1: #
2: # $Id: lonspreadsheet.pm,v 1.153 2002/12/03 10:04:21 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 Apache::Constants qw(:common :http);
57: use Apache::lonnet;
58: use Apache::lonhtmlcommon;
59: use Apache::loncoursedata;
60: use Apache::File();
61: use Safe;
62: use Safe::Hole;
63: use Opcode;
64: use GDBM_File;
65: use HTML::Entities();
66: use HTML::TokeParser;
67: use Spreadsheet::WriteExcel;
68:
69: #
70: # Caches for coursewide information
71: #
72: my %Section;
73:
74: #
75: # Caches for previously calculated spreadsheets
76: #
77:
78: my %oldsheets;
79: my %loadedcaches;
80: my %expiredates;
81:
82: #
83: # Cache for stores of an individual user
84: #
85:
86: my $cachedassess;
87: my %cachedstores;
88:
89: #
90: # These cache hashes need to be independent of user, resource and course
91: # (user and course can/should be in the keys)
92: #
93:
94: my %spreadsheets;
95: my %courserdatas;
96: my %userrdatas;
97: my %defaultsheets;
98: my %rowlabel_cache;
99:
100: #
101: # These global hashes are dependent on user, course and resource,
102: # and need to be initialized every time when a sheet is calculated
103: #
104: my %courseopt;
105: my %useropt;
106: my %parmhash;
107:
108: #
109: # Some hashes for stats on timing and performance
110: #
111:
112: my %starttimes;
113: my %usedtimes;
114: my %numbertimes;
115:
116: # Stuff that only the screen handler can know
117:
118: my $includedir;
119: my $tmpdir;
120:
121: # =============================================================================
122: # ===================================== Implements an instance of a spreadsheet
123:
124: ##
125: ## mask - used to reside in the safe space.
126: ##
127: sub mask {
128: my ($lower,$upper)=@_;
129: $upper = $lower if (! defined($upper));
130: #
131: my ($la,$ld) = ($lower=~/([A-Za-z]|\*)(\d+|\*)/);
132: my ($ua,$ud) = ($upper=~/([A-Za-z]|\*)(\d+|\*)/);
133: #
134: my $alpha='';
135: my $num='';
136: #
137: if (($la eq '*') || ($ua eq '*')) {
138: $alpha='[A-Za-z]';
139: } else {
140: if (($la=~/[A-Z]/) && ($ua=~/[A-Z]/) ||
141: ($la=~/[a-z]/) && ($ua=~/[a-z]/)) {
142: $alpha='['.$la.'-'.$ua.']';
143: } else {
144: $alpha='['.$la.'-Za-'.$ua.']';
145: }
146: }
147: if (($ld eq '*') || ($ud eq '*')) {
148: $num='\d+';
149: } else {
150: if (length($ld)!=length($ud)) {
151: $num.='(';
152: foreach ($ld=~m/\d/g) {
153: $num.='['.$_.'-9]';
154: }
155: if (length($ud)-length($ld)>1) {
156: $num.='|\d{'.(length($ld)+1).','.(length($ud)-1).'}';
157: }
158: $num.='|';
159: foreach ($ud=~m/\d/g) {
160: $num.='[0-'.$_.']';
161: }
162: $num.=')';
163: } else {
164: my @lda=($ld=~m/\d/g);
165: my @uda=($ud=~m/\d/g);
166: my $i;
167: my $j=0;
168: my $notdone=1;
169: for ($i=0;($i<=$#lda)&&($notdone);$i++) {
170: if ($lda[$i]==$uda[$i]) {
171: $num.=$lda[$i];
172: $j=$i;
173: } else {
174: $notdone=0;
175: }
176: }
177: if ($j<$#lda-1) {
178: $num.='('.$lda[$j+1];
179: for ($i=$j+2;$i<=$#lda;$i++) {
180: $num.='['.$lda[$i].'-9]';
181: }
182: if ($uda[$j+1]-$lda[$j+1]>1) {
183: $num.='|['.($lda[$j+1]+1).'-'.($uda[$j+1]-1).']\d{'.
184: ($#lda-$j-1).'}';
185: }
186: $num.='|'.$uda[$j+1];
187: for ($i=$j+2;$i<=$#uda;$i++) {
188: $num.='[0-'.$uda[$i].']';
189: }
190: $num.=')';
191: } else {
192: if ($lda[-1]!=$uda[-1]) {
193: $num.='['.$lda[-1].'-'.$uda[-1].']';
194: }
195: }
196: }
197: }
198: return '^'.$alpha.$num."\$";
199: }
200:
201: sub initsheet {
202: my $safeeval = new Safe(shift);
203: my $safehole = new Safe::Hole;
204: $safeeval->permit("entereval");
205: $safeeval->permit(":base_math");
206: $safeeval->permit("sort");
207: $safeeval->deny(":base_io");
208: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
209: $safehole->wrap(\&Apache::lonspreadsheet::mask,$safeeval,'&mask');
210: $safeeval->share('$@');
211: my $code=<<'ENDDEFS';
212: # ---------------------------------------------------- Inside of the safe space
213:
214: #
215: # f: formulas
216: # t: intermediate format (variable references expanded)
217: # v: output values
218: # c: preloaded constants (A-column)
219: # rl: row label
220: # os: other spreadsheets (for student spreadsheet only)
221:
222: undef %sheet_values; # Holds the (computed, final) values for the sheet
223: # This is only written to by &calc, the spreadsheet computation routine.
224: # It is read by many functions
225: undef %t; # Holds the values of the spreadsheet temporarily. Set in &sett,
226: # which does the translation of strings like C5 into the value in C5.
227: # Used in &calc - %t holds the values that are actually eval'd.
228: undef %f; # Holds the formulas for each cell. This is the users
229: # (spreadsheet authors) data for each cell.
230: # set by &setformulas and returned by &getformulas
231: # &setformulas is called by &readsheet, &tmpread, &updateclasssheet,
232: # &updatestudentassesssheet, &loadstudent, &loadcourse
233: # &getformulas is called by &writesheet, &tmpwrite, &updateclasssheet,
234: # &updatestudentassesssheet, &loadstudent, &loadcourse, &loadassessment,
235: undef %c; # Holds the constants for a sheet. In the assessment
236: # sheets, this is the A column. Used in &MINPARM, &MAXPARM, &expandnamed,
237: # &sett, and &setconstants. There is no &getconstants.
238: # &setconstants is called by &loadstudent, &loadcourse, &load assessment,
239: undef @os; # Holds the names of other spreadsheets - this is used to specify
240: # the spreadsheets that are available for the assessment sheet.
241: # Set by &setothersheets. &setothersheets is called by &handler. A
242: # related subroutine is &othersheets.
243: #$errorlog = '';
244:
245: $maxrow = 0;
246: $sheettype = '';
247:
248: # filename/reference of the sheet
249: $filename = '';
250:
251: # user data
252: $uname = '';
253: $uhome = '';
254: $udom = '';
255:
256: # course data
257:
258: $csec = '';
259: $chome= '';
260: $cnum = '';
261: $cdom = '';
262: $cid = '';
263: $coursefilename = '';
264:
265: # symb
266:
267: $usymb = '';
268:
269: # error messages
270: $errormsg = '';
271:
272:
273: #-------------------------------------------------------
274:
275: =item UWCALC(hashname,modules,units,date)
276:
277: returns the proportion of the module
278: weights not previously completed by the student.
279:
280: =over 4
281:
282: =item hashname
283:
284: name of the hash the module dates have been inserted into
285:
286: =item modules
287:
288: reference to a cell which contains a comma deliminated list of modules
289: covered by the assignment.
290:
291: =item units
292:
293: reference to a cell which contains a comma deliminated list of module
294: weights with respect to the assignment
295:
296: =item date
297:
298: reference to a cell which contains the date the assignment was completed.
299:
300: =back
301:
302: =cut
303:
304: #-------------------------------------------------------
305: sub UWCALC {
306: my ($hashname,$modules,$units,$date) = @_;
307: my @Modules = split(/,/,$modules);
308: my @Units = split(/,/,$units);
309: my $total_weight;
310: foreach (@Units) {
311: $total_weight += $_;
312: }
313: my $usum=0;
314: for (my $i=0; $i<=$#Modules; $i++) {
315: if (&HASH($hashname,$Modules[$i]) eq $date) {
316: $usum += $Units[$i];
317: }
318: }
319: return $usum/$total_weight;
320: }
321:
322: #-------------------------------------------------------
323:
324: =item CDLSUM(list)
325:
326: returns the sum of the elements in a cell which contains
327: a Comma Deliminate List of numerical values.
328: 'list' is a reference to a cell which contains a comma deliminated list.
329:
330: =cut
331:
332: #-------------------------------------------------------
333: sub CDLSUM {
334: my ($list)=@_;
335: my $sum;
336: foreach (split/,/,$list) {
337: $sum += $_;
338: }
339: return $sum;
340: }
341:
342: #-------------------------------------------------------
343:
344: =item CDLITEM(list,index)
345:
346: returns the item at 'index' in a Comma Deliminated List.
347:
348: =over 4
349:
350: =item list
351:
352: reference to a cell which contains a comma deliminated list.
353:
354: =item index
355:
356: the Perl index of the item requested (first element in list has
357: an index of 0)
358:
359: =back
360:
361: =cut
362:
363: #-------------------------------------------------------
364: sub CDLITEM {
365: my ($list,$index)=@_;
366: my @Temp = split/,/,$list;
367: return $Temp[$index];
368: }
369:
370: #-------------------------------------------------------
371:
372: =item CDLHASH(name,key,value)
373:
374: loads a comma deliminated list of keys into
375: the hash 'name', all with a value of 'value'.
376:
377: =over 4
378:
379: =item name
380:
381: name of the hash.
382:
383: =item key
384:
385: (a pointer to) a comma deliminated list of keys.
386:
387: =item value
388:
389: a single value to be entered for each key.
390:
391: =back
392:
393: =cut
394:
395: #-------------------------------------------------------
396: sub CDLHASH {
397: my ($name,$key,$value)=@_;
398: my @Keys;
399: my @Values;
400: # Check to see if we have multiple $key values
401: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
402: my $keymask = &mask($key);
403: # Assume the keys are addresses
404: my @Temp = grep /$keymask/,keys(%sheet_values);
405: @Keys = $sheet_values{@Temp};
406: } else {
407: $Keys[0]= $key;
408: }
409: my @Temp;
410: foreach $key (@Keys) {
411: @Temp = (@Temp, split/,/,$key);
412: }
413: @Keys = @Temp;
414: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
415: my $valmask = &mask($value);
416: my @Temp = grep /$valmask/,keys(%sheet_values);
417: @Values =$sheet_values{@Temp};
418: } else {
419: $Values[0]= $value;
420: }
421: $value = $Values[0];
422: # Add values to hash
423: for (my $i = 0; $i<=$#Keys; $i++) {
424: my $key = $Keys[$i];
425: if (! exists ($hashes{$name}->{$key})) {
426: $hashes{$name}->{$key}->[0]=$value;
427: } else {
428: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
429: $hashes{$name}->{$key} = \@Temp;
430: }
431: }
432: return "hash '$name' updated";
433: }
434:
435: #-------------------------------------------------------
436:
437: =item GETHASH(name,key,index)
438:
439: returns the element in hash 'name'
440: reference by the key 'key', at index 'index' in the values list.
441:
442: =cut
443:
444: #-------------------------------------------------------
445: sub GETHASH {
446: my ($name,$key,$index)=@_;
447: if (! defined($index)) {
448: $index = 0;
449: }
450: if ($key =~ /^[A-z]\d+$/) {
451: $key = $sheet_values{$key};
452: }
453: return $hashes{$name}->{$key}->[$index];
454: }
455:
456: #-------------------------------------------------------
457:
458: =item CLEARHASH(name)
459:
460: clears all the values from the hash 'name'
461:
462: =item CLEARHASH(name,key)
463:
464: clears all the values from the hash 'name' associated with the given key.
465:
466: =cut
467:
468: #-------------------------------------------------------
469: sub CLEARHASH {
470: my ($name,$key)=@_;
471: if (defined($key)) {
472: if (exists($hashes{$name}->{$key})) {
473: $hashes{$name}->{$key}=undef;
474: return "hash '$name' key '$key' cleared";
475: }
476: } else {
477: if (exists($hashes{$name})) {
478: $hashes{$name}=undef;
479: return "hash '$name' cleared";
480: }
481: }
482: return "Error in clearing hash";
483: }
484:
485: #-------------------------------------------------------
486:
487: =item HASH(name,key,value)
488:
489: loads values into an internal hash. If a key
490: already has a value associated with it, the values are sorted numerically.
491:
492: =item HASH(name,key)
493:
494: returns the 0th value in the hash 'name' associated with 'key'.
495:
496: =cut
497:
498: #-------------------------------------------------------
499: sub HASH {
500: my ($name,$key,$value)=@_;
501: my @Keys;
502: undef @Keys;
503: my @Values;
504: # Check to see if we have multiple $key values
505: if ($key =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
506: my $keymask = &mask($key);
507: # Assume the keys are addresses
508: my @Temp = grep /$keymask/,keys(%sheet_values);
509: @Keys = $sheet_values{@Temp};
510: } else {
511: $Keys[0]= $key;
512: }
513: # If $value is empty, return the first value associated
514: # with the first key.
515: if (! $value) {
516: return $hashes{$name}->{$Keys[0]}->[0];
517: }
518: # Check to see if we have multiple $value(s)
519: if ($value =~ /[A-z](\-[A-z])?\d+(\-\d+)?/) {
520: my $valmask = &mask($value);
521: my @Temp = grep /$valmask/,keys(%sheet_values);
522: @Values =$sheet_values{@Temp};
523: } else {
524: $Values[0]= $value;
525: }
526: # Add values to hash
527: for (my $i = 0; $i<=$#Keys; $i++) {
528: my $key = $Keys[$i];
529: my $value = ($i<=$#Values ? $Values[$i] : $Values[0]);
530: if (! exists ($hashes{$name}->{$key})) {
531: $hashes{$name}->{$key}->[0]=$value;
532: } else {
533: my @Temp = sort(@{$hashes{$name}->{$key}},$value);
534: $hashes{$name}->{$key} = \@Temp;
535: }
536: }
537: return $Values[-1];
538: }
539:
540: #-------------------------------------------------------
541:
542: =item NUM(range)
543:
544: returns the number of items in the range.
545:
546: =cut
547:
548: #-------------------------------------------------------
549: sub NUM {
550: my $mask=mask(@_);
551: my $num= $#{@{grep(/$mask/,keys(%sheet_values))}}+1;
552: return $num;
553: }
554:
555: sub BIN {
556: my ($low,$high,$lower,$upper)=@_;
557: my $mask=mask($lower,$upper);
558: my $num=0;
559: foreach (grep /$mask/,keys(%sheet_values)) {
560: if (($sheet_values{$_}>=$low) && ($sheet_values{$_}<=$high)) {
561: $num++;
562: }
563: }
564: return $num;
565: }
566:
567:
568: #-------------------------------------------------------
569:
570: =item SUM(range)
571:
572: returns the sum of items in the range.
573:
574: =cut
575:
576: #-------------------------------------------------------
577: sub SUM {
578: my $mask=mask(@_);
579: my $sum=0;
580: foreach (grep /$mask/,keys(%sheet_values)) {
581: $sum+=$sheet_values{$_};
582: }
583: return $sum;
584: }
585:
586: #-------------------------------------------------------
587:
588: =item MEAN(range)
589:
590: compute the average of the items in the range.
591:
592: =cut
593:
594: #-------------------------------------------------------
595: sub MEAN {
596: my $mask=mask(@_);
597: my $sum=0;
598: my $num=0;
599: foreach (grep /$mask/,keys(%sheet_values)) {
600: $sum+=$sheet_values{$_};
601: $num++;
602: }
603: if ($num) {
604: return $sum/$num;
605: } else {
606: return undef;
607: }
608: }
609:
610: #-------------------------------------------------------
611:
612: =item STDDEV(range)
613:
614: compute the standard deviation of the items in the range.
615:
616: =cut
617:
618: #-------------------------------------------------------
619: sub STDDEV {
620: my $mask=mask(@_);
621: my $sum=0; my $num=0;
622: foreach (grep /$mask/,keys(%sheet_values)) {
623: $sum+=$sheet_values{$_};
624: $num++;
625: }
626: unless ($num>1) { return undef; }
627: my $mean=$sum/$num;
628: $sum=0;
629: foreach (grep /$mask/,keys(%sheet_values)) {
630: $sum+=($sheet_values{$_}-$mean)**2;
631: }
632: return sqrt($sum/($num-1));
633: }
634:
635: #-------------------------------------------------------
636:
637: =item PROD(range)
638:
639: compute the product of the items in the range.
640:
641: =cut
642:
643: #-------------------------------------------------------
644: sub PROD {
645: my $mask=mask(@_);
646: my $prod=1;
647: foreach (grep /$mask/,keys(%sheet_values)) {
648: $prod*=$sheet_values{$_};
649: }
650: return $prod;
651: }
652:
653: #-------------------------------------------------------
654:
655: =item MAX(range)
656:
657: compute the maximum of the items in the range.
658:
659: =cut
660:
661: #-------------------------------------------------------
662: sub MAX {
663: my $mask=mask(@_);
664: my $max='-';
665: foreach (grep /$mask/,keys(%sheet_values)) {
666: unless ($max) { $max=$sheet_values{$_}; }
667: if (($sheet_values{$_}>$max) || ($max eq '-')) { $max=$sheet_values{$_}; }
668: }
669: return $max;
670: }
671:
672: #-------------------------------------------------------
673:
674: =item MIN(range)
675:
676: compute the minimum of the items in the range.
677:
678: =cut
679:
680: #-------------------------------------------------------
681: sub MIN {
682: my $mask=mask(@_);
683: my $min='-';
684: foreach (grep /$mask/,keys(%sheet_values)) {
685: unless ($max) { $max=$sheet_values{$_}; }
686: if (($sheet_values{$_}<$min) || ($min eq '-')) {
687: $min=$sheet_values{$_};
688: }
689: }
690: return $min;
691: }
692:
693: #-------------------------------------------------------
694:
695: =item SUMMAX(num,lower,upper)
696:
697: compute the sum of the largest 'num' items in the range from
698: 'lower' to 'upper'
699:
700: =cut
701:
702: #-------------------------------------------------------
703: sub SUMMAX {
704: my ($num,$lower,$upper)=@_;
705: my $mask=mask($lower,$upper);
706: my @inside=();
707: foreach (grep /$mask/,keys(%sheet_values)) {
708: push (@inside,$sheet_values{$_});
709: }
710: @inside=sort(@inside);
711: my $sum=0; my $i;
712: for ($i=$#inside;(($i>$#inside-$num) && ($i>=0));$i--) {
713: $sum+=$inside[$i];
714: }
715: return $sum;
716: }
717:
718: #-------------------------------------------------------
719:
720: =item SUMMIN(num,lower,upper)
721:
722: compute the sum of the smallest 'num' items in the range from
723: 'lower' to 'upper'
724:
725: =cut
726:
727: #-------------------------------------------------------
728: sub SUMMIN {
729: my ($num,$lower,$upper)=@_;
730: my $mask=mask($lower,$upper);
731: my @inside=();
732: foreach (grep /$mask/,keys(%sheet_values)) {
733: $inside[$#inside+1]=$sheet_values{$_};
734: }
735: @inside=sort(@inside);
736: my $sum=0; my $i;
737: for ($i=0;(($i<$num) && ($i<=$#inside));$i++) {
738: $sum+=$inside[$i];
739: }
740: return $sum;
741: }
742:
743: #-------------------------------------------------------
744:
745: =item MINPARM(parametername)
746:
747: Returns the minimum value of the parameters matching the parametername.
748: parametername should be a string such as 'duedate'.
749:
750: =cut
751:
752: #-------------------------------------------------------
753: sub MINPARM {
754: my ($expression) = @_;
755: my $min = undef;
756: study($expression);
757: foreach $parameter (keys(%c)) {
758: next if ($parameter !~ /$expression/);
759: if ((! defined($min)) || ($min > $c{$parameter})) {
760: $min = $c{$parameter}
761: }
762: }
763: return $min;
764: }
765:
766: #-------------------------------------------------------
767:
768: =item MAXPARM(parametername)
769:
770: Returns the maximum value of the parameters matching the input parameter name.
771: parametername should be a string such as 'duedate'.
772:
773: =cut
774:
775: #-------------------------------------------------------
776: sub MAXPARM {
777: my ($expression) = @_;
778: my $max = undef;
779: study($expression);
780: foreach $parameter (keys(%c)) {
781: next if ($parameter !~ /$expression/);
782: if ((! defined($min)) || ($max < $c{$parameter})) {
783: $max = $c{$parameter}
784: }
785: }
786: return $max;
787: }
788:
789: #--------------------------------------------------------
790: sub expandnamed {
791: my $expression=shift;
792: if ($expression=~/^\&/) {
793: my ($func,$var,$formula)=($expression=~/^\&(\w+)\(([^\;]+)\;(.*)\)/);
794: my @vars=split(/\W+/,$formula);
795: my %values=();
796: undef %values;
797: foreach ( @vars ) {
798: my $varname=$_;
799: if ($varname=~/\D/) {
800: $formula=~s/$varname/'$c{\''.$varname.'\'}'/ge;
801: $varname=~s/$var/\(\\w\+\)/g;
802: foreach (keys(%c)) {
803: if ($_=~/$varname/) {
804: $values{$1}=1;
805: }
806: }
807: }
808: }
809: if ($func eq 'EXPANDSUM') {
810: my $result='';
811: foreach (keys(%values)) {
812: my $thissum=$formula;
813: $thissum=~s/$var/$_/g;
814: $result.=$thissum.'+';
815: }
816: $result=~s/\+$//;
817: return $result;
818: } else {
819: return 0;
820: }
821: } else {
822: # it is not a function, so it is a parameter name
823: # We should do the following:
824: # 1. Take the list of parameter names
825: # 2. look through the list for ones that match the parameter we want
826: # 3. If there are no collisions, return the one that matches
827: # 4. If there is a collision, return 'bad parameter name error'
828: my $returnvalue = '';
829: my @matches = ();
830: $#matches = -1;
831: study $expression;
832: foreach $parameter (keys(%c)) {
833: push @matches,$parameter if ($parameter =~ /$expression/);
834: }
835: if (scalar(@matches) == 0) {
836: $returnvalue = 'unmatched parameter: '.$parameter;
837: } elsif (scalar(@matches) == 1) {
838: $returnvalue = '$c{\''.$matches[0].'\'}';
839: } elsif (scalar(@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: # There was a negative number of matches, which indicates
849: # something is wrong with reality. Better warn the user.
850: $returnvalue = 'bizzare parameter: '.$parameter;
851: }
852: return $returnvalue;
853: }
854: }
855:
856: sub sett {
857: %t=();
858: my $pattern='';
859: if ($sheettype eq 'assesscalc') {
860: $pattern='A';
861: } else {
862: $pattern='[A-Z]';
863: }
864: # Deal with the template row
865: foreach (keys(%f)) {
866: next if ($_!~/template\_(\w)/);
867: my $col=$1;
868: next if ($col=~/^$pattern/);
869: foreach (keys(%f)) {
870: next if ($_!~/A(\d+)/);
871: my $trow=$1;
872: next if (! $trow);
873: # Get the name of this cell
874: my $lb=$col.$trow;
875: # Grab the template declaration
876: $t{$lb}=$f{'template_'.$col};
877: # Replace '#' with the row number
878: $t{$lb}=~s/\#/$trow/g;
879: # Replace '....' with ','
880: $t{$lb}=~s/\.\.+/\,/g;
881: # Replace 'A0' with the value from 'A0'
882: $t{$lb}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
883: # Replace parameters
884: $t{$lb}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
885: }
886: }
887: # Deal with the normal cells
888: foreach (keys(%f)) {
889: if (exists($f{$_}) && ($_!~/template\_/)) {
890: my $matches=($_=~/^$pattern(\d+)/);
891: if (($matches) && ($1)) {
892: unless ($f{$_}=~/^\!/) {
893: $t{$_}=$c{$_};
894: }
895: } else {
896: $t{$_}=$f{$_};
897: $t{$_}=~s/\.\.+/\,/g;
898: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
899: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
900: }
901: }
902: }
903: # For inserted lines, [B-Z] is also valid
904: unless ($sheettype eq 'assesscalc') {
905: foreach (keys(%f)) {
906: if ($_=~/[B-Z](\d+)/) {
907: if ($f{'A'.$1}=~/^[\~\-]/) {
908: $t{$_}=$f{$_};
909: $t{$_}=~s/\.\.+/\,/g;
910: $t{$_}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
911: $t{$_}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
912: }
913: }
914: }
915: }
916: # For some reason 'A0' gets special treatment... This seems superfluous
917: # but I imagine it is here for a reason.
918: $t{'A0'}=$f{'A0'};
919: $t{'A0'}=~s/\.\.+/\,/g;
920: $t{'A0'}=~s/(^|[^\"\'])([A-Za-z]\d+)/$1\$sheet_values\{\'$2\'\}/g;
921: $t{'A0'}=~s/(^|[^\"\'])\[([^\]]+)\]/$1.&expandnamed($2)/ge;
922: }
923:
924: sub calc {
925: undef %sheet_values;
926: &sett();
927: my $notfinished=1;
928: my $lastcalc='';
929: my $depth=0;
930: while ($notfinished) {
931: $notfinished=0;
932: foreach (keys(%t)) {
933: #$errorlog .= "$_:".$t{$_};
934: my $old=$sheet_values{$_};
935: $sheet_values{$_}=eval $t{$_};
936: if ($@) {
937: undef %sheet_values;
938: return $_.': '.$@;
939: }
940: if ($sheet_values{$_} ne $old) { $notfinished=1; $lastcalc=$_; }
941: #$errorlog .= ":".$sheet_values{$_}."\n";
942: }
943: $depth++;
944: if ($depth>100) {
945: undef %sheet_values;
946: return $lastcalc.': Maximum calculation depth exceeded';
947: }
948: }
949: return '';
950: }
951:
952: # ------------------------------------------- End of "Inside of the safe space"
953: ENDDEFS
954: $safeeval->reval($code);
955: return $safeeval;
956: }
957:
958: #
959: #
960: #
961: sub templaterow {
962: my $sheet = shift;
963: my @cols=();
964: my $rowlabel = 'Template';
965: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
966: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
967: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
968: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
969: push(@cols,{ name => 'template_'.$_,
970: formula => $sheet->{'f'}->{'template_'.$_},
971: value => $sheet->{'f'}->{'template_'.$_} });
972: }
973: return ($rowlabel,@cols);
974: }
975:
976: sub outrowassess {
977: # $n is the current row number
978: my ($sheet,$n) = @_;
979: my @cols=();
980: my $rowlabel='';
981: if ($n) {
982: my ($usy,$ufn)=split(/__&&&\__/,$sheet->{'f'}->{'A'.$n});
983: if (exists($sheet->{'rowlabel'}->{$usy})) {
984: $rowlabel = $sheet->{'rowlabel'}->{$usy};
985: } else {
986: $rowlabel = '';
987: }
988: } else {
989: $rowlabel = 'Export';
990: }
991: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
992: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
993: 'a','b','c','d','e','f','g','h','i','j','k','l','m',
994: 'n','o','p','q','r','s','t','u','v','w','x','y','z') {
995: push(@cols,{ name => $_.$n,
996: formula => $sheet->{'f'}->{$_.$n},
997: value => $sheet->{'values'}->{$_.$n}});
998: }
999: return ($rowlabel,@cols);
1000: }
1001:
1002: sub outrow {
1003: my ($sheet,$n)=@_;
1004: my @cols=();
1005: my $rowlabel;
1006: if ($n) {
1007: $rowlabel = $sheet->{'rowlabel'}->{$sheet->{'f'}->{'A'.$n}};
1008: } else {
1009: if ($sheet->{'sheettype'} eq 'classcalc') {
1010: $rowlabel = 'Summary';
1011: } else {
1012: $rowlabel = 'Export';
1013: }
1014: }
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: push(@cols,{ name => $_.$n,
1020: formula => $sheet->{'f'}->{$_.$n},
1021: value => $sheet->{'values'}->{$_.$n}});
1022: }
1023: return ($rowlabel,@cols);
1024: }
1025:
1026: # ------------------------------------------------ Add or change formula values
1027: sub setformulas {
1028: my ($sheet)=shift;
1029: %{$sheet->{'safe'}->varglob('f')}=%{$sheet->{'f'}};
1030: }
1031:
1032: # ------------------------------------------------ Add or change formula values
1033: sub setconstants {
1034: my ($sheet)=shift;
1035: my ($constants) = @_;
1036: if (! ref($constants)) {
1037: my %tmp = @_;
1038: $constants = \%tmp;
1039: }
1040: $sheet->{'constants'} = $constants;
1041: return %{$sheet->{'safe'}->varglob('c')}=%{$sheet->{'constants'}};
1042: }
1043:
1044: # --------------------------------------------- Set names of other spreadsheets
1045: sub setothersheets {
1046: my $sheet = shift;
1047: my @othersheets = @_;
1048: $sheet->{'othersheets'} = \@othersheets;
1049: @{$sheet->{'safe'}->varglob('os')}=@othersheets;
1050: return;
1051: }
1052:
1053: # ------------------------------------------------ Add or change formula values
1054: sub setrowlabels {
1055: my $sheet=shift;
1056: my ($rowlabel) = @_;
1057: if (! ref($rowlabel)) {
1058: my %tmp = @_;
1059: $rowlabel = \%tmp;
1060: }
1061: $sheet->{'rowlabel'}=$rowlabel;
1062: }
1063:
1064: # ------------------------------------------------------- Calculate spreadsheet
1065: sub calcsheet {
1066: my $sheet=shift;
1067: my $result = $sheet->{'safe'}->reval('&calc();');
1068: %{$sheet->{'values'}} = %{$sheet->{'safe'}->varglob('sheet_values')};
1069: return $result;
1070: }
1071:
1072: # ---------------------------------------------------------------- Get formulas
1073: # Return a copy of the formulas
1074: sub getformulas {
1075: my $sheet = shift;
1076: return %{$sheet->{'safe'}->varglob('f')};
1077: }
1078:
1079: sub geterrorlog {
1080: my $sheet = shift;
1081: return ${$sheet->{'safe'}->varglob('errorlog')};
1082: }
1083:
1084: sub gettitle {
1085: my $sheet = shift;
1086: if ($sheet->{'sheettype'} eq 'classcalc') {
1087: return $sheet->{'coursedesc'};
1088: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1089: return 'Grades for '.$sheet->{'uname'}.'@'.$sheet->{'udom'};
1090: } elsif ($sheet->{'sheettype'} eq 'assesscalc') {
1091: if (($sheet->{'usymb'} eq '_feedback') ||
1092: ($sheet->{'usymb'} eq '_evaluation') ||
1093: ($sheet->{'usymb'} eq '_discussion') ||
1094: ($sheet->{'usymb'} eq '_tutoring')) {
1095: my $title = $sheet->{'usymb'};
1096: $title =~ s/^_//;
1097: $title = ucfirst($title);
1098: return $title;
1099: }
1100: return if (! defined($sheet->{'mapid'}) ||
1101: $sheet->{'mapid'} !~ /^\d+$/);
1102: my $mapid = $sheet->{'mapid'};
1103: return if (! defined($sheet->{'resid'}) ||
1104: $sheet->{'resid'} !~ /^\d+$/);
1105: my $resid = $sheet->{'resid'};
1106: my %course_db;
1107: tie(%course_db,'GDBM_File',$sheet->{'coursefilename'}.'.db',
1108: &GDBM_READER(),0640);
1109: return if (! tied(%course_db));
1110: my $key = 'title_'.$mapid.'.'.$resid;
1111: my $title = '';
1112: if (exists($course_db{$key})) {
1113: $title = $course_db{$key};
1114: } else {
1115: $title = $sheet->{'usymb'};
1116: }
1117: untie (%course_db);
1118: return $title;
1119: }
1120: }
1121:
1122: # ----------------------------------------------------- Get value of $f{'A'.$n}
1123: sub getfa {
1124: my $sheet = shift;
1125: my ($n)=@_;
1126: return $sheet->{'safe'}->reval('$f{"A'.$n.'"}');
1127: }
1128:
1129: # ------------------------------------------------------------- Export of A-row
1130: sub exportdata {
1131: my $sheet=shift;
1132: my @exportarray=();
1133: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
1134: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
1135: if (exists($sheet->{'values'}->{$_.'0'})) {
1136: push(@exportarray,$sheet->{'values'}->{$_.'0'});
1137: } else {
1138: push(@exportarray,'');
1139: }
1140: }
1141: return @exportarray;
1142: }
1143:
1144:
1145:
1146: sub update_student_sheet{
1147: my ($sheet,$r,$c) = @_;
1148: # Load in the studentcalc sheet
1149: &readsheet($sheet,'default_studentcalc');
1150: # Determine the structure (contained assessments, etc) of the sheet
1151: &updatesheet($sheet);
1152: # Load in the cached sheets for this student
1153: &cachedssheets($sheet);
1154: # Load in the (possibly cached) data from the assessment sheets
1155: &loadstudent($sheet,$r,$c);
1156: # Compute the sheet
1157: &calcsheet($sheet);
1158: }
1159:
1160: # ========================================================== End of Spreadsheet
1161: # =============================================================================
1162: #
1163: # Procedures for spreadsheet output
1164: #
1165: # --------------------------------------------- Produce output row n from sheet
1166:
1167: sub get_row {
1168: my ($sheet,$n) = @_;
1169: my ($rowlabel,@rowdata);
1170: if ($n eq '-') {
1171: ($rowlabel,@rowdata) = &templaterow($sheet);
1172: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1173: ($rowlabel,@rowdata) = &outrowassess($sheet,$n);
1174: } else {
1175: ($rowlabel,@rowdata) = &outrow($sheet,$n);
1176: }
1177: return ($rowlabel,@rowdata);
1178: }
1179:
1180: ########################################################################
1181: ########################################################################
1182: sub sort_indicies {
1183: my $sheet = shift;
1184: my @sortidx=();
1185: #
1186: if ($sheet->{'sheettype'} eq 'classcalc') {
1187: my @sortby=(undef);
1188: # Skip row 0
1189: for (my $row=1;$row<=$sheet->{'maxrow'};$row++) {
1190: my (undef,$sname,$sdom,$fullname,$section,$id) =
1191: split(':',$sheet->{'rowlabel'}->{$sheet->{'f'}->{'A'.$row}});
1192: push (@sortby, lc($fullname));
1193: push (@sortidx, $row);
1194: }
1195: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
1196: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1197: my @sortby1=(undef);
1198: my @sortby2=(undef);
1199: # Skip row 0
1200: for (my $row=1;$row<=$sheet->{'maxrow'};$row++) {
1201: my (undef,$symb,$uname,$udom,$mapid,$resid,$title) =
1202: split(':',$sheet->{'rowlabel'}->{$sheet->{'f'}->{'A'.$row}});
1203: $symb = &Apache::lonnet::unescape($symb);
1204: my ($sequence) = ($symb =~ /\/([^\/]*\.sequence)/);
1205: if ($sequence eq '') {
1206: $sequence = $symb;
1207: }
1208: push (@sortby1, $sequence);
1209: push (@sortby2, $title);
1210: push (@sortidx, $row);
1211: }
1212: @sortidx = sort { $sortby1[$a] cmp $sortby1[$b] ||
1213: $sortby2[$a] cmp $sortby2[$b] } @sortidx;
1214: } else {
1215: my @sortby=(undef);
1216: # Skip row 0
1217: for (my $row=1;$row<=$sheet->{'maxrow'};$row++) {
1218: push (@sortby, $sheet->{'safe'}->reval('$f{"A'.$row.'"}'));
1219: push (@sortidx, $row);
1220: }
1221: @sortidx = sort { $sortby[$a] cmp $sortby[$b]; } @sortidx;
1222: }
1223: return @sortidx;
1224: }
1225:
1226: #############################################################
1227: ### ###
1228: ### Spreadsheet Output Routines ###
1229: ### ###
1230: #############################################################
1231:
1232: ############################################
1233: ## HTML output routines ##
1234: ############################################
1235: sub html_editable_cell {
1236: my ($cell,$bgcolor) = @_;
1237: my $result;
1238: my ($name,$formula,$value);
1239: if (defined($cell)) {
1240: $name = $cell->{'name'};
1241: $formula = $cell->{'formula'};
1242: $value = $cell->{'value'};
1243: }
1244: $name = '' if (! defined($name));
1245: $formula = '' if (! defined($formula));
1246: if (! defined($value)) {
1247: $value = '<font color="'.$bgcolor.'">#</font>';
1248: if ($formula ne '') {
1249: $value = '<i>undefined value</i>';
1250: }
1251: } elsif ($value =~ /^\s*$/ ) {
1252: $value = '<font color="'.$bgcolor.'">#</font>';
1253: } else {
1254: $value = &HTML::Entities::encode($value);
1255: }
1256: # Make the formula safe for outputting
1257: $formula =~ s/\'/\"/g;
1258: # The formula will be parsed by the browser *twice* before being
1259: # displayed to the user for editing.
1260: $formula = &HTML::Entities::encode(&HTML::Entities::encode($formula));
1261: # Escape newlines so they make it into the edit window
1262: $formula =~ s/\n/\\n/gs;
1263: # Glue everything together
1264: $result .= "<a href=\"javascript:celledit(\'".
1265: $name."','".$formula."');\">".$value."</a>";
1266: return $result;
1267: }
1268:
1269: sub html_uneditable_cell {
1270: my ($cell,$bgcolor) = @_;
1271: my $value = (defined($cell) ? $cell->{'value'} : '');
1272: $value = &HTML::Entities::encode($value);
1273: return ' '.$value.' ';
1274: }
1275:
1276: sub outsheet_html {
1277: my ($sheet,$r) = @_;
1278: my ($num_uneditable,$realm,$row_type);
1279: if ($sheet->{'sheettype'} eq 'assesscalc') {
1280: $num_uneditable = 1;
1281: $realm = 'Assessment';
1282: $row_type = 'Item';
1283: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1284: $num_uneditable = 26;
1285: $realm = 'User';
1286: $row_type = 'Assessment';
1287: } elsif ($sheet->{'sheettype'} eq 'classcalc') {
1288: $num_uneditable = 26;
1289: $realm = 'Course';
1290: $row_type = 'Student';
1291: } else {
1292: return; # error
1293: }
1294: ####################################
1295: # Print out header table
1296: ####################################
1297: my $num_left = 52-$num_uneditable;
1298: my $tabledata =<<"END";
1299: <table border="2">
1300: <tr>
1301: <th colspan="1" rowspan="2"><font size="+2">$realm</font></th>
1302: <td bgcolor="#FFDDDD" colspan="$num_uneditable">
1303: <b><font size="+1">Import</font></b></td>
1304: <td colspan="$num_left">
1305: <b><font size="+1">Calculations</font></b></td>
1306: </tr><tr>
1307: END
1308: my $label_num = 0;
1309: foreach (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')){
1310: if ($label_num<$num_uneditable) {
1311: $tabledata.='<td bgcolor="#FFDDDD">';
1312: } else {
1313: $tabledata.='<td>';
1314: }
1315: $tabledata.="<b><font size=+1>$_</font></b></td>";
1316: $label_num++;
1317: }
1318: $tabledata.="</tr>\n";
1319: $r->print($tabledata);
1320: ####################################
1321: # Print out template row
1322: ####################################
1323: my ($rowlabel,@rowdata) = &get_row($sheet,'-');
1324: my $row_html = '<tr><td>'.&format_html_rowlabel($sheet,$rowlabel).'</td>';
1325: my $num_cols_output = 0;
1326: foreach my $cell (@rowdata) {
1327: if ($num_cols_output++ < $num_uneditable) {
1328: $row_html .= '<td bgcolor="#FFDDDD">';
1329: $row_html .= &html_uneditable_cell($cell,'#FFDDDD');
1330: } else {
1331: $row_html .= '<td bgcolor="#EOFFDD">';
1332: $row_html .= &html_editable_cell($cell,'#E0FFDD');
1333: }
1334: $row_html .= '</td>';
1335: }
1336: $row_html.= "</tr>\n";
1337: $r->print($row_html);
1338: ####################################
1339: # Print out summary/export row
1340: ####################################
1341: ($rowlabel,@rowdata) = &get_row($sheet,'0');
1342: $row_html = '<tr><td>'.&format_html_rowlabel($sheet,$rowlabel).'</td>';
1343: $num_cols_output = 0;
1344: foreach my $cell (@rowdata) {
1345: if ($num_cols_output++ < 26) {
1346: $row_html .= '<td bgcolor="#CCCCFF">';
1347: $row_html .= &html_editable_cell($cell,'#CCCCFF');
1348: } else {
1349: $row_html .= '<td bgcolor="#DDCCFF">';
1350: $row_html .= &html_uneditable_cell(undef,'#CCCCFF');
1351: }
1352: $row_html .= '</td>';
1353: }
1354: $row_html.= "</tr>\n";
1355: $r->print($row_html);
1356: $r->print('</table>');
1357: ####################################
1358: # Prepare to output rows
1359: ####################################
1360: my @Rows = &sort_indicies($sheet);
1361: #
1362: # Loop through the rows and output them one at a time
1363: my $rows_output=0;
1364: foreach my $rownum (@Rows) {
1365: my ($rowlabel,@rowdata) = &get_row($sheet,$rownum);
1366: next if ($rowlabel =~ /^\s*$/);
1367: next if (($sheet->{'sheettype'} eq 'assesscalc') &&
1368: (! $ENV{'form.showall'}) &&
1369: ($rowdata[0]->{'value'} =~ /^\s*$/));
1370: if (! $ENV{'form.showall'} &&
1371: $sheet->{'sheettype'} =~ /^(studentcalc|classcalc)$/) {
1372: my $row_is_empty = 1;
1373: foreach my $cell (@rowdata) {
1374: if ($cell->{'value'} !~ /^\s*$/) {
1375: $row_is_empty = 0;
1376: last;
1377: }
1378: }
1379: next if ($row_is_empty);
1380: }
1381: #
1382: my $defaultbg='#E0FF';
1383: #
1384: my $row_html ="\n".'<tr><td><b><font size=+1>'.$rownum.
1385: '</font></b></td>';
1386: #
1387: if ($sheet->{'sheettype'} eq 'classcalc') {
1388: $row_html.='<td>'.&format_html_rowlabel($sheet,$rowlabel).'</td>';
1389: # Output links for each student?
1390: # Nope, that is already done for us in format_html_rowlabel (for now)
1391: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1392: $row_html.='<td>'.&format_html_rowlabel($sheet,$rowlabel);
1393: $row_html.= '<br>'.
1394: '<select name="sel_'.$rownum.'" '.
1395: 'onChange="changesheet('.$rownum.')">'.
1396: '<option name="default">Default</option>';
1397: foreach (@{$sheet->{'othersheets'}}) {
1398: $row_html.='<option name="'.$_.'"';
1399: #if ($ufn eq $_) {
1400: # $row_html.=' selected';
1401: #}
1402: $row_html.='>'.$_.'</option>';
1403: }
1404: $row_html.='</select></td>';
1405: } elsif ($sheet->{'sheettype'} eq 'assesscalc') {
1406: $row_html.='<td>'.&format_html_rowlabel($sheet,$rowlabel).'</td>';
1407: }
1408: #
1409: my $shown_cells = 0;
1410: foreach my $cell (@rowdata) {
1411: my $value = $cell->{'value'};
1412: my $formula = $cell->{'formula'};
1413: my $cellname = $cell->{'name'};
1414: #
1415: my $bgcolor;
1416: if ($shown_cells && ($shown_cells/5 == int($shown_cells/5))) {
1417: $bgcolor = $defaultbg.'99';
1418: } else {
1419: $bgcolor = $defaultbg.'DD';
1420: }
1421: $bgcolor='#FFDDDD' if ($shown_cells < $num_uneditable);
1422: #
1423: $row_html.='<td bgcolor='.$bgcolor.'>';
1424: if ($shown_cells < $num_uneditable) {
1425: $row_html .= &html_uneditable_cell($cell,$bgcolor);
1426: } else {
1427: $row_html .= &html_editable_cell($cell,$bgcolor);
1428: }
1429: $row_html.='</td>';
1430: $shown_cells++;
1431: }
1432: if ($row_html) {
1433: if ($rows_output % 25 == 0) {
1434: $r->print("</table>\n<br>\n");
1435: $r->rflush();
1436: $r->print('<table border=2>'.
1437: '<tr><td> <td>'.$row_type.'</td>'.
1438: '<td>'.
1439: join('</td><td>',
1440: (split(//,'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
1441: 'abcdefghijklmnopqrstuvwxyz'))).
1442: "</td></tr>\n");
1443: }
1444: $rows_output++;
1445: $r->print($row_html);
1446: }
1447: }
1448: #
1449: $r->print('</table>');
1450: #
1451: # Debugging code (be sure to uncomment errorlog code in safe space):
1452: #
1453: # $r->print("\n<pre>");
1454: # $r->print(&geterrorlog($sheet));
1455: # $r->print("\n</pre>");
1456: return 1;
1457: }
1458:
1459: ############################################
1460: ## csv output routines ##
1461: ############################################
1462: sub outsheet_csv {
1463: my ($sheet,$r) = @_;
1464: my $csvdata = '';
1465: my @Values;
1466: ####################################
1467: # Prepare to output rows
1468: ####################################
1469: my @Rows = &sort_indicies($sheet);
1470: #
1471: # Loop through the rows and output them one at a time
1472: my $rows_output=0;
1473: foreach my $rownum (@Rows) {
1474: my ($rowlabel,@rowdata) = &get_row($sheet,$rownum);
1475: next if ($rowlabel =~ /^\s*$/);
1476: push (@Values,&format_csv_rowlabel($sheet,$rowlabel));
1477: foreach my $cell (@rowdata) {
1478: push (@Values,'"'.$cell->{'value'}.'"');
1479: }
1480: $csvdata.= join(',',@Values)."\n";
1481: @Values = ();
1482: }
1483: #
1484: # Write the CSV data to a file and serve up a link
1485: #
1486: my $filename = '/prtspool/'.
1487: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1488: time.'_'.rand(1000000000).'.csv';
1489: my $file;
1490: unless ($file = Apache::File->new('>'.'/home/httpd'.$filename)) {
1491: $r->log_error("Couldn't open $filename for output $!");
1492: $r->print("Problems occured in writing the csv file. ".
1493: "This error has been logged. ".
1494: "Please alert your LON-CAPA administrator.");
1495: $r->print("<pre>\n".$csvdata."</pre>\n");
1496: return 0;
1497: }
1498: print $file $csvdata;
1499: close($file);
1500: $r->print('<br /><br />'.
1501: '<a href="'.$filename.'">Your CSV spreadsheet.</a>'."\n");
1502: #
1503: return 1;
1504: }
1505:
1506: ############################################
1507: ## Excel output routines ##
1508: ############################################
1509: sub outsheet_recursive_excel {
1510: my ($sheet,$r) = @_;
1511: my $c = $r->connection;
1512: return undef if ($sheet->{'sheettype'} ne 'classcalc');
1513: my ($workbook,$filename) = &create_excel_spreadsheet($sheet,$r);
1514: return undef if (! defined($workbook));
1515: #
1516: # Create main worksheet
1517: my $main_worksheet = $workbook->addworksheet('main');
1518: #
1519: # Figure out who the students are
1520: my %f=&getformulas($sheet);
1521: my $count = 0;
1522: $r->print(<<END);
1523: <p>
1524: Compiling Excel Workbook with a worksheet for each student.
1525: </p><p>
1526: This operation may take longer than a complete recalculation of the
1527: spreadsheet.
1528: </p><p>
1529: To abort this operation, hit the stop button on your browser.
1530: </p><p>
1531: A link to the spreadsheet will be available at the end of this process.
1532: </p>
1533: <p>
1534: END
1535: $r->rflush();
1536: my $starttime = time;
1537: foreach my $rownum (&sort_indicies($sheet)) {
1538: $count++;
1539: my ($sname,$sdom) = split(':',$f{'A'.$rownum});
1540: my $student_excel_worksheet=$workbook->addworksheet($sname.'@'.$sdom);
1541: # Create a new spreadsheet
1542: my $studentsheet = &makenewsheet($sname,$sdom,'studentcalc',undef);
1543: # Read in the spreadsheet definition
1544: &update_student_sheet($studentsheet,$r,$c);
1545: # Stuff the sheet into excel
1546: &export_sheet_as_excel($studentsheet,$student_excel_worksheet);
1547: my $totaltime = int((time - $starttime) / $count * $sheet->{'maxrow'});
1548: my $timeleft = int((time - $starttime) / $count * ($sheet->{'maxrow'} - $count));
1549: if ($count % 5 == 0) {
1550: $r->print($count.' students completed.'.
1551: ' Time remaining: '.$timeleft.' sec. '.
1552: ' Estimated total time: '.$totaltime." sec <br />\n");
1553: $r->rflush();
1554: }
1555: if(defined($c) && ($c->aborted())) {
1556: last;
1557: }
1558: }
1559: #
1560: if(! $c->aborted() ) {
1561: $r->print('All students spreadsheets completed!<br />');
1562: $r->rflush();
1563: #
1564: # &export_sheet_as_excel fills $worksheet with the data from $sheet
1565: &export_sheet_as_excel($sheet,$main_worksheet);
1566: #
1567: $workbook->close();
1568: # Okay, the spreadsheet is taken care of, so give the user a link.
1569: $r->print('<br /><br />'.
1570: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1571: } else {
1572: $workbook->close(); # Not sure how necessary this is.
1573: #unlink('/home/httpd'.$filename); # No need to keep this around?
1574: }
1575: return 1;
1576: }
1577:
1578: sub outsheet_excel {
1579: my ($sheet,$r) = @_;
1580: my ($workbook,$filename) = &create_excel_spreadsheet($sheet,$r);
1581: return undef if (! defined($workbook));
1582: my $sheetname;
1583: if ($sheet->{'sheettype'} eq 'classcalc') {
1584: $sheetname = 'Main';
1585: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
1586: $sheetname = $sheet->{'uname'}.'@'.$sheet->{'udom'};
1587: } elsif ($sheet->{'sheettype'} eq 'assesscalc') {
1588: $sheetname = $sheet->{'uname'}.'@'.$sheet->{'udom'}.' assessment';
1589: }
1590: my $worksheet = $workbook->addworksheet($sheetname);
1591: #
1592: # &export_sheet_as_excel fills $worksheet with the data from $sheet
1593: &export_sheet_as_excel($sheet,$worksheet);
1594: #
1595: $workbook->close();
1596: # Okay, the spreadsheet is taken care of, so give the user a link.
1597: $r->print('<br /><br />'.
1598: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1599: return 1;
1600: }
1601:
1602: sub create_excel_spreadsheet {
1603: my ($sheet,$r) = @_;
1604: my $filename = '/prtspool/'.
1605: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1606: time.'_'.rand(1000000000).'.xls';
1607: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1608: if (! defined($workbook)) {
1609: $r->log_error("Error creating excel spreadsheet $filename: $!");
1610: $r->print("Problems creating new Excel file. ".
1611: "This error has been logged. ".
1612: "Please alert your LON-CAPA administrator");
1613: return undef;
1614: }
1615: #
1616: # The spreadsheet stores temporary data in files, then put them
1617: # together. If needed we should be able to disable this (memory only).
1618: # The temporary directory must be specified before calling 'addworksheet'.
1619: # File::Temp is used to determine the temporary directory.
1620: $workbook->set_tempdir('/home/httpd/perl/tmp');
1621: #
1622: # Determine the name to give the worksheet
1623: return ($workbook,$filename);
1624: }
1625:
1626: sub export_sheet_as_excel {
1627: my $sheet = shift;
1628: my $worksheet = shift;
1629: #
1630: my $rows_output = 0;
1631: my $cols_output = 0;
1632: ####################################
1633: # Write an identifying row #
1634: ####################################
1635: my @Headerinfo = ($sheet->{'coursedesc'});
1636: my $title = &gettitle($sheet);
1637: $cols_output = 0;
1638: if (defined($title)) {
1639: $worksheet->write($rows_output++,$cols_output++,$title);
1640: }
1641: ####################################
1642: # Write the summary/export row #
1643: ####################################
1644: my ($rowlabel,@rowdata) = &get_row($sheet,'0');
1645: my $label = &format_excel_rowlabel($sheet,$rowlabel);
1646: $cols_output = 0;
1647: $worksheet->write($rows_output,$cols_output++,$label);
1648: foreach my $cell (@rowdata) {
1649: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
1650: }
1651: $rows_output+= 2; # Skip a row, just for fun
1652: ####################################
1653: # Prepare to output rows
1654: ####################################
1655: my @Rows = &sort_indicies($sheet);
1656: #
1657: # Loop through the rows and output them one at a time
1658: foreach my $rownum (@Rows) {
1659: my ($rowlabel,@rowdata) = &get_row($sheet,$rownum);
1660: next if ($rowlabel =~ /^[\s]*$/);
1661: $cols_output = 0;
1662: my $label = &format_excel_rowlabel($sheet,$rowlabel);
1663: if ( ! $ENV{'form.showall'} &&
1664: $sheet->{'sheettype'} =~ /^(studentcalc|classcalc)$/) {
1665: my $row_is_empty = 1;
1666: foreach my $cell (@rowdata) {
1667: if ($cell->{'value'} !~ /^\s*$/) {
1668: $row_is_empty = 0;
1669: last;
1670: }
1671: }
1672: next if ($row_is_empty);
1673: }
1674: $worksheet->write($rows_output,$cols_output++,$label);
1675: if (ref($label)) {
1676: $cols_output = (scalar(@$label));
1677: }
1678: foreach my $cell (@rowdata) {
1679: $worksheet->write($rows_output,$cols_output++,$cell->{'value'});
1680: }
1681: $rows_output++;
1682: }
1683: return;
1684: }
1685:
1686: ############################################
1687: ## XML output routines ##
1688: ############################################
1689: sub outsheet_xml {
1690: my ($sheet,$r) = @_;
1691: ## Someday XML
1692: ## Will be rendered for the user
1693: ## But not on this day
1694: }
1695:
1696: ##
1697: ## Outsheet - calls other outsheet_* functions
1698: ##
1699: sub outsheet {
1700: my ($sheet,$r)=@_;
1701: if (! exists($ENV{'form.output'})) {
1702: $ENV{'form.output'} = 'HTML';
1703: }
1704: if (lc($ENV{'form.output'}) eq 'csv') {
1705: &outsheet_csv($sheet,$r);
1706: } elsif (lc($ENV{'form.output'}) eq 'excel') {
1707: &outsheet_excel($sheet,$r);
1708: } elsif (lc($ENV{'form.output'}) eq 'recursive excel') {
1709: &outsheet_recursive_excel($sheet,$r);
1710: # } elsif (lc($ENV{'form.output'}) eq 'xml' ) {
1711: # &outsheet_xml($sheet,$r);
1712: } else {
1713: &outsheet_html($sheet,$r);
1714: }
1715: }
1716:
1717: ########################################################################
1718: ########################################################################
1719: sub othersheets {
1720: my ($sheet,$stype)=@_;
1721: $stype = $sheet->{'sheettype'} if (! defined($stype));
1722: #
1723: my $cnum = $sheet->{'cnum'};
1724: my $cdom = $sheet->{'cdom'};
1725: my $chome = $sheet->{'chome'};
1726: #
1727: my @alternatives=();
1728: my %results=&Apache::lonnet::dump($stype.'_spreadsheets',$cdom,$cnum);
1729: my ($tmp) = keys(%results);
1730: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1731: @alternatives = sort (keys(%results));
1732: }
1733: return @alternatives;
1734: }
1735:
1736: #
1737: # -------------------------------------- Parse a spreadsheet
1738: #
1739: sub parse_sheet {
1740: # $sheetxml is a scalar reference or a scalar
1741: my ($sheetxml) = @_;
1742: if (! ref($sheetxml)) {
1743: my $tmp = $sheetxml;
1744: $sheetxml = \$tmp;
1745: }
1746: my %f;
1747: my $parser=HTML::TokeParser->new($sheetxml);
1748: my $token;
1749: while ($token=$parser->get_token) {
1750: if ($token->[0] eq 'S') {
1751: if ($token->[1] eq 'field') {
1752: $f{$token->[2]->{'col'}.$token->[2]->{'row'}}=
1753: $parser->get_text('/field');
1754: }
1755: if ($token->[1] eq 'template') {
1756: $f{'template_'.$token->[2]->{'col'}}=
1757: $parser->get_text('/template');
1758: }
1759: }
1760: }
1761: return \%f;
1762: }
1763:
1764: #
1765: # -------------------------------------- Read spreadsheet formulas for a course
1766: #
1767: sub readsheet {
1768: my ($sheet,$fn)=@_;
1769: #
1770: my $stype = $sheet->{'sheettype'};
1771: my $cnum = $sheet->{'cnum'};
1772: my $cdom = $sheet->{'cdom'};
1773: my $chome = $sheet->{'chome'};
1774: #
1775: if (! defined($fn)) {
1776: # There is no filename. Look for defaults in course and global, cache
1777: unless ($fn=$defaultsheets{$cnum.'_'.$cdom.'_'.$stype}) {
1778: my %tmphash = &Apache::lonnet::get('environment',
1779: ['spreadsheet_default_'.$stype],
1780: $cdom,$cnum);
1781: my ($tmp) = keys(%tmphash);
1782: if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1783: $fn = 'default_'.$stype;
1784: } else {
1785: $fn = $tmphash{'spreadsheet_default_'.$stype};
1786: }
1787: unless (($fn) && ($fn!~/^error\:/)) {
1788: $fn='default_'.$stype;
1789: }
1790: $defaultsheets{$cnum.'_'.$cdom.'_'.$stype}=$fn;
1791: }
1792: }
1793: # $fn now has a value
1794: $sheet->{'filename'} = $fn;
1795: # see if sheet is cached
1796: my $fstring='';
1797: if ($fstring=$spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}) {
1798: my %tmp = split(/___;___/,$fstring);
1799: $sheet->{'f'} = \%tmp;
1800: &setformulas($sheet);
1801: } else {
1802: # Not cached, need to read
1803: my %f=();
1804: if ($fn=~/^default\_/) {
1805: my $sheetxml='';
1806: my $fh;
1807: my $dfn=$fn;
1808: $dfn=~s/\_/\./g;
1809: if ($fh=Apache::File->new($includedir.'/'.$dfn)) {
1810: $sheetxml=join('',<$fh>);
1811: } else {
1812: # $sheetxml='<field row="0" col="A">"Error"</field>';
1813: $sheetxml='<field row="0" col="A"></field>';
1814: }
1815: %f=%{&parse_sheet(\$sheetxml)};
1816: } elsif($fn=~/\/*\.spreadsheet$/) {
1817: my $sheetxml=&Apache::lonnet::getfile
1818: (&Apache::lonnet::filelocation('',$fn));
1819: if ($sheetxml == -1) {
1820: $sheetxml='<field row="0" col="A">"Error loading spreadsheet '
1821: .$fn.'"</field>';
1822: }
1823: %f=%{&parse_sheet(\$sheetxml)};
1824: } else {
1825: my $sheet='';
1826: my %tmphash = &Apache::lonnet::dump($fn,$cdom,$cnum);
1827: my ($tmp) = keys(%tmphash);
1828: unless ($tmp =~ /^(con_lost|error|no_such_host)/i) {
1829: foreach (keys(%tmphash)) {
1830: $f{$_}=$tmphash{$_};
1831: }
1832: }
1833: }
1834: # Cache and set
1835: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1836: $sheet->{'f'}=\%f;
1837: &setformulas($sheet);
1838: }
1839: }
1840:
1841: # -------------------------------------------------------- Make new spreadsheet
1842: sub makenewsheet {
1843: my ($uname,$udom,$stype,$usymb)=@_;
1844: my $sheet={};
1845: $sheet->{'uname'} = $uname;
1846: $sheet->{'udom'} = $udom;
1847: $sheet->{'sheettype'} = $stype;
1848: $sheet->{'usymb'} = $usymb;
1849: $sheet->{'mapid'} = $ENV{'form.mapid'};
1850: $sheet->{'resid'} = $ENV{'form.resid'};
1851: $sheet->{'cid'} = $ENV{'request.course.id'};
1852: $sheet->{'csec'} = $Section{$uname.':'.$udom};
1853: $sheet->{'coursefilename'} = $ENV{'request.course.fn'};
1854: $sheet->{'cnum'} = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
1855: $sheet->{'cdom'} = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
1856: $sheet->{'chome'} = $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1857: $sheet->{'coursedesc'} = $ENV{'course.'.$ENV{'request.course.id'}.
1858: '.description'};
1859: $sheet->{'uhome'} = &Apache::lonnet::homeserver($uname,$udom);
1860: #
1861: #
1862: $sheet->{'f'} = {};
1863: $sheet->{'constants'} = {};
1864: $sheet->{'othersheets'} = [];
1865: $sheet->{'rowlabel'} = {};
1866: #
1867: #
1868: $sheet->{'safe'}=&initsheet($sheet->{'sheettype'});
1869: #
1870: # Place all the %$sheet items into the safe space except the safe space
1871: # itself
1872: my $initstring = '';
1873: foreach (qw/uname udom sheettype usymb cid csec coursefilename
1874: cnum cdom chome uhome/) {
1875: $initstring.= qq{\$$_="$sheet->{$_}";};
1876: }
1877: $sheet->{'safe'}->reval($initstring);
1878: return $sheet;
1879: }
1880:
1881: # ------------------------------------------------------------ Save spreadsheet
1882: sub writesheet {
1883: my ($sheet,$makedef)=@_;
1884: my $cid=$sheet->{'cid'};
1885: if (&Apache::lonnet::allowed('opa',$cid)) {
1886: my %f=&getformulas($sheet);
1887: my $stype= $sheet->{'sheettype'};
1888: my $cnum = $sheet->{'cnum'};
1889: my $cdom = $sheet->{'cdom'};
1890: my $chome= $sheet->{'chome'};
1891: my $fn = $sheet->{'filename'};
1892: # Cache new sheet
1893: $spreadsheets{$cnum.'_'.$cdom.'_'.$stype.'_'.$fn}=join('___;___',%f);
1894: # Write sheet
1895: foreach (keys(%f)) {
1896: delete($f{$_}) if ($f{$_} eq 'import');
1897: }
1898: my $reply = &Apache::lonnet::put($fn,\%f,$cdom,$cnum);
1899: if ($reply eq 'ok') {
1900: $reply = &Apache::lonnet::put($stype.'_spreadsheets',
1901: {$fn => $ENV{'user.name'}.'@'.$ENV{'user.domain'}},
1902: $cdom,$cnum);
1903: if ($reply eq 'ok') {
1904: if ($makedef) {
1905: return &Apache::lonnet::put('environment',
1906: {'spreadsheet_default_'.$stype => $fn },
1907: $cdom,$cnum);
1908: }
1909: return $reply;
1910: }
1911: return $reply;
1912: }
1913: return $reply;
1914: }
1915: return 'unauthorized';
1916: }
1917:
1918: # ----------------------------------------------- Make a temp copy of the sheet
1919: # "Modified workcopy" - interactive only
1920: #
1921: sub tmpwrite {
1922: my ($sheet) = @_;
1923: my $fn=$ENV{'user.name'}.'_'.
1924: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1925: $sheet->{'filename'};
1926: $fn=~s/\W/\_/g;
1927: $fn=$tmpdir.$fn.'.tmp';
1928: my $fh;
1929: if ($fh=Apache::File->new('>'.$fn)) {
1930: my %f = &getformulas($sheet);
1931: while( my ($cell,$formula) = each(%f)) {
1932: print $fh &Apache::lonnet::escape($cell)."=".&Apache::lonnet::escape($formula)."\n";
1933: }
1934: }
1935: }
1936:
1937: # ---------------------------------------------------------- Read the temp copy
1938: sub tmpread {
1939: my ($sheet,$nfield,$nform)=@_;
1940: my $fn=$ENV{'user.name'}.'_'.
1941: $ENV{'user.domain'}.'_spreadsheet_'.$sheet->{'usymb'}.'_'.
1942: $sheet->{'filename'};
1943: $fn=~s/\W/\_/g;
1944: $fn=$tmpdir.$fn.'.tmp';
1945: my $fh;
1946: my %fo=();
1947: my $countrows=0;
1948: if ($fh=Apache::File->new($fn)) {
1949: while (<$fh>) {
1950: chomp;
1951: my ($cell,$formula) = split(/=/);
1952: $cell = &Apache::lonnet::unescape($cell);
1953: $formula = &Apache::lonnet::unescape($formula);
1954: $fo{$cell} = $formula;
1955: }
1956: }
1957: # chomp($value);
1958: # $fo{$name}=$value;
1959: # if ($name=~/^A(\d+)$/) {
1960: # if ($1>$countrows) {
1961: # $countrows=$1;
1962: # }
1963: # }
1964: # }
1965: # }
1966: if ($nform eq 'changesheet') {
1967: $fo{'A'.$nfield}=(split(/__&&&\__/,$fo{'A'.$nfield}))[0];
1968: unless ($ENV{'form.sel_'.$nfield} eq 'Default') {
1969: $fo{'A'.$nfield}.='__&&&__'.$ENV{'form.sel_'.$nfield};
1970: }
1971: # } elsif ($nfield eq 'insertrow') {
1972: # $countrows++;
1973: # my $newrow=substr('000000'.$countrows,-7);
1974: # if ($nform eq 'top') {
1975: # $fo{'A'.$countrows}='--- '.$newrow;
1976: # } else {
1977: # $fo{'A'.$countrows}='~~~ '.$newrow;
1978: # }
1979: } else {
1980: if ($nfield) { $fo{$nfield}=$nform; }
1981: }
1982: $sheet->{'f'}=\%fo;
1983: &setformulas($sheet);
1984: }
1985:
1986: ##################################################
1987: ##################################################
1988:
1989: =pod
1990:
1991: =item &parmval()
1992:
1993: Determine the value of a parameter.
1994:
1995: Inputs: $what, the parameter needed, $sheet, the safe space
1996:
1997: Returns: The value of a parameter, or '' if none.
1998:
1999: This function cascades through the possible levels searching for a value for
2000: a parameter. The levels are checked in the following order:
2001: user, course (at section level and course level), map, and lonnet::metadata.
2002: This function uses %parmhash, which must be tied prior to calling it.
2003: This function also requires %courseopt and %useropt to be initialized for
2004: this user and course.
2005:
2006: =cut
2007:
2008: ##################################################
2009: ##################################################
2010: sub parmval {
2011: my ($what,$sheet)=@_;
2012: my $symb = $sheet->{'usymb'};
2013: unless ($symb) { return ''; }
2014: #
2015: my $cid = $sheet->{'cid'};
2016: my $csec = $sheet->{'csec'};
2017: my $uname = $sheet->{'uname'};
2018: my $udom = $sheet->{'udom'};
2019: my $result='';
2020: #
2021: my ($mapname,$id,$fn)=split(/\_\_\_/,$symb);
2022: # Cascading lookup scheme
2023: my $rwhat=$what;
2024: $what =~ s/^parameter\_//;
2025: $what =~ s/\_([^\_]+)$/\.$1/;
2026: #
2027: my $symbparm = $symb.'.'.$what;
2028: my $mapparm = $mapname.'___(all).'.$what;
2029: my $usercourseprefix = $uname.'_'.$udom.'_'.$cid;
2030: #
2031: my $seclevel = $usercourseprefix.'.['.$csec.'].'.$what;
2032: my $seclevelr = $usercourseprefix.'.['.$csec.'].'.$symbparm;
2033: my $seclevelm = $usercourseprefix.'.['.$csec.'].'.$mapparm;
2034: #
2035: my $courselevel = $usercourseprefix.'.'.$what;
2036: my $courselevelr = $usercourseprefix.'.'.$symbparm;
2037: my $courselevelm = $usercourseprefix.'.'.$mapparm;
2038: # fourth, check user
2039: if (defined($uname)) {
2040: return $useropt{$courselevelr} if (defined($useropt{$courselevelr}));
2041: return $useropt{$courselevelm} if (defined($useropt{$courselevelm}));
2042: return $useropt{$courselevel} if (defined($useropt{$courselevel}));
2043: }
2044: # third, check course
2045: if (defined($csec)) {
2046: return $courseopt{$seclevelr} if (defined($courseopt{$seclevelr}));
2047: return $courseopt{$seclevelm} if (defined($courseopt{$seclevelm}));
2048: return $courseopt{$seclevel} if (defined($courseopt{$seclevel}));
2049: }
2050: #
2051: return $courseopt{$courselevelr} if (defined($courseopt{$courselevelr}));
2052: return $courseopt{$courselevelm} if (defined($courseopt{$courselevelm}));
2053: return $courseopt{$courselevel} if (defined($courseopt{$courselevel}));
2054: # second, check map parms
2055: my $thisparm = $parmhash{$symbparm};
2056: return $thisparm if (defined($thisparm));
2057: # first, check default
2058: return &Apache::lonnet::metadata($fn,$rwhat.'.default');
2059: }
2060:
2061:
2062: ##################################################################
2063: ## Row label formatting routines ##
2064: ##################################################################
2065: sub format_html_rowlabel {
2066: my $sheet = shift;
2067: my $rowlabel = shift;
2068: return '' if ($rowlabel eq '');
2069: my ($type,$labeldata) = split(':',$rowlabel,2);
2070: my $result = '';
2071: if ($type eq 'symb') {
2072: my ($symb,$mapid,$resid,$title) = split(':',$labeldata);
2073: $symb = &Apache::lonnet::unescape($symb);
2074: $result = '<a href="/adm/assesscalc?usymb='.$symb.
2075: '&uname='.$sheet->{'uname'}.'&udom='.$sheet->{'udom'}.
2076: '&mapid='.$mapid.'&resid='.$resid.'">'.$title.'</a>';
2077: } elsif ($type eq 'student') {
2078: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2079: if ($fullname =~ /^\s*$/) {
2080: $fullname = $sname.'@'.$sdom;
2081: }
2082: $result ='<a href="/adm/studentcalc?uname='.$sname.
2083: '&udom='.$sdom.'">';
2084: $result.=$section.' '.$id." ".$fullname.'</a>';
2085: } elsif ($type eq 'parameter') {
2086: $result = $labeldata;
2087: } else {
2088: $result = '<b><font size=+1>'.$rowlabel.'</font></b>';
2089: }
2090: return $result;
2091: }
2092:
2093: sub format_csv_rowlabel {
2094: my $sheet = shift;
2095: my $rowlabel = shift;
2096: return '' if ($rowlabel eq '');
2097: my ($type,$labeldata) = split(':',$rowlabel,2);
2098: my $result = '';
2099: if ($type eq 'symb') {
2100: my ($symb,$mapid,$resid,$title) = split(':',$labeldata);
2101: $symb = &Apache::lonnet::unescape($symb);
2102: $result = $title;
2103: } elsif ($type eq 'student') {
2104: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2105: $result = join('","',($sname,$sdom,$fullname,$section,$id));
2106: } elsif ($type eq 'parameter') {
2107: $labeldata =~ s/<br>/ /g;
2108: $result = $labeldata;
2109: } else {
2110: $result = $rowlabel;
2111: }
2112: return '"'.$result.'"';
2113: }
2114:
2115: sub format_excel_rowlabel {
2116: my $sheet = shift;
2117: my $rowlabel = shift;
2118: return '' if ($rowlabel eq '');
2119: my ($type,$labeldata) = split(':',$rowlabel,2);
2120: my $result = '';
2121: if ($type eq 'symb') {
2122: my ($symb,$mapid,$resid,$title) = split(':',$labeldata);
2123: $symb = &Apache::lonnet::unescape($symb);
2124: $result = $title;
2125: } elsif ($type eq 'student') {
2126: my ($sname,$sdom,$fullname,$section,$id) = split(':',$labeldata);
2127: $section = '' if (! defined($section));
2128: $id = '' if (! defined($id));
2129: my @Data = ($sname,$sdom,$fullname,$section,$id);
2130: $result = \@Data;
2131: } elsif ($type eq 'parameter') {
2132: $labeldata =~ s/<br>/ /g;
2133: $result = $labeldata;
2134: } else {
2135: $result = $rowlabel;
2136: }
2137: return $result;
2138: }
2139:
2140: # ---------------------------------------------- Update rows for course listing
2141: sub updateclasssheet {
2142: my ($sheet) = @_;
2143: my $cnum =$sheet->{'cnum'};
2144: my $cdom =$sheet->{'cdom'};
2145: my $cid =$sheet->{'cid'};
2146: my $chome =$sheet->{'chome'};
2147: #
2148: %Section = ();
2149: #
2150: # Read class list and row labels
2151: my $classlist = &Apache::loncoursedata::get_classlist();
2152: if (! defined($classlist)) {
2153: return 'Could not access course classlist';
2154: }
2155: #
2156: my %currentlist=();
2157: foreach my $student (keys(%$classlist)) {
2158: my ($studentDomain,$studentName,$end,$start,$id,$studentSection,
2159: $fullname,$status) = @{$classlist->{$student}};
2160: $Section{$studentName.':'.$studentDomain} = $studentSection;
2161: if ($ENV{'form.Status'} eq $status || $ENV{'form.Status'} eq 'Any') {
2162: $currentlist{$student}=join(':',('student',$studentName,
2163: $studentDomain,$fullname,
2164: $studentSection,$id));
2165: }
2166: }
2167: #
2168: # Find discrepancies between the course row table and this
2169: #
2170: my %f=&getformulas($sheet);
2171: my $changed=0;
2172: #
2173: $sheet->{'maxrow'}=0;
2174: my %existing=();
2175: #
2176: # Now obsolete rows
2177: foreach (keys(%f)) {
2178: if ($_=~/^A(\d+)/) {
2179: if ($1 > $sheet->{'maxrow'}) {
2180: $sheet->{'maxrow'}= $1;
2181: }
2182: $existing{$f{$_}}=1;
2183: unless ((defined($currentlist{$f{$_}})) || (!$1) ||
2184: ($f{$_}=~/^(~~~|---)/)) {
2185: $f{$_}='!!! Obsolete';
2186: $changed=1;
2187: }
2188: }
2189: }
2190: #
2191: # New and unknown keys
2192: foreach my $student (sort keys(%currentlist)) {
2193: unless ($existing{$student}) {
2194: $changed=1;
2195: $sheet->{'maxrow'}++;
2196: $f{'A'.$sheet->{'maxrow'}}=$student;
2197: }
2198: }
2199: if ($changed) {
2200: $sheet->{'f'} = \%f;
2201: &setformulas($sheet,%f);
2202: }
2203: #
2204: &setrowlabels($sheet,\%currentlist);
2205: }
2206:
2207: # ----------------------------------- Update rows for student and assess sheets
2208: sub get_student_rowlabels {
2209: my ($sheet) = @_;
2210: #
2211: my %course_db;
2212: #
2213: my $stype = $sheet->{'sheettype'};
2214: my $uname = $sheet->{'uname'};
2215: my $udom = $sheet->{'udom'};
2216: #
2217: $sheet->{'rowlabel'} = {};
2218: #
2219: my $identifier =$sheet->{'coursefilename'}.'_'.$stype;
2220: if ($rowlabel_cache{$identifier}) {
2221: %{$sheet->{'rowlabel'}}=split(/___;___/,$rowlabel_cache{$identifier});
2222: } else {
2223: # Get the data and store it in the cache
2224: # Tie hash
2225: tie(%course_db,'GDBM_File',$sheet->{'coursefilename'}.'.db',
2226: &GDBM_READER(),0640);
2227: if (! tied(%course_db)) {
2228: return 'Could not access course data';
2229: }
2230: #
2231: my %assesslist;
2232: foreach ('Feedback','Evaluation','Tutoring','Discussion') {
2233: my $symb = '_'.lc($_);
2234: $assesslist{$symb} = join(':',('symb',$symb,0,0,$_));
2235: }
2236: #
2237: while (my ($key,$srcf) = each(%course_db)) {
2238: next if ($key !~ /^src_(\d+)\.(\d+)$/);
2239: my $mapid = $1;
2240: my $resid = $2;
2241: my $id = $mapid.'.'.$resid;
2242: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
2243: my $symb=
2244: &Apache::lonnet::declutter($course_db{'map_id_'.$mapid}).
2245: '___'.$resid.'___'.&Apache::lonnet::declutter($srcf);
2246: $assesslist{$symb}='symb:'.&Apache::lonnet::escape($symb).':'
2247: .$mapid.':'.$resid.':'.$course_db{'title_'.$id};
2248: }
2249: }
2250: untie(%course_db);
2251: # Store away the data
2252: $sheet->{'rowlabel'} = \%assesslist;
2253: $rowlabel_cache{$identifier}=join('___;___',%{$sheet->{'rowlabel'}});
2254: }
2255:
2256: }
2257:
2258: sub get_assess_rowlabels {
2259: my ($sheet) = @_;
2260: #
2261: my %course_db;
2262: #
2263: my $stype = $sheet->{'sheettype'};
2264: my $uname = $sheet->{'uname'};
2265: my $udom = $sheet->{'udom'};
2266: my $usymb = $sheet->{'usymb'};
2267: #
2268: $sheet->{'rowlabel'} = {};
2269: my $identifier =$sheet->{'coursefilename'}.'_'.$stype.'_'.$usymb;
2270: #
2271: if ($rowlabel_cache{$identifier}) {
2272: %{$sheet->{'rowlabel'}}=split(/___;___/,$rowlabel_cache{$identifier});
2273: } else {
2274: # Get the data and store it in the cache
2275: # Tie hash
2276: tie(%course_db,'GDBM_File',$sheet->{'coursefilename'}.'.db',
2277: &GDBM_READER(),0640);
2278: if (! tied(%course_db)) {
2279: return 'Could not access course data';
2280: }
2281: #
2282: my %parameter_labels=
2283: ('timestamp' =>
2284: 'parameter:Timestamp of Last Transaction<br>timestamp',
2285: 'subnumber' =>
2286: 'parameter:Number of Submissions<br>subnumber',
2287: 'tutornumber' =>
2288: 'parameter:Number of Tutor Responses<br>tutornumber',
2289: 'totalpoints' =>
2290: 'parameter:Total Points Granted<br>totalpoints');
2291: while (my ($key,$srcf) = each(%course_db)) {
2292: next if ($key !~ /^src_(\d+)\.(\d+)$/);
2293: my $mapid = $1;
2294: my $resid = $2;
2295: my $id = $mapid.'.'.$resid;
2296: if ($srcf=~/\.(problem|exam|quiz|assess|survey|form)$/) {
2297: # Loop through the metadata for this key
2298: my @Metadata = split(/,/,
2299: &Apache::lonnet::metadata($srcf,'keys'));
2300: foreach my $key (@Metadata) {
2301: next if ($key !~ /^(stores|parameter)_/);
2302: my $display=
2303: &Apache::lonnet::metadata($srcf,$key.'.display');
2304: unless ($display) {
2305: $display.=
2306: &Apache::lonnet::metadata($srcf,$key.'.name');
2307: }
2308: $display.='<br>'.$key;
2309: $parameter_labels{$key}='parameter:'.$display;
2310: } # end of foreach
2311: }
2312: }
2313: untie(%course_db);
2314: # Store away the results
2315: $sheet->{'rowlabel'} = \%parameter_labels;
2316: $rowlabel_cache{$identifier}=join('___;___',%{$sheet->{'rowlabel'}});
2317: }
2318:
2319: }
2320:
2321: sub updatestudentassesssheet {
2322: my $sheet = shift;
2323: if ($sheet->{'sheettype'} eq 'studentcalc') {
2324: &get_student_rowlabels($sheet);
2325: } else {
2326: &get_assess_rowlabels($sheet);
2327: }
2328: # Determine if any of the information has changed
2329: my %f=&getformulas($sheet);
2330: my $changed=0;
2331:
2332: $sheet->{'maxrow'} = 0;
2333: my %existing=();
2334: # Now obsolete rows
2335: foreach my $cell (keys(%f)) {
2336: my $formula = $f{$cell};
2337: next if ($cell !~ /^A(\d+)/);
2338: $sheet->{'maxrow'} = $1 if ($1 > $sheet->{'maxrow'});
2339: my ($usy,$ufn)=split(/__&&&\__/,$formula);
2340: $existing{$usy}=1;
2341: unless ((exists($sheet->{'rowlabel'}->{$usy}) &&
2342: (defined($sheet->{'rowlabel'}->{$usy})) || (!$1) ||
2343: ($formula =~ /^(~~~|---)/) )) {
2344: $f{$_}='!!! Obsolete';
2345: $changed=1;
2346: } elsif ($ufn) {
2347: # I do not think this works any more
2348: $sheet->{'rowlabel'}->{$usy}
2349: =~s/assesscalc\?usymb\=/assesscalc\?ufn\=$ufn&\usymb\=/;
2350: }
2351: }
2352: # New and unknown keys
2353: foreach (keys(%{$sheet->{'rowlabel'}})) {
2354: unless ($existing{$_}) {
2355: $changed=1;
2356: $sheet->{'maxrow'}++;
2357: $f{'A'.$sheet->{'maxrow'}}=$_;
2358: }
2359: }
2360: if ($changed) {
2361: $sheet->{'f'} = \%f;
2362: &setformulas($sheet);
2363: }
2364: }
2365:
2366: # ------------------------------------------------ Load data for one assessment
2367:
2368: sub loadstudent{
2369: my ($sheet,$r,$c)=@_;
2370: my %constants=();
2371: my %formulas=&getformulas($sheet);
2372: $cachedassess=$sheet->{'uname'}.':'.$sheet->{'udom'};
2373: # Get ALL the student preformance data
2374: my @tmp = &Apache::lonnet::dump($sheet->{'cid'},
2375: $sheet->{'udom'},
2376: $sheet->{'uname'},
2377: undef);
2378: if ($tmp[0] !~ /^error:/) {
2379: %cachedstores = @tmp;
2380: }
2381: undef @tmp;
2382: #
2383: my @assessdata=();
2384: foreach my $cell (keys(%formulas)) {
2385: my $value = $formulas{$cell};
2386: if(defined($c) && ($c->aborted())) {
2387: last;
2388: }
2389: next if ($cell !~ /^A(\d+)/);
2390: my $row=$1;
2391: next if (($value =~ /^[!~-]/) || ($row==0));
2392: my ($usy,$ufn)=split(/__&&&\__/,$value);
2393: @assessdata=&exportsheet($sheet,$sheet->{'uname'},
2394: $sheet->{'udom'},
2395: 'assesscalc',$usy,$ufn,$r);
2396: my $index=0;
2397: foreach my $col ('A','B','C','D','E','F','G','H','I','J','K','L','M',
2398: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
2399: if (defined($assessdata[$index])) {
2400: if ($assessdata[$index]=~/\D/) {
2401: $constants{$col.$row}="'".$assessdata[$index]."'";
2402: } else {
2403: $constants{$col.$row}=$assessdata[$index];
2404: }
2405: $formulas{$col.$row}='import' if ($col ne 'A');
2406: }
2407: $index++;
2408: }
2409: }
2410: $cachedassess='';
2411: undef %cachedstores;
2412: $sheet->{'f'} = \%formulas;
2413: &setformulas($sheet);
2414: &setconstants($sheet,\%constants);
2415: }
2416:
2417: # --------------------------------------------------- Load data for one student
2418: #
2419: sub loadcourse {
2420: my ($sheet,$r,$c)=@_;
2421: #
2422: my %constants=();
2423: my %formulas=&getformulas($sheet);
2424: #
2425: my $total=0;
2426: foreach (keys(%formulas)) {
2427: if ($_=~/^A(\d+)/) {
2428: unless ($formulas{$_}=~/^[\!\~\-]/) { $total++; }
2429: }
2430: }
2431: my $now=0;
2432: my $since=time;
2433: $r->print(<<ENDPOP);
2434: <script>
2435: popwin=open('','popwin','width=400,height=100');
2436: popwin.document.writeln('<html><body bgcolor="#FFFFFF">'+
2437: '<h3>Spreadsheet Calculation Progress</h3>'+
2438: '<form name=popremain>'+
2439: '<input type=text size=35 name=remaining value=Starting></form>'+
2440: '</body></html>');
2441: popwin.document.close();
2442: </script>
2443: ENDPOP
2444: $r->rflush();
2445: foreach (keys(%formulas)) {
2446: if(defined($c) && ($c->aborted())) {
2447: last;
2448: }
2449: next if ($_!~/^A(\d+)/);
2450: my $row=$1;
2451: next if (($formulas{$_}=~/^[\!\~\-]/) || ($row==0));
2452: my ($sname,$sdom) = split(':',$formulas{$_});
2453: my @studentdata=&exportsheet($sheet,$sname,$sdom,'studentcalc',
2454: undef,undef,$r);
2455: undef %userrdatas;
2456: $now++;
2457: $r->print('<script>popwin.document.popremain.remaining.value="'.
2458: $now.'/'.$total.': '.int((time-$since)/$now*($total-$now)).
2459: ' secs remaining";</script>');
2460: $r->rflush();
2461: #
2462: my $index=0;
2463: foreach ('A','B','C','D','E','F','G','H','I','J','K','L','M',
2464: 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z') {
2465: if (defined($studentdata[$index])) {
2466: my $col=$_;
2467: if ($studentdata[$index]=~/\D/) {
2468: $constants{$col.$row}="'".$studentdata[$index]."'";
2469: } else {
2470: $constants{$col.$row}=$studentdata[$index];
2471: }
2472: unless ($col eq 'A') {
2473: $formulas{$col.$row}='import';
2474: }
2475: }
2476: $index++;
2477: }
2478: }
2479: $sheet->{'f'}=\%formulas;
2480: &setformulas($sheet);
2481: &setconstants($sheet,\%constants);
2482: $r->print('<script>popwin.close()</script>');
2483: $r->rflush();
2484: }
2485:
2486: # ------------------------------------------------ Load data for one assessment
2487: #
2488: sub loadassessment {
2489: my ($sheet,$r,$c)=@_;
2490:
2491: my $uhome = $sheet->{'uhome'};
2492: my $uname = $sheet->{'uname'};
2493: my $udom = $sheet->{'udom'};
2494: my $symb = $sheet->{'usymb'};
2495: my $cid = $sheet->{'cid'};
2496: my $cnum = $sheet->{'cnum'};
2497: my $cdom = $sheet->{'cdom'};
2498: my $chome = $sheet->{'chome'};
2499:
2500: my $namespace;
2501: unless ($namespace=$cid) { return ''; }
2502: # Get stored values
2503: my %returnhash=();
2504: if ($cachedassess eq $uname.':'.$udom) {
2505: #
2506: # get data out of the dumped stores
2507: #
2508: my $version=$cachedstores{'version:'.$symb};
2509: my $scope;
2510: for ($scope=1;$scope<=$version;$scope++) {
2511: foreach (split(/\:/,$cachedstores{$scope.':keys:'.$symb})) {
2512: $returnhash{$_}=$cachedstores{$scope.':'.$symb.':'.$_};
2513: }
2514: }
2515: } else {
2516: #
2517: # restore individual
2518: #
2519: %returnhash = &Apache::lonnet::restore($symb,$namespace,$udom,$uname);
2520: for (my $version=1;$version<=$returnhash{'version'};$version++) {
2521: foreach (split(/\:/,$returnhash{$version.':keys'})) {
2522: $returnhash{$_}=$returnhash{$version.':'.$_};
2523: }
2524: }
2525: }
2526: #
2527: # returnhash now has all stores for this resource
2528: # convert all "_" to "." to be able to use libraries, multiparts, etc
2529: #
2530: # This is dumb. It is also necessary :(
2531: my @oldkeys=keys %returnhash;
2532: #
2533: foreach my $name (@oldkeys) {
2534: my $value=$returnhash{$name};
2535: delete $returnhash{$name};
2536: $name=~s/\_/\./g;
2537: $returnhash{$name}=$value;
2538: }
2539: # initialize coursedata and userdata for this user
2540: undef %courseopt;
2541: undef %useropt;
2542:
2543: my $userprefix=$uname.'_'.$udom.'_';
2544:
2545: unless ($uhome eq 'no_host') {
2546: # Get coursedata
2547: unless ((time-$courserdatas{$cid.'.last_cache'})<240) {
2548: my %Tmp = &Apache::lonnet::dump('resourcedata',$cdom,$cnum);
2549: $courserdatas{$cid}=\%Tmp;
2550: $courserdatas{$cid.'.last_cache'}=time;
2551: }
2552: while (my ($name,$value) = each(%{$courserdatas{$cid}})) {
2553: $courseopt{$userprefix.$name}=$value;
2554: }
2555: # Get userdata (if present)
2556: unless ((time-$userrdatas{$uname.'@'.$udom.'.last_cache'})<240) {
2557: my %Tmp = &Apache::lonnet::dump('resourcedata',$udom,$uname);
2558: $userrdatas{$cid} = \%Tmp;
2559: # Most of the time the user does not have a 'resourcedata.db'
2560: # file. We need to cache that we got nothing instead of bothering
2561: # with requesting it every time.
2562: $userrdatas{$uname.'@'.$udom.'.last_cache'}=time;
2563: }
2564: while (my ($name,$value) = each(%{$userrdatas{$cid}})) {
2565: $useropt{$userprefix.$name}=$value;
2566: }
2567: }
2568: # now courseopt, useropt initialized for this user and course
2569: # (used by parmval)
2570: #
2571: # Load keys for this assessment only
2572: #
2573: my %thisassess=();
2574: my ($symap,$syid,$srcf)=split(/\_\_\_/,$symb);
2575: foreach (split(/\,/,&Apache::lonnet::metadata($srcf,'keys'))) {
2576: $thisassess{$_}=1;
2577: }
2578: #
2579: # Load parameters
2580: #
2581: my %c=();
2582: if (tie(%parmhash,'GDBM_File',
2583: $sheet->{'coursefilename'}.'_parms.db',&GDBM_READER(),0640)) {
2584: my %f=&getformulas($sheet);
2585: foreach my $cell (keys(%f)) {
2586: next if ($cell !~ /^A/);
2587: next if ($f{$cell} =~/^[\!\~\-]/);
2588: if ($f{$cell}=~/^parameter/) {
2589: if (defined($thisassess{$f{$cell}})) {
2590: my $val = &parmval($f{$cell},$sheet);
2591: $c{$cell} = $val;
2592: $c{$f{$cell}} = $val;
2593: }
2594: } else {
2595: my $key=$f{$cell};
2596: my $ckey=$key;
2597: $key=~s/^stores\_/resource\./;
2598: $key=~s/\_/\./g;
2599: $c{$cell}=$returnhash{$key};
2600: $c{$ckey}=$returnhash{$key};
2601: }
2602: }
2603: untie(%parmhash);
2604: }
2605: &setconstants($sheet,\%c);
2606: }
2607:
2608: # --------------------------------------------------------- Various form fields
2609:
2610: sub textfield {
2611: my ($title,$name,$value)=@_;
2612: return "\n<p><b>$title:</b><br>".
2613: '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
2614: }
2615:
2616: sub hiddenfield {
2617: my ($name,$value)=@_;
2618: return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
2619: }
2620:
2621: sub selectbox {
2622: my ($title,$name,$value,%options)=@_;
2623: my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
2624: foreach (sort keys(%options)) {
2625: $selout.='<option value="'.$_.'"';
2626: if ($_ eq $value) { $selout.=' selected'; }
2627: $selout.='>'.$options{$_}.'</option>';
2628: }
2629: return $selout.'</select>';
2630: }
2631:
2632: # =============================================== Update information in a sheet
2633: #
2634: # Add new users or assessments, etc.
2635: #
2636:
2637: sub updatesheet {
2638: my ($sheet)=@_;
2639: if ($sheet->{'sheettype'} eq 'classcalc') {
2640: return &updateclasssheet($sheet);
2641: } else {
2642: return &updatestudentassesssheet($sheet);
2643: }
2644: }
2645:
2646: # =================================================== Load the rows for a sheet
2647: #
2648: # Import the data for rows
2649: #
2650:
2651: sub loadrows {
2652: my ($sheet,$r)=@_;
2653: my $c = $r->connection;
2654: my $stype=$sheet->{'sheettype'};
2655: if ($stype eq 'classcalc') {
2656: &loadcourse($sheet,$r,$c);
2657: } elsif ($stype eq 'studentcalc') {
2658: &loadstudent($sheet,$r,$c);
2659: } else {
2660: &loadassessment($sheet,$r,$c);
2661: }
2662: }
2663:
2664: # ======================================================= Forced recalculation?
2665:
2666: sub checkthis {
2667: my ($keyname,$time)=@_;
2668: if (! exists($expiredates{$keyname})) {
2669: return 0;
2670: } else {
2671: return ($time<$expiredates{$keyname});
2672: }
2673: }
2674:
2675: sub forcedrecalc {
2676: my ($uname,$udom,$stype,$usymb)=@_;
2677: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2678: my $time=$oldsheets{$key.'.time'};
2679: if ($ENV{'form.forcerecalc'}) { return 1; }
2680: unless ($time) { return 1; }
2681: if ($stype eq 'assesscalc') {
2682: my $map=(split(/___/,$usymb))[0];
2683: if (&checkthis('::assesscalc:',$time) ||
2684: &checkthis('::assesscalc:'.$map,$time) ||
2685: &checkthis('::assesscalc:'.$usymb,$time) ||
2686: &checkthis($uname.':'.$udom.':assesscalc:',$time) ||
2687: &checkthis($uname.':'.$udom.':assesscalc:'.$map,$time) ||
2688: &checkthis($uname.':'.$udom.':assesscalc:'.$usymb,$time)) {
2689: return 1;
2690: }
2691: } else {
2692: if (&checkthis('::studentcalc:',$time) ||
2693: &checkthis($uname.':'.$udom.':studentcalc:',$time)) {
2694: return 1;
2695: }
2696: }
2697: return 0;
2698: }
2699:
2700: # ============================================================== Export handler
2701: # exportsheet
2702: # returns the export row for a spreadsheet.
2703: #
2704: sub exportsheet {
2705: my ($sheet,$uname,$udom,$stype,$usymb,$fn,$r)=@_;
2706: my $flag = 0;
2707: $uname = $uname || $sheet->{'uname'};
2708: $udom = $udom || $sheet->{'udom'};
2709: $stype = $stype || $sheet->{'sheettype'};
2710: my @exportarr=();
2711: if (defined($usymb) && ($usymb=~/^\_(\w+)/) &&
2712: (!defined($fn) || $fn eq '')) {
2713: $fn='default_'.$1;
2714: }
2715: #
2716: # Check if cached
2717: #
2718: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2719: my $found='';
2720: if ($oldsheets{$key}) {
2721: foreach (split(/___&\___/,$oldsheets{$key})) {
2722: my ($name,$value)=split(/___=___/,$_);
2723: if ($name eq $fn) {
2724: $found=$value;
2725: }
2726: }
2727: }
2728: unless ($found) {
2729: &cachedssheets($sheet,$uname,$udom);
2730: if ($oldsheets{$key}) {
2731: foreach (split(/___&\___/,$oldsheets{$key})) {
2732: my ($name,$value)=split(/___=___/,$_);
2733: if ($name eq $fn) {
2734: $found=$value;
2735: }
2736: }
2737: }
2738: }
2739: #
2740: # Check if still valid
2741: #
2742: if ($found) {
2743: if (&forcedrecalc($uname,$udom,$stype,$usymb)) {
2744: $found='';
2745: }
2746: }
2747: if ($found) {
2748: #
2749: # Return what was cached
2750: #
2751: @exportarr=split(/___;___/,$found);
2752: return @exportarr;
2753: }
2754: #
2755: # Not cached
2756: #
2757: my ($newsheet)=&makenewsheet($uname,$udom,$stype,$usymb);
2758: &readsheet($newsheet,$fn);
2759: &updatesheet($newsheet);
2760: &loadrows($newsheet,$r);
2761: &calcsheet($newsheet);
2762: @exportarr=&exportdata($newsheet);
2763: ##
2764: ## Store now
2765: ##
2766: #
2767: # load in the old value
2768: #
2769: my %currentlystored=();
2770: if ($stype eq 'studentcalc') {
2771: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets',
2772: [$key],
2773: $sheet->{'cdom'},$sheet->{'cnum'});
2774: if ($tmp[0]!~/^error/) {
2775: # We only got one key, so we will access it directly.
2776: foreach (split('___&___',$tmp[1])) {
2777: my ($key,$value) = split('___=___',$_);
2778: $key = '' if (! defined($key));
2779: $currentlystored{$key} = $value;
2780: }
2781: }
2782: } else {
2783: my @tmp = &Apache::lonnet::get('nohist_calculatedsheets_'.
2784: $sheet->{'cid'},[$key],
2785: $sheet->{'udom'},$sheet->{'uname'});
2786: if ($tmp[0]!~/^error/) {
2787: # We only got one key, so we will access it directly.
2788: foreach (split('___&___',$tmp[1])) {
2789: my ($key,$value) = split('___=___',$_);
2790: $key = '' if (! defined($key));
2791: $currentlystored{$key} = $value;
2792: }
2793: }
2794: }
2795: #
2796: # Add the new line
2797: #
2798: $currentlystored{$fn}=join('___;___',@exportarr);
2799: #
2800: # Stick everything back together
2801: #
2802: my $newstore='';
2803: foreach (keys(%currentlystored)) {
2804: if ($newstore) { $newstore.='___&___'; }
2805: $newstore.=$_.'___=___'.$currentlystored{$_};
2806: }
2807: my $now=time;
2808: #
2809: # Store away the new value
2810: #
2811: my $timekey = $key.'.time';
2812: if ($stype eq 'studentcalc') {
2813: my $result = &Apache::lonnet::put('nohist_calculatedsheets',
2814: { $key => $newstore,
2815: $timekey => $now },
2816: $sheet->{'cdom'},
2817: $sheet->{'cnum'});
2818: } else {
2819: my $result = &Apache::lonnet::put('nohist_calculatedsheets_'.$sheet->{'cid'},
2820: { $key => $newstore,
2821: $timekey => $now },
2822: $sheet->{'udom'},
2823: $sheet->{'uname'});
2824: }
2825: return @exportarr;
2826: }
2827:
2828: # ============================================================ Expiration Dates
2829: #
2830: # Load previously cached student spreadsheets for this course
2831: #
2832: sub load_spreadsheet_expirationdates {
2833: undef %expiredates;
2834: my $cid=$ENV{'request.course.id'};
2835: my @tmp = &Apache::lonnet::dump('nohist_expirationdates',
2836: $ENV{'course.'.$cid.'.domain'},
2837: $ENV{'course.'.$cid.'.num'});
2838: if (lc($tmp[0]) !~ /^error/){
2839: %expiredates = @tmp;
2840: }
2841: }
2842:
2843: # ===================================================== Calculated sheets cache
2844: #
2845: # Load previously cached student spreadsheets for this course
2846: #
2847:
2848: sub cachedcsheets {
2849: my $cid=$ENV{'request.course.id'};
2850: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
2851: $ENV{'course.'.$cid.'.domain'},
2852: $ENV{'course.'.$cid.'.num'});
2853: if ($tmp[0] !~ /^error/) {
2854: my %StupidTempHash = @tmp;
2855: while (my ($key,$value) = each %StupidTempHash) {
2856: $oldsheets{$key} = $value;
2857: }
2858: }
2859: }
2860:
2861: # ===================================================== Calculated sheets cache
2862: #
2863: # Load previously cached assessment spreadsheets for this student
2864: #
2865:
2866: sub cachedssheets {
2867: my ($sheet,$uname,$udom) = @_;
2868: $uname = $uname || $sheet->{'uname'};
2869: $udom = $udom || $sheet->{'udom'};
2870: if (! $loadedcaches{$uname.'_'.$udom}) {
2871: my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets',
2872: $sheet->{'udom'},
2873: $sheet->{'uname'});
2874: if ($tmp[0] !~ /^error/) {
2875: my %TempHash = @tmp;
2876: my $count = 0;
2877: while (my ($key,$value) = each %TempHash) {
2878: $oldsheets{$key} = $value;
2879: $count++;
2880: }
2881: $loadedcaches{$sheet->{'uname'}.'_'.$sheet->{'udom'}}=1;
2882: }
2883: }
2884:
2885: }
2886:
2887: # ===================================================== Calculated sheets cache
2888: #
2889: # Load previously cached assessment spreadsheets for this student
2890: #
2891:
2892: # ================================================================ Main handler
2893: #
2894: # Interactive call to screen
2895: #
2896: #
2897: sub handler {
2898: my $r=shift;
2899:
2900: my ($sheettype) = ($r->uri=~/\/(\w+)$/);
2901:
2902: if (! exists($ENV{'form.Status'})) {
2903: $ENV{'form.Status'} = 'Active';
2904: }
2905: if ( ! exists($ENV{'form.output'}) ||
2906: ($sheettype ne 'classcalc' &&
2907: lc($ENV{'form.output'}) eq 'recursive excel')) {
2908: $ENV{'form.output'} = 'HTML';
2909: }
2910: #
2911: # Overload checking
2912: #
2913: # Check this server
2914: my $loaderror=&Apache::lonnet::overloaderror($r);
2915: if ($loaderror) { return $loaderror; }
2916: # Check the course homeserver
2917: $loaderror= &Apache::lonnet::overloaderror($r,
2918: $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
2919: if ($loaderror) { return $loaderror; }
2920: #
2921: # HTML Header
2922: #
2923: if ($r->header_only) {
2924: $r->content_type('text/html');
2925: $r->send_http_header;
2926: return OK;
2927: }
2928: #
2929: # Global directory configs
2930: #
2931: $includedir = $r->dir_config('lonIncludes');
2932: $tmpdir = $r->dir_config('lonDaemons').'/tmp/';
2933: #
2934: # Roles Checking
2935: #
2936: # Needs to be in a course
2937: if (! $ENV{'request.course.fn'}) {
2938: # Not in a course, or not allowed to modify parms
2939: $ENV{'user.error.msg'}=
2940: $r->uri.":opa:0:0:Cannot modify spreadsheet";
2941: return HTTP_NOT_ACCEPTABLE;
2942: }
2943: #
2944: # Get query string for limited number of parameters
2945: #
2946: &Apache::loncommon::get_unprocessed_cgi
2947: ($ENV{'QUERY_STRING'},['uname','udom','usymb','ufn','mapid','resid']);
2948: #
2949: # Deal with restricted student permissions
2950: #
2951: if ($ENV{'request.role'} =~ /^st\./) {
2952: delete $ENV{'form.unewfield'} if (exists($ENV{'form.unewfield'}));
2953: delete $ENV{'form.unewformula'} if (exists($ENV{'form.unewformula'}));
2954: }
2955: #
2956: # Clean up symb and spreadsheet filename
2957: #
2958: if (($ENV{'form.usymb'}=~/^\_(\w+)/) && (!$ENV{'form.ufn'})) {
2959: $ENV{'form.ufn'}='default_'.$1;
2960: }
2961: #
2962: # Interactive loading of specific sheet?
2963: #
2964: if (($ENV{'form.load'}) && ($ENV{'form.loadthissheet'} ne 'Default')) {
2965: $ENV{'form.ufn'}=$ENV{'form.loadthissheet'};
2966: }
2967: #
2968: # Determine the user name and domain for the sheet.
2969: my $aname;
2970: my $adom;
2971: unless ($ENV{'form.uname'}) {
2972: $aname=$ENV{'user.name'};
2973: $adom=$ENV{'user.domain'};
2974: } else {
2975: $aname=$ENV{'form.uname'};
2976: $adom=$ENV{'form.udom'};
2977: }
2978: #
2979: # Open page, try to prevent browser cache.
2980: #
2981: $r->content_type('text/html');
2982: $r->header_out('Cache-control','no-cache');
2983: $r->header_out('Pragma','no-cache');
2984: $r->send_http_header;
2985: #
2986: # Header....
2987: #
2988: $r->print('<html><head><title>LON-CAPA Spreadsheet</title>');
2989: my $nothing = "''";
2990: if ($ENV{'browser.type'} eq 'explorer') {
2991: $nothing = "'javascript:void(0);'";
2992: }
2993:
2994: if ($ENV{'request.role'} !~ /^st\./) {
2995: $r->print(<<ENDSCRIPT);
2996: <script language="JavaScript">
2997:
2998: var editwin;
2999:
3000: function celledit(cellname,cellformula) {
3001: var edit_text = '';
3002: // cellformula may contain less-than and greater-than symbols, so
3003: // we need to escape them?
3004: edit_text +='<html><head><title>Cell Edit Window</title></head><body>';
3005: edit_text += '<form name="editwinform">';
3006: edit_text += '<center><h3>Cell '+cellname+'</h3>';
3007: edit_text += '<textarea name="newformula" cols="40" rows="6"';
3008: edit_text += ' wrap="off" >'+cellformula+'</textarea>';
3009: edit_text += '</br>';
3010: edit_text += '<input type="button" name="accept" value="Accept"';
3011: edit_text += ' onClick=\\\'javascript:';
3012: edit_text += 'opener.document.sheet.unewfield.value=';
3013: edit_text += '"'+cellname+'";';
3014: edit_text += 'opener.document.sheet.unewformula.value=';
3015: edit_text += 'document.editwinform.newformula.value;';
3016: edit_text += 'opener.document.sheet.submit();';
3017: edit_text += 'self.close()\\\' />';
3018: edit_text += ' ';
3019: edit_text += '<input type="button" name="abort" ';
3020: edit_text += 'value="Discard Changes"';
3021: edit_text += ' onClick="javascript:self.close()" />';
3022: edit_text += '</center></body></html>';
3023:
3024: if (editwin != null && !(editwin.closed) ) {
3025: editwin.close();
3026: }
3027:
3028: editwin = window.open($nothing,'CellEditWin','height=200,width=350,scrollbars=no,resizeable=yes,alwaysRaised=yes,dependent=yes',true);
3029: editwin.document.write(edit_text);
3030: }
3031:
3032: function changesheet(cn) {
3033: document.sheet.unewfield.value=cn;
3034: document.sheet.unewformula.value='changesheet';
3035: document.sheet.submit();
3036: }
3037:
3038: function insertrow(cn) {
3039: document.sheet.unewfield.value='insertrow';
3040: document.sheet.unewformula.value=cn;
3041: document.sheet.submit();
3042: }
3043:
3044: </script>
3045: ENDSCRIPT
3046: }
3047: $r->print('</head>'.&Apache::loncommon::bodytag('Grades Spreadsheet').
3048: '<form action="'.$r->uri.'" name="sheet" method="post">');
3049: $r->print(&hiddenfield('uname',$ENV{'form.uname'}).
3050: &hiddenfield('udom',$ENV{'form.udom'}).
3051: &hiddenfield('usymb',$ENV{'form.usymb'}).
3052: &hiddenfield('unewfield','').
3053: &hiddenfield('unewformula',''));
3054: $r->rflush();
3055: #
3056: # Full recalc?
3057: #
3058: if ($ENV{'form.forcerecalc'}) {
3059: $r->print('<h4>Completely Recalculating Sheet ...</h4>');
3060: undef %spreadsheets;
3061: undef %courserdatas;
3062: undef %userrdatas;
3063: undef %defaultsheets;
3064: undef %rowlabel_cache;
3065: }
3066: # Read new sheet or modified worksheet
3067: my ($sheet)=&makenewsheet($aname,$adom,$sheettype,$ENV{'form.usymb'});
3068: #
3069: # Check user permissions
3070: if (($sheet->{'sheettype'} eq 'classcalc' ) ||
3071: ($sheet->{'uname'} ne $ENV{'user.name'} ) ||
3072: ($sheet->{'udom'} ne $ENV{'user.domain'})) {
3073: unless (&Apache::lonnet::allowed('vgr',$sheet->{'cid'})) {
3074: $r->print('<h1>Access Permission Denied</h1>'.
3075: '</form></body></html>');
3076: return OK;
3077: }
3078: }
3079: # Print out user information
3080: $r->print('<h2>'.$sheet->{'coursedesc'}.'</h2>');
3081: if ($sheet->{'sheettype'} ne 'classcalc') {
3082: $r->print('<h2>'.&gettitle($sheet).'</h2><p>');
3083: }
3084: if ($sheet->{'sheettype'} eq 'assesscalc') {
3085: $r->print('<b>User:</b> '.$sheet->{'uname'}.
3086: '<br /><b>Domain:</b> '.$sheet->{'udom'}.'<br />');
3087: }
3088: if ($sheet->{'sheettype'} eq 'studentcalc' ||
3089: $sheet->{'sheettype'} eq 'assesscalc') {
3090: $r->print('<b>Section/Group:</b>'.$sheet->{'csec'}.'</p>');
3091: }
3092: #
3093: # If a new formula had been entered, go from work copy
3094: if ($ENV{'form.unewfield'}) {
3095: $r->print('<h2>Modified Workcopy</h2>');
3096: $ENV{'form.unewformula'}=~s/\'/\"/g;
3097: $r->print('<p>Cell '.$ENV{'form.unewfield'}.' = <pre>');
3098: $r->print(&HTML::Entities::encode($ENV{'form.unewformula'}).
3099: '</pre></p>');
3100: $sheet->{'filename'} = $ENV{'form.ufn'};
3101: &tmpread($sheet,$ENV{'form.unewfield'},$ENV{'form.unewformula'});
3102: } elsif ($ENV{'form.saveas'}) {
3103: $sheet->{'filename'} = $ENV{'form.ufn'};
3104: &tmpread($sheet);
3105: } else {
3106: &readsheet($sheet,$ENV{'form.ufn'});
3107: }
3108: # Additional options
3109: if ($sheet->{'sheettype'} eq 'assesscalc') {
3110: $r->print('<p><font size=+2>'.
3111: '<a href="/adm/studentcalc?'.
3112: 'uname='.$sheet->{'uname'}.
3113: '&udom='.$sheet->{'udom'}.'">'.
3114: 'Level up: Student Sheet</a></font></p>');
3115: }
3116: if (($sheet->{'sheettype'} eq 'studentcalc') &&
3117: (&Apache::lonnet::allowed('vgr',$sheet->{'cid'}))) {
3118: $r->print ('<p><font size=+2><a href="/adm/classcalc">'.
3119: 'Level up: Course Sheet</a></font></p>');
3120: }
3121: # Recalc button
3122: $r->print('<br />'.
3123: '<input type="submit" name="forcerecalc" '.
3124: 'value="Completely Recalculate Sheet"></p>');
3125: # Save dialog
3126: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
3127: my $fname=$ENV{'form.ufn'};
3128: $fname=~s/\_[^\_]+$//;
3129: if ($fname eq 'default') { $fname='course_default'; }
3130: $r->print('<input type=submit name=saveas value="Save as ...">'.
3131: '<input type=text size=20 name=newfn value="'.$fname.'">'.
3132: 'make default: <input type=checkbox name="makedefufn"><p>');
3133: }
3134: $r->print(&hiddenfield('ufn',$sheet->{'filename'}));
3135: # Load dialog
3136: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
3137: $r->print('<p><input type=submit name=load value="Load ...">'.
3138: '<select name="loadthissheet">'.
3139: '<option name="default">Default</option>');
3140: foreach (&othersheets($sheet)) {
3141: $r->print('<option name="'.$_.'"');
3142: if ($ENV{'form.ufn'} eq $_) {
3143: $r->print(' selected');
3144: }
3145: $r->print('>'.$_.'</option>');
3146: }
3147: $r->print('</select><p>');
3148: if ($sheet->{'sheettype'} eq 'studentcalc') {
3149: &setothersheets($sheet,
3150: &othersheets($sheet,'assesscalc'));
3151: }
3152: }
3153: #
3154: # Set up caching mechanisms
3155: #
3156: &load_spreadsheet_expirationdates();
3157: # Clear out old caches if we have not seen this class before.
3158: if (exists($oldsheets{'course'}) &&
3159: $oldsheets{'course'} ne $sheet->{'cid'}) {
3160: undef %oldsheets;
3161: undef %loadedcaches;
3162: }
3163: $oldsheets{'course'} = $sheet->{'cid'};
3164: #
3165: if ($sheet->{'sheettype'} eq 'classcalc') {
3166: $r->print("Loading previously calculated student sheets ...\n");
3167: $r->rflush();
3168: &cachedcsheets();
3169: } elsif ($sheet->{'sheettype'} eq 'studentcalc') {
3170: $r->print("Loading previously calculated assessment sheets ...\n");
3171: $r->rflush();
3172: &cachedssheets($sheet);
3173: }
3174: # Update sheet, load rows
3175: $r->print("Loaded sheet(s), updating rows ...<br>\n");
3176: $r->rflush();
3177: #
3178: &updatesheet($sheet);
3179: $r->print("Updated rows, loading row data ...\n");
3180: $r->rflush();
3181: #
3182: &loadrows($sheet,$r);
3183: $r->print("Loaded row data, calculating sheet ...<br>\n");
3184: $r->rflush();
3185: #
3186: my $calcoutput=&calcsheet($sheet);
3187: $r->print('<h3><font color=red>'.$calcoutput.'</h3></font>');
3188: # See if something to save
3189: if (&Apache::lonnet::allowed('opa',$ENV{'request.course.id'})) {
3190: my $fname='';
3191: if ($ENV{'form.saveas'} && ($fname=$ENV{'form.newfn'})) {
3192: $fname=~s/\W/\_/g;
3193: if ($fname eq 'default') { $fname='course_default'; }
3194: $fname.='_'.$sheet->{'sheettype'};
3195: $sheet->{'filename'} = $fname;
3196: $ENV{'form.ufn'}=$fname;
3197: $r->print('<p>Saving spreadsheet: '.
3198: &writesheet($sheet,$ENV{'form.makedefufn'}).
3199: '<p>');
3200: }
3201: }
3202: #
3203: # Write the modified worksheet
3204: $r->print('<b>Current sheet:</b> '.$sheet->{'filename'}.'</p>');
3205: &tmpwrite($sheet);
3206: if ($sheet->{'sheettype'} eq 'assesscalc') {
3207: $r->print('<p>Show rows with empty A column: ');
3208: } else {
3209: $r->print('<p>Show empty rows: ');
3210: }
3211: #
3212: $r->print(&hiddenfield('userselhidden','true').
3213: '<input type="checkbox" name="showall" onClick="submit()"');
3214: #
3215: if ($ENV{'form.showall'}) {
3216: $r->print(' checked');
3217: } else {
3218: unless ($ENV{'form.userselhidden'}) {
3219: unless
3220: ($ENV{'course.'.$sheet->{'cid'}.'.hideemptyrows'} eq 'yes') {
3221: $r->print(' checked');
3222: $ENV{'form.showall'}=1;
3223: }
3224: }
3225: }
3226: $r->print('>');
3227: #
3228: # CSV format checkbox (classcalc sheets only)
3229: $r->print(' Output as <select name="output" size="1" onClick="submit()">'.
3230: "\n");
3231: foreach my $mode (qw/HTML CSV Excel/) {
3232: $r->print('<option value="'.$mode.'"');
3233: if ($ENV{'form.output'} eq $mode) {
3234: $r->print(' selected ');
3235: }
3236: $r->print('>'.$mode.'</option>'."\n");
3237: }
3238: #
3239: # Mulit-sheet excel takes too long and does not work at all for large
3240: # classes. Future inclusion of this option may be possible with the
3241: # Spreadsheet::WriteExcel::Big and speed improvements.
3242: #
3243: # if ($sheet->{'sheettype'} eq 'classcalc') {
3244: # $r->print('<option value="recursive excel"');
3245: # if ($ENV{'form.output'} eq 'recursive excel') {
3246: # $r->print(' selected ');
3247: # }
3248: # $r->print(">Multi-Sheet Excel</option>\n");
3249: # }
3250: $r->print("</select>\n");
3251: #
3252: if ($sheet->{'sheettype'} eq 'classcalc') {
3253: $r->print(' Student Status: '.
3254: &Apache::lonhtmlcommon::StatusOptions
3255: ($ENV{'form.Status'},'sheet'));
3256: }
3257: #
3258: # Buttons to insert rows
3259: # $r->print(<<ENDINSERTBUTTONS);
3260: #<br>
3261: #<input type='button' onClick='insertrow("top");'
3262: #value='Insert Row Top'>
3263: #<input type='button' onClick='insertrow("bottom");'
3264: #value='Insert Row Bottom'><br>
3265: #ENDINSERTBUTTONS
3266: # Print out sheet
3267: &outsheet($sheet,$r);
3268: $r->print('</form></body></html>');
3269: # Done
3270: return OK;
3271: }
3272:
3273: 1;
3274: __END__
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