7);
1520: if ($nform eq 'top') {
1521: $fo{'A'.$countrows}='--- '.$newrow;
1522: } else {
1523: $fo{'A'.$countrows}='~~~ '.$newrow;
1524: }
1525: } else {
1526: if ($nfield) { $fo{$nfield}=$nform; }
1527: }
1528: $sheet->{'f'}=\%fo;
1529: &setformulas($sheet);
1530: }
1531:
1532: ##################################################
1533: ##################################################
1534:
1535: =pod
1536:
1537: =item &parmval()
1538:
1539: Determine the value of a parameter.
1540:
1541: Inputs: $what, the parameter needed, $sheet, the safe space
1542:
1543: Returns: The value of a parameter, or '' if none.
1544:
1545: This function cascades through the possible levels searching for a value for
1546: a parameter. The levels are checked in the following order:
1547: user, course (at section level and course level), map, and lonnet::metadata.
1548: This function uses %parmhash, which must be tied prior to calling it.
1549: This function also requires %courseopt and %useropt to be initialized for
1550: this user and course.
1551:
1552: =cut
1553:
1554: ##################################################
1555: ##################################################
1556: sub parmval {
1557: my ($what,$sheet)=@_;
1558: my $symb = $sheet->{'usymb'};
1559: unless ($symb) { return ''; }
1560: #
1561: my $cid = $sheet->{'cid'};
1562: my $csec = $sheet->{'csec'};
1563: my $uname = $sheet->{'uname'};
1564: my $udom = $sheet->{'udom'};
1565: my $result='';
1566: #
1567: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
1568: # Cascading lookup scheme
1569: my $rwhat=$what;
1570: $what =~ s/^parameter\_//;
1571: $what =~ s/\_([^\_]+)$/\.$1/;
1572: #
1573: my $symbparm = $symb.'.'.$what;
1574: my $mapparm = $mapname.'___(all).'.$what;
1575: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
1576: #
1577: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
1578: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
1579: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
1580: #
1581: my $courselevel = $usercourseprefix.'.'.$what;
1582: my $courselevelr = $usercourseprefix.'.'.$symbparm;
1583: my $courselevelm = $usercourseprefix.'.'.$mapparm;
1584: # fourth, check user
1585: if (defined($uname)) {
1586: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
1587: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
1588: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
1589: }
1590: # third, check course
1591: if (defined($csec)) {
1592: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
1593: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
1594: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
1595: }
1596: #
1597: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
1598: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
1599: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
1600: # second, check map parms
1601: my $thisparm = $parmhash{$symbparm};
1602: return $thisparm if (defined($thisparm));
1603: # first, check default
1604: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
1605: }
1606:
1607: # ---------------------------------------------- Update rows for course listing
1608: sub updateclasssheet {
1609: my ($sheet) = @_;
1610: my $cnum =$sheet->{'cnum'};
1611: my $cdom =$sheet->{'cdom'};
1612: my $cid =$sheet->{'cid'};
1613: my $chome =$sheet->{'chome'};
1614: #
1615: %Section = ();
1616:
1617: #
1618: # Read class list and row labels
1619: my $classlist = &Apache::loncoursedata::get_classlist();
1620: if (! defined($classlist)) {
1621: return 'Could not access course classlist';
1622: }
1623: #
1624: my %currentlist=();
1625: foreach my $student (keys(%$classlist)) {
1626: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
1627: $fullname,$status) = @{$classlist->{$student}};
1628: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
1629: my $rowlabel='';
1630: if ($ENV{'form.showcsv'}) {
1631: $rowlabel= '"'.join('","',($studentName,$studentDomain,
1632: $fullname,$studentSection,$id).'"');
1633: } else {
1634: $rowlabel='<a href="/adm/studentcalc?uname='.$studentName.
1635: '&udom='.$studentDomain.'">';
1636: $rowlabel.=$studentSection.' '.$id." ".$fullname;
1637: $rowlabel.='</a>';
1638: }
1639: $currentlist{$student}=$rowlabel;
1640: }
1641: }
1642: #
1643: # Find discrepancies between the course row table and this
1644: #
1645: my %f=&getformulas($sheet);
1646: my $changed=0;
1647: #
1648: $sheet->{'maxrow'}=0;
1649: my %existing=();
1650: #
1651: # Now obsolete rows
1652: foreach (keys(%f)) {
1653: if ($_=~/^A(\d+)/) {
1654: if ($1 > $sheet->{'maxrow'}) {
1655: $sheet->{'maxrow'}= $1;
1656: }
1657: $existing{$f{$_}}=1;
1658: unless ((defined($currentlist{$f{$_}})) || (!$1) ||
1659: ($f{$_}=~/^(~~~|---)/)) {
1660: $f{$_}='!!! Obsolete';
1661: $changed=1;
1662: }
1663: }
1664: }
1665: #
1666: # New and unknown keys
1667: foreach (sort keys(%currentlist)) {
1668: unless ($existing{$_}) {
1669: $changed=1;
1670: $sheet->{'maxrow'}++;
1671: $f{'A'.$sheet->{'maxrow'}}=$_;
1672: }
1673: }
1674: if ($changed) {
1675: $sheet->{'f'} = \%f;
1676: &setformulas($sheet,%f);
1677: }
1678: #
1679: $sheet->{'rowlabel'} = \%currentlist;
1680: &setrowlabels($sheet);
1681: }
1682:
1683: # ----------------------------------- Update rows for student and assess sheets
1684: sub updatestudentassesssheet {
1685: my ($sheet) = @_;
1686: my %bighash;
1687: my $stype=$sheet->{'sheettype'};
1688: my $uname=$sheet->{'uname'};
1689: my $udom =$sheet->{'udom'};
1690: $sheet->{'rowlabel'} = {};
1691: if ($updatedata
1692: {$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}) {
1693: %{$sheet->{'rowlabel'}}=split(/___;___/,
1694: $updatedata{$ENV{'request.course.fn'}.
1695: '_'.$stype.'_'.$uname.'_'.$udom});
1696: } else {
1697: # Tie hash
1698: tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
1699: &GDBM_READER(),0640);
1700: if (! tied(%bighash)) {
1701: return 'Could not access course data';
1702: }
1703: # Get all assessments
1704: my %allkeys=('timestamp' =>
1705: 'Timestamp of Last Transaction<br>timestamp',
1706: 'subnumber' =>
1707: 'Number of Submissions<br>subnumber',
1708: 'tutornumber' =>
1709: 'Number of Tutor Responses<br>tutornumber',
1710: 'totalpoints' =>
1711: 'Total Points Granted<br>totalpoints');
1712: my $adduserstr='';
1713: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})){
1714: $adduserstr='&uname='.$uname.'&udom='.$udom;
1715: }
1716: my %allassess;
1717: if (! $ENV{'form.showcsv'}) {
1718: %allassess =
1719: ('_feedback' =>'<a href="/adm/assesscalc?usymb=_feedback'.
1720: $adduserstr.'">Feedback</a>',
1721: '_evaluation' =>'<a href="/adm/assesscalc?usymb=_evaluation'.
1722: $adduserstr.'">Evaluation</a>',
1723: '_tutoring' =>'<a href="/adm/assesscalc?usymb=_tutoring'.
1724: $adduserstr.'">Tutoring</a>',
1725: '_discussion' =>'<a href="/adm/assesscalc?usymb=_discussion'.
1726: $adduserstr.'">Discussion</a>'
1727: );
1728: } else {
1729: %allassess =
1730: ('_feedback' => "Feedback",
1731: '_evaluation' => "Evaluation",
1732: '_tutoring' => "Tutoring",
1733: '_discussion' => "Discussion",
1734: );
1735: }
1736: while (($_,undef) = each(%bighash)) {
1737: next if ($_!~/^src\_(\d+)\.(\d+)$/);
1738: my $mapid=$1;
1739: my $resid=$2;
1740: my $id=$mapid.'.'.$resid;
1741: my $srcf=$bighash{$_};
1742: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1743: my $symb=
1744: &Apache::lonnet::declutter($bighash{'map_id_'.$mapid}).
1745: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
1746: if (! $ENV{'form.showcsv'}) {
1747: $allassess{$symb}=
1748: '<a href="/adm/assesscalc?usymb='.$symb.$adduserstr.'">'.
1749: $bighash{'title_'.$id}.'</a>';
1750: } else {
1751: $allassess{$symb}=$bighash{'title_'.$id};
1752: }
1753: next if ($stype ne 'assesscalc');
1754: foreach my $key (split(/\,/,
1755: &Apache::lonnet::metadata($srcf,'keys')
1756: )) {
1757: next if ($key !~ /^(stores|parameter)_/);
1758: my $display=
1759: &Apache::lonnet::metadata($srcf,$key.'.display');
1760: unless ($display) {
1761: $display.=
1762: &Apache::lonnet::metadata($srcf,$key.'.name');
1763: }
1764: $display.='<br>'.$key;
1765: $allkeys{$key}=$display;
1766: } # end of foreach
1767: }
1768: } # end of foreach (keys(%bighash))
1769: untie(%bighash);
1770: #
1771: # %allkeys has a list of storage and parameter displays by unikey
1772: # %allassess has a list of all resource displays by symb
1773: #
1774: if ($stype eq 'assesscalc') {
1775: $sheet->{'rowlabel'} = \%allkeys;
1776: } elsif ($stype eq 'studentcalc') {
1777: $sheet->{'rowlabel'} = \%allassess;
1778: }
1779: $updatedata{$ENV{'request.course.fn'}.'_'.$stype.'_'.$uname.'_'.$udom}=
1780: join('___;___',%{$sheet->{'rowlabel'}});
1781: # Get current from cache
1782: }
1783: # Find discrepancies between the course row table and this
1784: #
1785: my %f=&getformulas($sheet);
1786: my $changed=0;
1787:
1788: $sheet->{'maxrow'} = 0;
1789: my %existing=();
1790: # Now obsolete rows
1791: foreach (keys(%f)) {
1792: next if ($_!~/^A(\d+)/);
1793: if ($1 > $sheet->{'maxrow'}) {
1794: $sheet->{'maxrow'} = $1;
1795: }
1796: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1797: $existing{$usy}=1;
1798: unless ((exists($sheet->{'rowlabel'}->{$usy}) &&
1799: (defined($sheet->{'rowlabel'}->{$usy})) || (!$1) ||
1800: ($f{$_}=~/^(~~~|---)/))){
1801: $f{$_}='!!! Obsolete';
1802: $changed=1;
1803: } elsif ($ufn) {
1804: $sheet->{'rowlabel'}->{$usy}
1805: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn\&usymb\=/;
1806: }
1807: }
1808: # New and unknown keys
1809: foreach (keys(%{$sheet->{'rowlabel'}})) {
1810: unless ($existing{$_}) {
1811: $changed=1;
1812: $sheet->{'maxrow'}++;
1813: $f{'A'.$sheet->{'maxrow'}}=$_;
1814: }
1815: }
1816: if ($changed) {
1817: $sheet->{'f'} = \%f;
1818: &setformulas($sheet);
1819: }
1820: &setrowlabels($sheet);
1821: #
1822: undef %existing;
1823: }
1824:
1825: # ------------------------------------------------ Load data for one assessment
1826:
1827: sub loadstudent {
1828: my ($sheet)=@_;
1829: my %c=();
1830: my %f=&getformulas($sheet);
1831: $cachedassess=$sheet->{'uname'}.':'.$sheet->{'udom'};
1832: # Get ALL the student preformance data
1833: my @tmp = &Apache::lonnet::dump($sheet->{'cid'},
1834: $sheet->{'udom'},
1835: $sheet->{'uname'},
1836: undef);
1837: if ($tmp[0] !~ /^error:/) {
1838: %cachedstores = @tmp;
1839: }
1840: undef @tmp;
1841: #
1842: my @assessdata=();
1843: foreach (keys(%f)) {
1844: next if ($_!~/^A(\d+)/);
1845: my $row=$1;
1846: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1847: my ($usy,$ufn)=split(/__&&&\__/,$f{$_});
1848: @assessdata=&exportsheet($sheet->{'uname'},
1849: $sheet->{'udom'},
1850: 'assesscalc',$usy,$ufn);
1851: my $index=0;
1852: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1853: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1854: if ($assessdata[$index]) {
1855: my $col=$_;
1856: if ($assessdata[$index]=~/\D/) {
1857: $c{$col.$row}="'".$assessdata[$index]."'";
1858: } else {
1859: $c{$col.$row}=$assessdata[$index];
1860: }
1861: unless ($col eq 'A') {
1862: $f{$col.$row}='import';
1863: }
1864: }
1865: $index++;
1866: }
1867: }
1868: $cachedassess='';
1869: undef %cachedstores;
1870: $sheet->{'f'} = \%f;
1871: $sheet->{'constants'} = \%c;
1872: &setformulas($sheet);
1873: &setconstants($sheet);
1874: }
1875:
1876: # --------------------------------------------------- Load data for one student
1877: #
1878: sub loadcourse {
1879: my ($sheet,$r)=@_;
1880: my %c=();
1881: my %f=&getformulas($sheet);
1882: my $total=0;
1883: foreach (keys(%f)) {
1884: if ($_=~/^A(\d+)/) {
1885: unless ($f{$_}=~/^[\!\~\-]/) { $total++; }
1886: }
1887: }
1888: my $now=0;
1889: my $since=time;
1890: $r->print(<<ENDPOP);
1891: <script>
1892: popwin=open('','popwin','width=400,height=100');
1893: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
1894: '<h3>Spreadsheet Calculation Progress</h3>'+
1895: '<form name=popremain>'+
1896: '<input type=text size=35 name=remaining value=Starting></form>'+
1897: '</body></html>');
1898: popwin.document.close();
1899: </script>
1900: ENDPOP
1901: $r->rflush();
1902: foreach (keys(%f)) {
1903: next if ($_!~/^A(\d+)/);
1904: my $row=$1;
1905: next if (($f{$_}=~/^[\!\~\-]/) || ($row==0));
1906: my @studentdata=&exportsheet(split(/\:/,$f{$_}),
1907: 'studentcalc');
1908: undef %userrdatas;
1909: $now++;
1910: $r->print('<script>popwin.document.popremain.remaining.value="'.
1911: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
1912: ' secs remaining";</script>');
1913: $r->rflush();
1914: #
1915: my $index=0;
1916: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1917: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1918: if ($studentdata[$index]) {
1919: my $col=$_;
1920: if ($studentdata[$index]=~/\D/) {
1921: $c{$col.$row}="'".$studentdata[$index]."'";
1922: } else {
1923: $c{$col.$row}=$studentdata[$index];
1924: }
1925: unless ($col eq 'A') {
1926: $f{$col.$row}='import';
1927: }
1928: $index++;
1929: }
1930: }
1931: }
1932: $sheet->{'f'}=\%f;
1933: $sheet->{'constants'}=\%c;
1934: &setformulas($sheet);
1935: &setconstants($sheet);
1936: $r->print('<script>popwin.close()</script>');
1937: $r->rflush();
1938: }
1939:
1940: # ------------------------------------------------ Load data for one assessment
1941: #
1942: sub loadassessment {
1943: my ($sheet)=@_;
1944:
1945: my $uhome = $sheet->{'uhome'};
1946: my $uname = $sheet->{'uname'};
1947: my $udom = $sheet->{'udom'};
1948: my $symb = $sheet->{'usymb'};
1949: my $cid = $sheet->{'cid'};
1950: my $cnum = $sheet->{'cnum'};
1951: my $cdom = $sheet->{'cdom'};
1952: my $chome = $sheet->{'chome'};
1953:
1954: my $namespace;
1955: unless ($namespace=$cid) { return ''; }
1956: # Get stored values
1957: my %returnhash=();
1958: if ($cachedassess eq $uname.':'.$udom) {
1959: #
1960: # get data out of the dumped stores
1961: #
1962: my $version=$cachedstores{'version:'.$symb};
1963: my $scope;
1964: for ($scope=1;$scope<=$version;$scope++) {
1965: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
1966: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
1967: }
1968: }
1969: } else {
1970: #
1971: # restore individual
1972: #
1973: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
1974: for (my $version=1;$version<=$returnhash{'version'};$version++) {
1975: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1976: $returnhash{$_}=$returnhash{$version.':'.$_};
1977: }
1978: }
1979: }
1980: #
1981: # returnhash now has all stores for this resource
1982: # convert all "_" to "." to be able to use libraries, multiparts, etc
1983: #
1984: # This is dumb. It is also necessary :(
1985: my @oldkeys=keys %returnhash;
1986: #
1987: foreach my $name (@oldkeys) {
1988: my $value=$returnhash{$name};
1989: delete $returnhash{$name};
1990: $name=~s/\_/\./g;
1991: $returnhash{$name}=$value;
1992: }
1993: # initialize coursedata and userdata for this user
1994: undef %courseopt;
1995: undef %useropt;
1996:
1997: my $userprefix=$uname.'_'.$udom.'_';
1998:
1999: unless ($uhome eq 'no_host') {
2000: # Get coursedata
2001: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
2002: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
2003: $courserdatas{$cid}=\%Tmp;
2004: $courserdatas{$cid.'.last_cache'}=time;
2005: }
2006: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
2007: $courseopt{$userprefix.$name}=$value;
2008: }
2009: # Get userdata (if present)
2010: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
2011: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
2012: $userrdatas{$cid} = \%Tmp;
2013: # Most of the time the user does not have a 'resourcedata.db'
2014: # file. We need to cache that we got nothing instead of bothering
2015: # with requesting it every time.
2016: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
2017: }
2018: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
2019: $useropt{$userprefix.$name}=$value;
2020: }
2021: }
2022: # now courseopt, useropt initialized for this user and course
2023: # (used by parmval)
2024: #
2025: # Load keys for this assessment only
2026: #
2027: my %thisassess=();
2028: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2029: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2030: $thisassess{$_}=1;
2031: }
2032: #
2033: # Load parameters
2034: #
2035: my %c=();
2036: if (tie(%parmhash,'GDBM_File',
2037: $sheet->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
2038: my %f=&getformulas($sheet);
2039: foreach (keys(%f)) {
2040: next if ($_!~/^A/);
2041: next if ($f{$_}=~/^[\!\~\-]/);
2042: if ($f{$_}=~/^parameter/) {
2043: if ($thisassess{$f{$_}}) {
2044: my $val=&parmval($f{$_},$sheet);
2045: $c{$_}=$val;
2046: $c{$f{$_}}=$val;
2047: }
2048: } else {
2049: my $key=$f{$_};
2050: my $ckey=$key;
2051: $key=~s/^stores\_/resource\./;
2052: $key=~s/\_/\./g;
2053: $c{$_}=$returnhash{$key};
2054: $c{$ckey}=$returnhash{$key};
2055: }
2056: }
2057: untie(%parmhash);
2058: }
2059: $sheet->{'constants'}=\%c;
2060: &setconstants($sheet);
2061: }
2062:
2063: # --------------------------------------------------------- Various form fields
2064:
2065: sub textfield {
2066: my ($title,$name,$value)=@_;
2067: return "\n<p><b>$title:</b><br>".
2068: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2069: }
2070:
2071: sub hiddenfield {
2072: my ($name,$value)=@_;
2073: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2074: }
2075:
2076: sub selectbox {
2077: my ($title,$name,$value,%options)=@_;
2078: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2079: foreach (sort keys(%options)) {
2080: $selout.='<option value="'.$_.'"';
2081: if ($_ eq $value) { $selout.=' selected'; }
2082: $selout.='>'.$options{$_}.'</option>';
2083: }
2084: return $selout.'</select>';
2085: }
2086:
2087: # =============================================== Update information in a sheet
2088: #
2089: # Add new users or assessments, etc.
2090: #
2091:
2092: sub updatesheet {
2093: my ($sheet)=@_;
2094: my $stype=$sheet->{'sheettype'};
2095: if ($stype eq 'classcalc') {
2096: return &updateclasssheet($sheet);
2097: } else {
2098: return &updatestudentassesssheet($sheet);
2099: }
2100: }
2101:
2102: # =================================================== Load the rows for a sheet
2103: #
2104: # Import the data for rows
2105: #
2106:
2107: sub loadrows {
2108: my ($sheet,$r)=@_;
2109: my $stype=$sheet->{'sheettype'};
2110: if ($stype eq 'classcalc') {
2111: &loadcourse($sheet,$r);
2112: } elsif ($stype eq 'studentcalc') {
2113: &loadstudent($sheet);
2114: } else {
2115: &loadassessment($sheet);
2116: }
2117: }
2118:
2119: # ======================================================= Forced recalculation?
2120:
2121: sub checkthis {
2122: my ($keyname,$time)=@_;
2123: return ($time<$expiredates{$keyname});
2124: }
2125:
2126: sub forcedrecalc {
2127: my ($uname,$udom,$stype,$usymb)=@_;
2128: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2129: my $time=$oldsheets{$key.'.time'};
2130: if ($ENV{'form.forcerecalc'}) { return 1; }
2131: unless ($time) { return 1; }
2132: if ($stype eq 'assesscalc') {
2133: my $map=(split(/___/,$usymb))[0];
2134: if (&checkthis('::assesscalc:',$time) ||
2135: &checkthis('::assesscalc:'.$map,$time) ||
2136: &checkthis('::assesscalc:'.$usymb,$time) ||
2137: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2138: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2139: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2140: return 1;
2141: }
2142: } else {
2143: if (&checkthis('::studentcalc:',$time) ||
2144: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2145: return 1;
2146: }
2147: }
2148: return 0;
2149: }
2150:
2151: # ============================================================== Export handler
2152: sub exportsheet {
2153: my ($uname,$udom,$stype,$usymb,$fn)=@_;
2154: my @exportarr=();
2155: if (defined($usymb) && ($usymb=~/^\_(\w+)/) && (!$fn)) {
2156: $fn='default_'.$1;
2157: }
2158: #
2159: # Check if cached
2160: #
2161: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2162: my $found='';
2163: if ($oldsheets{$key}) {
2164: foreach (split(/___&\___/,$oldsheets{$key})) {
2165: my ($name,$value)=split(/___=___/,$_);
2166: if ($name eq $fn) {
2167: $found=$value;
2168: }
2169: }
2170: }
2171: unless ($found) {
2172: &cachedssheets($uname,$udom,&Apache::lonnet::homeserver($uname,$udom));
2173: if ($oldsheets{$key}) {
2174: foreach (split(/___&\___/,$oldsheets{$key})) {
2175: my ($name,$value)=split(/___=___/,$_);
2176: if ($name eq $fn) {
2177: $found=$value;
2178: }
2179: }
2180: }
2181: }
2182: #
2183: # Check if still valid
2184: #
2185: if ($found) {
2186: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2187: $found='';
2188: }
2189: }
2190: if ($found) {
2191: #
2192: # Return what was cached
2193: #
2194: @exportarr=split(/___;___/,$found);
2195: return @exportarr;
2196: }
2197: #
2198: # Not cached
2199: #
2200: my ($sheet)=&makenewsheet($uname,$udom,$stype,$usymb);
2201: &readsheet($sheet,$fn);
2202: &updatesheet($sheet);
2203: &loadrows($sheet);
2204: &calcsheet($sheet);
2205: @exportarr=&exportdata($sheet);
2206: #
2207: # Store now
2208: #
2209: my $cid=$ENV{'request.course.id'};
2210: my $current='';
2211: if ($stype eq 'studentcalc') {
2212: $current=&Apache::lonnet::reply('get:'.
2213: $ENV{'course.'.$cid.'.domain'}.':'.
2214: $ENV{'course.'.$cid.'.num'}.
2215: ':nohist_calculatedsheets:'.
2216: &Apache::lonnet::escape($key),
2217: $ENV{'course.'.$cid.'.home'});
2218: } else {
2219: $current=&Apache::lonnet::reply('get:'.$sheet->{'udom'}.':'.
2220: $sheet->{'uname'}.
2221: ':nohist_calculatedsheets_'.
2222: $ENV{'request.course.id'}.':'.
2223: &Apache::lonnet::escape($key),
2224: $sheet->{'uhome'});
2225: }
2226: my %currentlystored=();
2227: unless ($current=~/^error\:/) {
2228: foreach (split(/___&\___/,&Apache::lonnet::unescape($current))) {
2229: my ($name,$value)=split(/___=___/,$_);
2230: $currentlystored{$name}=$value;
2231: }
2232: }
2233: $currentlystored{$fn}=join('___;___',@exportarr);
2234: #
2235: my $newstore='';
2236: foreach (keys(%currentlystored)) {
2237: if ($newstore) { $newstore.='___&___'; }
2238: $newstore.=$_.'___=___'.$currentlystored{$_};
2239: }
2240: my $now=time;
2241: if ($stype eq 'studentcalc') {
2242: &Apache::lonnet::put('nohist_calculatedsheets',
2243: { $key => $newstore,
2244: $key.time => $now },
2245: $ENV{'course.'.$cid.'.domain'},
2246: $ENV{'course.'.$cid.'.num'})
2247: } else {
2248: &Apache::lonnet::put('nohist_calculatedsheets_'.$sheet->{'cid'},
2249: { $key => $newstore,
2250: $key.time => $now },
2251: $sheet->{'udom'},
2252: $sheet->{'uname'})
2253: }
2254: return @exportarr;
2255: }
2256:
2257: # ============================================================ Expiration Dates
2258: #
2259: # Load previously cached student spreadsheets for this course
2260: #
2261: sub expirationdates {
2262: undef %expiredates;
2263: my $cid=$ENV{'request.course.id'};
2264: my $reply=&Apache::lonnet::reply('dump:'.
2265: $ENV{'course.'.$cid.'.domain'}.':'.
2266: $ENV{'course.'.$cid.'.num'}.
2267: ':nohist_expirationdates',
2268: $ENV{'course.'.$cid.'.home'});
2269: unless ($reply=~/^error\:/) {
2270: foreach (split(/\&/,$reply)) {
2271: my ($name,$value)=split(/\=/,$_);
2272: $expiredates{&Apache::lonnet::unescape($name)}
2273: =&Apache::lonnet::unescape($value);
2274: }
2275: }
2276: }
2277:
2278: # ===================================================== Calculated sheets cache
2279: #
2280: # Load previously cached student spreadsheets for this course
2281: #
2282:
2283: sub cachedcsheets {
2284: my $cid=$ENV{'request.course.id'};
2285: my $reply=&Apache::lonnet::reply('dump:'.
2286: $ENV{'course.'.$cid.'.domain'}.':'.
2287: $ENV{'course.'.$cid.'.num'}.
2288: ':nohist_calculatedsheets',
2289: $ENV{'course.'.$cid.'.home'});
2290: unless ($reply=~/^error\:/) {
2291: foreach ( split(/\&/,$reply)) {
2292: my ($name,$value)=split(/\=/,$_);
2293: $oldsheets{&Apache::lonnet::unescape($name)}
2294: =&Apache::lonnet::unescape($value);
2295: }
2296: }
2297: }
2298:
2299: # ===================================================== Calculated sheets cache
2300: #
2301: # Load previously cached assessment spreadsheets for this student
2302: #
2303:
2304: sub cachedssheets {
2305: my ($sname,$sdom,$shome)=@_;
2306: unless (($loadedcaches{$sname.'_'.$sdom}) || ($shome eq 'no_host')) {
2307: my $cid=$ENV{'request.course.id'};
2308: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.
2309: ':nohist_calculatedsheets_'.
2310: $ENV{'request.course.id'},
2311: $shome);
2312: unless ($reply=~/^error\:/) {
2313: foreach ( split(/\&/,$reply)) {
2314: my ($name,$value)=split(/\=/,$_);
2315: $oldsheets{&Apache::lonnet::unescape($name)}
2316: =&Apache::lonnet::unescape($value);
2317: }
2318: }
2319: $loadedcaches{$sname.'_'.$sdom}=1;
2320: }
2321: }
2322:
2323: # ===================================================== Calculated sheets cache
2324: #
2325: # Load previously cached assessment spreadsheets for this student
2326: #
2327:
2328: # ================================================================ Main handler
2329: #
2330: # Interactive call to screen
2331: #
2332: #
2333: sub handler {
2334: my $r=shift;
2335:
2336: if (! exists($ENV{'form.Status'})) {
2337: $ENV{'form.Status'} = 'Active';
2338: }
2339: # Check this server
2340: my $loaderror=&Apache::lonnet::overloaderror($r);
2341: if ($loaderror) { return $loaderror; }
2342: # Check the course homeserver
2343: $loaderror= &Apache::lonnet::overloaderror($r,
2344: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2345: if ($loaderror) { return $loaderror; }
2346:
2347: if ($r->header_only) {
2348: $r->content_type('text/html');
2349: $r->send_http_header;
2350: return OK;
2351: }
2352: # Global directory configs
2353: $includedir = $r->dir_config('lonIncludes');
2354: $tmpdir = $r->dir_config('lonDaemons').'/tmp/';
2355: # Needs to be in a course
2356: if (! $ENV{'request.course.fn'}) {
2357: # Not in a course, or not allowed to modify parms
2358: $ENV{'user.error.msg'}=
2359: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2360: return HTTP_NOT_ACCEPTABLE;
2361: }
2362: # Get query string for limited number of parameters
2363: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
2364: ['uname','udom','usymb','ufn']);
2365: if ($ENV{'request.role'} =~ /^st\./) {
2366: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
2367: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
2368: }
2369: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2370: $ENV{'form.ufn'}='default_'.$1;
2371: }
2372: # Interactive loading of specific sheet?
2373: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2374: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2375: }
2376: #
2377: # Determine the user name and domain for the sheet.
2378: my $aname;
2379: my $adom;
2380: unless ($ENV{'form.uname'}) {
2381: $aname=$ENV{'user.name'};
2382: $adom=$ENV{'user.domain'};
2383: } else {
2384: $aname=$ENV{'form.uname'};
2385: $adom=$ENV{'form.udom'};
2386: }
2387: #
2388: # Open page
2389: $r->content_type('text/html');
2390: $r->header_out('Cache-control','no-cache');
2391: $r->header_out('Pragma','no-cache');
2392: $r->send_http_header;
2393: # Screen output
2394: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2395: if ($ENV{'request.role'} !~ /^st\./) {
2396: $r->print(<<ENDSCRIPT);
2397: <script language="JavaScript">
2398:
2399: function celledit(cn,cf) {
2400: var cnf=prompt(cn,cf);
2401: if (cnf!=null) {
2402: document.sheet.unewfield.value=cn;
2403: document.sheet.unewformula.value=cnf;
2404: document.sheet.submit();
2405: }
2406: }
2407:
2408: function changesheet(cn) {
2409: document.sheet.unewfield.value=cn;
2410: document.sheet.unewformula.value='changesheet';
2411: document.sheet.submit();
2412: }
2413:
2414: function insertrow(cn) {
2415: document.sheet.unewfield.value='insertrow';
2416: document.sheet.unewformula.value=cn;
2417: document.sheet.submit();
2418: }
2419:
2420: </script>
2421: ENDSCRIPT
2422: }
2423: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
2424: '<form action="'.$r->uri.'" name=sheet method=post>');
2425: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
2426: &hiddenfield('udom',$ENV{'form.udom'}).
2427: &hiddenfield('usymb',$ENV{'form.usymb'}).
2428: &hiddenfield('unewfield','').
2429: &hiddenfield('unewformula',''));
2430: $r->rflush();
2431: #
2432: # Full recalc?
2433: if ($ENV{'form.forcerecalc'}) {
2434: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
2435: undef %spreadsheets;
2436: undef %courserdatas;
2437: undef %userrdatas;
2438: undef %defaultsheets;
2439: undef %updatedata;
2440: }
2441: # Read new sheet or modified worksheet
2442: $r->uri=~/\/(\w+)$/;
2443: my ($sheet)=&makenewsheet($aname,$adom,$1,$ENV{'form.usymb'});
2444: #
2445: # If a new formula had been entered, go from work copy
2446: if ($ENV{'form.unewfield'}) {
2447: $r->print('<h2>Modified Workcopy</h2>');
2448: $ENV{'form.unewformula'}=~s/\'/\"/g;
2449: $r->print('<p>New formula: '.$ENV{'form.unewfield'}.'='.
2450: $ENV{'form.unewformula'}.'<p>');
2451: $sheet->{'filename'} = $ENV{'form.ufn'};
2452: &tmpread($sheet,$ENV{'form.unewfield'},$ENV{'form.unewformula'});
2453: } elsif ($ENV{'form.saveas'}) {
2454: $sheet->{'filename'} = $ENV{'form.ufn'};
2455: &tmpread($sheet);
2456: } else {
2457: &readsheet($sheet,$ENV{'form.ufn'});
2458: }
2459: # Print out user information
2460: if ($sheet->{'sheettype'} ne 'classcalc') {
2461: $r->print('<p><b>User:</b> '.$sheet->{'uname'}.
2462: '<br><b>Domain:</b> '.$sheet->{'udom'});
2463: $r->print('<br><b>Section/Group:</b> '.$sheet->{'csec'});
2464: if ($ENV{'form.usymb'}) {
2465: $r->print('<br><b>Assessment:</b> <tt>'.
2466: $ENV{'form.usymb'}.'</tt>');
2467: }
2468: }
2469: #
2470: # Check user permissions
2471: if (($sheet->{'sheettype'} eq 'classcalc' ) ||
2472: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
2473: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
2474: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
2475: $r->print('<h1>Access Permission Denied</h1>'.
2476: '</form></body></html>');
2477: return OK;
2478: }
2479: }
2480: # Additional options
2481: $r->print('<br />'.
2482: '<input type="submit" name="forcerecalc" '.
2483: 'value="Completely Recalculate Sheet"><p>');
2484: if ($sheet->{'sheettype'} eq 'assesscalc') {
2485: $r->print('<p><font size=+2>'.
2486: '<a href="/adm/studentcalc?'.
2487: 'uname='.$sheet->{'uname'}.
2488: '&udom='.$sheet->{'udom'}.'">'.
2489: 'Level up: Student Sheet</a></font><p>');
2490: }
2491: if (($sheet->{'sheettype'} eq 'studentcalc') &&
2492: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
2493: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
2494: 'Level up: Course Sheet</a></font><p>');
2495: }
2496: # Save dialog
2497: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2498: my $fname=$ENV{'form.ufn'};
2499: $fname=~s/\_[^\_]+$//;
2500: if ($fname eq 'default') { $fname='course_default'; }
2501: $r->print('<input type=submit name=saveas value="Save as ...">'.
2502: '<input type=text size=20 name=newfn value="'.$fname.'">'.
2503: 'make default: <input type=checkbox name="makedefufn"><p>');
2504: }
2505: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
2506: # Load dialog
2507: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2508: $r->print('<p><input type=submit name=load value="Load ...">'.
2509: '<select name="loadthissheet">'.
2510: '<option name="default">Default</option>');
2511: foreach (&othersheets($sheet)) {
2512: $r->print('<option name="'.$_.'"');
2513: if ($ENV{'form.ufn'} eq $_) {
2514: $r->print(' selected');
2515: }
2516: $r->print('>'.$_.'</option>');
2517: }
2518: $r->print('</select><p>');
2519: if ($sheet->{'sheettype'} eq 'studentcalc') {
2520: &setothersheets($sheet,
2521: &othersheets($sheet,'assesscalc'));
2522: }
2523: }
2524: # Cached sheets
2525: &expirationdates();
2526: undef %oldsheets;
2527: undef %loadedcaches;
2528: if ($sheet->{'sheettype'} eq 'classcalc') {
2529: $r->print("Loading previously calculated student sheets ...\n");
2530: $r->rflush();
2531: &cachedcsheets();
2532: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
2533: $r->print("Loading previously calculated assessment sheets ...\n");
2534: $r->rflush();
2535: &cachedssheets($sheet->{'uname'},$sheet->{'udom'},$sheet->{'uhome'});
2536: }
2537: # Update sheet, load rows
2538: $r->print("Loaded sheet(s), updating rows ...<br>\n");
2539: $r->rflush();
2540: #
2541: &updatesheet($sheet);
2542: $r->print("Updated rows, loading row data ...\n");
2543: $r->rflush();
2544: #
2545: &loadrows($sheet,$r);
2546: $r->print("Loaded row data, calculating sheet ...<br>\n");
2547: $r->rflush();
2548: #
2549: my $calcoutput=&calcsheet($sheet);
2550: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
2551: # See if something to save
2552: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
2553: my $fname='';
2554: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
2555: $fname=~s/\W/\_/g;
2556: if ($fname eq 'default') { $fname='course_default'; }
2557: $fname.='_'.$sheet->{'sheettype'};
2558: $sheet->{'filename'} = $fname;
2559: $ENV{'form.ufn'}=$fname;
2560: $r->print('<p>Saving spreadsheet: '.
2561: &writesheet($sheet,$ENV{'form.makedefufn'}).
2562: '<p>');
2563: }
2564: }
2565: #
2566: # Write the modified worksheet
2567: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'<p>');
2568: &tmpwrite($sheet);
2569: if ($sheet->{'sheettype'} eq 'studentcalc') {
2570: $r->print('<br>Show rows with empty A column: ');
2571: } else {
2572: $r->print('<br>Show empty rows: ');
2573: }
2574: #
2575: $r->print(&hiddenfield('userselhidden','true').
2576: '<input type="checkbox" name="showall" onClick="submit()"');
2577: #
2578: if ($ENV{'form.showall'}) {
2579: $r->print(' checked');
2580: } else {
2581: unless ($ENV{'form.userselhidden'}) {
2582: unless
2583: ($ENV{'course.'.$ENV{'request.course.id'}.'.hideemptyrows'} eq 'yes') {
2584: $r->print(' checked');
2585: $ENV{'form.showall'}=1;
2586: }
2587: }
2588: }
2589: $r->print('>');
2590: #
2591: # CSV format checkbox (classcalc sheets only)
2592: $r->print(' Output CSV format: <input type="checkbox" '.
2593: 'name="showcsv" onClick="submit()"');
2594: $r->print(' checked') if ($ENV{'form.showcsv'});
2595: $r->print('>');
2596: if ($sheet->{'sheettype'} eq 'classcalc') {
2597: $r->print(' Student Status: '.
2598: &Apache::lonhtmlcommon::StatusOptions
2599: ($ENV{'form.Status'},'sheet'));
2600: }
2601: #
2602: # Buttons to insert rows
2603: $r->print(<<ENDINSERTBUTTONS);
2604: <br>
2605: <input type='button' onClick='insertrow("top");'
2606: value='Insert Row Top'>
2607: <input type='button' onClick='insertrow("bottom");'
2608: value='Insert Row Bottom'><br>
2609: ENDINSERTBUTTONS
2610: # Print out sheet
2611: &outsheet($r,$sheet);
2612: $r->print('</form></body></html>');
2613: # Done
2614: return OK;
2615: }
2616:
2617: 1;
2618: __END__
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